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116 results on '"Memon, A. H."'

5. Modification of cellulose ether with organic carbonate for enhanced thermal and rheological properties: Characterization and analysis

Author

Abbas, Ghulam, Tunio, Abdul H., Memon, Khalil R., Mahesar, Aftab A., Memon, Faisal H., Abbasi, Ghazanfer R., Abbas, Ghulam, Tunio, Abdul H., Memon, Khalil R., Mahesar, Aftab A., Memon, Faisal H., and Abbasi, Ghazanfer R.

Abstract

Reduction in viscosity at higher temperatures is the main limitation of utilizing cellulose ethers in high thermal reservoir conditions for petroleum industry applications. In this study, cellulose ether (hydroxyethyl methyl cellulose (HEMC)) is modified using organic carbonates, i.e., propylene carbonate (PC) and diethyl carbonate (DEC), to overcome the limitation of reduced viscosity at high temperatures. The polymer composites were characterized through various analytical techniques, including Fourier-transform infrared (FTIR), H-NMR, X-ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), -potential measurement, molecular weight determination, and rheology measurements. The experimental results of structural and morphological characterization confirm the modification and formation of a new organic carbonate-based cellulose ether. The thermal analysis revealed that the modified composites have greater stability, as the modified samples demonstrated higher vaporization and decomposition temperatures. -potential measurement indicates higher stability of DEC- and PC-modified composites. The relative viscometry measurement revealed that the modification increased the molecular weight of PC- and DEC-containing polymers, up to 93,000 and 99,000 g/moL, respectively. Moreover, the modified composites exhibited higher levels of stability, shear strength and thermal resistance as confirmed by viscosity measurement through rheology determination. The observed increase in viscosity is likely due to the enhanced inter- and intramolecular interaction and higher molecular weight of modified composites. The organic carbonate performed as a transesterification agent that improves the overall properties of cellulose ether (HEMC) at elevated temperatures as concluded from this study. The modification approach in this study will open the doors to new applications and will be beneficial for substantial de

Published
2023

6. Postoperative and Pathological Outcomes of CROSS and FLOT as Neoadjuvant Therapy for Esophageal and Junctional Adenocarcinoma: An International Cohort Study From the Oesophagogastric Anastomosis Audit (OGAA)

Author

MS CGO, Cancer, Steering Committee, Committee, Alderson, D., Bundred, J., Rpt, Evans, Gossage, J., Griffiths, E. A., Jefferies, B., Kamarajah, S. K., McKay, S., Mohamed, Nepogodiev, D., Siaw- Acheampong, K., Singh, P., Van Hillegersberg, R., Vohra, R., Wanigasooriya, K., Whitehouse, T., National Leads, Leads, Gjata, A., Moreno, J. I., Takeda, F. R., Kidane, B., Guevara Castro, R., Harustiak, T., Bekele, A., Kechagias, A., Gockel, Kennedy, A., Da Roit, A., Bagajevas, A., Azagra, J. S., Mahendran, H. A., Mejía-Fernández, L., Wijnhoven, B. P.L., El Kafsi, J., Sayyed, R. H., Sousa, M., Sampaio, A. S., Negoi, Blanco, R., Wallner, B., Schneider, P. M., Hsu, P. K., Isik, A., Leads, Site, Gananadha, S., Wills, Devadas, M., Duong, C., Talbot, M., Hii, M. W., Jacobs, R., Andreollo, N. A., Johnston, B., Darling, G., Isaza-Restrepo, A., Rosero, G., Arias-Amézquita, F., Raptis, D., Gaedcke, J., Reim, D., Izbicki, J., Egberts, J. H., Dikinis, S., Kjaer, D. W., Larsen, M. H., Achiam, M. P., Saarnio, J., Theodorou, D., Liakakos, T., Korkolis, D. P., Robb, W. B., Collins, C., Murphy, T., Reynolds, J., Tonini, Migliore, M., Bonavina, L., Valmasoni, M., Bardini, R., Weindelmayer, J., Terashima, M., White, R. E., Alghunaim, E., Elhadi, M., Leon-Takahashi, A. M., Medina-Franco, H., Lau, P. C., Okonta, K. E., Heisterkamp, J., Rosman, C., Beban, G., Babor, R., Gordon, A., Rossaak, J. I., Pal, K. M.I., Qureshi, A. U., Naqi, S. A., Syed, A. A., Barbosa, J., Vicente, C. S., Leite, J., Freire, J., Casaca, R., Costa, R. C.T., Scurtu, R. R., Mogoanta, S. S., Bolca, C., Constantinoiu, S., Sekhniaidze, D., Bjelović, M., So, J. B.Y., Gačevski, G., Loureiro, C., Pera, M., Bianchi, A., Moreno Gijón, M., Martín Fernández, J., Trugeda Carrera, M. S., Vallve-Bernal, M., Cítores Pascual, M. A., Elmahi, S., Halldestam, Hedberg, J., Mönig, S., Gutknecht, S., Tez, M., Guner, A., Tirnaksiz, M. B., Colak, E., Sevinç, B., Hindmarsh, A., Khan, Khoo, D., Byrom, R., Gokhale, J., Wilkerson, P., Jain, P., Chan, D., Robertson, K., Iftikhar, S., Skipworth, R., Forshaw, M., Higgs, S., Nijjar, R., Viswanath, Y. K.S., Turner, P., Dexter, S., Boddy, A., Allum, W. H., Oglesby, S., Cheong, E., Beardsmore, D., Maynard, N., Berrisford, R., Mercer, S., Puig, S., Melhado, R., Kelty, C., Underwood, T., Dawas, K., Lewis, W., Al-Bahrani, A., Bryce, G., Thomas, M., Arndt, A. T., Palazzo, F., Meguid, R. A., Collaborators, Fergusson, J., Beenen, E., Mosse, C., Salim, J., Cheah, S., Wright, T., Cerdeira, M. P., McQuillan, P., Richardson, M., Liem, H., Spillane, J., Yacob, M., Albadawi, F., Thorpe, T., Dingle, A., Cabalag, C., Loi, K., Fisher, O. M., Ward, S., Read, M., Johnson, M., Bassari, R., Bui, H., Cecconello, Raa, Sallum, Da Rocha, J. R.M., Lopes, L. R., Tercioti, V., Jds, Coelho, Ferrer, J. A.P., Buduhan, G., Tan, L., Srinathan, S., Shea, P., Yeung, J., Allison, F., Carroll, P., Vargas-Barato, F., Gonzalez, F., Ortega, J., Nino-Torres, L., Beltrán-García, T. C., Castilla, L., Pineda, M., Bastidas, A., Gómez-Mayorga, J., Cortés, N., Cetares, C., Caceres, S., Duarte, S., Pazdro, A., Snajdauf, M., Faltova, H., Sevcikova, M., Mortensen, P. B., Katballe, N., Ingemann, T., Kruhlikava, Morten B., Ainswort, A. P., Stilling, N. M., Eckardt, J., Holm, J., Thorsteinsson, M., Siemsen, M., Brandt, B., Nega, B., Teferra, E., Tizazu, A., Kauppila, J. H., Koivukangas, V., Meriläinen, S., Gruetzmann, R., Krautz, C., Weber, G., Golcher, H., Emons, G., Azizian, A., Ebeling, M., Niebisch, S., Kreuser, N., Albanese, G., Hesse, J., Volovnik, L., Boecher, U., Reeh, M., Triantafyllou, S., Schizas, D., Michalinos, A., Balli, E., Mpoura, M., Charalabopoulos, A., Manatakis, D. K., Balalis, D., Bolger, J., Baban, C., Mastrosimone, A., McAnena, O., Quinn, A., Ó Súilleabháin, C. B., Hennessy, M. M., Ivanovski, Khizer, H., Ravi, N., Donlon, N., Cervellera, M., Vaccari, S., Bianchini, S., Sartarelli, L., Asti, E., Bernardi, D., Merigliano, S., Provenzano, L., Scarpa, M., Saadeh, L., Salmaso, B., De Manzoni, G., Giacopuzzi, S., La Mendola, R., De Pasqual, C. A., Tsubosa, Y., Niihara, M., Irino, T., Makuuchi, R., Ishii, K., Mwachiro, M., Fekadu, A., Odera, A., Mwachiro, E., Alshehab, D., Ahmed, H. A., Shebani, A. O., Elhadi, A., Elnagar, F. A., Elnagar, H. F., Makkai-Popa, S. T., Wong, L. F., Tan, Y. R., Thannimalai, S., Ho, C. A., Pang, W. S., Tan, J. H., Hnl, Basave, Cortés-González, R., Lagarde, S. M., Van Lanschot, J. J.B., Cords, C., Jansen, W. A., Martijnse, I., Matthijsen, R., Bouwense, S., Klarenbeek, B., Verstegen, M., Van Workum, F., Ruurda, J. P., Van Der Sluis, P. C., De Maat, M., Evenett, N., Johnston, P., Patel, R., MacCormick, A., Young, M., Smith, B., Ekwunife, C., Memon, A. H., Shaikh, K., Wajid, A., Khalil, N., Haris, M., Mirza, Z. U., Sba, Qudus, Sarwar, M. Z., Shehzadi, A., Raza, A., Jhanzaib, M. H., Farmanali, J., Zakir, Z., Shakeel, O., Nasir, Khattak, S., Baig, M., Noor, M. A., Ahmed, H. H., Naeem, A., Pinho, A. C., Da Silva, R., Bernardes, A., Campos, J. C., Matos, H., Braga, T., Monteiro, C., Ramos, P., Cabral, F., Gomes, M. P., Martins, P. C., Correia, A. M., Videira, J. F., Ciuce, C., Drasovean, R., Apostu, R., Paitici, S., Racu, A. E., Obleaga, C. V., Beuran, M., Stoica, B., Negoita, Ciubotaru C., Cordos, Birla, R. D., Predescu, D., Hoara, P. A., Tomsa, R., Shneider, Agasiev, M., Ganjara, Gunjić, D., Veselinović, M., Babič, T., Chin, T. S., Shabbir, A., Kim, G., Crnjac, A., Samo, H., Díez Del Val, Del Val, Leturio, S., Ramón, J. M., Dal Cero, M., Rifá, S., Rico, M., Pagan Pomar, A., Martinez Corcoles, J. A., Rodicio Miravalles, J. L., Pais, S. A., Turienzo, S. A., Alvarez, L. S., Campos, P. V., Rendo, A. G., García, S. S., Epg, Santos, Martínez, E. T., Fernández Díaz, M. J., Magadán Álvarez, C., Martín, Concepción, Díaz López, C., Rosat Rodrigo, A., Pérez Sánchez, L. E., Bailón Cuadrado, M., Tinoco Carrasco, C., Choolani Bhojwani, E., Sánchez, D. P., Ahmed, M. E., Dzhendov, T., Lindberg, F., Rutegård, M., Sundbom, M., Mickael, C., Colucci, N., Schnider, A., Er, S., Kurnaz, E., Turkyilmaz, S., Turkyilmaz, A., Yildirim, R., Baki, B. E., Akkapulu, N., Karahan, O., Damburaci, N., Hardwick, R., Safranek, P., Sujendran, Bennett, J., Afzal, Z., Shrotri, M., Chan, B., Exarchou, K., Gilbert, T., Amalesh, T., Mukherjee, D., Mukherjee, S., Wiggins, T. H., Kennedy, R., McCain, S., Harris, A., Dobson, G., Davies, N., Wilson, I., Mayo, D., Bennett, D., Young, R., Manby, P., Blencowe, N., Schiller, M., Byrne, B., Mitton, D., Wong, V., Elshaer, A., Cowen, M., Menon, Tan, L. C., McLaughlin, E., Koshy, R., Sharp, C., Brewer, H., Das, N., Cox, M., Al Khyatt, W., Worku, D., Iqbal, R., Walls, L., McGregor, R., Fullarton, G., MacDonald, A., MacKay, C., Craig, C., Dwerryhouse, S., Hornby, S., Jaunoo, S., Wadley, M., Baker, C., Saad, M., Kelly, M., Davies, A., Di Maggio, F., Mistry, P., Singhal, R., Tucker, O., Kapoulas, S., Powell-Brett, S., Davis, P., Bromley, G., Watson, L., Verma, R., Ward, J., Shetty, V., Ball, C., Pursnani, K., Sarela, A., Sue Ling, H., Mehta, S., Hayden, J., To, N., Palser, T., Hunter, D., Supramaniam, K., Butt, Z., Ahmed, A., Kumar, S., Chaudry, A., Moussa, O., Kordzadeh, A., Wilson, M. Lorenzi B., Patil, P., Noaman, Willem, J., Bouras, G., Evans, R., Singh, M., Warrilow, H., Ahmad, A., Tewari, N., Yanni, F., Couch, J., Theophilidou, E., Reilly, J. J., Van Boxel, Gijs, Akbari, K., Zanotti, D., Sgromo, B., Sanders, G., Wheatley, T., Ariyarathenam, A., Reece-Smith, A., Humphreys, L., Choh, C., Carter, N., Knight, B., Pucher, P., Athanasiou, A., Tan, B., Abdulrahman, M., Vickers, J., Akhtar, K., Chaparala, R., Brown, R., Alasmar, M. M.A., Ackroyd, R., Patel, K., Tamhankar, A., Wyman, A., Walker, R., Grace, B., Abbassi, N., Slim, N., Ioannidi, L., Blackshaw, G., Havard, T., Escofet, X., Powell, A., Owera, A., Rashid, F., Jambulingam, P., Padickakudi, J., Ben-Younes, H., McCormack, K., Makey, I. A., Karush, M. K., Seder, C. W., Liptay, M. J., Chmielewski, G., Rosato, E. L., Berger, A. C., Zheng, R., Okolo, E., Singh, A., Scott, C. D., Weyant, M. J., Mitchell, J. D., MS CGO, Cancer, Steering Committee, Committee, Alderson, D., Bundred, J., Rpt, Evans, Gossage, J., Griffiths, E. A., Jefferies, B., Kamarajah, S. K., McKay, S., Mohamed, Nepogodiev, D., Siaw- Acheampong, K., Singh, P., Van Hillegersberg, R., Vohra, R., Wanigasooriya, K., Whitehouse, T., National Leads, Leads, Gjata, A., Moreno, J. I., Takeda, F. R., Kidane, B., Guevara Castro, R., Harustiak, T., Bekele, A., Kechagias, A., Gockel, Kennedy, A., Da Roit, A., Bagajevas, A., Azagra, J. S., Mahendran, H. A., Mejía-Fernández, L., Wijnhoven, B. P.L., El Kafsi, J., Sayyed, R. H., Sousa, M., Sampaio, A. S., Negoi, Blanco, R., Wallner, B., Schneider, P. M., Hsu, P. K., Isik, A., Leads, Site, Gananadha, S., Wills, Devadas, M., Duong, C., Talbot, M., Hii, M. W., Jacobs, R., Andreollo, N. A., Johnston, B., Darling, G., Isaza-Restrepo, A., Rosero, G., Arias-Amézquita, F., Raptis, D., Gaedcke, J., Reim, D., Izbicki, J., Egberts, J. H., Dikinis, S., Kjaer, D. W., Larsen, M. H., Achiam, M. P., Saarnio, J., Theodorou, D., Liakakos, T., Korkolis, D. P., Robb, W. B., Collins, C., Murphy, T., Reynolds, J., Tonini, Migliore, M., Bonavina, L., Valmasoni, M., Bardini, R., Weindelmayer, J., Terashima, M., White, R. E., Alghunaim, E., Elhadi, M., Leon-Takahashi, A. M., Medina-Franco, H., Lau, P. C., Okonta, K. E., Heisterkamp, J., Rosman, C., Beban, G., Babor, R., Gordon, A., Rossaak, J. I., Pal, K. M.I., Qureshi, A. U., Naqi, S. A., Syed, A. A., Barbosa, J., Vicente, C. S., Leite, J., Freire, J., Casaca, R., Costa, R. C.T., Scurtu, R. R., Mogoanta, S. S., Bolca, C., Constantinoiu, S., Sekhniaidze, D., Bjelović, M., So, J. B.Y., Gačevski, G., Loureiro, C., Pera, M., Bianchi, A., Moreno Gijón, M., Martín Fernández, J., Trugeda Carrera, M. S., Vallve-Bernal, M., Cítores Pascual, M. A., Elmahi, S., Halldestam, Hedberg, J., Mönig, S., Gutknecht, S., Tez, M., Guner, A., Tirnaksiz, M. B., Colak, E., Sevinç, B., Hindmarsh, A., Khan, Khoo, D., Byrom, R., Gokhale, J., Wilkerson, P., Jain, P., Chan, D., Robertson, K., Iftikhar, S., Skipworth, R., Forshaw, M., Higgs, S., Nijjar, R., Viswanath, Y. K.S., Turner, P., Dexter, S., Boddy, A., Allum, W. H., Oglesby, S., Cheong, E., Beardsmore, D., Maynard, N., Berrisford, R., Mercer, S., Puig, S., Melhado, R., Kelty, C., Underwood, T., Dawas, K., Lewis, W., Al-Bahrani, A., Bryce, G., Thomas, M., Arndt, A. T., Palazzo, F., Meguid, R. A., Collaborators, Fergusson, J., Beenen, E., Mosse, C., Salim, J., Cheah, S., Wright, T., Cerdeira, M. P., McQuillan, P., Richardson, M., Liem, H., Spillane, J., Yacob, M., Albadawi, F., Thorpe, T., Dingle, A., Cabalag, C., Loi, K., Fisher, O. M., Ward, S., Read, M., Johnson, M., Bassari, R., Bui, H., Cecconello, Raa, Sallum, Da Rocha, J. R.M., Lopes, L. R., Tercioti, V., Jds, Coelho, Ferrer, J. A.P., Buduhan, G., Tan, L., Srinathan, S., Shea, P., Yeung, J., Allison, F., Carroll, P., Vargas-Barato, F., Gonzalez, F., Ortega, J., Nino-Torres, L., Beltrán-García, T. C., Castilla, L., Pineda, M., Bastidas, A., Gómez-Mayorga, J., Cortés, N., Cetares, C., Caceres, S., Duarte, S., Pazdro, A., Snajdauf, M., Faltova, H., Sevcikova, M., Mortensen, P. B., Katballe, N., Ingemann, T., Kruhlikava, Morten B., Ainswort, A. P., Stilling, N. M., Eckardt, J., Holm, J., Thorsteinsson, M., Siemsen, M., Brandt, B., Nega, B., Teferra, E., Tizazu, A., Kauppila, J. H., Koivukangas, V., Meriläinen, S., Gruetzmann, R., Krautz, C., Weber, G., Golcher, H., Emons, G., Azizian, A., Ebeling, M., Niebisch, S., Kreuser, N., Albanese, G., Hesse, J., Volovnik, L., Boecher, U., Reeh, M., Triantafyllou, S., Schizas, D., Michalinos, A., Balli, E., Mpoura, M., Charalabopoulos, A., Manatakis, D. K., Balalis, D., Bolger, J., Baban, C., Mastrosimone, A., McAnena, O., Quinn, A., Ó Súilleabháin, C. B., Hennessy, M. M., Ivanovski, Khizer, H., Ravi, N., Donlon, N., Cervellera, M., Vaccari, S., Bianchini, S., Sartarelli, L., Asti, E., Bernardi, D., Merigliano, S., Provenzano, L., Scarpa, M., Saadeh, L., Salmaso, B., De Manzoni, G., Giacopuzzi, S., La Mendola, R., De Pasqual, C. A., Tsubosa, Y., Niihara, M., Irino, T., Makuuchi, R., Ishii, K., Mwachiro, M., Fekadu, A., Odera, A., Mwachiro, E., Alshehab, D., Ahmed, H. A., Shebani, A. O., Elhadi, A., Elnagar, F. A., Elnagar, H. F., Makkai-Popa, S. T., Wong, L. F., Tan, Y. R., Thannimalai, S., Ho, C. A., Pang, W. S., Tan, J. H., Hnl, Basave, Cortés-González, R., Lagarde, S. M., Van Lanschot, J. J.B., Cords, C., Jansen, W. A., Martijnse, I., Matthijsen, R., Bouwense, S., Klarenbeek, B., Verstegen, M., Van Workum, F., Ruurda, J. P., Van Der Sluis, P. C., De Maat, M., Evenett, N., Johnston, P., Patel, R., MacCormick, A., Young, M., Smith, B., Ekwunife, C., Memon, A. H., Shaikh, K., Wajid, A., Khalil, N., Haris, M., Mirza, Z. U., Sba, Qudus, Sarwar, M. Z., Shehzadi, A., Raza, A., Jhanzaib, M. H., Farmanali, J., Zakir, Z., Shakeel, O., Nasir, Khattak, S., Baig, M., Noor, M. A., Ahmed, H. H., Naeem, A., Pinho, A. C., Da Silva, R., Bernardes, A., Campos, J. C., Matos, H., Braga, T., Monteiro, C., Ramos, P., Cabral, F., Gomes, M. P., Martins, P. C., Correia, A. M., Videira, J. F., Ciuce, C., Drasovean, R., Apostu, R., Paitici, S., Racu, A. E., Obleaga, C. V., Beuran, M., Stoica, B., Negoita, Ciubotaru C., Cordos, Birla, R. D., Predescu, D., Hoara, P. A., Tomsa, R., Shneider, Agasiev, M., Ganjara, Gunjić, D., Veselinović, M., Babič, T., Chin, T. S., Shabbir, A., Kim, G., Crnjac, A., Samo, H., Díez Del Val, Del Val, Leturio, S., Ramón, J. M., Dal Cero, M., Rifá, S., Rico, M., Pagan Pomar, A., Martinez Corcoles, J. A., Rodicio Miravalles, J. L., Pais, S. A., Turienzo, S. A., Alvarez, L. S., Campos, P. V., Rendo, A. G., García, S. S., Epg, Santos, Martínez, E. T., Fernández Díaz, M. J., Magadán Álvarez, C., Martín, Concepción, Díaz López, C., Rosat Rodrigo, A., Pérez Sánchez, L. E., Bailón Cuadrado, M., Tinoco Carrasco, C., Choolani Bhojwani, E., Sánchez, D. P., Ahmed, M. E., Dzhendov, T., Lindberg, F., Rutegård, M., Sundbom, M., Mickael, C., Colucci, N., Schnider, A., Er, S., Kurnaz, E., Turkyilmaz, S., Turkyilmaz, A., Yildirim, R., Baki, B. E., Akkapulu, N., Karahan, O., Damburaci, N., Hardwick, R., Safranek, P., Sujendran, Bennett, J., Afzal, Z., Shrotri, M., Chan, B., Exarchou, K., Gilbert, T., Amalesh, T., Mukherjee, D., Mukherjee, S., Wiggins, T. H., Kennedy, R., McCain, S., Harris, A., Dobson, G., Davies, N., Wilson, I., Mayo, D., Bennett, D., Young, R., Manby, P., Blencowe, N., Schiller, M., Byrne, B., Mitton, D., Wong, V., Elshaer, A., Cowen, M., Menon, Tan, L. C., McLaughlin, E., Koshy, R., Sharp, C., Brewer, H., Das, N., Cox, M., Al Khyatt, W., Worku, D., Iqbal, R., Walls, L., McGregor, R., Fullarton, G., MacDonald, A., MacKay, C., Craig, C., Dwerryhouse, S., Hornby, S., Jaunoo, S., Wadley, M., Baker, C., Saad, M., Kelly, M., Davies, A., Di Maggio, F., Mistry, P., Singhal, R., Tucker, O., Kapoulas, S., Powell-Brett, S., Davis, P., Bromley, G., Watson, L., Verma, R., Ward, J., Shetty, V., Ball, C., Pursnani, K., Sarela, A., Sue Ling, H., Mehta, S., Hayden, J., To, N., Palser, T., Hunter, D., Supramaniam, K., Butt, Z., Ahmed, A., Kumar, S., Chaudry, A., Moussa, O., Kordzadeh, A., Wilson, M. Lorenzi B., Patil, P., Noaman, Willem, J., Bouras, G., Evans, R., Singh, M., Warrilow, H., Ahmad, A., Tewari, N., Yanni, F., Couch, J., Theophilidou, E., Reilly, J. J., Van Boxel, Gijs, Akbari, K., Zanotti, D., Sgromo, B., Sanders, G., Wheatley, T., Ariyarathenam, A., Reece-Smith, A., Humphreys, L., Choh, C., Carter, N., Knight, B., Pucher, P., Athanasiou, A., Tan, B., Abdulrahman, M., Vickers, J., Akhtar, K., Chaparala, R., Brown, R., Alasmar, M. M.A., Ackroyd, R., Patel, K., Tamhankar, A., Wyman, A., Walker, R., Grace, B., Abbassi, N., Slim, N., Ioannidi, L., Blackshaw, G., Havard, T., Escofet, X., Powell, A., Owera, A., Rashid, F., Jambulingam, P., Padickakudi, J., Ben-Younes, H., McCormack, K., Makey, I. A., Karush, M. K., Seder, C. W., Liptay, M. J., Chmielewski, G., Rosato, E. L., Berger, A. C., Zheng, R., Okolo, E., Singh, A., Scott, C. D., Weyant, M. J., and Mitchell, J. D.

Published
2023

14. Textbook outcome following oesophagectomy for cancer: international cohort study

Author

Kamarajah, S. K., Evans, R. P. T., Nepogodiev, D., Hodson, J., Bundred, J. R., Gockel, I., Gossage, J. A., Isik, A., Kidane, B., Mahendran, H. A., Negoi, I., Okonta, K. E., Sayyed, R., van Hillegersberg, R., Vohra, R. S., Wijnhoven, B. P. L., Singh, P., Griffiths, E. A., Alderson, D., Bundred, J., Gossage, J., Jefferies, B., Mckay, S., Mohamed, I., Siaw-Acheampong, K., Vohra, R., Wanigasooriya, K., Whitehouse, T., Gjata, A., Moreno, J. I., Takeda, F. R., Guevara Castro, R., Harustiak, T., Bekele, A., Kechagias, A., Kennedy, A., Da Roit, A., Bagajevas, A., Azagra, J. S., Mej??a-Fern??ndez, L., El Kafsi, J., Sayyed, R. H., Sousa M, M., Sampaio, A. S., Blanco, R., Wallner, B., Schneider, P. M., Hsu, P. K., Gananadha, S., Wills, V., Devadas, M., Duong, C., Talbot, M., Hii, M. W., Jacobs, R., Andreollo, N. A., Johnston, B., Darling, G., Isaza-Restrepo, A., Rosero, G., Arias-Am??zquita, F., Raptis, D., Gaedcke, J., Reim, D., Izbicki, J., Egberts, J. H., Dikinis, S., Kjaer, D. W., Larsen, M. H., Achiam, M. P., Saarnio, J., Theodorou, D., Liakakos, T., Korkolis, D. P., Robb, W. B., Collins, C., Murphy, T., Reynolds, J., Tonini, V., Migliore, M., Bonavina, L., Valmasoni, M., Bardini, R., Weindelmayer, J., Terashima, M., White, R. E., Alghunaim, E., Elhadi, M., Leon-Takahashi, A. M., Medina-Franco, H., Lau, P. C., Heisterkamp, J., Rosman, C., Beban, G., Babor, R., Gordon, A., Rossaak, J. I., Pal, K. M. I., Qureshi, A. U., Naqi, S. A., Syed, A. A., Barbosa, J., Vicente, C. S., Leite, J., Freire, J., Casaca, R., Costa, R. C. T., Scurtu, R. R., Mogoanta, S. S., Bolca, C., Constantinoiu, S., Sekhniaidze, D., Bjelovi??, M., J. B. Y., So, Ga??evski, G., Loureiro, C., Pera, M., Bianchi, A., Moreno Gij??n, M., Fern??ndez, J. Mart??n., Trugeda Carrera, M. S., Vallve-Bernal, M., C??tores Pascual, M. A., Elmahi, S., Halldestam, I., Hedberg, J., M??nig, S., Gutknecht, S., Tez, M., Guner, A., Tirnaksiz, M. B., Colak, E., Sevin??, B., Hindmarsh, A., Khan, I., Khoo, D., Byrom, R., Gokhale, J., Wilkerson, P., Jain, P., Chan, D., Robertson, K., Iftikhar, S., Skipworth, R., Forshaw, M., Higgs, S., Nijjar, R., Viswanath, Y. K. S., Turner, P., Dexter, S., Boddy, A., Allum, W. H., Oglesby, S., Cheong, E., Beardsmore, D., Maynard, N., Berrisford, R., Mercer, S., Puig, S., Melhado, R., Kelty, C., Underwood, T., Dawas, K., Lewis, W., Bryce, G., Thomas, M., Arndt, A. T., Palazzo, F., Meguid, R. A., Fergusson, J., Beenen, E., Mosse, C., Salim, J., Cheah, S., Wright, T., Cerdeira, M. P., Mcquillan, P., Richardson, M., Liem, H., Spillane, J., Yacob, M., Albadawi, F., Thorpe, T., Dingle, A., Cabalag, C., Loi, K., Fisher, O. M., Ward, S., Read, M., Johnson, M., Bassari, R., Bui, H., Cecconello, I., Sallum, R. A. A., da Rocha, J. R. M., Lopes, L. R., Tercioti Jr, V., Coelho, J. D. S., Ferrer, J. A. P., Buduhan, G., Tan, L., Srinathan, S., Shea, P., Yeung, J., Allison, F., Carroll, P., Vargas-Barato, F., Gonzalez, F., Ortega, J., Nino-Torres, L., Beltr??n-Garc??a, T. C., Castilla, L., Pineda, M., Bastidas, A., G??mez-Mayorga, J., Cort??s, N., Cetares, C., Caceres, S., Duarte, S., Pazdro, A., Snajdauf, M., Faltova, H., Sevcikova, M., Mortensen, P. B., Katballe, N., Ingemann, T., Morten, B., Kruhlikava, I., Ainswort, A. P., Stilling, N. M., Eckardt, J., Holm, J., Thorsteinsson, M., Siemsen, M., Brandt, B., Nega, B., Teferra, E., Tizazu, A., Kauppila, J. H., Koivukangas, V., Meril??inen, S., Gruetzmann, R., Krautz, C., Weber, G., Golcher, H., Emons, G., Azizian, A., Ebeling, M., Niebisch, S., Kreuser, N., Albanese, G., Hesse, J., Volovnik, L., Boecher, U., Reeh, M., Triantafyllou, S., Schizas, D., Michalinos, A., Balli, E., Mpoura, M., Charalabopoulos, A., Manatakis, D. K., Balalis, D., Bolger, J., Baban, C., Mastrosimone, A., Mcanena, O., Quinn, A., S??illeabh??in, C. B., Hennessy, M. M., Ivanovski, I., Khizer, H., Ravi, N., Donlon, N., Cervellera, M., Vaccari, S., Bianchini, S., Asti, E., Bernardi, D., Merigliano, S., Provenzano, L., Scarpa, M., Saadeh, L., Salmaso, B., De Manzoni, G., Giacopuzzi, S., La Mendola, R., De Pasqual, C. A., Tsubosa, Y., Niihara, M., Irino, T., Makuuchi, R., Ishii K, K., Mwachiro, M., Fekadu, A., Odera, A., Mwachiro, E., Alshehab, D., Ahmed, H. A., Shebani, A. O., Elhadi, A., Elnagar, F. A., Elnagar, H. F., Makkai-Popa, S. T., Wong, L. F., Tan, Y. R., Thannimalai, S., C. A., Ho, Pang, W. S., Tan, J. H., Basave, H. N. L., Cort??s-Gonz??lez, R., Lagarde, S. M., van Lanschot, J. J. B., Cords, C., Jansen, W. A., Martijnse, I., Matthijsen, R., Bouwense, S., Klarenbeek, B., Verstegen, M., van Workum, F., Ruurda, J. P., van der Sluis, P. C., de Maat, M., Evenett, N., Johnston, P., Patel, R., Maccormick, A., Smith, B., Ekwunife, C., Memon, A. H., Shaikh, K., Wajid, A., Khalil, N., Haris, M., Mirza, Z. U., Qudus, S. B. A., Sarwar, M. Z., Shehzadi, A., Raza, A., Jhanzaib, M. H., Farmanali, J., Zakir, Z., Shakeel, O., Nasir, I., Khattak, S., Baig, M., Noor, M. A., Ahmed, H. H., Naeem, A., Pinho, A. C., da Silva, R., Bernardes, A., Campos, J. C., Matos, H., Braga, T., Monteiro, C., Ramos, P., Cabral, F., Gomes, M. P., Martins, P. C., Correia, A. M., Videira, J. F., Ciuce, C., Drasovean, R., Apostu, R., Paitici, S., Racu, A. E., Obleaga, C. V., Beuran, M., Stoica, B., Ciubotaru, C., Negoita, V., Cordos, I., Birla, R. D., Predescu, D., Hoara, P. A., Tomsa, R., Shneider, V., Agasiev, M., Ganjara, I., Gunji??, D., Veselinovi??, M., Babi??, T., Chin, T. S., Shabbir, A., Kim, G., Crnjac, A., Samo, H., D??ez del Val, I., Leturio, S., Ram??n, J. M., Dal Cero, M., Rif??, S., Rico, M., Pagan Pomar, A., Martinez Corcoles, J. A., Rodicio Miravalles, J. L., Pais, S. A., Turienzo, S. A., Alvarez, L. S., Campos, P. V., Rendo, A. G., Garc??a, S. S., Santos, E. P. G., Mart??nez, E. T., Fern??ndez D??az, M. J., lvarez, C. Magad??n., Mart??n, V. Concepci??n., D??az L??pez, C., Rosat Rodrigo, A., P??rez S??nchez, L. E., Cuadrado, M. Bail??n., Tinoco Carrasco, C., Choolani Bhojwani, E., S??nchez, D. P., Ahmed, M. E., Dzhendov, T., Lindberg, F., Ruteg??rd, M., Sundbom, M., Mickael, C., Colucci, N., Schnider, A., Er, S., Kurnaz, E., Turkyilmaz, S., Turkyilmaz, A., Yildirim, R., Baki, B. E., Akkapulu, N., Karahan, O., Damburaci, N., Hardwick, R., Safranek, P., Sujendran, V., Bennett, J., Afzal, Z., Shrotri, M., Chan, B., Exarchou, K., Gilbert, T., Amalesh, T., Mukherjee, D., Mukherjee, S., Wiggins, T. H., Kennedy, R., Mccain, S., Harris, A., Dobson, G., Davies, N., Wilson, I., Mayo, D., Bennett, D., Young, R., Manby, P., Blencowe, N., Schiller, M., Byrne, B., Mitton, D., Wong, V., Elshaer, A., Cowen, M., Menon, V., Tan, L. C., Mclaughlin, E., Koshy, R., Sharp, C., Brewer, H., Das, N., Cox, M., Al Khyatt, W., Worku, D., Iqbal, R., Walls, L., Mcgregor, R., Fullarton, G., Macdonald, A., Mackay, C., Craig, C., Dwerryhouse, S., Hornby, S., Jaunoo, S., Wadley, M., Baker, C., Saad, M., Kelly, M., Davies, A., Di Maggio, F., Mistry, P., Singhal, R., Tucker, O., Kapoulas, S., Powell-Brett, S., Davis, P., Bromley, G., Watson, L., Verma, R., Ward, J., Shetty, V., Ball, C., Pursnani, K., Sarela, A., Sue Ling, H., Mehta, S., Hayden, J., To, N., Palser, T., Hunter, D., Supramaniam, K., Butt, Z., Ahmed, A., Kumar, S., Chaudry, A., Moussa, O., Kordzadeh, A., Lorenzi, B., Wilson, M., Patil, P., Noaman, I., Bouras, G., Evans, R., Singh, M., Warrilow, H., Ahmad, A., Tewari, N., Yanni, F., Couch, J., Theophilidou, E., Reilly, J. J., van Boxel, G., Akbari, K., Zanotti, D., Sanders, G., Wheatley, T., Ariyarathenam, A., Reece-Smith, A., Humphreys, L., Choh, C., Carter, N., Knight, B., Pucher, P., Athanasiou, A., Tan, B., Abdulrahman, M., Vickers, J., Akhtar, K., Chaparala, R., Brown, R., Alasmar, M. M. A., Ackroyd, R., Patel, K., Tamhankar, A., Wyman, A., Walker, R., Grace, B., Abbassi, N., Slim, N., Ioannidi, L., Blackshaw, G., Havard, T., Escofet, X., Powell, A., Owera, A., Rashid, F., Jambulingam, P., Padickakudi, J., Ben-Younes, H., Mccormack, K., Makey, I. A., Karush, M. K., Seder, C. W., Liptay, M. J., Chmielewski, G., Rosato, E. L., Berger, A. C., Zheng, R., Okolo, E., Singh, A., Scott, C. D., Weyant, M. J., Mitchell, J. D., and Surgery

Subjects
Male, Textbook, MINIMALLY INVASIVE ESOPHAGECTOMY, Minimally Invasive Surgical Procedures/methods, Esophageal Neoplasms, SURGERY, Anastomosis, LYMPH-NODE RETRIEVAL, Anastomosis, Surgical, education, Anastomosis, Surgical/adverse effects, Esophageal Neoplasms/pathology, Esophagectomy/methods, Cohort Studies, Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14], Treatment Outcome, SDG 3 - Good Health and Well-being, Humans, Minimally Invasive Surgical Procedures, Esophagectomy, Surgical, esophagectomy, Surgery, Textbook, esophagectomy, esophageal cancer, esophageal cancer
Abstract

Background Textbook outcome has been proposed as a tool for the assessment of oncological surgical care. However, an international assessment in patients undergoing oesophagectomy for oesophageal cancer has not been reported. This study aimed to assess textbook outcome in an international setting. Methods Patients undergoing curative resection for oesophageal cancer were identified from the international Oesophagogastric Anastomosis Audit (OGAA) from April 2018 to December 2018. Textbook outcome was defined as the percentage of patients who underwent a complete tumour resection with at least 15 lymph nodes in the resected specimen and an uneventful postoperative course, without hospital readmission. A multivariable binary logistic regression model was used to identify factors independently associated with textbook outcome, and results are presented as odds ratio (OR) and 95 per cent confidence intervals (95 per cent c.i.). Results Of 2159 patients with oesophageal cancer, 39.7 per cent achieved a textbook outcome. The outcome parameter ‘no major postoperative complication’ had the greatest negative impact on a textbook outcome for patients with oesophageal cancer, compared to other textbook outcome parameters. Multivariable analysis identified male gender and increasing Charlson comorbidity index with a significantly lower likelihood of textbook outcome. Presence of 24-hour on-call rota for oesophageal surgeons (OR 2.05, 95 per cent c.i. 1.30 to 3.22; P = 0.002) and radiology (OR 1.54, 95 per cent c.i. 1.05 to 2.24; P = 0.027), total minimally invasive oesophagectomies (OR 1.63, 95 per cent c.i. 1.27 to 2.08; P < 0.001), and chest anastomosis above azygous (OR 2.17, 95 per cent c.i. 1.58 to 2.98; P < 0.001) were independently associated with a significantly increased likelihood of textbook outcome. Conclusion Textbook outcome is achieved in less than 40 per cent of patients having oesophagectomy for cancer. Improvements in centralization, hospital resources, access to minimal access surgery, and adoption of newer techniques for improving lymph node yield could improve textbook outcome.

Published
2022
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17. FEEDING BEHAVIOR AND FECUNDITY RATE OF SHRIMP SCAD ALEPES DJEDABA ALONG BALOCHISTAN COAST, PAKISTAN.

Author

Majeed, A., Liang, Z., Liu, C., Zhu, L., Kalhoro, M. A., and Memon, K. H.

Subjects
FERTILITY, SHRIMPS, COASTS, OVARIES, FISH spawning, LARVAE, FISH growth, SHRIMP fisheries
Abstract

Shrimp scad Alepes djedaba is widespread in tropical waters and commercially important fish species of Pakistan. Feeding habits and fecundity rate were studied for A. djedaba from Balochistan, Pakistan. Total of 111 specimens were examined to perceive the feeding habits and 102 specimens for fecundity rate. Total of 16 ovaries were taken from stage four for estimation of fecundity rate. Frequency occurrence and numerical abundance were used to evaluate the feeding behavior. In frequency occurrence method different food items was observed. Fishes were found at 46% in guts, digested food at 34%, shrimp at 14% and shrimp larvae were found at 6%. While, fishes were observed at 48.74%, digested food at 33.17%, shrimps at 13.32% and shrimp larvae at 4.77% according to numerical abundance. These results show that A. djedaba is carnivorous in nature. The lowest fecundity rate was 8693 and highest rate was 73246, the average of fecundity rate of A. djedaba was found to be at 37220. Based on present findings it is evident that the fish has an extended spawning period throughout the year with a peak in July and August. The positive correlation (R²= 0.976) was observed between fish (weight) and fecundity rate during present study. [ABSTRACT FROM AUTHOR]

Published
2022
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18. A novel image dehazing framework for robust vision‐based intelligent systems.

Author

Deeba, Farah, Dharejo, Fayaz A., Zawish, Muhammad, Memon, Fida H., Dev, Kapal, Naqvi, Rizwan A., Zhou, Yuanchun, and Du, Yi

Subjects
DEEP learning, COMPUTER vision, SIGNAL-to-noise ratio, PIXELS
Abstract

Apart from high‐level computer vision tasks, deep learning has also made significant progress in low‐level tasks, including single image dehazing. A well‐detailed image looks realistic and natural with its clear edges and balanced colour. To achieve a clearer and vivid view, we exploit the role of edges and colours as a significant part of our proposed work. A progressive two‐stage image dehazing network is presented to overcome the challenges of current image dehazing algorithms. The proposed image dehazing framework is divided into two steps; in the first stage, the multiscale image features of the encoder and decoder structure can be extracted. The second stage consists of the Color Correction Model (CCM), which retrieves balanced colour close to the ground truth. The encode‐decoder network consists of a dense residual attention unit (DRAU) that comprises channel attention with pixel attention mechanisms. We have seen that weighted information and the haze difference is inconsistent across pixels without DRAU at the various channel‐specific features. DRAU deals with different features and pixels unequally, which offers more versatility in handling knowledge of various types of detailed information. Our proposed two‐stage network exceeds state‐of‐the‐art algorithms in both visual and quantitative aspects. The findings are tested with the best‐published peak signal‐to‐noise ratio metrics of 33.55–33.44 dB and SSIM 0.9619–0.9714 on SOTS indoor and outdoor test data sets. [ABSTRACT FROM AUTHOR]

Published
2022
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19. Mortality from esophagectomy for esophageal cancer across low, middle, and high-income countries: An international cohort study

Author

Kamarajah, S. K. Nepogodiev, D. Bekele, A. Cecconello, I. and Evans, R. P. T. Guner, A. Gossage, J. A. Harustiak, T. and Hodson, J. Isik, A. Kidane, B. Leon-Takahashi, A. M. and Mahendran, H. A. Negoi, I. Okonta, K. E. Rosero, G. and Sayyed, R. H. Singh, P. Takeda, F. R. van Hillegersberg, R. and Vohra, R. S. White, R. E. Griffiths, E. A. Alderson, D. and Bundred, J. Evans, R. P. T. Gossage, J. Griffiths, E. A. and Jefferies, B. Kamarajah, S. K. McKay, S. Mohamed, I. and Nepogodiev, D. Siaw-Acheampong, K. Singh, P. van Hillegersberg, R. Vohra, R. Wanigasooriya, K. Whitehouse, T. and Gjata, A. Moreno, J. I. Takeda, F. R. Kidane, B. and Guevara, Castro R. Harustiak, T. Bekele, A. Kechagias, A. and Gockel, I. Kennedy, A. Da Roit, A. Bagajevas, A. and Azagra, J. S. Mahendran, H. A. Mejia-Fernandez, L. and Wijnhoven, B. P. L. El Kafsi, J. Sayyed, R. H. Sousa, M. and Sampaio, A. S. Negoi, I. Blanco, R. Wallner, B. and Schneider, P. M. Hsu, P. K. Isik, A. Gananadha, S. and Wills, V. Devadas, M. Duong, C. Talbot, M. Hii, M. W. and Jacobs, R. Andreollo, N. A. Johnston, B. Darling, G. and Isaza-Restrepo, A. Rosero, G. Arias-Amezquita, F. Raptis, D. and Gaedcke, J. Reim, D. Izbicki, J. Egberts, J. H. and Dikinis, S. Kjaer, D. W. Larsen, M. H. Achiam, M. P. and Saarnio, J. Theodorou, D. Liakakos, T. Korkolis, D. P. and Robb, W. B. Collins, C. Murphy, T. Reynolds, J. Tonini, V. Migliore, M. Bonavina, L. Valmasoni, M. Bardini, R. and Weindelmayer, J. Terashima, M. White, R. E. Alghunaim, E. Elhadi, M. Leon-Takahashi, A. M. Medina-Franco, H. and Lau, P. C. Okonta, K. E. Heisterkamp, J. Rosman, C. van Hillegersberg, R. Beban, G. Babor, R. Gordon, A. and Rossaak, J. I. Pal, K. M. I. Qureshi, A. U. Naqi, S. A. and Syed, A. A. Barbosa, J. Vicente, C. S. Leite, J. Freire, J. Casaca, R. Costa, R. C. T. Scurtu, R. R. Mogoanta, S. S. Bolca, C. Constantinoiu, S. Sekhniaidze, D. Bjelovic, M. So, J. B. Y. Gacevski, G. Loureiro, C. Pera, M. and Bianchi, A. Moreno, Gijon M. Martin Fernandez, J. Carrera, M. S. Trugeda Vallve-Bernal, M. Pascual, M. A. Citores and Elmahi, S. Halldestam, I. Hedberg, J. Monig, S. and Gutknecht, S. Tez, M. Guner, A. Tirnaksiz, M. B. Colak, E. Sevinc, B. Hindmarsh, A. Khan, I. Khoo, D. Byrom, R. Gokhale, J. Wilkerson, P. Jain, P. Chan, D. and Robertson, K. Iftikhar, S. Skipworth, R. Forshaw, M. and Higgs, S. Gossage, J. Nijjar, R. Viswanath, Y. K. S. and Turner, P. Dexter, S. Boddy, A. Allum, W. H. Oglesby, S. and Cheong, E. Beardsmore, D. Vohra, R. Maynard, N. and Berrisford, R. Mercer, S. Puigt, S. Melhadot, R. Kelty, C. Underwood, T. Dawas, K. Lewis, W. Al-Bahrani, A. and Bryce, G. Thomas, M. Arndt, A. T. Palazzo, F. Meguid, R. A. Fergusson, J. Beenen, E. Mosse, C. Salim, J. and Cheah, S. Wright, T. Cerdeira, M. P. McQuillan, P. and Richardson, M. Liem, H. Spillane, J. Yacob, M. Albadawi, F. Thorpe, T. Dingle, A. Cabalag, C. Loi, K. Fisher, O. M. Ward, S. Read, M. Johnson, M. Bassari, R. Bui, H. Cecconello, I. Sallum, R. A. A. da Rocha, J. R. M. and Lopes, L. R. Tercioti, Jr., V. Coelho, J. D. Ferrer, J. A. P. Buduhan, G. Tan, L. Srinathan, S. Shea, P. Yeung, J. Allison, F. Carroll, P. Vargas-Barato, F. Gonzalez, F. Ortega, J. Nino-Torres, L. Beltran-Garcia, T. C. and Castilla, L. Pineda, M. Bastidas, A. Gomez-Mayorga, J. and Cortes, N. Cetares, C. Caceres, S. Duarte, S. Pazdro, A. and Snajdauf, M. Faltova, H. Sevcikova, M. Mortensen, P. B. and Katballe, N. Ingemann, T. Morten, B. Kruhlikava, I. and Ainswort, A. P. Stilling, N. M. Eckardt, J. Holm, J. and Thorsteinsson, M. Siemsen, M. Brandt, B. Nega, B. and Teferra, E. Tizazu, A. Kauppila, J. H. Koivukangas, V. and Merilainen, S. Gruetzmann, R. Krautz, C. Weber, G. and Golcher, H. Emons, G. Azizian, A. Ebeling, M. Niebisch, S. Kreuser, N. Albanese, G. Hesse, J. Volovnik, L. and Boecher, U. Reeh, M. Triantafyllou, S. Schizas, D. and Michalinos, A. Mpali, E. Mpoura, M. Charalabopoulos, A. and Manatakis, D. K. Balalis, D. Bolger, J. Baban, C. and Mastrosimone, A. McAnena, O. Quinn, A. Suilleabhain, C. B. O. Hennessy, M. M. Ivanovski, I. Khizer, H. Ravi, N. and Donlon, N. Cervellera, M. Vaccari, S. Bianchini, S. and Sartarelli, L. Asti, E. Bernardi, D. Merigliano, S. and Provenzano, L. Scarpa, M. Saadeh, L. Salmaso, B. De Manzoni, G. Giacopuzzi, S. La Mendola, R. De Pasqual, C. A. and Tsubosa, Y. Niihara, M. Irino, T. Makuuchi, R. and Ishii, K. Mwachiro, M. Fekadu, A. Odera, A. Mwachiro, E. and AlShehab, D. Ahmed, H. A. Shebani, A. O. Elhadi, A. and Elnagar, F. A. Elnagar, H. F. Makkai-Popa, S. T. Wong, L. F. and Tan, Y. R. Thannimalai, S. Ho, C. A. Pang, W. S. and Tan, J. H. Basave, H. N. L. Cortes-Gonzalez, R. Lagarde, S. M. van Lanschot, J. J. B. Cords, C. Jansen, W. A. and Martijnse, I. Matthijsen, R. Bouwense, S. Klarenbeek, B. and Verstegen, M. van Workum, F. Ruurda, J. P. van der Sluis, P. C. de Maat, M. Evenett, N. Johnston, P. Patel, R. and MacCormick, A. Young, M. Smith, B. Ekwunife, C. Memon, A. H. Shaikh, K. Wajid, A. Khalil, N. Haris, M. and Mirza, Z. U. Qudus, S. B. A. Sarwar, M. Z. Shehzadi, A. and Raza, A. Jhanzaib, M. H. Farmanali, J. Zakir, Z. and Shakeel, O. Nasir, I. Khattak, S. Baig, M. Noor, M. A. and Ahmed, H. H. Naeem, A. Pinho, A. C. da Silva, R. and Bernardes, A. Campos, J. C. Matos, H. Braga, T. and Monteiro, C. Ramos, P. Cabral, F. Gomes, M. P. Martins, P. C. Correia, A. M. Videira, J. F. Ciuce, C. Drasovean, R. Apostu, R. Ciuce, C. Paitici, S. Racu, A. E. and Obleaga, C. V. Beuran, M. Stoica, B. Ciubotaru, C. and Negoita, V. Cordos, I. Birla, R. D. Predescu, D. Hoara, P. A. Tomsa, R. Shneider, V. Agasiev, M. Ganjara, I. and Gunjic, D. Veselinovic, M. Babic, T. Chin, T. S. and Shabbir, A. Kim, G. Crnjac, A. Samo, H. Del Val, I. Diez and Leturio, S. Ramon, J. M. Dal Cero, M. Rifa, S. Rico, M. Pomar, A. Pagan Corcoles, J. A. Martinez Miravalles, J. L. Rodicio Pais, S. A. Turienzo, S. A. Alvarezt, L. S. and Alvarez, L. S. Campos, P. V. Rendo, A. G. Garcia, S. S. and Santos, E. P. G. Martinez, E. T. Fernandez, Diaz Mj Magadan, Alvarez C. Concepcion, Martin V. Diaz, Lopez C. Rosat, Rodrigo A. Perez, Sanchez L. E. Bailon, Cuadrado M. Tinoco, Carrasco C. Bhojwani, E. Choolani Sanchez, D. P. Ahmed, M. E. Dzhendov, T. Lindberg, F. Rutegard, M. Sundbom, M. and Mickael, C. Colucci, N. Schnider, A. Er, S. Kurnaz, E. Turkyilmaz, S. Turkyilmaz, A. Yildirim, R. Baki, B. E. Akkapulu, N. Karahan, O. Damburaci, N. Hardwickt, R. and Safranek, P. Sujendran, V. Bennett, J. Afzal, Z. and Shrotri, M. Chan, B. Exarchou, K. Gilbert, T. Amalesh, T. Mukherjee, D. Mukherjee, S. Wiggins, T. H. Kennedy, R. McCain, S. Harris, A. Dobson, G. Davies, N. and Wilson, I. Mayo, D. Bennett, D. Young, R. Manby, P. and Blencowe, N. Schiller, M. Byrne, B. Mitton, D. Wong, V. and Elshaer, A. Cowen, M. Menon, V. Tan, L. C. and McLaughlin, E. Koshy, R. Sharp, C. Brewer, H. Das, N. and Cox, M. Al Khyatt, W. Worku, D. Iqbal, R. Walls, L. and McGregor, R. Fullarton, G. Macdonald, A. MacKay, C. and Craig, C. Dwerryhouse, S. Hornby, S. Jaunoo, S. Wadley, M. Baker, C. Saad, M. Kelly, M. Davies, A. Di Maggio, F. McKay, S. Mistry, P. Singhal, R. Tucker, O. and Kapoulas, S. Powell-Brett, S. Davis, P. Bromley, G. and Watson, L. Verma, R. Ward, J. Shetty, V. Ball, C. and Pursnani, K. Sarela, A. Sue, Ling H. Mehta, S. Hayden, J. To, N. Palser, T. Hunter, D. Supramaniam, K. and Butt, Z. Ahmed, A. Kumar, S. Chaudry, A. Moussa, O. and Kordzadeh, A. Lorenzi, B. Wilson, M. Patil, P. Noaman, I. Willem, J. Bouras, G. Evans, R. Singh, M. and Warrilow, H. Ahmad, A. Tewari, N. Yanni, F. Couch, J. and Theophilidou, E. Reilly, J. J. Singh, P. van Boxel, Gijs and Akbari, K. Zanotti, D. Sgromo, B. Sanders, G. and Wheatley, T. Ariyarathenam, A. Reece-Smith, A. Humphreys, L. and Choh, C. Carter, N. Knight, B. Pucher, P. and Athanasiou, A. Mohamed, I. Tan, B. Abdulrahman, M. and Vickers, J. Akhtar, K. Chaparala, R. Brown, R. Alasmar, M. M. A. Ackroyd, R. Patel, K. Tamhankar, A. Wyman, A. and Walker, R. Grace, B. Abbassi, N. Slim, N. Ioannidi, L. Blackshaw, G. Havard, T. Escofet, X. Powell, A. and Owera, A. Rashid, F. Jambulingam, P. Padickakudi, J. and Ben-Younes, H. Mccormack, K. Makey, I. A. Karush, M. K. and Seder, C. W. Liptay, M. J. Chmielewski, G. Rosato, E. L. and Berger, A. C. Zheng, R. Okolo, E. Singh, A. Scott, C. D. and Weyant, M. J. Mitchell, J. D. Oesophago-Gastric Anastomotic

Abstract

Background: No evidence currently exists characterising global outcomes following major cancer surgery, including esophageal cancer. Therefore, this study aimed to characterise impact of high income countries (HIC) versus low and middle income countries (LMIC) on the outcomes following esophagectomy for esophageal cancer. Method: This international multi-center prospective study across 137 hospitals in 41 countries included patients who underwent an esophagectomy for esophageal cancer, with 90-day follow-up. The main explanatory variable was country income, defined according to the World Bank Data classification. The primary outcome was 90-day postoperative mortality, and secondary outcomes were composite leaks (anastomotic leak or conduit necrosis) and major complications (Clavien-Dindo Grade III-V). Multivariable generalized estimating equation models were used to produce adjusted odds ratios (ORs) and 95% confidence intervals (CI95%). Results: Between April 2018 to December 2018, 2247 patients were included. Patients from HIC were more significantly older, with higher ASA grade, and more advanced tumors. Patients from LMIC had almost three-fold increase in 90-day mortality, compared to HIC (9.4% vs 3.7%, p < 0.001). On adjusted analysis, LMIC were independently associated with higher 90-day mortality (OR: 2.31, CI95%: 1.17-4.55, p = 0.015). However, LMIC were not independently associated with higher rates of anastomotic leaks (OR: 1.06, CI95%: 0.57-1.99, p = 0.9) or major complications (OR: 0.85, CI95%: 0.54-1.32, p = 0.5), compared to HIC. Conclusion: Resections in LMIC were independently associated with higher 90-day postoperative mortality, likely reflecting a failure to rescue of these patients following esophagectomy, despite similar composite anastomotic leaks and major complication rates to HIC. These findings warrant further research, to identify potential issues and solutions to improve global outcomes following esophagectomy for cancer. (C) 2020 Elsevier Ltd, BASO similar to The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.

Published
2021

20. Postoperative outcomes in oesophagectomy with trainee involvement

Author

Evans, R. P. T. Hodson, J. Kamarajah, S. K. Griffiths, E. A. and Singh, P. Alderson, D. Bundred, J. Gossage, J. and Jefferies, B. McKay, S. Mohamed, I Nepogodiev, D. and Siaw-Acheampong, K. van Hillegersberg, R. Vohra, R. and Wanigasooriya, K. Whitehouse, T. Gjata, A. Moreno, I, J. and Takeda, F. R. Kidane, B. Castro, R. Guevara Harustiak, T. and Bekele, A. Kechagias, A. Gockel, I Kennedy, A. Da Roit, A. Bagajevas, A. Azagra, J. S. Mahendran, H. A. and Mejia-Fernandez, L. Wijnhoven, B. P. L. El Kafsi, J. Sayyed, R. H. Sousa, M. Sampaio, A. S. Negoi, I Blanco, R. and Wallner, B. Schneider, P. M. Hsu, P. K. Isik, A. and Gananadha, S. Wills, V Devadas, M. Duong, C. Talbot, M. and Hii, M. W. Jacobs, R. Andreollo, N. A. Johnston, B. and Darling, G. Isaza-Restrepo, A. Rosero, G. Arias-Amezquita, F. Raptis, D. Gaedcke, J. Reim, D. Izbicki, J. and Egberts, J. H. Dikinis, S. Kjaer, D. W. Larsen, M. H. and Achiam, M. P. Saarnio, J. Theodorou, D. Liakakos, T. and Korkolis, D. P. Robb, W. B. Collins, C. Murphy, T. and Reynolds, J. Tonini, V Migliore, M. Bonavina, L. and Valmasoni, M. Bardini, R. Weindelmayer, J. Terashima, M. and White, R. E. Alghunaim, E. Elhadi, M. Leon-Takahashi, A. M. and Medina-Franco, H. Lau, P. C. Okonta, K. E. Heisterkamp, J. Rosman, C. Beban, G. Babor, R. Gordon, A. and Rossaak, I, J. Pal, I, K. M. Qureshi, A. U. Naqi, S. A. and Syed, A. A. Barbosa, J. Vicente, C. S. Leite, J. Freire, J. Casaca, R. Costa, R. C. T. Scurtu, R. R. Mogoanta, S. S. Bolca, C. Constantinoiu, S. Sekhniaidze, D. So, J. B. Y. Gacvski, G. Loureiro, C. Pera, M. Bianchi, A. and Gijon, M. Moreno Fernandez, J. Martin Carrera, M. S. Trugeda and Vallve-Bernal, M. Pascual, M. A. Citores Elmahi, S. and Halldestam, I Hedberg, J. Monig, S. Gutknecht, S. Tez, M. Guner, A. Tirnaksiz, T. B. Colak, E. Sevinc, B. and Hindmarsh, A. Khan, I Khoo, D. Byrom, R. Gokhale, J. and Wilkerson, P. Jain, P. Chan, D. Robertson, K. Iftikhar, S. Skipworth, R. Forshaw, M. Higgs, S. Nijjar, R. and Viswanath, Y. K. S. Turner, P. Dexter, S. Boddy, A. and Allum, W. H. Oglesby, S. Cheong, E. Beardsmore, D. and Maynard, N. Berrisford, R. Mercer, S. Puig, S. Melhado, R. Kelty, C. Underwood, T. Dawas, K. Lewis, W. and Al-Bahrani, A. Bryce, G. Thomas, M. Arndt, A. T. and Palazzo, F. Meguid, R. A. Fergusson, J. Beenen, E. and Mosse, C. Salim, J. Cheah, S. Wright, T. Cerdeira, M. P. and McQuillan, P. Richardson, M. Liem, H. Spillane, J. and Yacob, M. Albadawi, F. Thorpe, T. Dingle, A. Cabalag, C. and Loi, K. Fisher, O. M. Ward, S. Read, M. Johnson, M. and Bassari, R. Bui, H. Cecconello, I Sallum, R. A. A. and da Rocha, J. R. M. Lopes, L. R. Tercioti, Jr., V. Coelho, J. D. S. Ferrer, J. A. P. Buduhan, G. Tan, L. Srinathan, S. and Shea, P. Yeung, J. Allison, F. Carroll, P. and Vargas-Barato, F. Gonzalez, F. Ortega, J. Nino-Torres, L. and Beltran-Garcia, T. C. Castilla, L. Pineda, M. Bastidas, A. Gomez-Mayorga, J. Cortes, N. Cetares, C. Caceres, S. and Duarte, S. Pazdro, A. Snajdauf, M. Faltova, H. and Sevcikova, M. Mortensen, P. B. Katballe, N. Ingemann, T. and Morten, B. Kruhlikava, I Ainswort, A. P. Stilling, N. M. and Eckardt, J. Holm, J. Thorsteinsson, M. Siemsen, M. and Brandt, B. Nega, B. Teferra, E. Tizazu, A. Kauppila, J. S. Koivukangas, V Merilainen, S. Gruetzmann, R. Krautz, C. Weber, G. Golcher, H. Emons, G. Azizian, A. and Ebeling, M. Niebisch, S. Kreuser, N. Albanese, G. Hesse, J. Volovnik, L. Boecher, U. Reeh, M. Triantafyllou, S. and Schizas, D. Michalinos, A. Baili, E. Mpoura, M. and Charalabopoulos, A. Manatakis, D. K. Balalis, D. Bolger, J. and Baban, C. Mastrosimone, A. McAnena, O. Quinn, A. and Suilleabhain, C. B. O. Hennessy, M. M. Ivanovski, I. Khizer, H. Ravi, N. Donlon, N. Cervellera, M. Vaccari, S. and Bianchini, S. Sartarelli, L. Asti, E. Bernardi, D. and Merigliano, S. Provenzano, L. Scarpa, M. Saadeh, L. and Salmaso, B. De Manzoni, G. Giacopuzzi, S. La Mendola, R. and De Pasqual, C. A. Tsubosa, Y. Niihara, M. Irino, T. and Makuuchi, R. Ishii, K. Mwachiro, M. Fekadu, A. Odera, A. and Mwachiro, E. AlShehab, D. Ahmed, H. A. Shebani, A. O. and Elhadi, A. Elnagar, F. A. Elnagar, H. F. Makkai-Popa, S. T. Wong, L. F. Yunrong, T. Thanninalai, S. Aik, H. C. and Soon, P. W. Huei, T. J. Basave, H. N. L. and Cortes-Gonzalez, R. Lagarde, S. M. van Lanschot, J. J. B. and Cords, C. Jansen, W. A. Martijnse, I Matthijsen, R. and Bouwense, S. Klarenbeek, B. Verstegen, M. van Workum, F. and Ruurda, J. P. van der Veen, A. van den Berg, J. W. Evenett, N. Johnston, P. Patel, R. MacCormick, A. Young, M. and Smith, B. Ekwunife, C. Memon, A. H. Shaikh, K. Wajid, A. and Khalil, N. Haris, M. Mirza, Z. U. Qudus, S. B. A. and Sarwar, M. Z. Shehzadi, A. Raza, A. Jhanzaib, M. H. and Farmanali, J. Zakir, Z. Shakeel, O. Nasir, I Khattak, S. and Baig, M. Noor, M. A. Ahmed, H. H. Naeem, A. Pinho, A. C. da Silva, R. Bernardes, A. Campos, J. C. Matos, H. and Braga, T. Monteiro, C. Ramos, P. Cabral, F. Gomes, M. P. Martins, P. C. Correia, A. M. Videira, J. F. and Ciuce, C. Drasovean, R. Apostu, R. Paitici, S. Racu, A. E. Obleaga, V, C. Beuran, M. Stoica, B. Ciubotaru, C. and Negoita, V Cordos, I Birla, R. D. Predescu, D. and Hoara, P. A. Tomsa, R. Shneider, V Agasiev, M. Ganjara, I Gunjic, D. Veselinovic, M. Babic, T. Chin, T. S. and Shabbir, A. Kim, G. Crnjac, A. Samo, H. del Val, I. Diez and Leturio, S. Ramon, J. M. Dal Cero, M. Rifa, S. Rico, M. Pomar, A. Pagan Corcoles, J. A. Martinez Miravalles, J. L. Rodicio Pais, S. A. Turienzo, S. A. Alvarez, L. S. and Campos, V, P. Rendo, A. G. Garcia, S. S. Santos, E. P. G. and Martinez, E. T. Diaz, M. J. Fernandez Alvarez, C. Magadan and Martin, V. Concepcion Lopez, C. Diaz Rodrigo, A. Rosat and Sanchez, L. E. Perez Cuadrado, M. Bailon Carrasco, C. Tinoco and Bhojwani, E. Choolani Sanchez, D. P. Ahmed, M. E. Dzhendov, T. Lindberg, F. Rutegard, M. Sundbom, M. Mickael, C. and Colucci, N. Schnider, A. Er, S. Kurnaz, E. Turkyilmaz, S. Turkyilmaz, A. Yildirim, R. Baki, B. E. Akkapulu, N. and Karahan, O. Damburaci, N. Hardwick, R. Safranek, P. and Sujendran, V Bennett, J. Afzal, Z. Shrotri, M. Chan, B. and Exarchou, K. Gilbert, T. Amalesh, T. Mukherjee, D. and Mukherjee, S. Wiggins, T. H. Kennedy, R. McCain, S. and Harris, A. Dobson, G. Davies, N. Wilson, I Mayo, D. and Bennett, D. Young, R. Manby, P. Blencowe, N. Schiller, M. Byrne, B. Mitton, D. Wong, V Elshaer, A. Cowen, M. Menon, V Tan, L. C. McLaughlin, E. Koshy, R. and Sharp, C. Brewer, H. Das, N. Cox, M. Al Khyatt, W. and Worku, D. Iqbal, R. Walls, L. McGregor, R. Fullarton, G. and Macdonald, A. MacKay, C. Craig, C. Dwerryhouse, S. and Hornby, S. Jaunoo, S. Wadley, M. Baker, C. Saad, M. and Kelly, M. Davies, A. Di Maggio, F. Mistry, P. Singhal, R. Tucker, O. Kapoulas, S. Powell-Brett, S. Davis, P. and Bromley, G. Watson, L. Verma, R. Ward, J. Shetty, V and Ball, C. Pursnani, K. Sarela, A. Ling, H. Sue Mehta, S. Hayden, J. To, N. Palser, T. Hunter, D. and Supramaniam, K. Butt, Z. Ahmed, A. Kumar, S. Chaudry, A. and Moussa, O. Kordzadeh, A. Patil, P. Noaman, I Willem, J. Bouras, G. Evans, R. Singh, M. Warrilow, H. and Ahmad, A. Tewari, N. Yanni, F. Couch, J. Theophilidou, E. Reilly, J. J. van Boxel, G. Akbari, K. Zanotti, D. and Sgromo, B. Sanders, G. Wheatley, T. Ariyarathenam, A. and Reece-Smith, A. Humphreys, L. Choh, C. Carter, N. and Knight, B. Pucher, P. Athanasiou, A. Tan, B. and Abdulrahman, M. Vickers, J. Akhtar, K. Chaparala, R. and Brown, R. Alasmar, M. M. A. Ackroyd, R. Patel, K. and Tamhankar, A. Wyman, A. Walker, R. Grace, B. Abbassi, N. and Slim, N. Ioannidi, L. Blackshaw, G. Havard, T. and Escofet, X. Powell, A. Owera, A. Rashid, F. Jambulingam, P. Padickakudi, J. Ben-Younes, H. McCormack, K. Makey, I. A. Karush, M. K. Seder, C. W. Liptay, M. J. and Chmielewski, G. Rosato, E. L. Berger, A. C. Zheng, R. and Okolo, E. Singh, A. Scott, C. D. Weyant, M. J. Mitchell, J. D. West Midlands Res Collaborative

Abstract

Background The complexity of oesophageal surgery and the significant risk of morbidity necessitates that oesophagectomy is predominantly performed by a consultant surgeon, or a senior trainee under their supervision. The aim of this study was to determine the impact of trainee involvement in oesophagectomy on postoperative outcomes in an international multicentre setting. Methods Data from the multicentre Oesophago-Gastric Anastomosis Study Group (OGAA) cohort study were analysed, which comprised prospectively collected data from patients undergoing oesophagectomy for oesophageal cancer between April 2018 and December 2018. Procedures were grouped by the level of trainee involvement, and univariable and multivariable analyses were performed to compare patient outcomes across groups. Results Of 2232 oesophagectomies from 137 centres in 41 countries, trainees were involved in 29.1 per cent of them (n = 650), performing only the abdominal phase in 230, only the chest and/or neck phases in 130, and all phases in 315 procedures. For procedures with a chest anastomosis, those with trainee involvement had similar 90-day mortality, complication and reoperation rates to consultant-performed oesophagectomies (P = 0.451, P = 0.318, and P = 0.382, respectively), while anastomotic leak rates were significantly lower in the trainee groups (P = 0.030). Procedures with a neck anastomosis had equivalent complication, anastomotic leak, and reoperation rates (P = 0.150, P = 0.430, and P = 0.632, respectively) in trainee-involved versus consultant-performed oesophagectomies, with significantly lower 90-day mortality in the trainee groups (P = 0.005). Conclusion Trainee involvement was not found to be associated with significantly inferior postoperative outcomes for selected patients undergoing oesophagectomy. The results support continued supervised trainee involvement in oesophageal cancer surgery. The aim of this study was to determine the impact of trainee involvement in oesophagectomy on perioperative outcomes in the international multicentre Oesophago-Gastric Anastomosis Audit (OGAA). Analysis of 2232 oesophagectomies has shown that trainee involvement did not negatively impact perioperative outcomes.

Published
2021

25. Contractor's Selection Criteria in Construction Works in Pakistan

Author

Soomro, N. U. I., Memon, A. H., Memon, N. A., and Memon, K. R.

Subjects
Sindh, construction works, Pakistan, contractor selction, selection criteria
Abstract

The contractor is the primary stakeholder in materializing a project concept. For the successful completion of any project, it is compulsory for the contractor to have relevant experience. The selection of the appropriate contractor depends on various criteria. This study aims to study these selection criteria. Based on 71 questionnaire forms received from representatives of contractor, consultant and client firms involved in execution works of construction activities it is found that quality, bid amount, technical capability, financial stability, and experience are five commonly adopted criteria for contractor selection in construction works in Pakistan. On the other hand, quality, technical capability, financial stability, equipment availability, and management capability are reported as the top five effective criteria for appropriate contractor selection for any construction project.

Published
2020
Full Text
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26. Postoperative outcomes in oesophagectomy with trainee involvement

Author

Evans, R. P. (R. P. T.), Hodson, J. (J.), Kamarajah, S. K. (S. K.), Griffiths, E. A. (E. A.), Singh, P. (P.), Alderson, D. (D.), Bundred, J. (J.), Gossage, J. (J.), Jefferies, B. (B.), McKay, S. (S.), Mohamed, I. (I), Nepogodiev, D. (D.), Siaw-Acheampong, K. (K.), van Hillegersberg, R. (R.), Vohra, R. (R.), Wanigasooriya, K. (K.), Whitehouse, T. (T.), Gjata, A. (A.), Moreno, J. I. (J., I), Takeda, F. R. (F. R.), Kidane, B. (B.), Castro, R. G. (R. Guevara), Harustiak, T. (T.), Bekele, A. (A.), Kechagias, A. (A.), Gockel, I. (I), Kennedy, A. (A.), Da Roit, A. (A.), Bagajevas, A. (A.), Azagra, J. S. (J. S.), Mahendran, H. A. (H. A.), Mejia-Fernandez, L. (L.), Wijnhoven, B. P. (B. P. L.), El Kafsi, J. (J.), Sayyed, R. H. (R. H.), Sousa, M. (M.), Sampaio, A. S. (A. S.), Negoi, I. (I), Blanco, R. (R.), Wallner, B. (B.), Schneider, P. M. (P. M.), Hsu, P. K. (P. K.), Isik, A. (A.), Gananadha, S. (S.), Wills, V. (V), Devadas, M. (M.), Duong, C. (C.), Talbot, M. (M.), Hii, M. W. (M. W.), Jacobs, R. (R.), Andreollo, N. A. (N. A.), Johnston, B. (B.), Darling, G. (G.), Isaza-Restrepo, A. (A.), Rosero, G. (G.), Arias-Amezquita, F. (F.), Raptis, D. (D.), Gaedcke, J. (J.), Reim, D. (D.), Izbicki, J. (J.), Egberts, J. H. (J. H.), Dikinis, S. (S.), Kjaer, D. W. (D. W.), Larsen, M. H. (M. H.), Achiam, M. P. (M. P.), Saarnio, J. (J.), Theodorou, D. (D.), Liakakos, T. (T.), Korkolis, D. P. (D. P.), Robb, W. B. (W. B.), Collins, C. (C.), Murphy, T. (T.), Reynolds, J. (J.), Tonini, V. (V), Migliore, M. (M.), Bonavina, L. (L.), Valmasoni, M. (M.), Bardini, R. (R.), Weindelmayer, J. (J.), Terashima, M. (M.), White, R. E. (R. E.), Alghunaim, E. (E.), Elhadi, M. (M.), Leon-Takahashi, A. M. (A. M.), Medina-Franco, H. (H.), Lau, P. C. (P. C.), Okonta, K. E. (K. E.), Heisterkamp, J. (J.), Rosman, C. (C.), Beban, G. (G.), Babor, R. (R.), Gordon, A. (A.), Rossaak, J. I. (J., I), Pal, K. M. (K. M., I), Qureshi, A. U. (A. U.), Naqi, S. A. (S. A.), Syed, A. A. (A. A.), Barbosa, J. 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(A.), Tirnaksiz, T. B. (T. B.), Colak, E. (E.), Sevinc, B. (B.), Hindmarsh, A. (A.), Khan, I. (I), Khoo, D. (D.), Byrom, R. (R.), Gokhale, J. (J.), Wilkerson, P. (P.), Jain, P. (P.), Chan, D. (D.), Robertson, K. (K.), Iftikhar, S. (S.), Skipworth, R. (R.), Forshaw, M. (M.), Higgs, S. (S.), Nijjar, R. (R.), Viswanath, Y. K. (Y. K. S.), Turner, P. (P.), Dexter, S. (S.), Boddy, A. (A.), Allum, W. H. (W. H.), Oglesby, S. (S.), Cheong, E. (E.), Beardsmore, D. (D.), Maynard, N. (N.), Berrisford, R. (R.), Mercer, S. (S.), Puig, S. (S.), Melhado, R. (R.), Kelty, C. (C.), Underwood, T. (T.), Dawas, K. (K.), Lewis, W. (W.), Al-Bahrani, A. (A.), Bryce, G. (G.), Thomas, M. (M.), Arndt, A. T. (A. T.), Palazzo, F. (F.), Meguid, R. A. (R. A.), Fergusson, J. (J.), Beenen, E. (E.), Mosse, C. (C.), Salim, J. (J.), Cheah, S. (S.), Wright, T. (T.), Cerdeira, M. P. (M. P.), McQuillan, P. (P.), Richardson, M. (M.), Liem, H. (H.), Spillane, J. (J.), Yacob, M. (M.), Albadawi, F. (F.), Thorpe, T. (T.), Dingle, A. (A.), Cabalag, C. (C.), Loi, K. (K.), Fisher, O. M. (O. M.), Ward, S. (S.), Read, M. (M.), Johnson, M. (M.), Bassari, R. (R.), Bui, H. (H.), Cecconello, I. (I), Sallum, R. A. (R. A. A.), da Rocha, J. R. (J. R. M.), Lopes, L. R. (L. R.), Tercioti, V. J. (V., Jr.), Coelho, J. D. (J. D. S.), Ferrer, J. A. (J. A. P.), Buduhan, G. (G.), Tan, L. (L.), Srinathan, S. (S.), Shea, P. (P.), Yeung, J. (J.), Allison, F. (F.), Carroll, P. (P.), Vargas-Barato, F. (F.), Gonzalez, F. (F.), Ortega, J. (J.), Nino-Torres, L. (L.), Beltran-Garcia, T. C. (T. C.), Castilla, L. (L.), Pineda, M. (M.), Bastidas, A. (A.), Gomez-Mayorga, J. (J.), Cortes, N. (N.), Cetares, C. (C.), Caceres, S. (S.), Duarte, S. (S.), Pazdro, A. (A.), Snajdauf, M. (M.), Faltova, H. (H.), Sevcikova, M. (M.), Mortensen, P. B. (P. B.), Katballe, N. (N.), Ingemann, T. (T.), Morten, B. (B.), Kruhlikava, I. (I), Ainswort, A. P. (A. P.), Stilling, N. M. (N. M.), Eckardt, J. (J.), Holm, J. (J.), Thorsteinsson, M. (M.), Siemsen, M. (M.), Brandt, B. (B.), Nega, B. (B.), Teferra, E. (E.), Tizazu, A. (A.), Kauppila, J. S. (J. S.), Koivukangas, V. (V), Meriläinen, S. (S.), Gruetzmann, R. (R.), Krautz, C. (C.), Weber, G. (G.), Golcher, H. (H.), Emons, G. (G.), Azizian, A. (A.), Ebeling, M. (M.), Niebisch, S. (S.), Kreuser, N. (N.), Albanese, G. (G.), Hesse, J. (J.), Volovnik, L. (L.), Boecher, U. (U.), Reeh, M. (M.), Triantafyllou, S. (S.), Schizas, D. (D.), Michalinos, A. (A.), Baili, E. (E.), Mpoura, M. (M.), Charalabopoulos, A. (A.), Manatakis, D. K. (D. K.), Balalis, D. (D.), Bolger, J. (J.), Baban, C. (C.), Mastrosimone, A. (A.), McAnena, O. (O.), Quinn, A. (A.), Suilleabhain, C. B. (C. B. O.), Hennessy, M. M. (M. M.), Ivanovski, I. (I.), Khizer, H. (H.), Ravi, N. (N.), Donlon, N. (N.), Cervellera, M. (M.), Vaccari, S. (S.), Bianchini, S. (S.), Sartarelli, L. (L.), Asti, E. (E.), Bernardi, D. (D.), Merigliano, S. (S.), Provenzano, L. (L.), Scarpa, M. (M.), Saadeh, L. (L.), Salmaso, B. (B.), De Manzoni, G. (G.), Giacopuzzi, S. (S.), La Mendola, R. (R.), De Pasqual, C. A. (C. A.), Tsubosa, Y. (Y.), Niihara, M. (M.), Irino, T. (T.), Makuuchi, R. (R.), Ishii, K. (K.), Mwachiro, M. (M.), Fekadu, A. (A.), Odera, A. (A.), Mwachiro, E. (E.), AlShehab, D. (D.), Ahmed, H. A. (H. A.), Shebani, A. O. (A. O.), Elhadi, A. (A.), Elnagar, F. A. (F. A.), Elnagar, H. F. (H. F.), Makkai-Popa, S. T. (S. T.), Wong, L. F. (L. F.), Yunrong, T. (T.), Thanninalai, S. (S.), Aik, H. C. (H. C.), Soon, P. W. (P. W.), Huei, T. J. (T. J.), Basave, H. N. (H. N. L.), Cortes-Gonzalez, R. (R.), Lagarde, S. M. (S. M.), van Lanschot, J. J. (J. J. B.), Cords, C. (C.), Jansen, W. A. (W. A.), Martijnse, I. (I), Matthijsen, R. (R.), Bouwense, S. (S.), Klarenbeek, B. (B.), Verstegen, M. (M.), van Workum, F. (F.), Ruurda, J. P. (J. P.), van der Veen, A. (A.), van den Berg, J. W. (J. W.), Evenett, N. (N.), Johnston, P. (P.), Patel, R. (R.), MacCormick, A. (A.), Young, M. (M.), Smith, B. (B.), Ekwunife, C. (C.), Memon, A. H. (A. H.), Shaikh, K. (K.), Wajid, A. (A.), Khalil, N. (N.), Haris, M. (M.), Mirza, Z. U. (Z. U.), Qudus, S. B. (S. B. A.), Sarwar, M. Z. (M. Z.), Shehzadi, A. (A.), Raza, A. (A.), Jhanzaib, M. H. (M. H.), Farmanali, J. (J.), Zakir, Z. (Z.), Shakeel, O. (O.), Nasir, I. (I), Khattak, S. (S.), Baig, M. (M.), Noor, M. A. (M. A.), Ahmed, H. H. (H. H.), Naeem, A. (A.), Pinho, A. C. (A. C.), da Silva, R. (R.), Bernardes, A. (A.), Campos, J. C. (J. C.), Matos, H. (H.), Braga, T. (T.), Monteiro, C. (C.), Ramos, P. (P.), Cabral, F. (F.), Gomes, M. P. (M. P.), Martins, P. C. (P. C.), Correia, A. M. (A. M.), Videira, J. F. (J. F.), Ciuce, C. (C.), Drasovean, R. (R.), Apostu, R. (R.), Paitici, S. (S.), Racu, A. E. (A. E.), Obleaga, C. V. (C., V), Beuran, M. (M.), Stoica, B. (B.), Ciubotaru, C. (C.), Negoita, V. (V), Cordos, I. (I), Birla, R. D. (R. D.), Predescu, D. (D.), Hoara, P. A. (P. A.), Tomsa, R. (R.), Shneider, V. (V), Agasiev, M. (M.), Ganjara, I. (I), Gunjic, D. (D.), Veselinovic, M. (M.), Babic, T. (T.), Chin, T. S. (T. S.), Shabbir, A. (A.), Kim, G. (G.), Crnjac, A. (A.), Samo, H. (H.), del Val, I. D. (I. Diez), Leturio, S. (S.), Ramon, J. M. (J. M.), Dal Cero, M. (M.), Rifa, S. (S.), Rico, M. (M.), Pomar, A. P. (A. Pagan), Corcoles, J. A. (J. A. Martinez), Miravalles, J. L. (J. L. Rodicio), Pais, S. A. (S. A.), Turienzo, S. A. (S. A.), Alvarez, L. S. (L. S.), Campos, P. V. (P., V), Rendo, A. G. (A. G.), Garcia, S. S. (S. S.), Santos, E. P. (E. P. G.), Martinez, E. T. (E. T.), Diaz, M. J. (M. J. Fernandez), Alvarez, C. M. (C. Magadan), Martin, V. C. (V. Concepcion), Lopez, C. D. (C. Diaz), Rodrigo, A. R. (A. Rosat), Sanchez, L. E. (L. E. Perez), Cuadrado, M. B. (M. Bailon), Carrasco, C. T. (C. Tinoco), Bhojwani, E. C. (E. Choolani), Sanchez, D. P. (D. P.), Ahmed, M. E. (M. E.), Dzhendov, T. (T.), Lindberg, F. (F.), Rutegard, M. (M.), Sundbom, M. (M.), Mickael, C. (C.), Colucci, N. (N.), Schnider, A. (A.), Er, S. (S.), Kurnaz, E. (E.), Turkyilmaz, S. (S.), Turkyilmaz, A. (A.), Yildirim, R. (R.), Baki, B. E. (B. E.), Akkapulu, N. (N.), Karahan, O. (O.), Damburaci, N. (N.), Hardwick, R. (R.), Safranek, P. (P.), Sujendran, V. (V), Bennett, J. (J.), Afzal, Z. (Z.), Shrotri, M. (M.), Chan, B. (B.), Exarchou, K. (K.), Gilbert, T. (T.), Amalesh, T. (T.), Mukherjee, D. (D.), Mukherjee, S. (S.), Wiggins, T. H. (T. H.), Kennedy, R. (R.), McCain, S. (S.), Harris, A. (A.), Dobson, G. (G.), Davies, N. (N.), Wilson, I. (I), Mayo, D. (D.), Bennett, D. (D.), Young, R. (R.), Manby, P. (P.), Blencowe, N. (N.), Schiller, M. (M.), Byrne, B. (B.), Mitton, D. (D.), Wong, V. (V), Elshaer, A. (A.), Cowen, M. (M.), Menon, V. (V), Tan, L. C. (L. C.), McLaughlin, E. (E.), Koshy, R. (R.), Sharp, C. (C.), Brewer, H. (H.), Das, N. (N.), Cox, M. (M.), Al Khyatt, W. (W.), Worku, D. (D.), Iqbal, R. (R.), Walls, L. (L.), McGregor, R. (R.), Fullarton, G. (G.), Macdonald, A. (A.), MacKay, C. (C.), Craig, C. (C.), Dwerryhouse, S. (S.), Hornby, S. (S.), Jaunoo, S. (S.), Wadley, M. (M.), Baker, C. (C.), Saad, M. (M.), Kelly, M. (M.), Davies, A. (A.), Di Maggio, F. (F.), Mistry, P. (P.), Singhal, R. (R.), Tucker, O. (O.), Kapoulas, S. (S.), Powell-Brett, S. (S.), Davis, P. (P.), Bromley, G. (G.), Watson, L. (L.), Verma, R. (R.), Ward, J. (J.), Shetty, V. (V), Ball, C. (C.), Pursnani, K. (K.), Sarela, A. (A.), Ling, H. S. (H. Sue), Mehta, S. (S.), Hayden, J. (J.), To, N. (N.), Palser, T. (T.), Hunter, D. (D.), Supramaniam, K. (K.), Butt, Z. (Z.), Ahmed, A. (A.), Kumar, S. (S.), Chaudry, A. (A.), Moussa, O. (O.), Kordzadeh, A. (A.), Patil, P. (P.), Noaman, I. (I), Willem, J. (J.), Bouras, G. (G.), Evans, R. (R.), Singh, M. (M.), Warrilow, H. (H.), Ahmad, A. (A.), Tewari, N. (N.), Yanni, F. (F.), Couch, J. (J.), Theophilidou, E. (E.), Reilly, J. J. (J. J.), van Boxel, G. (G.), Akbari, K. (K.), Zanotti, D. (D.), Sgromo, B. (B.), Sanders, G. (G.), Wheatley, T. (T.), Ariyarathenam, A. (A.), Reece-Smith, A. (A.), Humphreys, L. (L.), Choh, C. (C.), Carter, N. (N.), Knight, B. (B.), Pucher, P. (P.), Athanasiou, A. (A.), Tan, B. (B.), Abdulrahman, M. (M.), Vickers, J. (J.), Akhtar, K. (K.), Chaparala, R. (R.), Brown, R. (R.), Alasmar, M. M. (M. M. A.), Ackroyd, R. (R.), Patel, K. (K.), Tamhankar, A. (A.), Wyman, A. (A.), Walker, R. (R.), Grace, B. (B.), Abbassi, N. (N.), Slim, N. (N.), Ioannidi, L. (L.), Blackshaw, G. (G.), Havard, T. (T.), Escofet, X. (X.), Powell, A. (A.), Owera, A. (A.), Rashid, F. (F.), Jambulingam, P. (P.), Padickakudi, J. (J.), Ben-Younes, H. (H.), McCormack, K. (K.), Makey, I. A. (I. A.), Karush, M. K. (M. K.), Seder, C. W. (C. W.), Liptay, M. J. (M. J.), Chmielewski, G. (G.), Rosato, E. L. (E. L.), Berger, A. C. (A. C.), Zheng, R. (R.), Okolo, E. (E.), Singh, A. (A.), Scott, C. D. (C. D.), Weyant, M. J. (M. J.), and Mitchell, J. D. (J. D.)

Abstract

Background: The complexity of oesophageal surgery and the significant risk of morbidity necessitates that oesophagectomy is predominantly performed by a consultant surgeon, or a senior trainee under their supervision. The aim of this study was to determine the impact of trainee involvement in oesophagectomy on postoperative outcomes in an international multicentre setting. Methods: Data from the multicentre Oesophago-Gastric Anastomosis Study Group (OGAA) cohort study were analysed, which comprised prospectively collected data from patients undergoing oesophagectomy for oesophageal cancer between April 2018 and December 2018. Procedures were grouped by the level of trainee involvement, and univariable and multivariable analyses were performed to compare patient outcomes across groups. Results: Of 2232 oesophagectomies from 137 centres in 41 countries, trainees were involved in 29.1 per cent of them (n = 650), performing only the abdominal phase in 230, only the chest and/or neck phases in 130, and all phases in 315 procedures. For procedures with a chest anastomosis, those with trainee involvement had similar 90-day mortality, complication and reoperation rates to consultant-performed oesophagectomies (P = 0.451, P = 0.318, and P = 0.382, respectively), while anastomotic leak rates were significantly lower in the trainee groups (P = 0.030). Procedures with a neck anastomosis had equivalent complication, anastomotic leak, and reoperation rates (P = 0.150, P = 0.430, and P = 0.632, respectively) in trainee-involved versus consultant-performed oesophagectomies, with significantly lower 90-day mortality in the trainee groups (P = 0.005). Conclusions: Trainee involvement was not found to be associated with significantly inferior postoperative outcomes for selected patients undergoing oesophagectomy. The results support continued supervised trainee involvement in oesophageal cancer surgery.

Published
2021

32. Recent Eco-Friendly Developments in Personal Protective Clothing Materials for Reducing Plastic Pollution: A Review

Author

Memon, A. H., Peerzada, M. H., Muhammad, K., Memon, S. A., Mangi, S. A., and Mujtaba, G.

Subjects
protective clothing, lcsh:T58.5-58.64, lcsh:Information technology, eco-friendly fibers, GeneralLiterature_MISCELLANEOUS, plastic pollution, Jute and Ramie, lcsh:TA1-2040, lcsh:Technology (General), lcsh:T1-995, UHMPE, lcsh:Engineering (General). Civil engineering (General), conventional plastic fibers, kevlar
Abstract

Due to the industrialization increase in the 20th century, the level of hazards for public health and the demand for personnel protective clothing (PPC) have increased. The area of PPC has been steered to high tech equipment made from plastic-based materials, which are derived from non-renewable sources and have a long life cycle expanding from hundreds to thousands of years, after their end of useful life. This paper reviews the information related to conventional plastic-based fibers, their properties, advantages, disadvantages, and applications in the battlefield, industry, automobiles, etc. This paper provides a basis for the selection of natural fibers and the replacement of conventional plastic-based fibers to reduce the plastic content in protective clothing or other composites. A comparative analysis of technological, environmental, economic and legal aspects of plastic-based and environment-friendly natural fibers is presented. Natural fiber-based composite protective clothing is found to be environment-friendly and considered to have prospects for the future due to its comparative technological, environmental, economic and legal advantages.

Published
2019

33. Anti-uterine fibroid effect of standardized labisia pumila var. Alata extracts in vitro and in human uterine fibroid cancer xenograft model

Author

Zakaria, Norfahana, Mohd, Khamsah S., Saeed, Mohammed A. A., Hassan, Loiy E. A., Shafaei Darestani, Armaghan, Al-Suede, Fouad S. R., Memon, Abdul H., Ismail, Zhari, Zakaria, Norfahana, Mohd, Khamsah S., Saeed, Mohammed A. A., Hassan, Loiy E. A., Shafaei Darestani, Armaghan, Al-Suede, Fouad S. R., Memon, Abdul H., and Ismail, Zhari

Abstract

Background: Uterine fibroids are a common type of solid tumor presenting in women of reproductive age. There are very few alternative treatment available from conventional treatment involving surgeries. Labisia pumila var. alata or locally known as ‘Kacip Fatimah’ was widely used as traditional medicine in Malaysia. This plant has been used to maintain a healthy female reproductive system. The present study aimed to evaluate anti fibroid potential of L. pumila extracts through in vitro apoptosis activity against uterine leiomyoma cells (SK-UT-1) and in uterine leiomyoma xenograft model. Evaluation of bioactive markers content were also carried out. Methods: Apoptotic induction of the extracts was determined by morphological examination of AO/PI dual staining assay by flourescent microscopy and flow cytometry analysis on Annexin V-FITC/PI stained cells. In vivo study was done in immune-compromised mouse xenograft model. HPLC analysis was employed to quantify marker compounds. Results: Morphological analysis showed L. pumila induced apoptosis in a dose dependent manner against SK-UT-1 cells. In vivo study indicated that L. pumila significantly suppressed the growth of uterine fibroid tumor. All tested extracts contain bioactive marker of gallic acid and cafeic acid. Conclusion: This work provide significant data of the potential of L. pumila in management of uterine fibroids.

Published
2020

34. Maximum Power Tracking System Based on Power Electronic Topology for Wind Energy Conversion System Applications

Author

Hussain, Musavir, Baloch, Mazhar H., Umer, Farhana, Memon, Abdul H., and Pathan, Noman K.

Subjects
Physics::Space Physics, variable speed, wind-generator system (WGS), boost converter, Physics::Atmospheric and Oceanic Physics, maximum power tracker system (MPTS)
Abstract

Wind energy has emerged as a dominant alternative power generation source. Conventional energy resources are depleting and their increasing cost cannot be ignored. Wind energy has taken an important role in replacing fossil fuels and nuclear energy. However, optimal exploitation of wind energy systems has remained a thought-provoking problem due to the nonlinear behavior of the wind speed. Distribution generation system and isolated micro-grid (MG) are mainly used in a wind energy system in order to utilize maximum potential of wind through the maximum power tracking algorithm based on DCDC boost power electronic converter. In this paper, authors propose a technique which is effectively workable, highly reliable, of low cost and induces less mechanical stress on the wind generator system (WGS). Experimental results of the proposed system verify that the effectiveness near optimal WGS output power increased approximately up to 50%. Thus, better exploitation of the available wind power is obtained under low wind speeds.

Published
2018
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37. MORPHOLOGICAL AND MORPHOMETRIC ANALYSIS OF GENUS ERIOBOTRYA LINDL. (ROSACEAE).

Author

Idrees, M., Pathak, M. L., Memon, N. H., Khan, S., Zhang, Z. Y., and Gao, X. F.

Subjects
PRINCIPAL components analysis, ROSACEAE, TYPHA latifolia, FACTOR analysis
Abstract

Morphometric analysis based on 40 morphological (quantitative and qualitative) characters were used to evaluate the patterns of morphological variations and to better understand the taxonomic relationship of the whole genus of Eriobotrya. Cluster analysis, principal component analysis and principal coordinate analysis were performed for both quantitative and qualitative morphological characters. Result of factor analysis revealed that leaf blade length and width, bract shape, bract length and width, sepal length, petal length and width, petal state, style number, fruit length and width were highly positive significant, whereas pedicel length and style state were highly negative significant. Cluster analysis revealed that all the taxa of the genus grouped into 4 clusters. Cluster 1 included 18 taxa (E. bengalensis, E. bengalensis var. angustifolia, E. bengalensis var. intermedia, E. stipularis, E. dubia, E. serrata, E. obovata, E. poilanei, E. elliptica var. petelotii, E. longifolia, E. angustifolia, E. petiolata, E. deflexa, E. deflexa var. buisanensis, E. kwangsiensis, E. fulvicoma, E. cavaleriei and E. glabrescens). Cluster II included 16 taxa (E. henryi, E. seguinii, E. hookeriana, E. japonica, E. × daduheensis, E. malipoensis, E. elliptica, E. grandiflora, E. fragrans, E. fragrans var. furfuracea, E. prinoides, E. prinoides var. laotica, E. salwinensis, E. tengyuehensis, E. latifolia and E. glabrescens var. victoriensis). Two species (E. wardii and E. platyphylla) formed a distinct cluster and considered to be doubtful to the genus. The quantitative and qualitative characters studies will be particularly useful for further identification and systematic of the genus Eriobotrya. [ABSTRACT FROM AUTHOR]

Published
2021
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38. Frequency Of Patients Presening With Obesity-Hypoventilation (Pickwickian) Syndrome At A Tertiary Care Hospital

Author

Rashid Ahmed Khan*, Muhammad Iqbal, Nasrullah Aamir, Hamid Nawaz Ali Memon, Aatir H. Rajput and Muhammad Muneeb

Subjects
Obesity, Hypoventilation, Pickwickian Syndrome, Hypercapnia and Hypoxemia
Abstract

Background: Obesity, around the world, is becoming more and more common. With greater prevalence, more of the mal-effects have begun to manifest, among which obesity-hypoventilation syndrome is the most under-rated, seldom-recognized and mostly un-diagnosed condition, despite its serious impact on the quality of life of an individual. Objective: This research hopes to study the frequency of obesity-hypoventilation (pickwickian) syndrome among patients presenting at a tertiary care hospital.Methodology: The study was carried out on patients presenting at department of pulmonology (chest medicine) at Liaquat University Hospital from June 2016 to June 2017. The data was collected using a structured interview based questionnaire and relevant investigations after taking written informed consent and all necessary measures were employed to ensure anonymity of the data subjects. The data obtained was analyzed using Microsoft Excel 2016 and SPSS v. 21.0. The frequency of patients was analyzed and its trends studied against gender, sociodemographic variations and time of the year.Results: 13 male and 12 female patients presented with obesity-hypoventilation syndrome in the designated study duration. Among the total 25 patients, 1 patient belonged to the lower economic class, 7 belonged to the middle economic class and 17 patients belonged to upper economic class. Most patients presented during the winter months and least during the summer months. The mean BMI of the subjects stood at 31 kg/m2 and the mean age was recorded to be 54 years.Conclusion: After careful consideration, the results make it abundantly clear that, patients with obesity-hypoventilation syndrome scarcely, but do present at tertiary care hospitals at our settings. What is worrisome however, is that with the predicted increase in obesity, the frequency of patients may rise and thus healthcare professionals should practice vigilantly and advise appropriate investigations, especially arterial blood gasses whenever the disease is suspected in obese patients. Keywords: Obesity, Hypoventilation, Pickwickian Syndrome, Hypercapnia and Hypoxemia.

Published
2018
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39. PROGNOSTIC VALIDITY OF SIX MINUTE WALK TEST (SMWT) & RESULTANT DYSPNOEA RATING IN PATIENTS WITH PRIMARY PULMONARY HYPERTENSION

Author

Rashid Ahmed Khan*, Nasrullah Aamir, Muhammad Iqbal, Hamid Nawaz Ali Memon, Aatir H. Rajput and Muhammad Muneeb

Subjects
Primary Pulmonary Hypertension, Hypertension. SMWT, SMWD, Dyspnea, Blood Pressure, Prognostic Value
Abstract

Objective: This study hopes to assess the prognostic validity of desaturation during a SMWT using repeated evaluation against the Baseline Dyspnea Index - dyspnea rating in patients of primary pulmonary hypertension. Methodology:This retrospective analysis comprised of the SMWT and dyspnea rating records of a total of 377 pre-diagnosed patients of primary pulmonary hypertension, re-approached after their initial presentation at a pulmonology specialist setting after a minimum of 1 year of initial recorded results of SMWT and Baseline Dyspnea Index and evaluated again against the Baseline Dyspnea Index and a 3 day – Mean Blood Pressure. The data obtained was analyzed using SPSS v. 21. 0 and the results used to draw a conclusion. Results: Among the 37 subjects, 23 were males while 14 were females. Mean age of the subjects was 43 years. The mean distance result of the SMWT was 347 m with the highest and lowest values measuring at 329 and 378 respectively. Upon re-approaching and evaluation against the Baseline Dyspnea Index and a 3 day – Mean Blood Pressure, the patients with yielded interesting results. Patients with an SMWD of more than 347, reported a subsequent mean Baseline Dyspnea Index of Grade 3 or more, while patients with a SMWD of less than 347 reported a subsequent mean Baseline Dyspnea Index of Grade 2 or less. In addition, patients with an SMWD of more than 347, reported a subsequent 3 day – Mean Blood Pressure of less than 130/90 mmHg, while patients with a SMWD of less than 347 reported a subsequent mean 3 day – Mean Blood Pressure of more than 130/90 mmHg. Conclusion: After careful consideration, it can safely be concluded that a mean SMWD of 337 or less is prognostic of better eventual 1 year outcome. While a SMWD of more than 337 is prognostic of worse eventual 1 year outcome evaluated against the Baseline Dyspnea Index – Dyspnea rating. Keywords: Primary Pulmonary Hypertension, Hypertension. SMWT, SMWD, Dyspnea, Blood Pressure, Prognostic Value

Published
2018
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40. Casual Comparative Analysis Of Incidence & Extent Of Erectile Dysfunction Among Smokers & Non-Smokers Presenting At A Male Sexual Health Clinic In Hyderabad

Author

Muhammad Iqbal *, Nadeem Memon, Sohail Ahmed Almani, Syed Jahangir, Maryam Iqbal, Hamid Nawaz Ali Memon, Aatir H. Rajput And Muhammad Muneeb

Subjects
Erectile Dysfunction, Smoking, The International Index of Erectile Function (IIEF-5) Questionnaire, Sexual Health & Sex Related Quality of Life
Abstract

Background: The term ‘‘erectile dysfunction’’ (ED) is defined as the inability to achieve and maintain an erection sufficient for satisfactory sexual performance. ED affects millions of men throughout the world, with a strong negative effect on the quality of life and well-being of men and couples. The etiology of ED once was considered to be mainly psychogenic. However, because of advances in the understanding of the physiology of erection and the development of modern diagnostic techniques, it is now generally agreed that the etiology of ED is often multifactorial, with psychological, neurological, endocrine, vascular, traumatic or iatrogenic causes.Objective: Smoking, among many other causes, is believed to be associated with smoking. This study hopes to compare the incidence and extent of erectile dysfunction (ED) among smokers and non-smokers presenting at a male sexual health clinic in an attempt to further understand the association. Methodology: This casual-comparative analysis was conducted upon a total of 64 male patients presenting with erectile dysfunction at a sexual health clinic. Inquiries regarding the habit of smoking were made using a structured interview based questionnaire and extent of erectile dysfunction was investigated using the “International Index of Erectile Function (IIEF-5) Questionnaire”. The data obtained was analyzed using MS. Excel 2017 and SPSS v. 21.0. Results: Smokers showed a markedly high incidence when compared to non-smokers. The extent of erectile dysfunction too was observed to be significantly high among smokers in comparison to non-smokers. Ex-smokers too showed a more worrisome IIEF-5 score, when compared to non-smokers. Conclusion: The results obtained, make it abundantly clear that, the association between the incidence and extent of erectile dysfunction and smoking is strong. Although, the research does not attempt to control co-founding variables, the results can be regarded as reliable due to the sheer difference in incidence and extent of erectile dysfunction between smokers and non-smokers. Keywords: Erectile Dysfunction, Smoking, The International Index of Erectile Function (IIEF-5) Questionnaire, Sexual Health & Sex Related Quality of Life.

Published
2017
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41. Retrospective Quantitative Analysis Of Incidence Of Myocardial Infarction Among Known Patients Of Ischaemic Stroke

Author

Muhammad Iqbal*, Suhail Ahmed Almani, Fasih Ahmed Hashmi, Hamid Memon, Aatir H. Rajput, Muhammad Muneeb and Syed Jehangir

Subjects
Ischaemic Stroke, Myocardial Infarction, Retrospective & Quantitative Analysis, cardiovascular diseases
Abstract

Objective: Whether or not patients of ischaemic stroke should undergo investigations for coronary artery disease (asymptomatic) is debatable yet scarcely ever have the risk of vascular death and myocardial infarction after a stroke been quantitatively evaluated. Immediately preceding the incidence of an acute stroke, a high risk of recurrence is seen yet the prime factor driving up mortality rates after a stroke is myocardial infarction and coronary artery disease. This paper hopes to indirectly assess the risk of schaemic heart disease in patients who have formerly faced episode(s) of acute ischaemic stroke. Methodology: A sample of consecutive 100 known cases of Myocardial Infarction presenting at Liaquat University Hospital, Department of Cardiology (Emergency and Out-Patient Department) was included in this retrospective quantitative analysis during the month of January 2016. After taking written informed consent, inquiries were made regarding previous incidences of ischaemic stroke (if any) and the time elapsed since the incident. Inquiries were also made regarding previous history of cardiac illness. The data obtained was analyzed using SPSS v. 17. Results: 60% of the sample comprised of males while 40% comprised of females, each with a mean age of 59 years and 65 years respectively. 20 out of a total of 100 patients presenting with Myocardial Infarction gave affirmative previous history of ischaemic stroke. 80% of the patients with a positive history of ischaemic stroke were males while the remaining 20% with a positive history were females. Conclusion : A careful evaluation of the results reveals that incidence of myocardial infarction among known patients of ischaemic stroke is worrisomely high. More worryingly the incidence is particularly higher in males as compared to females. Keywords: Ischaemic Stroke, Myocardial Infarction, Retrospective & Quantitative Analysis

Published
2017
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49. Oculocutaneous Albinism in Pakistan: A Review

Author

Shah, Sajjad Ali, primary, Saeed, Anwar, additional, Irshad, Muhammad, additional, Ellahi Babar, Masroor, additional, Hussain, Tanveer, additional, Wajid, Abdul, additional, Memon, Nazakat H, additional, and Idrees, Muhammad, additional

Published
2018
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