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8. Effect of adequacy of empirical antibiotic therapy for hospital-acquired bloodstream infections on intensive care unit patient prognosis: a causal inference approach using data from the Eurobact2 study

Author

Tabah, Alexis, Lipman, Jeffrey, Pollock, Hamish, Ben Margetts, Udy, Andrew, Young, Meredith, Bhadange, Neeraj, Tyler, Steven, Ledtischke, Anne, Finnis, Mackenzie, Dwivedi, Jyotsna, Saxena, Manoj, Biradar, Vishwanath, Soar, Natalie, Sarode, Vineet, Brewster, David, Regli, Adrian, Weeda, Elizabeth, Ahmed, Samiul, Fourie, Cheryl, Laupland, Kevin, Ramanan, Mahesh, Walsham, James, Meyer, Jason, Litton, Edward, Maria Palermo, Anna, Yap, Timothy, Eroglu, Ege, George Attokaran, Antony, Jaramillo, C'havala, Nafees, Khalid Mk, Nafees, Khalid Mahmood Khan, Aqilah Haji Abd Rashid, Nurhikmahtul, Adi Muhamad Ibnu Walid, Haji, Mon, Tomas, Dhakshina Moorthi, P., Sudhirchandra, Shah, Sridharan, Dhadappa Damodar, Haibo, Qiu, Xie, Jianfeng, Jianfeng, Xie, Wei-Hua, Lu, Zhen, Wang, Qian, Chuanyun, Luo, Jili, Chen, Xiaomei, Wang, Hao, Zhao, Peng, Zhao, Juan, Wusi, Qiu, Mingmin, Chen, Xu, Lei, Yin, Chengfen, Wang, Ruilan, Wang, Jinfeng, Yin, Yongjie, Zhang, Min, Ye, Jilu, Hu, Chungfang, Zhou, Suming, Huang, Min, Yan, Jing, Wang, Yan, Qin, Bingyu, Ye, Ling, Weifeng, Xie, Peije, Li, Geng, Nan, Ling, Lowell, Hayashi, Yoshiro, Karumai, Toshiyuki, Yamasaki, Masaki, Hashimoto, Satoru, Hosokawa, Koji, Makino, Jun, Matsuyoshi, Takeo, Kuriyama, Akira, Shigemitsu, Hidenobu, Mishima, Yuka, Nagashima, Michio, Yoshida, Hideki, Fujitani, Shigeki, Omori, Koichiro, Rinka, Hiroshi, Saito, Hiroki, Atobe, Kaori, Kato, Hideaki, Takaki, Shunsuke, Sulaiman, Helmi, Shahnaz Hasan, M., Fadhil Hadi Jamaluddin, Muhamad, Pheng, Lee See, Visvalingam, Sheshendrasurian, Thing Liew, Mun, Ling Danny Wong, Siong, Khang Fong, Kean, Bt Abdul Rahman, Hamizah, Md Noor, Zuraini, Lee, Kok Tong, Hamid Azman, Abd., Zulfakar Mazlan, Mohd, Ali, Saedah, Hernandez, Aaron Mark, Abello, Anton, Jeon, Kyeongman, Lee, Sang-Min, Park, Sunghoon, Park, Seung Yong, Yoon Lim, Sung, Kwa, Andrea Lay Hoon, Yuan Goh, Qing, Ng, Shin Yi, An Lie, Sui, Junyang Goh, Ken, Yunkai Li, Andrew, Ong, Caroline Yu Ming, Yan Lim, Jia, Lishan Quah, Jessica, Ng, Kangqi, Xiang Long Ng, Louis, Yeh, Tony Yu-Chang, Chang Yeh, Yu, Chou, Nai-Kuan, Cia, Cong-Tat, Hu, Ting-Yu, Kuo, Li-Kuo, Ku, Shih-Chi, Wongsurakiat, Phunsup, Apichatbutr, Yutthana, Chiewroongroj, Supattra, Alsisi, Adel, Nadeem, Rashid, El Houfi, Ashraf, Elhadidy, Amr, Barsoum, Mina, Osman, Nermin, Mostafa, Tarek, Elbahnasawy, Mohamed, Saber, Ahmed, Aldhalia, Amer, Elmandouh, Omar, Elsayed, Ahmed, Elbadawy, Merihan A., Awad, Ahmed K., Hemead, Hanan M., Zand, Farid, Ouhadian, Maryam, Hamid Borsi, Seyed, Mehraban, Zahra, Kashipazha, Davood, Ahmadi, Fatemeh, Savaie, Mohsen, Soltani, Farhad, Rashidi, Mahboobeh, Baghbanian, Reza, Javaherforoosh, Fatemeh, Amiri, Fereshteh, Kiani, Arash, Amin Zargar, Mohammad, Mahmoodpoor, Ata, Aalinezhad, Fatemeh, Dabiri, Gholamreza, Sabetian, Golnar, Sarshad, Hakimeh, Masjedi, Mansoor, Tajvidi, Ramin, Nasirodin (S.M.N.) Tabatabaei, Dr Seyed Mohammad, Ahmed, Abdullah Khudhur, Singer, Pierre, Kagan, Ilya, Rigler, Merav, Belman, Daniel, Levin, Phillip, Harara, Belal, Diab, Adei, Abillama, Fayez, Abilama, Fayez, Ibrahim, Rebecca, Fares, Aya, Elhadi, Muhammed, Buimsaedah, Ahmad, Gamra, Marwa, Aqeelah, Ahmed, Ali Mohammed Ali, Almajdoub, Gaber Sadik Homaidan, Ahmed, Almiqlash, Bushray, Bilkhayr, Hala, Bouhuwaish, Ahmad, Sa Taher, Ahmed, Abdulwahed, Eman, Abousnina, Fathi A., Khaled Hdada, Aisha, Jobran, Rania, Ben Hasan, Hayat, Shaban Ben Hasan, Rabab, Khalid Abidi, Serghini, Issam, Seddiki, Rachid, Boukatta, Brahim, Kanjaa, Nabil, Mouhssine, Doumiri, Ahmed Wajdi, Maazouzi, Dendane, Tarek, Ali Zeggwagh, Amine, Housni, Brahim, Younes, Oujidi, Hachimi, Abdelhamid, Ghannam, A., Belkhadir, Z., Abu Jayyab, Mustafa, Aithssain, Ali, Lance, Marcus, Nissar, Shaikh, Sallam, Hend, Elrabi, Omar, Almekhlafi, Ghaleb A., Awad, Maher, Aljabbary, Ahmed, Karam Chaaban, Mohammad, Abu-Sayf, Natalia, Al-Jadaan, Mohammad, Bakr, Lubna, Mounir Bouaziz, Bouaziz, Mounir, Turki, Olfa, Sellami, Walid, Vidal, Gabriela, Centeno, Pablo, Morvillo, Natalia, Oscar Acevedo, José, Mabel Lopez, Patricia, Fernández, Rubén, Segura, Matías, Aparicio, Marta, Alonzo, Irene, Nuccetelli, Yanina, Montefiore, Pablo, Arias, Mario, Felipe Reyes, Luis, Ñamendys-Silva, Silvio A., Romero-Gonzalez, Juan P., Hermosillo, Mariana, Alejandro Castillo, Roberto, Nicolás Pantoja Leal, Jesús, Garcia Aguilar, Candy, Ocotlan Gonzalez Herrera, Mara, Vladimir Espinoza Villafuerte, Missael, Lomeli-Teran, Manuel, Dominguez-Cherit, Jose G., Davalos-Alvarez, Adrian, Sánchez-Hurtado, Luis, Tejeda-Huezo, Brigitte, Perez-Nieto, Orlando R., Deloya Tomas, Ernesto, De Bus, Liesbet, De Waele, Jan, Francois, Guy, Hollevoet, Isabelle, Denys, Wouter, Bourgeois, Marc, Vanderhaeghen, Sofie F.M., Mesland, Jean-Baptiste, Henin, Pierre, Haentjens, Lionel, Biston, Patrick, Noel, Cindérella, Layos, Nathalie, Misset, Benoît, De Schryver, Nicolas, Serck, Nicolas, Wittebole, Xavier, De Waele, Elisabeth, Opdenacker, Godelive, Kovacevic, Pedja, Zlojutro, Biljana, Ina, Filipovic-Grcic, Custovic, Aida, Filipovic-Grcic, Ina, Radonic, Radovan, Vujaklija Brajkovic, Ana, Persec, Jasminka, Sakan, Sanja, Nikolic, Mario, Lasic, Hrvoje, Leone, Marc, Timsit, Jean-François, Ruppe, Etienne, Ruckly, Stephane, Montravers, Philippe, Arbelot, Charlotte, Patrier, Juliette, Zappela, N., Montravers, P., Dulac, Thierry, Castanera, Jérémy, Auchabie, Johann, Le Meur, Anthony, Marchalot, A., Beuzelin, M., Massri, Alexandre, Guesdon, Charlotte, Escudier, Etienne, Mateu, Philippe, Rosman, Jérémy, Leroy, Olivier, Alfandari, Serge, Nica, Alexandru, Souweine, Bertrand, Coupez, Elisabeth, Duburcq, Thibault, Kipnis, Eric, Bortolotti, Perrine, Le Souhaitier, Mathieu, Mira, Jean-Paul, Garcon, Pierre, Duprey, Matthieu, Thyrault, Martial, Paulet, Rémi, Philippart, François, Tran, Marc, Bruel, Cédric, Weiss, Emmanuel, Janny, Sylvie, Foucrier, Arnaud, Perrigault, Pierre-François, Djanikian, Flora, Barbier, François, Gainnier, Marc, Bourenne, Jérémy, Louis, Guillaume, Smonig, Roland, Argaud, Laurent, Baudry, Thomas, Mekonted Dessap, Armand, Razazi, Keyvan, Kalfon, Pierre, Badre, Gaëtan, Larcher, Romaric, Lefrant, Jean-Yves, Roger, Claire, Sarton, Benjamine, Silva, Stein, Demeret, Sophie, Le Guennec, Loïc, Siami, Shidasp, Aparicio, Christelle, Voiriot, Guillaume, Fartoukh, Muriel, Dahyot-Fizelier, Claire, Imzi, Nadia, Klouche, Kada, Bracht, Hendrik, Hoheisen, Sandra, Bloos, Frank, Thomas-Rueddel, Daniel, Petros, Sirak, Pasieka, Bastian, Dubler, Simon, Schmidt, Karsten, Gottschalk, Antje, Wempe, Carola, Lepper, Philippe, Metz, Carlos, Viderman, Dmitriy, Umbetzhanov, Yerlan, Mugazov, Miras, Bazhykayeva, Yelena, Kaligozhin, Zhannur, Babashev, Baurzhan, Merenkov, Yevgeniy, Temirov, Talgat, Arvaniti, Kostoula, Smyrniotis, Dimitrios, Psallida, Vasiliki, Fildisis, Georgios, Soulountsi, Vasiliki, Kaimakamis, Evangelos, Iasonidou, Cristina, Papoti, Sofia, Renta, Foteini, Vasileiou, Maria, Romanou, Vasiliki, Koutsoukou, Vasiliki, Kristina Matei, Mariana, Moldovan, Leora, Karaiskos, Ilias, Paskalis, Harry, Marmanidou, Kyriaki, Papanikolaou, M., Kampolis, C., Oikonomou, Marina, Kogkopoulos, Evangelos, Nikolaou, Charikleia, Sakkalis, Anastasios, Chatzis, Marinos, Georgopoulou, Maria, Efthymiou, Anna, Chantziara, Vasiliki, Sakagianni, Aikaterini, Athanasa (Athanassa), Zoi (Zoe), Papageorgiou, Eirini, Ali, Fadi, Dimopoulos, Georges, Panagiota Almiroudi, Mariota, Malliotakis, Polychronis, Marouli, Diamantina, Theodorou, Vasiliki, Retselas, Ioannis, Kouroulas, Vasilios, Papathanakos, Georgios, Bassetti, Matteo, Giacobbe, Daniele, Montrucchio, Giorgia, Sales, Gabriele, De Pascale, Gennaro, Maria Montini, Luca, Carelli, Simone, Vargas, Joel, Di Gravio, Valentina, Roberto Giacobbe, Daniele, Gratarola, Angelo, Porcile, Elisa, Mirabella, Michele, Daroui, Ivan, Lodi, Giovanni, Zuccaro, Francesco, Grazia Schlevenin, Maria, Pelosi, Paolo, Battaglini, Denise, Cortegiani, Andrea, Ippolito, Mariachiara, Bellina, Davide, Di Guardo, Andrea, Pelagalli, Lorella, Covotta, Marco, Rocco, Monica, Fiorelli, Silvia, Cotoia, Antonella, Chiara Rizzo, Anna, Adam Mikstacki, Mikstacki, Adam, Tamowicz, Barbara, Kaptur Komorowska, Irmina, Szczesniak, Anna, Bojko, Jozef, Kotkowska, Anna, Walczak-Wieteska, Paulina, Wasowska, Dominika, Nowakowski, Tomasz, Broda, Hanna, Mariusz Peichota, Assoc, Pietraszek-Grzywaczewska, Iwona, Martin-Loeches, Ignacio, Bisanti, Alessandra, Paiva, José Artur, Póvoa, Pedro, Cartoze, Nuno, Pereira, Tiago, Guimarães, Nádia, Alves, Madalena, Josefina Pinheiro Marques, Ana, Rios Pinto, Ana, Krystopchuk, Andriy, Teresa, Ana, Manuel Pereira de Figueiredo, António, Botelho, Isabel, Duarte, Tiago, Costa, Vasco, Pedro Cunha, Rui, Molinos, Elena, Tito da Costa, Ledo, Sara, Queiró, Joana, Pascoalinho, Dulce, Nunes, Cristina, Pedro Moura, José, Pereira, Énio, Carvalho Mendes, António, Valeanu, Liana, Bubenek-Turconi, Serban, Marina Grintescu, Ioana, Cobilinschi, Cristian, Carmen Filipescu, Daniela, Elena Predoi, Cornelia, Tomescu, Dana, Popescu, Mihai, Marcu, Alexandra, Grigoras, Ioana, Lungu, Olguta, Gritsan, Alexey, Anderzhanova, Anastasia, Meleshkina, Yulia, Magomedov, Marat, Zubareva, Nadezhda, Tribulev, Maksim, Gaigolnik, Denis, Eremenko, Aleksandr, Vistovskaya, Natala, Chukina, Maria, Belskiy, Vladislav, Furman, Mikhail, Ferrer Rocca, Ricard, Martinez, Maria, Casares, Vanessa, Mellado Artigas, Ricard, Vera, Paula, Flores, Matias, Amador Amerigo, Joaquin, Gracia Arnillas, Maria Pilar, Munoz Bermudez, Rosana, Armestar, Fernando, Catalan, Beatriz, Roig, Regina, Raguer, Laura, Dolores Quesada, María, Diaz Santos, Emilio, Gomà, Gemma, Ubeda, Alejandro, Salgado, Maria, Forcelledo Espina, Lorena, Garcia Prieto, Emilio, Asensio, Mj, Rodriguez, M., Maseda, Dr Emilio, Suarez De La Rica, Alejandro, Ignacio Ayestaran, J., Novo, Mariana, Blasco-Navalpotro, Miguel Angel, Orejas Gallego, Alberto, Sjovall, Fredrik, Sjövall, Fredrik, Spahic, Dzana, Johan Svensson, Carl, Haney, Michael, Edin, Alicia, Åkerlund, Joyce, De Geer, Lina, Prazak, Josef, Buetti, Niccolò, Jakob, Stephan, Pagani, Jl, Abed-Maillard, S., Akova, Murat, Aslan, Abdullah Tarık, Aslan, Abdullah Tarik, Timuroglu, Arif, Kocagoz, Sesin, Kusoglu, Hulya, Mehtap, Selcuk, Ceyhun, Solakoğlu, Altintas, Dr. Neriman Defne, Talan, Leyla, Kayaaslan, Bircan, Kaya Kalem, Ayşe, Kurt, Dr. Ibrahim, Telli, Murat, Ozturk, Barcin, Erol, Çiğdem, Dindar Demiray, Emine Kubra, Çolak, Sait, Akbas, Türkay, Dr. Kursat Gundogan, Sari, Ali, Agalar, Canan, Çolak, Onur, Baykam, Nurcan (N), Akdogan, Ozlem (O), Yilmaz, Mesut, Tunay, Burcu, Cakmak, Rumeysa, Saltoglu, Nese, Karaali, Ridvan, Iftihar Koksal, Firdevs Aksoy, Eroglu, Ahmet, Tolga Saracoglu, Kemal, Bilir, Yeliz, Guzeldag, Seda, Ersoz, Gulden, Evik, Guliz, Sungurtekin, Hulya, Ozgen, Cansu, Erdoğan, Cem, Gürbüz, Yunus, Altin, Nilgün, Bayindir, Yasar, Ersoy, Yasemin, Goksu, Senay, Akyol, Ahmet, Dr, Kartal, Batirel, Ayse, Cagan Aktas, Sabahat, Morris, Andrew Conway, Conway Morris, Andrew, Routledge, Matthew, Ercole, Ari, Antcliffe, David, Rojo, Roceld, Tizard, Kate, Faulkner, Maria, Cowton, Amanda, Kent, Melanie, Raj, Ashok, Zormpa, Artemis, Tinaslanidis, George, Khade, Reena, Torlinski, Tomasz, Mulhi, Randeep, Goyal, Shraddha, Bajaj, Manan, Soltan, Marina, Yonan, Aimee, Dolan, Rachael, Johnson, Aimee, Macfie, Caroline, Lennard, James, Templeton, Maie, Sousa Arias, Sonia, Franke, Uwe, Hugill, Keith, Angell, Hollie, Benjamin J Parcell, Cobb, Katherine, Cole, Stephen, Smith, Tim, Graham, Clive, Cerman, Jaroslav, Keegan, Allison, Ritzema, Jenny, Sanderson, Amanda, Roshdy, Ashraf, Szakmany, Tamas, Baumer, Tom, Longbottom, Rebecca, Hall, Daniel, Tatham, Kate, Loftus, S., Husain, A., Black, E., Jhanji, S., Rao Baikady, R., Mcguigan, Peter, Mckee, Rachel, Kannan, Santhana, Antrolikar, Supriya, Marsden, Nicholas, Della Torre, Valentina, Banach, Dorota, Zaki, Ahmed, Jackson, Matthew, Chikungwa, Moses, Attwood, Ben, Patel, Jamie, Rebecca E Tilley, Humphreys, Sally K., Jean Renaud, Paul, Sokhan, Anton, Burma, Yaroslava, Sligl, Wendy, Baig, Nadia, McCoshen, Lorena, Kutsogiannis, Demetrios J., Thompson, Patricia, Hewer, Tayne, Rabbani, Raihan, Huq, Shihan Mahmud Redwanul, Hasan, Rajib, Motiul Islam, Mohammad, Gurjar, Mohan, Baronia, Arvind, Kothari, Nikhil, Sharma, Ankur, Karmakar, Saurabh, Sharma, Priya, Nimbolkar, Janardan, Samdani, Pratit, Vaidyanathan, R., Ahmedi Rubina, Noor, Jain, Nikhilesh, Pahuja, Madhumati, Singh, Ritu, Shekhar, Saurav, Syed, Nabeel Muzaffar, Ozair, Ahmad, Sarwar Siddiqui, Suhail, Bose, Payel, Datta, Avijatri, Rathod, Darshana, Patel, Mayur, MK, Renuka, Sailaja, K Baby, Dsilva, Carol, Chandran, Jagadish, Ghosh, Pralay, Mukherjee, Sudipta, Sheshala, Kaladhar, Chandra Misra, Krushna, Adekola, Oyebola O., Yusuf Yakubu, Saidu, Mgbosoro Ugwu, Euphemia, Olatosi, John (O), Desalu, Ibironke, Asiyanbi, Gabriel, Oladimeji, Motunrayo, Idowu, Olusola, Adeola, Fowotade, Mer, Mervyn, Mc Cree, Melanie, El Sanousi, Dr. Bashir, Adil Ali Karar, Ali, Saidahmed, Elfayadh, Hamid, Hytham K.S., Loiodice, Ambre, Bailly, Sébastien, Ruckly, Stéphane, and Staiquly, Quentin

Published
2024
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10. Recent advancements in critical care: Part I

Author

Gopal, Palepu B., Karim, Habib Md Reazaul, Karthekeyan, Ranjit, Raphael, Paul Ovungal, Tiwaskar, Shilpa, and Vaidyanathan, R

Subjects
Strategic planning (Business), Ultrasound imaging, Medical colleges, Methicillin
Abstract

ABSTRACT Medical colleges are now developing or refurbishing their anaesthesia intensive care units. In most teaching colleges, the residency post includes working in the critical care unit (CCU). Critical care is a rapidly evolving and popular super-speciality for postgraduate students. In some hospitals, anaesthesiologists play a key role in the management of the CCU. As perioperative physicians, all anaesthesiologists should be aware of the recent advancements in diagnostic and monitoring gadgets and investigations in critical care so that they may manage perioperative events effectively. Haemodynamic monitoring gives us warning signs about the change in the internal milieu of the patient. Point-of-care ultrasonography helps in rapid differential diagnosis. Point-of-care diagnostics give us instant bed-side information on the condition of a patient. Biomarkers help in confirming diagnosis, in monitoring, treatment, and providing prognosis. Molecular diagnostics guide anaesthesiologists in providing specific treatment to a causative agent. This article touches upon all of these management strategies in critical care and attempts to put forth the recent advancements in this speciality. Keywords: Biomarkers, Doppler ultrasonography, molecular sequence annotation, perfusion imaging, point-of-care testing, Author(s): Palepu B. Gopal (corresponding author) [1]; Habib Md Reazaul Karim [2]; Ranjit Karthekeyan [3]; Paul Ovungal Raphael [4]; Shilpa Tiwaskar [5]; R Vaidyanathan [6] INTRODUCTION Patients requiring critical care [...]

Published
2023
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11. Design and Reliability Study on Fixture for Normal and Underwater Friction Stir Welding

Author

Muthu Vaidyanathan, R., Woldegioris, Mebratu Markos, Sivaraman, N., Patel, Mahaboob, Atiso, Tsegaye Alemayehu, Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, di Mare, Francesca, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, Chaurasiya, Prem Kumar, editor, Singh, Abhishek, editor, Verma, Tikendra Nath, editor, and Rajak, Upendra, editor

Published
2022
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14. Seeing the Elephant: A Systematic Scoping Review and Comparison of Patient-Centeredness Conceptualizations from Three Seminal Perspectives

Author

Olson AW, Stratton TP, Isetts BJ, Vaidyanathan R, Van Hooser JC, and Schommer JC

Subjects
patient-centeredness, medicine, nursing, health policy, pharmacy, systematic scoping review, Medicine (General), R5-920
Abstract

Anthony W Olson,1,2 Timothy P Stratton,2 Brian J Isetts,3 Rajiv Vaidyanathan,4 Jared C Van Hooser,2 Jon C Schommer3 1Research Division, Essentia Institute of Rural Health, Duluth, MN, USA; 2Department of Pharmacy Practice and Pharmaceutical Sciences, University of Minnesota – College of Pharmacy, Duluth, MN, USA; 3Department of Pharmaceutical Care and Health Systems, University of Minnesota – College of Pharmacy, Minneapolis, MN, USA; 4Department of Marketing, University of Minnesota Duluth – Labovitz School of Business and Economics, Duluth, MN, USACorrespondence: Anthony W Olson 502 E 2nd Street, Duluth, MN, 55805, USATel +1 218 786 1754Fax +1 218 786 8159Email anthony.olson@essentiahealth.orgAbstract: “Patient-Centeredness” (PC) is a theoretical construct made up of a diverse constellation of distinct concepts, processes, practices, and outcomes that have been developed, arranged, and prioritized heterogeneously by different communities of professional healthcare practice, research, and policy. It is bound together by a common ethos that puts the holistic individual at the functional and symbolic center of their care, a quality deemed essential for chronic disease management and health promotion. Several important contributions to the PC research space have adeptly integrated seminal PC conceptualizations to improve conceptual clarity, measurement, implementation, and evaluation in research and practice. This systematic scoping review builds on that work, but with a purpose to explicitly identify, compare, and contrast the seminal PC conceptualizations arising from the different healthcare professional groups. The rationale for this work is that a deeper examination of the underlying development and corresponding assumptions from each respective conceptualization will lead to a more informed understanding of and meaningful contributions to PC research and practice, especially for healthcare professional groups newer to the topic area like pharmacy. The literature search identified four seminal conceptualizations from the healthcare professions of Medicine, Nursing, and Health Policy. A compositional comparison across the seminal conceptualizations revealed a shared ethos but also six distinguishing features: (1) organizational structure; (2) predominant level of care; (3) methodological approach; (4) care setting origin; (5) outcomes of interest; and (6) language. The findings illuminate PC’s stable theoretical foundations and distinctive nuances needed to appropriately understand, apply, and evaluate the construct’s operationalization in contemporary healthcare research and practice. These considerations hold important implications for future research into the fundamental aims of healthcare, how it should look when practiced, and what should reasonably be required of it.Keywords: patient-centeredness, medicine, nursing, health policy, pharmacy, systematic scoping review

Published
2021

22. Discovering behavioural patterns using conversational technology for in-home health and well-being monitoring

Author

Raposo de Lima, M, Vaidyanathan, R, and Barnaghi, P

Abstract

Advancements in conversational AI have created unparalleled opportunities to promote the independence and well-being of older adults, including people living with dementia (PLWD). However, conversational agents have yet to demonstrate a direct impact in supporting target populations at home, particularly with long-term user benefits and clinical utility. We introduce an infrastructure fusing in-home activity data captured by Internet of Things (IoT) technologies with voice interactions using conversational technology (Amazon Alexa). We collect 3103 person-days of voice and environmental data across 14 households with PLWD to identify behavioural patterns. Interactions include an automated well-being questionnaire and 10 topics of interest, identified using topic modelling. Although a significant decrease in conversational technology usage was observed after the novelty phase across the cohort, steady state data acquisition for modelling was sustained. We analyse household activity sequences preceding or following Alexa interactions through pairwise similarity and clustering methods. Our analysis demonstrates the capability to identify individual behavioural patterns, changes in those patterns and the corresponding time periods. We further report that households with PLWD continued using Alexa following clinical events (e.g., hospitalisations), which offers a compelling opportunity for proactive health and well-being data gathering related to medical changes. Results demonstrate the promise of conversational AI in digital health monitoring for ageing and dementia support and offer a basis for tracking health and deterioration as indicated by household activity, which can inform healthcare professionals and relevant stakeholders for timely interventions. Future work will use the bespoke behavioural patterns extracted to create more personalised AI conversations.

Published
2023

23. The role of conversational AI in ageing and dementia care at home: a participatory study

Author

Raposo de Lima, M, Horrocks, S, Daniels, S, Lamptey, M, Harrison, M, and Vaidyanathan, R

Abstract

Conversational artificial intelligence (AI) technologies hold significant promise to support the independence, well-being and safety of older adults living with frailty or dementia at home. However, further studies are needed to identify: 1) valuable scenarios of support, 2) desired interactive features, and 3) key challenges preventing long-term adoption and utility in dementia care. In this paper, we explore the role of conversational technology in ageing and dementia care at home. Using a community-based participatory approach, we engaged 20 stakeholders, including people with lived experience of dementia and frailty, to understand preferences, perceived benefits and concerns about integrating conversational AI into daily routines at home. We uncovered key roles of the technology, including support of daily functions, health monitoring, risk mitigation, and cognitive stimulation. We emphasize the need for adapting interactions to different levels of user familiarity and progression of cognitive decline. We address the importance of the communication style and suggest careful use of open-ended questions with target populations. We further discuss feasibility considerations to overcome current barriers to adoption. Overall, this work proposes design guidelines to shape the future conceptualization and development of natural language interactions to support dementia care at home.

Published
2023

27. Epidemiology and outcomes of hospital-acquired bloodstream infections in intensive care unit patients: the EUROBACT-2 international cohort study

Author

Rashidi, Mahboobeh, Hamid, Hytham K S, Saidahmed, Elfayadh, Karar, Ali Adil Ali, Mc Cree, Melanie, Adeola, Fowotade, Idowu, Olusola, Oladimeji, Motunrayo, Asiyanbi, Gabriel, Desalu, Ibironke, Olatosi, John O, Ugwu, Euphemia Mgbosoro, Yakubu, Saidu Yusuf, Misra, Krushna Chandra, Sheshala, Kaladhar, Mukherjee, Sudipta, Ghosh, Pralay, Chandran, Jagadish, Dsilva, Carol, Baby, Sailaja K, Renuka, M K, Patel, Mayur, Rathod, Darshana, Datta, Avijatri, Bose, Payel, Siddiqui, Suhail Sarwar, Ozair, Ahmad, Muzaffar, Syed Nabeel, Shekhar, Saurav, Singh, Ritu, Pahuja, Madhumati, Jain, Nikhilesh, Rubina, Noor Ahmedi, Vaidyanathan, R, Samdani, Pratit, Nimbolkar, Janardan, Sharma, Priya, Karmakar, Saurabh, Sharma, Ankur, Kothari, Nikhil, Baronia, Arvind, Gurjar, Mohan, Islam, Mohammad Motiul, Hasan, Rajib, Huq, Shihan Mahmud Redwanul, Rabbani, Raihan, Hewer, Tayne, Thompson, Patricia, Sligl, Wendy, Kutsogiannis, Demetrios J, McCoshen, Lorena, Baig, Nadia, Burma, Yaroslava, Sokhan, Anton, Renaud, Paul Jean, Humphreys, Miss Sally K, Tilley, Rebecca E, Patel, Jamie, Attwood, Ben, Chikungwa, Moses, Jackson, Matthew, Zaki, Ahmed, Banach, Dorota, Torre, Valentina Della, Marsden, Nicholas, Antrolikar, Supriya, Kannan, Santhana, Mckee, Rachel, Mcguigan, Peter, Baikady, R Rao, Jhanji, S, Black, E, Husain, A, Loftus, S, Tatham, Kate, Hall, Daniel, Longbottom, Rebecca, Baumer, Tom, Szakmany, Tamas, Roshdy, Ashraf, Sanderson, Amanda, Ritzema, Jenny, Keegan, Allison, Cerman, Jaroslav, Graham, Clive, Smith, Tim, Cole, Stephen, Cobb, Katherine, Parcell, Benjamin J, Angell, Hollie, Hugill, Keith, Franke, Uwe, Arias, Sonia Sousa, Templeton, Maie, Lennard, James, Macfie, Caroline, Johnson, Aimee, Dolan, Rachael, Yonan, Aimee, Soltan, Marina, Bajaj, Manan, Goyal, Shraddha, Mulhi, Randeep, Torlinski, Tomasz, Khade, Reena, Tinaslanidis, George, Zormpa, Artemis, Raj, Ashok, Kent, Melanie, Cowton, Amanda, Faulkner, Maria, Tizard, Kate, Rojo, Roceld, Antcliffe, David, Ercole, Ari, Morris, Andrew Conway, Routledge, Matthew, Aktas, Sabahat Cagan, Batirel, Ayse, Akyol, Ahmet, Goksu, Senay, Ersoy, Yasemin, Bayindir, Yasar, Altin, Nilgün, Gürbüz, Yunus, Erdoğan, Cem, Ozgen, Cansu, Sungurtekin, Hulya, Evik, Guliz, Ersoz, Gulden, Guzeldag, Seda, Bilir, Yeliz, Saracoglu, Kemal Tolga, Eroglu, Ahmet, Aksoy, Firdevs, Koksal, Iftihar, Karaali, Ridvan, Saltoglu, Nese, Cakmak, Rumeysa, Tunay, Burcu, Yilmaz, Mesut, Akdogan, Ozlem O, Baykam, Nurcan N, Çolak, Onur, Agalar, Canan, Sari, Ali, Gundogan, KÜRŞAT, Akbas, Türkay, Çolak, Sait, Demiray, Emine Kubra Dindar, Erol, Çiğdem, Ozturk, Barcin, Telli, Murat, Kurt, Ibrahim, Kalem, Ayşe Kaya, Kayaaslan, Bircan, Talan, Leyla, Altintas, Neriman Defne, Ceyhun, Solakoğlu, Mehtap, Selcuk, Kusoglu, Hulya, Kocagoz, Sesin, Timuroglu, Arif, Aslan, Abdullah Tarik, Akova, Murat, Abed-Maillard, S, Pagani, Jl, Jakob, Stephan, Prazak, Josef, De Geer, Lina, Åkerlund, Joyce, Edin, Alicia, Haney, Michael, Svensson, Carl Johan, Spahic, Dzana, Sjövall, Fredrik, Gallego, Alberto Orejas, Blasco-Navalpotro, Miguel Angel, Novo, Mariana, Ayestaran, J Ignacio, De La Rica, Alejandro Suarez, Maseda, Emilio, Rodriguez, Dra M, Asensio, Dra Mj, Prieto, Emilio Garcia, Espina, Lorena Forcelledo, Salgado, Dra Maria, Ubeda, Alejandro, Gomà, Gemma, Santos, Emilio Diaz, Quesada, María Dolores, Raguer, Laura, Roig, Regina, Catalan, Beatriz, Armestar, Fernando, Bermudez, Rosana Munoz, Arnillas, Maria Pilar Gracia, Amerigo, Joaquin Amador, Flores, Matias, Vera, Paula, Casares, Vanessa, Martinez, Maria, Rocca, Ricard Ferrer, Furman, Mikhail, Belskiy, Vladislav, Chukina, Maria, Vistovskaya, Natala, Eremenko, Aleksandr, Gaigolnik, Denis, Tribulev, Maksim, Zubareva, Nadezhda, Magomedov, Marat, Meleshkina, Yulia, Anderzhanova, Anastasia, Gritsan, Alexey, Lungu, Olguta, Grigoras, Ioana, Marcu, Alexandra, Popescu, Mihai, Tomescu, Dana, Predoi, Cornelia Elena, Filipescu, Daniela Carmen, Cobilinschi, Cristian, Grintescu, Ioana Marina, Bubenek-Turconi, Serban, Valeanu, Liana, Mendes, António Carvalho, Pereira, Énio, Moura, José Pedro, Nunes, Cristina, Pascoalinho, Dulce, Queiró, Joana, Ledo, Sara, da Costa, Tito, Molinos, Elena, Cunha, Rui Pedro, Costa, Vasco, Duarte, Tiago, Botelho, Isabel, de Figueiredo, António Manuel Pereira, Teresa, Ana, Krystopchuk, Andriy, Pinto, Ana Rios, Marques, Ana Josefina Pinheiro, Alves, Madalena, Guimarães, Nádia, Pereira, Tiago, Cartoze, Nuno, Bisanti, Alessandra, Martin-Loeches, Ignacio, Pietraszek-Grzywaczewska, Iwona, Peichota, Mariusz, Broda, Hanna, Nowakowski, Tomasz, Wasowska, Dominika, Walczak-Wieteska, Paulina, Kotkowska, Anna, Bojko, Jozef, Szczesniak, Anna, Komorowska, Irmina Kaptur, Tamowicz, Barbara, Mikstacki, Adam, Rizzo, Anna Chiara, Cotoia, Antonella, Fiorelli, Silvia, Rocco, Monica, Covotta, Marco, Pelagalli, Lorella, Di Guardo, Andrea, Bellina, Davide, Ippolito, Mariachiara, Cortegiani, Andrea, Battaglini, Denise, Pelosi, Paolo, Schlevenin, Maria Grazia, Zuccaro, Francesco, Lodi, Giovanni, Daroui, Ivan, Mirabella, Michele, Porcile, Elisa, Gratarola, Angelo, Giacobbe, Daniele Roberto, Di Gravio, Valentina, Vargas, Joel, Carelli, Simone, Montini, Luca Maria, De Pascale, Gennaro, Sales, Gabriele, Montrucchio, Giorgia, Papathanakos, Georgios, Kouroulas, Vasilios, Retselas, Ioannis, Theodorou, Vasiliki, Marouli, Diamantina, Malliotakis, Polychronis, Almiroudi, Mariota Panagiota, Dimopoulos, Georges, Ali, Fadi, Papageorgiou, Eirini, Athanasa, Zoi, Sakagianni, Aikaterini, Chantziara, Vasiliki, Efthymiou, Anna, Georgopoulou, Maria, Chatzis, Marinos, Sakkalis, Anastasios, Nikolaou, Charikleia, Kogkopoulos, Evangelos, Oikonomou, Marina, Kampolis, C, Papanikolaou, M, Marmanidou, Kyriaki, Paskalis, Harry, Karaiskos, Ilias, Moldovan, Leora, Matei, Mariana Kristina, Koutsoukou, Vasiliki, Romanou, Vasiliki, Vasileiou, Maria, Renta, Foteini, Papoti, Sofia, Iasonidou, Cristina, Kaimakamis, Evangelos, Soulountsi, Vasiliki, Fildisis, Georgios, Psallida, Vasiliki, Smyrniotis, Dimitrios, Arvaniti, Kostoula, Temirov, Talgat, Merenkov, Yevgeniy, Babashev, Baurzhan, Kaligozhin, Zhannur, Bazhykayeva, Yelena, Mugazov, Miras, Ymbetzhanov, Yerlan, Viderman, Dmitriy, Metz, Carlos, Lepper, Philippe, Wempe, Carola, Gottschalk, Antje, Schmidt, Karsten, Dubler, Simon, Pasieka, Bastian, Petros, Sirak, Thomas-Rueddel, Daniel, Bloos, Frank, Hoheisen, Sandra, Bracht, Hendrik, Klouche, Kada, Imzi, Nadia, Dahyot-Fizelier, Claire, Fartoukh, Muriel, Voiriot, Guillaume, Aparicio, Christelle, Siami, Shidasp, Le Guennec, Loïc, Demeret, Sophie, Silva, Stein, Sarton, Benjamine, Roger, Claire, Lefrant, Jean-Yves, Larcher, Romaric, Badre, Gaëtan, Kalfon, Pierre, Razazi, Keyvan, Dessap, Armand Mekonted, Baudry, Thomas, Argaud, Laurent, Smonig, Roland, Louis, Guillaume, Bourenne, Jérémy, Gainnier, Marc, Barbier, François, Djanikian, Flora, Perrigault, Pierre-François, Foucrier, Arnaud, Janny, Sylvie, Weiss, Emmanuel, Bruel, Cédric, Tran, Marc, Philippart, François, Paulet, Rémi, Thyrault, Martial, Duprey, Matthieu, Garcon, Pierre, Mira, Jean-Paul, Le Souhaitier, Mathieu, Bortolotti, Perrine, Kipnis, Eric, Duburcq, Thibault, Coupez, Elisabeth, Souweine, Bertrand, Nica, Alexandru, Alfandari, Serge, Leroy, Olivier, Rosman, Jérémy, Mateu, Philippe, Escudier, Etienne, Guesdon, Charlotte, Massri, Alexandre, Beuzelin, M, Marchalot, A, Le Meur, Anthony, Auchabie, Johann, Castanera, Jérémy, Dulac, Thierry, Montravers, P, Zappela, N, Patrier, Juliette, Timsit, Jean-François, Arbelot, Charlotte, Leone, Marc, Lasic, Hrvoje, Nikolic, Mario, Sakan, Sanja, Persec, Jasminka, Brajkovic, Ana Vujaklija, Radonic, Radovan, Filipovic-Grcic, Ina, Custovic, Aida, Zlojutro, Biljana, Kovacevic, Pedja, Opdenacker, Godelive, De Waele, Elisabeth, Wittebole, Xavier, Serck, Nicolas, De Schryver, Nicolas, Misset, Benoît, Layos, Nathalie, Noel, Cindérella, Biston, Patrick, Haentjens, Lionel, Henin, Pierre, Mesland, Jean-Baptiste, Vanderhaeghen, Sofie F M, Bourgeois, Marc, Denys, Wouter, Hollevoet, Isabelle, De Waele, Jan, De Bus, Liesbet, Tomas, Ernesto Deloya, Perez-Nieto, Orlando R, Tejeda-Huezo, Brigitte, Sánchez-Hurtado, Luis, Ñamendys-Silva, Silvio A, Davalos-Alvarez, Adrian, Dominguez-Cherit, Jose G, Lomeli-Teran, Manuel, Villafuerte, Missael Vladimir Espinoza, Herrera, Mara Ocotlan Gonzalez, Aguilar, Candy Garcia, Leal, Jesús Nicolás Pantoja, Castillo, Roberto Alejandro, Hermosillo, Mariana, Romero-Gonzalez, Juan P, Reyes, Luis Felipe, Montefiore, Pablo, Nuccetelli, Yanina, Alonzo, Microbiologa Irene, Aparicio, Dra Marta, Segura, Matías, Fernández, Rubén, Lopez, Patricia Mabel, Acevedo, José Oscar, Morvillo, Lic Natalia, Centeno, Pablo, Sellami, Walid, Turki, Olfa, Bouaziz, Mounir, Bakr, Lubna, Al-Jadaan, Mohammad, Abu-Sayf, Natalia, Chaaban, Mohammad Karam, Aljabbary, Ahmed, Awad, Maher, Almekhlafi, Ghaleb A, Elrabi, Omar, Sallam, Hend, Nissar, Shaikh, Lance, Marcus, Karic, Edin, Elbuzidi, Abdurahaman, Hssain, Ali Ait, Jayyab, Mustafa Abu, Amro, Sarah, Belkhadir, Z, Ghannam, A, Hachimi, Abdelhamid, Younes, Oujidi, Housni, Brahim, Zeggwagh, Amine Ali, Dendane, Tarek, Wajdi, Maazouzi Ahmed, Mouhssine, Doumiri, Kanjaa, Nabil, Boukatta, Brahim, Seddiki, Rachid, Serghini, Issam, Hasan, Rabab Shaban Ben, Hasan, Hayat Ben, Jobran, Rania, Hdada, Aisha Khaled, Abousnina, Fathi A, Abdulwahed, Eman, Taher, Ahmed Sa, Bouhuwaish, Ahmad, Bilkhayr, Hala, Almiqlash, Bushray, Homaidan, Ahmed Gaber Sadik, AliAli, Almajdoub Mohammed, Aqeelah, Ahmed, Gamra, Marwa, Buimsaedah, Ahmad, Fares, Aya, Ibrahim, Rebecca, Abilama, Fayez, Diab, Adei, Harara, Belal, Levin, Phillip, Belman, Daniel, Rigler, Merav, Kagan, Ilya, Singer, Pierre, Ahmed, Abdullah Khudhur, Tabatabaei, Seyed Mohammad Nasirodin, Tajvidi, Ramin, Masjedi, Mansoor, Sarshad, Hakimeh, Sabetian, Golnar, Dabiri, Gholamreza, Aalinezhad, Fatemeh, Mahmoodpoor, Ata, Zargar, Mohammad Amin, Kiani, Arash, Amiri, Fereshteh, Javaherforoosh, Fatemeh, Baghbanian, Reza, Soltani, Farhad, Savaie, Mohsen, Ahmadi, Fatemeh, Kashipazha, Davood, Mehraban, Zahra, Borsi, Seyed Hamid, Ouhadian, Maryam, Zand, Farid, Hemead, Hanan M, Awad, Ahmed K, Elbadawy, Merihan A, Elsayed, Ahmed, Elmandouh, Omar, Aldhalia, Amer, Saber, Ahmed, Elbahnasawy, Mohamed, Mostafa, Tarek, Osman, Nermin, Barsoum, Mina, Elhadidy, Amr, Alsisi, Adel, Houfi, Ashraf El, Nadeem, Rashid, Chiewroongroj, Supattra, Apichatbutr, Yutthana, Wongsurakiat, Phunsup, Ku, Shih-Chi, Kuo, Li-Kuo, Hu, Ting-Yu, Cia, Cong-Tat, Chou, Nai-Kuan, Yeh, Yu Chang, Ng, Louis Xiang Long, Ng, Kangqi, Quah, Jessica Lishan, Lim, Jia Yan, Ong, Caroline Yu Ming, Li, Andrew Yunkai, Goh, Ken Junyang, Kwa, Andrea Lay Hoon, Lie, Sui An, Ng, Shin Yi, Goh, Qing Yuan, Lim, Sung Yoon, Park, Seung Yong, Park, Sunghoon, Lee, Sang-Min, Jeon, Kyeongman, Ali, Saedah, Mazlan, Mohd Zulfakar, Azman, Abd Hamid, Tong, Lee Kok, Noor, Zuraini Md, Rahman, Hamizah Bt Abdul, Fong, Kean Khang, Wong, Siong Ling Danny, Liew, Mun Thing, Visvalingam, Sheshendrasurian, Pheng, Lee See, Jamaluddin, Muhamad Fadhil Hadi, Hasan, M Shahnaz, Takaki, Shunsuke, Kato, Hideaki, Atobe, Kaori, Saito, Hiroki, Rinka, Hiroshi, Omori, Koichiro, Fujitani, Shigeki, Yoshida, Hideki, Nagashima, Michio, Mishima, Yuka, Shigemitsu, Hidenobu, Kuriyama, Akira, Matsuyoshi, Takeo, Makino, Jun, Hosokawa, Koji, Hashimoto, Satoru, Yamasaki, Masaki, Karumai, Toshiyuki, Hayashi, Yoshiro, Geng, Nan, Peije, Li, Weifeng, Xie, Ye, Ling, Qin, Bingyu, Wang, Yan, Yan, Jing, Huang, Min, Zhou, Suming, Hu, Chungfang, Ye, Jilu, Zhang, Min, Yin, Yongjie, Wang, Jinfeng, Wang, Ruilan, Yin, Chengfen, Xu, Lei, Mingmin, Chen, Wusi, Qiu, Zhao, Juan, Zhao, Peng, Wang, Hao, Chen, Xiaomei, Luo, Jili, Qian, Chuanyun, Zhen, Wang, Wei-Hua, Lu, Jianfeng, Xie, Haibo, Qiu, Sridharan, Dhadappa Damodar, Sudhirchandra, Shah, Moorthi, P Dhakshina, Mon, Tomas, Walid, Haji Adi Muhamad Ibnu, Tabah, Alexis, Buetti, Niccolò, Staiquly, Quentin, Ruckly, Stéphane, Conway Morris, Andrew, Bassetti, Matteo, Lipman, Jeffrey, Ferrer, Ricard, Qiu, Haibo, Paiva, José-Artur, Povoa, Pedro, Abidi, Khalid, Elhadi, Muhammed, Pollock, Hamish, Margetts, Ben, Young, Meredith, Bhadange, Neeraj, Tyler, Steven, Ledtischke, Anne, Finnis, Mackenzie, Dwivedi, Jyotsna, Saxena, Manoj, Biradar, Vishwanath, Soar, Natalie, Sarode, Vineet, Brewster, David, Regli, Adrian, Weeda, Elizabeth, Ahmed, Samiul, Fourie, Cheryl, Laupland, Kevin, Ramanan, Mahesh, Walsham, James, Meyer, Jason, Litton, Edward, Palermo, Anna Maria, Yap, Timothy, Eroglu, Ege, Attokaran, Antony George, Jaramillo, C'havala, Nafees, Khalid Mahmood Khan, Rashid, Nurhikmahtul Aqilah Haji Abd, Tabah, Alexi, Buetti, Niccolò, Staiquly, Quentin, Ruckly, Stéphane, Akova, Murat, Aslan, Abdullah Tarik, Leone, Marc, Conway Morris, Andrew, Bassetti, Matteo, Arvaniti, Kostoula, Lipman, Jeffrey, Ferrer, Ricard, Qiu, Haibo, Paiva, José-Artur, Povoa, Pedro, De Bus, Liesbet, De Waele, Jan, Zand, Farid, Gurjar, Mohan, Alsisi, Adel, Abidi, Khalid, Bracht, Hendrik, Hayashi, Yoshiro, Jeon, Kyeongman, Elhadi, Muhammed, Barbier, Françoi, Timsit, Jean-Françoi, EUROBACT-2 Study Group, ESICM, ESCMID ESGCIP and the OUTCOMEREA Network including, Andrea Cortegiani, and Mariachiara Ippolito

Subjects
antibiotic resistance, bloodstream infection, hospital-acquired, bacteremia, Critical Care and Intensive Care Medicine
Abstract

Purpose: In the critically ill, hospital-acquired bloodstream infections (HA-BSI) are associated with significant mortality. Granular data are required for optimizing management, and developing guidelines and clinical trials. Methods: We carried out a prospective international cohort study of adult patients (≥ 18years of age) with HA-BSI treated in intensive care units (ICUs) between June 2019 and February 2021. Results: 2600 patients from 333 ICUs in 52 countries were included. 78% HA-BSI were ICU-acquired. Median Sequential Organ Failure Assessment (SOFA) score was 8 [IQR 5; 11] at HA-BSI diagnosis. Most frequent sources of infection included pneumonia (26.7%) and intravascular catheters (26.4%). Most frequent pathogens were Gram-negative bacteria (59.0%), predominantly Klebsiella spp. (27.9%), Acinetobacter spp. (20.3%), Escherichia coli (15.8%), and Pseudomonas spp. (14.3%). Carbapenem resistance was present in 37.8%, 84.6%, 7.4%, and 33.2%, respectively. Difficult-to-treat resistance (DTR) waspresent in 23.5% and pan-drug resistance in 1.5%. Antimicrobial therapy was deemed adequate within 24h for 51.5%. Antimicrobial resistance was associated with longer delays to adequate antimicrobial therapy. Source control was needed in 52.5% but not achieved in 18.2%. Mortality was 37.1%, and only 16.1% had been discharged alivefrom hospital by day-28. Conclusions: HA-BSI was frequently caused by Gram-negative, carbapenem-resistant and DTR pathogens. Antimicrobial resistance led to delays in adequate antimicrobial therapy. Mortality was high, and at day-28 only a minority of the patients were discharged alive from the hospital. Prevention of antimicrobial resistance and focusing on adequate antimicrobial therapy and source control are important to optimize patient management and outcomes.

Published
2023

35. Clinical Profile and Prognostication of Traumatic Diffuse Axonal Injury

Author

Noor Rubina Ahamadi, Shivanand, Chandrashekar G.R, Vaidyanathan R, and Aravind R.M

Subjects
Pathology, medicine.medical_specialty, lcsh:R5-130.5, business.industry, traumatic brain injury, Diffuse axonal injury, Medicine, gcs, business, medicine.disease, diffuse axonal injury, mri, lcsh:General works
Abstract

BACKGROUND Diffuse Axonal Injury (DAI) is one of the most common causes of post-traumatic coma, disability and a persistent neuro-vegetative state. We wanted to study the clinical profile, prognostic factors and long-term outcome of patients admitted with traumatic diffuse axonal injury in our ICU. METHODS 74 patients who were admitted to the ICU with diffuse axonal injury following brain trauma between Jan 2010 to Dec 2019 were included in the study. Baseline clinical assessment, GCS scoring, basic investigations including serology, complete blood count, and biochemistry, CT Brain along with x - ray of cervical spine, chest x - ray, x - ray pelvis and ultrasound abdomen was done for all patients. MRI brain was done for all patients with clinical suspicion of diffuse axonal injury within 36 hours of injury. All those patients with MRI proven diffuse axonal injury were included in the study. Patients who had significant parenchymal lesions in the brain in the form of contusions or haemorrhage in brain or those patients who underwent craniotomy were excluded from the study. All the patients were managed in ICU as per standard protocol of brain trauma foundation (BTF) guidelines. RESULTS Out of 74 patients, 65 required ventilatory support. There was no in-hospital mortality. The average length of ICU stay is 14.7 days which is directly related to the initial GCS score on admission and MRI grading of diffuse axonal injury. The lower GCS score and severe diffuse axonal injuries as shown by higher MRI grades were associated with longer duration of ICU stays. Presence of ventilator associated pneumonia (VAP) is a significant factor in determining the ICU stay and was seen in 35 % of the patients in our study. Major deficits as assessed by Glasgow outcome evaluation scale (GOC - E) at the end of one month post discharge was seen in 6 patients (8.1 %). However, at the end of 6 months, no significant motor deficits were seen in any of the patients. 2 patients died during the intervening 5 month follow up period due to unrelated causes. One patient was lost for follow up after one month. CONCLUSIONS The overall outcome in traumatic diffuse axonal injury is favourable with 0 % mortality as against a higher rate reported in available literature ranging from 30 – 70 %.1 Disability rate at the end of 6 months was also nil in our study compared to varied distribution of 20 – 40 % reported in the literature. Infections remain one of the biggest challenges in managing these cases. A ventilator associated pneumonia (VAP) incidence of 35 % was seen in our series.

Published
2020
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36. Comparative Study of Management of Aluminium Phosphide Poisoning - Our Experience

Author

S P Adarsh, Ashoka H.G, Noor Rubina Ahmedi, and Vaidyanathan R

Subjects
poisoning, phosgene, lcsh:R5-130.5, business.industry, Metallurgy, Medicine, business, aluminium phosphide toxicity, coconut oil, lcsh:General works, Aluminium phosphide poisoning
Abstract

BACKGROUND We wanted to do a retrospective study of the distribution pattern, outcome with possible predictors affecting the mortality in patients who had consumed aluminium phosphide and were admitted in our ICU and compare difference in mortality among the two different regimens used during two different time frames. METHODS 63 patients who were admitted to the ICU between Jan 2011 to Dec 2017 after consumption of aluminium phosphide were studied. Baseline clinical assessment and routine investigations including complete blood counts, renal function tests, electrolytes, ECG, ABG and 2D Echo were done. For the first 4 years from 2011 - 2014, a standard regimen based mainly on supportive care was followed. For the remaining 3 years from 2015 - 2017, an aggressive regimen involving coconut oil, ascorbic acid, magnesium, NaHCO3 and supportive measures were followed. RESULTS Out of the 63 patients admitted during the study period, 16 patients died, and the remaining 47 patients survived. Serum lactate, MAP (Mean Arterial Pressure) at admission, MAP after 24 hours, and presence of arrhythmias were found to be significantly associated with both need for ventilatory support and mortality. The time elapsed since consumption of compound was not found to be associated with either mortality or the need for ventilatory support. On subgroup analysis of two different regimens followed, one with only supportive measures and the other with coconut oil, ascorbic acid, magnesium and sodium bicarbonate, it was found that there was no significant difference with either of the regimens with respect to mortality or need for ventilatory support. (p>0.05) CONCLUSIONS The overall treatment in these cases is highly favourable as the mortality is 25.39% compared to the 40 - 80% mortality reported in literature. Serum lactate, Mean Arterial Pressure (MAP) at admission, MAP after 24 hours and presence of arrhythmias on admission were found to be significantly associated with mortality though none of them were found to predict mortality independently. Coconut oilbased regimens are very popular in the management of aluminium phosphide poisoning. However, in our study it didn’t show any added advantage in terms of either ventilatory requirement or mortality difference over conventional supportive measures.

Published
2020
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37. Theoretical and experimental studies of electrical conductivity for functionally graded, heterogeneous surfaces.

Author

Jennings, J. M., Vaidyanathan, R., and Kar, A.

Subjects
*MAXWELL equations, *ELECTROMAGNETISM, *ELECTRIC conductivity, *RADIO frequency, *SURFACE conductivity
Abstract

A theoretical approach for estimating solutions to Maxwell's equations for structures with spatially-varying electromagnetic properties is presented for conductive media containing surfaces modified with functionally graded, heterogeneous electrical conductivity. The basis of the approach is an equivalent depth technique that replaces a graded conductivity region consisting of a phase mixture with a series of thin layers with uniform, multi-phase properties locally matching the effective mixture properties of the graded region. Radio frequency field propagation within each layer is determined as if it had existed within a constant conductivity medium but its depth is electromagnetically equivalent to the replaced graded region existing prior to the layer. The equivalent depth approach was applied to planar, thin foil, and cylindrical media to enable comparison with experimental results. Model predictions were compared with total transmission results for Pt-doped titanium thin foils and steady-state temperature rise in closed wire loops made from Sn-modified copper wire. For the thin foil case, the model-predicted total transmissivity shows good agreement with trends in the experimental results due to property changes in the modified surface layers. In the cylindrical wire case, similar agreement between the predicted effective conductivity values for the modified layers and experimental results was observed. Thus, the equivalent depth approach is an effective method for estimating solutions to Maxwell's equations in complex media and a useful tool for predicting the performance of tailored surface conductivity modifications. [ABSTRACT FROM AUTHOR]

Published
2019
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44. Impedance modulation control of a lower limb exoskeleton to assist sit-to-stand movements

Author

Huo, W, Moon, H, Alouane, MA, Bonnet, V, Huang, J, Amirat, Y, Vaidyanathan, R, Mohammed, S, Engineering & Physical Science Research Council (E, Engineering & Physical Science Research Council (EPSRC), and Medical Research Council

Subjects
Modulation, Technology, Science & Technology, Hip, STRATEGIES, Muscles, exoskeleton, Impedance, Adaptation models, Robotics, Balance reinforcement, sit-to-stand (STS) movement, ORTHOSES, INERTIAL PARAMETERS, Exoskeletons, 0906 Electrical and Electronic Engineering, impedance control, Industrial Engineering & Automation, Torque, STRENGTH, 0801 Artificial Intelligence and Image Processing, KNEE, HEALTHY, CHAIR, 0913 Mechanical Engineering
Abstract

As an important movement of the daily living activities, sit-to-stand (STS) movement is usually a difficult task facing elderly and dependent people. In this article, a novel impedance modulation strategy of a lower limb exoskeleton is proposed to provide appropriate power and balance assistance during STS movements while preserving the wearer’s control priority. The impedance modulation control strategy ensures adaptation of the mechanical impedance of the human-exoskeleton system towards a desired one requiring less wearer’s effect while reinforcing the wearer’s balance control ability during STS movements. A human joint torque observer is designed to estimate the joint torques developed by the wearer using joint position kinematics instead of electromyography (EMG) or force sensors; a time-varying desired impedance model is proposed according to the wearer’s lower limb motion ability. A virtual environmental force is designed for the balance reinforcement control. Stability and robustness of the proposed method are theoretically analyzed. Simulations were implemented to illustrate the characteristics and performance of the proposed approach. Experiments with four healthy subjects were carried out to evaluate the effectiveness of the proposed method and show satisfactory results in terms of appropriate power assist and balance reinforcement.

Published
2021

45. Microstructure and Microhardness of ZrO2 Reinforced PM 316L Austenitic Stainless Steel Composites Sintered in Ambient and Argon Atmosphere

Author

Mebratu Markos and MUTHU VAIDYANATHAN R

Subjects
Environmental Engineering, General Engineering, Computer Science Applications
Abstract

The present study examines the microstructure and microhardness of zirconia (ZrO2) reinforced PM 316L austenitic stainless steel matrix composites. ZrO2 was added in a proportion of 1 wt% to 3 wt%. Powders were compacted into a disc of 11mm diameter and 2mm thick at 70kN. Compacts were sintered in an ambient and argon atmosphere at 1250oC for 30 minutes. Sintered compacts were then analyzed for microhardness using Vickers hardness testing machine, and microstructure was examined using a scanning electron microscope. The study revealed that the reinforcement of ZrO2 significantly enhanced the microhardness of PM 316L SS matrix composites with a microstructure consisting of irregular porosity and zirconia encapsulating the 316L SS particles.

Published
2019
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46. Microstructural Evaluation of Friction Stir Welded Aluminium Alloy 6063

Author

Mebratu Markos and MUTHU VAIDYANATHAN R

Subjects
Management of Technology and Innovation, General Engineering
Abstract

Friction Stir Welding (FSW) is a vital solid-state process that can produce a joint with high quality and strength. The microstructure of the friction stir welded parts needs to be studied to use this method for multiple applications. FSW eliminates fusion fastening issues such as crack, porosity, and shrinking solidification. In the present work, AA6063 material was welded with prominent parameters, rotational speed, transverse speed, and axial load. The microstructure of distinct weld regions including the nugget area, heat affected zone, thermo-mechanically affected zone, and parent metal has been examined by optical microscopy. In this investigation the fine equiaxed grains were observed in the thermo-mechanically affected zone and nugget zone of various samples.

Published
2019
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47. Development of Forms and Functions of Negation in the Early Stages of Language Acquisition: A Study in Tamil.

Author

Vaidyanathan, R.

Abstract

The development of forms and functions of negation in parent-child interactions in the early stages of language acquisition is discussed with illustrative examples from field data relating to two Tamil-speaking children and their parents. An attempt is made to provide a scheme for analyzing the negatives in children's speech. (18 references) (JL)

Published
1991

48. Quantification of motor function post-stroke using wearable inertial and ,echanomyographic Sensors

Author

Formstone, L, Huo, W, Wilson, S, McGregor, A, Bentley, P, Vaidyanathan, R, and Engineering & Physical Science Research Council (E

Subjects
0906 Electrical and Electronic Engineering, 0903 Biomedical Engineering, Biomedical Engineering
Abstract

Subjective clinical rating scales represent the goldstandard diagnosis of motor function following stroke, however in practice they suffer from well-recognised limitations including variance between assessors, low inter-rater reliability and low resolution. Automated systems have been proposed for empirical quantification but have significantly impacted clinical practice. We address translational challenges in this arena through: (1) implementation of a novel sensor suite fusing inertial measurement and mechanomyography (MMG) to quantify hand and wrist motor function; and (2) introduction of a new range of signal features extracted from the suite to supplement predicted clinical scores. The wearable sensors, signal features, and sensor fusion algorithms have been combined to produce classified ratings from the Fugl-Meyer clinical assessment rating scale. Furthermore, we have designed the system to augment clinical rating with several sensor-derived supplementary features encompassing critical aspects of motor dysfunction (e.g. joint angle, muscle activity, etc.). Performance is validated through a large-scale study on a poststroke cohort of 64 patients. Fugl-Meyer Assessment tasks were classified with 75% accuracy for gross motor tasks and 62% for hand/wrist motor tasks. Of greater import, supplementary features demonstrated concurrent validity with Fugl-Meyer ratings, evidencing their utility as new measures of motor function suited to automated assessment. Finally, the supplementary features also provide continuous measures of sub-components of motor function, offering the potential to complement low accuracy but well-validated clinical rating scales when high-quality motor outcome measures are required. We believe this work provides a basis for widespread clinical adoption of inertial-MMG sensor use for post-stroke clinical motor assessment. Index Terms—Stroke, Fugl-Meyer assessment, automated upper-limb assessment, wearables, machine learning, mechanomyography

Published
2021

50. SANDWICH COMPOSITES: Sandwich Composites for Improved Thermal and Acoustic Protection.

Author

Obaid, A. A., Gillespie Jr., J. W., Chaudhari, S., Baxter, L., and Vaidyanathan, R.

Subjects
TRANSFER molding, HYBRID materials, SANDWICH construction (Materials), COMPOSITE structures, THERMAL shielding, TRANSMISSION of sound, THERMAL insulation, URETHANE foam
Abstract

The objective was to manufacture and test hybrid composite sandwich structures for improved thermal and acoustic protection properties compared to state-of-the-art sandwich structures. Hybrid sandwich composite panels consisting of a flexible silica aerogel core, Divinycell foam encapsulated with a Gore membrane layer and E-glass fiber infused with SC-15 epoxy or vinyl ester (VE) face-sheets were manufactured by Vacuum Assisted Resin Transfer Molding (VARTM) process. The porous aerogel core was encapsulated with a Gore membrane layer to allow for the removal of air while preventing resin infiltration during processing. These multifunctional composites combine thermal and acoustic shielding with structural performance. Baseline tests were conducted with the aerogel core encapsulated with glass fiber reinforced SC-15 epoxy facesheets while the final tests were conducted on the sandwich composite that also included the Divinycell foam and infused with VE resin. Steady-state thermal and acoustic measurements were performed in the temperature range of 66°C to 200°C and in the frequency range of 125 Hz to 8000 Hz, respectively. The surface temperature on the cold side of the composite panels was reduced by 62 to 68% to between 35 and 44°C (95 to 112°F) even when the hot-side temperature of the panels reached 149°C (300°F). From acoustic test results, it was shown that the aerogel material provided significant improvements in acoustic damping and reduction in sound transmission. The transmission loss (TL) for the composite panels was between 23 and 51 dB in the frequency range of 125-8000 Hz. These results were accomplished with a composite panel close to 25 mm (1") in thickness. Structural test results indicated that the encapsulation of aerogel blankets within the composite resulted in a reduction of 34% in the moment capacity and 46% in the flexural stiffness. From the results, a sandwich composite panel composed of epoxy face sheets and a combination of Divinycell foam layer, and a silica-based aerogel core represents a lightweight sandwich composite offered significant improvements in thermal insulation and acoustic damping. The encapsulation of the core in the sandwich also protected the core from damage and extended the useful life of the insulation. [ABSTRACT FROM AUTHOR]

Published
2022

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