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1. Nondestructive detection and quantification of localized corrosion rates by electrochemical tomography

Author

van Ede, Meeke C., Fichtner, Andreas, and Angst, Ueli

Subjects
Physics - Applied Physics
Abstract

Localized corrosion is one of the most common causes of early degradation of engineering structures. To non-destructively determine the location, size and rate of localized corrosion in porous media, a new technique, electrochemical tomography (ECT), has been theoretically and numerically formulated. The current work shows the application of ECT to measure corrosion rates in a controlled laboratory setup, with a stable electrolyte and well-defined macro-cell. The results show that ECT is able to replicate the corrosion size and location and can give a good estimation of the corrosion rate. Moreover, the validation of ECT on a well defined localized corrosion system, brings the technique closer to future field applications.

Published
2023

4. IMPACT-Global Hip Fracture Audit: Nosocomial infection, risk prediction and prognostication, minimum reporting standards and global collaborative audit. Lessons from an international multicentre study of 7,090 patients conducted in 14 nations during the COVID-19 pandemic

Author

Hall, A, Clement, N, Ojeda-Thies, C, Maclullich, A, Toro, G, Johansen, A, White, T, Duckworth, A, Abdul-Jabar, H, Abu-Rajab, R, Abugarja, A, Adam, K, Aguado Hernández, H, Améstica Lazcano, G, Anderson, S, Ansar, M, Antrobus, J, Aragón Achig, E, Archunan, M, Arrieta Salinas, M, Ashford-Wilson, S, Assens Gibert, C, Athanasopoulou, K, Awadelkarim, M, Baird, S, Bajada, S, Balakrishnan, S, Balasubramanian, S, Ballantyne, J, Bárcena Goitiandia, L, Barkham, B, Barmpagianni, C, Barres-Carsi, M, Barrett, S, Baskaran, D, Bell, J, Bell, K, Bell, S, Bellelli, G, Benchimol, J, Boietti, B, Boswell, S, Braile, A, Brennan, C, Brent, L, Brooke, B, Bruno, G, Burahee, A, Burns, S, Calabrò, G, Campbell, L, Carabelli, G, Carnegie, C, Carretero Cristobal, G, Caruana, E, Cassinello Ogea, M, Castellanos Robles, J, Castillon, P, Chakrabarti, A, Cecere, A, Chen, P, Clarke, J, Collins, G, Corrales Cardenal, J, Corsi, M, Cózar Adelantado, G, Craxford, S, Crooks, M, Cuarental-García, J, Cuthbert, R, Dall, G, Daskalakis, I, De Cicco, A, Diana, D, Demaria, P, Dereix, J, Díaz Jiménez, J, Dinamarca Montecinos, J, Do Le, H, Donoso Coppa, J, Drosos, G, Duffy, A, East, J, Eastwood, D, Elbahari, H, Elias de Molins Peña, C, Elmamoun, M, Emmerson, B, Escobar Sánchez, D, Faimali, M, Farré-Mercadé, M, Farrow, L, Fayez, A, Fell, A, Fenner, C, Ferguson, D, Finlayson, L, Flores Gómez, A, Freeman, N, French, J, Gabardo Calvo, S, Gagliardo, N, Garcia Albiñana, J, García Cruz, G, García de Cortázar Antolín, U, García Virto, V, Gealy, S, Gil Caballero, S, Gill, M, González González, M, Gopireddy, R, Guntley, D, Gurung, B, Guzmán Rosales, G, Haddad, N, Hafeez, M, Haller, P, Halligan, E, Hardie, J, Hawker, I, Helal, A, Herrera Cruz, M, Herreros Ruiz-Valdepeñas, R, Horton, J, Howells, S, Howieson, A, Hughes, L, Hünicken Torrez, F, Hurtado Ortega, A, Huxley, P, Hamid, H, Ilahi, N, Iliadis, A, Inman, D, Jadhao, P, Jandoo, R, Jawad, L, Jayatilaka, M, Jenkins, P, Jeyapalan, R, Johnson, D, Johnston, A, Joseph, S, Kapoor, S, Karagiannidis, G, Karanam, K, Kattakayam, F, Konarski, A, Kontakis, G, Labrador Hernández, G, Lancaster, V, Landi, G, Le, B, Liew, I, Logishetty, K, Lopez Marquez, A, Lopez, J, Lum, J, Macpherson, G, Madan, S, Mahroof, S, Malik-Tabassum, K, Mallina, R, Maqsood, A, Marson, B, Martin Legorburo, M, Martin-Perez, E, Martínez Jiménez, T, Martinez Martin, J, Mayne, A, Mayor, A, Mcalinden, G, Mclean, L, Mcdonald, L, Mcintyre, J, Mckay, P, Mckean, G, Mcshane, H, Medici, A, Meeke, C, Meldrum, E, Mendez, M, Mercer, S, Merino Perez, J, Mesa-Lampré, M, Mighton, S, Milne, K, Mohamed Yaseen, M, Moppett, I, Mora, J, Morales-Zumel, S, Moreno Fenoll, I, Mousa, A, Murray, A, Murray, E, Nair, R, Neary, F, Negri, G, Negus, O, Newham-Harvey, F, Ng, N, Nightingale, J, Noor Mohamed Anver, S, Nunag, P, O'Hare, M, Ollivere, B, Ortés Gómez, R, Owens, A, Page, S, Palloni, V, Panagiotopoulos, A, Panagiotopoulos, E, Panesar, P, Papadopoulos, A, Spyridon, P, Pareja Sierra, T, Park, C, Parwaiz, H, Paterson-Byrne, P, Patton, S, Pearce, J, Porter, M, Pellegrino, A, Pèrez Cuellar, A, Pezzella, R, Phadnis, A, Pinder, C, Piper, D, Powell-Bowns, M, Prieto Martín, R, Probert, A, Ramesh, A, Ramírez de Arellano, M, Renton, D, Rickman, S, Robertson, A, Roche Albero, A, Rodrigo Verguizas, J, Rodríguez Couso, M, Rooney, J, Sáez-López, P, Saldaña-Díaz, A, Santulli, A, Sanz Pérez, M, Sarraf, K, Scarsbrook, C, Scott, C, Scott, J, Shah, S, Sharaf, S, Sharma, S, Shirley, D, Siano, A, Simpson, J, Singh, A, Sinnett, T, Sisodia, G, Smith, P, Sophena Bert, E, Steel, M, Stewart, A, Stewart, C, Sugand, K, Sullivan, N, Sweeting, L, Symes, M, Tan, D, Tancredi, F, Tatani, I, Thomas, P, Thomson, F, Toner, N, Tong, A, Toro, A, Tosounidis, T, Tottas, S, Trinidad Leo, A, Tucker, D, Vemulapalli, K, Ventura Garces, D, Vernon, O, Viveros Garcia, J, Ward, A, Ward, K, Watson, K, Weerasuriya, T, Wickramanayake, U, Wilkinson, H, Windley, J, Wood, J, Wynell-Mayow, W, Zatti, G, Zeiton, M, Zurrón Lobato, M, Hall, Andrew J., Clement, Nicholas D., Ojeda-Thies, Cristina, MacLullich, Alasdair MJ., Toro, Giuseppe, Johansen, Antony, White, Tim O., Duckworth, Andrew D., Abdul-Jabar, Hani, Abu-Rajab, Rashid, Abugarja, Ahmed, Adam, Karen, Aguado Hernández, Héctor J., Améstica Lazcano, Gedeón, Anderson, Sarah, Ansar, Mahmood, Antrobus, Jonathan, Aragón Achig, Esteban Javier, Archunan, Maheswaran, Arrieta Salinas, Mirentxu, Ashford-Wilson, Sarah, Assens Gibert, Cristina, Athanasopoulou, Katerina, Awadelkarim, Mohamed, Baird, Stuart, Bajada, Stefan, Balakrishnan, Shobana, Balasubramanian, Sathishkumar, Ballantyne, James A., Bárcena Goitiandia, Leopoldo, Barkham, Benjamin, Barmpagianni, Christina, Barres-Carsi, Mariano, Barrett, Sarah, Baskaran, Dinnish, Bell, Jean, Bell, Katrina, Bell, Stuart, Bellelli, Giuseppe, Benchimol, Javier Alberto, Boietti, Bruno Rafael, Boswell, Sally, Braile, Adriano, Brennan, Caitlin, Brent, Louise, Brooke, Ben, Bruno, Gaetano, Burahee, Abdus, Burns, Shirley, Calabrò, Giampiero, Campbell, Lucy, Carabelli, Guido Sebastian, Carnegie, Carol, Carretero Cristobal, Guillermo, Caruana, Ethan, Cassinello Ogea, M. a Concepción, Castellanos Robles, Juan, Castillon, Pablo, Chakrabarti, Anil, Cecere, Antonio Benedetto, Chen, Ping, Clarke, Jon V., Collins, Grace, Corrales Cardenal, Jorge E., Corsi, Maurizio, Cózar Adelantado, Gara María, Craxford, Simon, Crooks, Melissa, Cuarental-García, Javier, Cuthbert, Rory, Dall, Graham, Daskalakis, Ioannis, De Cicco, Annalisa, Diana, de la Fuente de Dios, Demaria, Pablo, Dereix, John, Díaz Jiménez, Julian, Dinamarca Montecinos, José Luis, Do Le, Ha Phuong, Donoso Coppa, Juan Pablo, Drosos, Georgios, Duffy, Andrew, East, Jamie, Eastwood, Deborah, Elbahari, Hassan, Elias de Molins Peña, Carmen, Elmamoun, Mamoun, Emmerson, Ben, Escobar Sánchez, Daniel, Faimali, Martina, Farré-Mercadé, Maria Victòria, Farrow, Luke, Fayez, Almari, Fell, Adam, Fenner, Christopher, Ferguson, David, Finlayson, Louise, Flores Gómez, Aldo, Freeman, Nicholas, French, Jonathan, Gabardo Calvo, Santiago, Gagliardo, Nicola, Garcia Albiñana, Joan, García Cruz, Guillermo, García de Cortázar Antolín, Unai, García Virto, Virginia, Gealy, Sophie, Gil Caballero, Sandra Marcela, Gill, Moneet, González González, María Soledad, Gopireddy, Rajesh, Guntley, Diane, Gurung, Binay, Guzmán Rosales, Guadalupe, Haddad, Nedaa, Hafeez, Mahum, Haller, Petra, Halligan, Emer, Hardie, John, Hawker, Imogen, Helal, Amr, Herrera Cruz, Mariana, Herreros Ruiz-Valdepeñas, Ruben, Horton, James, Howells, Sean, Howieson, Alan, Hughes, Luke, Hünicken Torrez, Flavia Lorena, Hurtado Ortega, Ana, Huxley, Peter, Hamid, Hytham K. S., Ilahi, Nida, Iliadis, Alexis, Inman, Dominic, Jadhao, Piyush, Jandoo, Rajan, Jawad, Lucy, Jayatilaka, Malwattage Lara Tania, Jenkins, Paul J., Jeyapalan, Rathan, Johnson, David, Johnston, Andrew, Joseph, Sarah, Kapoor, Siddhant, Karagiannidis, Georgios, Karanam, Krishna Saga, Kattakayam, Freddy, Konarski, Alastair, Kontakis, Georgios, Labrador Hernández, Gregorio, Lancaster, Victoria, Landi, Giovanni, Le, Brian, Liew, Ignatius, Logishetty, Kartik, Lopez Marquez, Andrew Carlomaria Daniel, Lopez, Judit, Lum, Joann, Macpherson, Gavin J., Madan, Suvira, Mahroof, Sabreena, Malik-Tabassum, Khalid, Mallina, Ravi, Maqsood, Afnan, Marson, Ben, Martin Legorburo, M José, Martin-Perez, Encarna, Martínez Jiménez, Tania, Martinez Martin, Javier, Mayne, Alistair, Mayor, Amy, McAlinden, Gavan, McLean, Lucille, McDonald, Lorna, McIntyre, Joshua, McKay, Pamela, McKean, Greg, McShane, Heather, Medici, Antonio, Meeke, Chelsea, Meldrum, Evonne, Mendez, Mijail, Mercer, Scott, Merino Perez, Josu, Mesa-Lampré, María-Pilar, Mighton, Shuna, Milne, Kirsty, Mohamed Yaseen, Muhammed, Moppett, Iain, Mora, Jesus, Morales-Zumel, Sira, Moreno Fenoll, Irene Blanca, Mousa, Adham, Murray, Alastair W., Murray, Elspeth V., Nair, Radhika, Neary, Fiona, Negri, Giacomo, Negus, Oliver, Newham-Harvey, Fiona, Ng, Nigel, Nightingale, Jess, Noor Mohamed Anver, Sumiya, Nunag, Perrico, O'Hare, Matthew, Ollivere, Ben, Ortés Gómez, Raquel, Owens, AnneMarie, Page, Siobhan, Palloni, Valentina, Panagiotopoulos, Andreas, Panagiotopoulos, Elias, Panesar, Paul, Papadopoulos, Antonios, Spyridon, Papagiannis, Pareja Sierra, Teresa, Park, Chang, Parwaiz, Hammad, Paterson-Byrne, Paul, Patton, Sam, Pearce, Jack, Porter, Marina, Pellegrino, Achille, Pèrez Cuellar, Arturo, Pezzella, Raffaele, Phadnis, Ashish, Pinder, Charlotte, Piper, Danielle, Powell-Bowns, Matilda, Prieto Martín, Rocío, Probert, Annabel, Ramesh, Ashwanth, Ramírez de Arellano, Manuel Vicente Mejía, Renton, Duncan, Rickman, Stephen, Robertson, Alastair, Roche Albero, Adrian, Rodrigo Verguizas, José Alberto, Rodríguez Couso, Myriam, Rooney, Joanna, Sáez-López, Pilar, Saldaña-Díaz, Andres, Santulli, Adriano, Sanz Pérez, Marta Isabel, Sarraf, Khaled M., Scarsbrook, Christine, Scott, Chloe E. H., Scott, Jennifer, Shah, Sachi, Sharaf, Sharief, Sharma, Sidharth, Shirley, Denise, Siano, Antonio, Simpson, James, Singh, Abhinav, Singh, Amit, Sinnett, Tim, Sisodia, Gurudatt, Smith, Philomena, Sophena Bert, Eugenia, Steel, Michael, Stewart, Avril, Stewart, Claire, Sugand, Kapil, Sullivan, Niall, Sweeting, Lauren, Symes, Michael, Tan, Dylan Jun Hao, Tancredi, Francesco, Tatani, Irini, Thomas, Philip, Thomson, Fraser, Toner, Niamh S., Tong, Anna, Toro, Antonio, Tosounidis, Theodoros, Tottas, Stylianos, Trinidad Leo, Andrea, Tucker, Damien, Vemulapalli, Krishna, Ventura Garces, Diego, Vernon, Olivia Katherine, Viveros Garcia, Juan Carlos, Ward, Alex, Ward, Kirsty, Watson, Kate, Weerasuriya, Thisara, Wickramanayake, Udara, Wilkinson, Hannah, Windley, Joseph, Wood, Janet, Wynell-Mayow, William, Zatti, Giovanni, Zeiton, Moez, Zurrón Lobato, Miriam, Hall, A, Clement, N, Ojeda-Thies, C, Maclullich, A, Toro, G, Johansen, A, White, T, Duckworth, A, Abdul-Jabar, H, Abu-Rajab, R, Abugarja, A, Adam, K, Aguado Hernández, H, Améstica Lazcano, G, Anderson, S, Ansar, M, Antrobus, J, Aragón Achig, E, Archunan, M, Arrieta Salinas, M, Ashford-Wilson, S, Assens Gibert, C, Athanasopoulou, K, Awadelkarim, M, Baird, S, Bajada, S, Balakrishnan, S, Balasubramanian, S, Ballantyne, J, Bárcena Goitiandia, L, Barkham, B, Barmpagianni, C, Barres-Carsi, M, Barrett, S, Baskaran, D, Bell, J, Bell, K, Bell, S, Bellelli, G, Benchimol, J, Boietti, B, Boswell, S, Braile, A, Brennan, C, Brent, L, Brooke, B, Bruno, G, Burahee, A, Burns, S, Calabrò, G, Campbell, L, Carabelli, G, Carnegie, C, Carretero Cristobal, G, Caruana, E, Cassinello Ogea, M, Castellanos Robles, J, Castillon, P, Chakrabarti, A, Cecere, A, Chen, P, Clarke, J, Collins, G, Corrales Cardenal, J, Corsi, M, Cózar Adelantado, G, Craxford, S, Crooks, M, Cuarental-García, J, Cuthbert, R, Dall, G, Daskalakis, I, De Cicco, A, Diana, D, Demaria, P, Dereix, J, Díaz Jiménez, J, Dinamarca Montecinos, J, Do Le, H, Donoso Coppa, J, Drosos, G, Duffy, A, East, J, Eastwood, D, Elbahari, H, Elias de Molins Peña, C, Elmamoun, M, Emmerson, B, Escobar Sánchez, D, Faimali, M, Farré-Mercadé, M, Farrow, L, Fayez, A, Fell, A, Fenner, C, Ferguson, D, Finlayson, L, Flores Gómez, A, Freeman, N, French, J, Gabardo Calvo, S, Gagliardo, N, Garcia Albiñana, J, García Cruz, G, García de Cortázar Antolín, U, García Virto, V, Gealy, S, Gil Caballero, S, Gill, M, González González, M, Gopireddy, R, Guntley, D, Gurung, B, Guzmán Rosales, G, Haddad, N, Hafeez, M, Haller, P, Halligan, E, Hardie, J, Hawker, I, Helal, A, Herrera Cruz, M, Herreros Ruiz-Valdepeñas, R, Horton, J, Howells, S, Howieson, A, Hughes, L, Hünicken Torrez, F, Hurtado Ortega, A, Huxley, P, Hamid, H, Ilahi, N, Iliadis, A, Inman, D, Jadhao, P, Jandoo, R, Jawad, L, Jayatilaka, M, Jenkins, P, Jeyapalan, R, Johnson, D, Johnston, A, Joseph, S, Kapoor, S, Karagiannidis, G, Karanam, K, Kattakayam, F, Konarski, A, Kontakis, G, Labrador Hernández, G, Lancaster, V, Landi, G, Le, B, Liew, I, Logishetty, K, Lopez Marquez, A, Lopez, J, Lum, J, Macpherson, G, Madan, S, Mahroof, S, Malik-Tabassum, K, Mallina, R, Maqsood, A, Marson, B, Martin Legorburo, M, Martin-Perez, E, Martínez Jiménez, T, Martinez Martin, J, Mayne, A, Mayor, A, Mcalinden, G, Mclean, L, Mcdonald, L, Mcintyre, J, Mckay, P, Mckean, G, Mcshane, H, Medici, A, Meeke, C, Meldrum, E, Mendez, M, Mercer, S, Merino Perez, J, Mesa-Lampré, M, Mighton, S, Milne, K, Mohamed Yaseen, M, Moppett, I, Mora, J, Morales-Zumel, S, Moreno Fenoll, I, Mousa, A, Murray, A, Murray, E, Nair, R, Neary, F, Negri, G, Negus, O, Newham-Harvey, F, Ng, N, Nightingale, J, Noor Mohamed Anver, S, Nunag, P, O'Hare, M, Ollivere, B, Ortés Gómez, R, Owens, A, Page, S, Palloni, V, Panagiotopoulos, A, Panagiotopoulos, E, Panesar, P, Papadopoulos, A, Spyridon, P, Pareja Sierra, T, Park, C, Parwaiz, H, Paterson-Byrne, P, Patton, S, Pearce, J, Porter, M, Pellegrino, A, Pèrez Cuellar, A, Pezzella, R, Phadnis, A, Pinder, C, Piper, D, Powell-Bowns, M, Prieto Martín, R, Probert, A, Ramesh, A, Ramírez de Arellano, M, Renton, D, Rickman, S, Robertson, A, Roche Albero, A, Rodrigo Verguizas, J, Rodríguez Couso, M, Rooney, J, Sáez-López, P, Saldaña-Díaz, A, Santulli, A, Sanz Pérez, M, Sarraf, K, Scarsbrook, C, Scott, C, Scott, J, Shah, S, Sharaf, S, Sharma, S, Shirley, D, Siano, A, Simpson, J, Singh, A, Sinnett, T, Sisodia, G, Smith, P, Sophena Bert, E, Steel, M, Stewart, A, Stewart, C, Sugand, K, Sullivan, N, Sweeting, L, Symes, M, Tan, D, Tancredi, F, Tatani, I, Thomas, P, Thomson, F, Toner, N, Tong, A, Toro, A, Tosounidis, T, Tottas, S, Trinidad Leo, A, Tucker, D, Vemulapalli, K, Ventura Garces, D, Vernon, O, Viveros Garcia, J, Ward, A, Ward, K, Watson, K, Weerasuriya, T, Wickramanayake, U, Wilkinson, H, Windley, J, Wood, J, Wynell-Mayow, W, Zatti, G, Zeiton, M, Zurrón Lobato, M, Hall, Andrew J., Clement, Nicholas D., Ojeda-Thies, Cristina, MacLullich, Alasdair MJ., Toro, Giuseppe, Johansen, Antony, White, Tim O., Duckworth, Andrew D., Abdul-Jabar, Hani, Abu-Rajab, Rashid, Abugarja, Ahmed, Adam, Karen, Aguado Hernández, Héctor J., Améstica Lazcano, Gedeón, Anderson, Sarah, Ansar, Mahmood, Antrobus, Jonathan, Aragón Achig, Esteban Javier, Archunan, Maheswaran, Arrieta Salinas, Mirentxu, Ashford-Wilson, Sarah, Assens Gibert, Cristina, Athanasopoulou, Katerina, Awadelkarim, Mohamed, Baird, Stuart, Bajada, Stefan, Balakrishnan, Shobana, Balasubramanian, Sathishkumar, Ballantyne, James A., Bárcena Goitiandia, Leopoldo, Barkham, Benjamin, Barmpagianni, Christina, Barres-Carsi, Mariano, Barrett, Sarah, Baskaran, Dinnish, Bell, Jean, Bell, Katrina, Bell, Stuart, Bellelli, Giuseppe, Benchimol, Javier Alberto, Boietti, Bruno Rafael, Boswell, Sally, Braile, Adriano, Brennan, Caitlin, Brent, Louise, Brooke, Ben, Bruno, Gaetano, Burahee, Abdus, Burns, Shirley, Calabrò, Giampiero, Campbell, Lucy, Carabelli, Guido Sebastian, Carnegie, Carol, Carretero Cristobal, Guillermo, Caruana, Ethan, Cassinello Ogea, M. a Concepción, Castellanos Robles, Juan, Castillon, Pablo, Chakrabarti, Anil, Cecere, Antonio Benedetto, Chen, Ping, Clarke, Jon V., Collins, Grace, Corrales Cardenal, Jorge E., Corsi, Maurizio, Cózar Adelantado, Gara María, Craxford, Simon, Crooks, Melissa, Cuarental-García, Javier, Cuthbert, Rory, Dall, Graham, Daskalakis, Ioannis, De Cicco, Annalisa, Diana, de la Fuente de Dios, Demaria, Pablo, Dereix, John, Díaz Jiménez, Julian, Dinamarca Montecinos, José Luis, Do Le, Ha Phuong, Donoso Coppa, Juan Pablo, Drosos, Georgios, Duffy, Andrew, East, Jamie, Eastwood, Deborah, Elbahari, Hassan, Elias de Molins Peña, Carmen, Elmamoun, Mamoun, Emmerson, Ben, Escobar Sánchez, Daniel, Faimali, Martina, Farré-Mercadé, Maria Victòria, Farrow, Luke, Fayez, Almari, Fell, Adam, Fenner, Christopher, Ferguson, David, Finlayson, Louise, Flores Gómez, Aldo, Freeman, Nicholas, French, Jonathan, Gabardo Calvo, Santiago, Gagliardo, Nicola, Garcia Albiñana, Joan, García Cruz, Guillermo, García de Cortázar Antolín, Unai, García Virto, Virginia, Gealy, Sophie, Gil Caballero, Sandra Marcela, Gill, Moneet, González González, María Soledad, Gopireddy, Rajesh, Guntley, Diane, Gurung, Binay, Guzmán Rosales, Guadalupe, Haddad, Nedaa, Hafeez, Mahum, Haller, Petra, Halligan, Emer, Hardie, John, Hawker, Imogen, Helal, Amr, Herrera Cruz, Mariana, Herreros Ruiz-Valdepeñas, Ruben, Horton, James, Howells, Sean, Howieson, Alan, Hughes, Luke, Hünicken Torrez, Flavia Lorena, Hurtado Ortega, Ana, Huxley, Peter, Hamid, Hytham K. S., Ilahi, Nida, Iliadis, Alexis, Inman, Dominic, Jadhao, Piyush, Jandoo, Rajan, Jawad, Lucy, Jayatilaka, Malwattage Lara Tania, Jenkins, Paul J., Jeyapalan, Rathan, Johnson, David, Johnston, Andrew, Joseph, Sarah, Kapoor, Siddhant, Karagiannidis, Georgios, Karanam, Krishna Saga, Kattakayam, Freddy, Konarski, Alastair, Kontakis, Georgios, Labrador Hernández, Gregorio, Lancaster, Victoria, Landi, Giovanni, Le, Brian, Liew, Ignatius, Logishetty, Kartik, Lopez Marquez, Andrew Carlomaria Daniel, Lopez, Judit, Lum, Joann, Macpherson, Gavin J., Madan, Suvira, Mahroof, Sabreena, Malik-Tabassum, Khalid, Mallina, Ravi, Maqsood, Afnan, Marson, Ben, Martin Legorburo, M José, Martin-Perez, Encarna, Martínez Jiménez, Tania, Martinez Martin, Javier, Mayne, Alistair, Mayor, Amy, McAlinden, Gavan, McLean, Lucille, McDonald, Lorna, McIntyre, Joshua, McKay, Pamela, McKean, Greg, McShane, Heather, Medici, Antonio, Meeke, Chelsea, Meldrum, Evonne, Mendez, Mijail, Mercer, Scott, Merino Perez, Josu, Mesa-Lampré, María-Pilar, Mighton, Shuna, Milne, Kirsty, Mohamed Yaseen, Muhammed, Moppett, Iain, Mora, Jesus, Morales-Zumel, Sira, Moreno Fenoll, Irene Blanca, Mousa, Adham, Murray, Alastair W., Murray, Elspeth V., Nair, Radhika, Neary, Fiona, Negri, Giacomo, Negus, Oliver, Newham-Harvey, Fiona, Ng, Nigel, Nightingale, Jess, Noor Mohamed Anver, Sumiya, Nunag, Perrico, O'Hare, Matthew, Ollivere, Ben, Ortés Gómez, Raquel, Owens, AnneMarie, Page, Siobhan, Palloni, Valentina, Panagiotopoulos, Andreas, Panagiotopoulos, Elias, Panesar, Paul, Papadopoulos, Antonios, Spyridon, Papagiannis, Pareja Sierra, Teresa, Park, Chang, Parwaiz, Hammad, Paterson-Byrne, Paul, Patton, Sam, Pearce, Jack, Porter, Marina, Pellegrino, Achille, Pèrez Cuellar, Arturo, Pezzella, Raffaele, Phadnis, Ashish, Pinder, Charlotte, Piper, Danielle, Powell-Bowns, Matilda, Prieto Martín, Rocío, Probert, Annabel, Ramesh, Ashwanth, Ramírez de Arellano, Manuel Vicente Mejía, Renton, Duncan, Rickman, Stephen, Robertson, Alastair, Roche Albero, Adrian, Rodrigo Verguizas, José Alberto, Rodríguez Couso, Myriam, Rooney, Joanna, Sáez-López, Pilar, Saldaña-Díaz, Andres, Santulli, Adriano, Sanz Pérez, Marta Isabel, Sarraf, Khaled M., Scarsbrook, Christine, Scott, Chloe E. H., Scott, Jennifer, Shah, Sachi, Sharaf, Sharief, Sharma, Sidharth, Shirley, Denise, Siano, Antonio, Simpson, James, Singh, Abhinav, Singh, Amit, Sinnett, Tim, Sisodia, Gurudatt, Smith, Philomena, Sophena Bert, Eugenia, Steel, Michael, Stewart, Avril, Stewart, Claire, Sugand, Kapil, Sullivan, Niall, Sweeting, Lauren, Symes, Michael, Tan, Dylan Jun Hao, Tancredi, Francesco, Tatani, Irini, Thomas, Philip, Thomson, Fraser, Toner, Niamh S., Tong, Anna, Toro, Antonio, Tosounidis, Theodoros, Tottas, Stylianos, Trinidad Leo, Andrea, Tucker, Damien, Vemulapalli, Krishna, Ventura Garces, Diego, Vernon, Olivia Katherine, Viveros Garcia, Juan Carlos, Ward, Alex, Ward, Kirsty, Watson, Kate, Weerasuriya, Thisara, Wickramanayake, Udara, Wilkinson, Hannah, Windley, Joseph, Wood, Janet, Wynell-Mayow, William, Zatti, Giovanni, Zeiton, Moez, and Zurrón Lobato, Miriam

Abstract

Aims: This international study aimed to assess: 1) the prevalence of preoperative and postoperative COVID-19 among patients with hip fracture, 2) the effect on 30-day mortality, and 3) clinical factors associated with the infection and with mortality in COVID-19-positive patients. Methods: A multicentre collaboration among 112 centres in 14 countries collected data on all patients presenting with a hip fracture between 1st March-31st May 2020. Demographics, residence, place of injury, presentation blood tests, Nottingham Hip Fracture Score, time to surgery, management, ASA grade, length of stay, COVID-19 and 30-day mortality status were recorded. Results: A total of 7090 patients were included, with a mean age of 82.2 (range 50–104) years and 4959 (69.9%) being female. Of 651 (9.2%) patients diagnosed with COVID-19, 225 (34.6%) were positive at presentation and 426 (65.4%) were positive postoperatively. Positive COVID-19 status was independently associated with male sex (odds ratio (OR) 1.38, p = 0.001), residential care (OR 2.15, p < 0.001), inpatient fall (OR 2.23, p = 0.003), cancer (OR 0.63, p = 0.009), ASA grades 4 (OR 1.59, p = 0.008) or 5 (OR 8.28, p < 0.001), and longer admission (OR 1.06 for each increasing day, p < 0.001). Patients with COVID-19 at any time had a significantly lower chance of 30-day survival versus those without COVID-19 (72.7% versus 92.6%, p < 0.001). COVID-19 was independently associated with an increased 30-day mortality risk (hazard ratio (HR) 2.83, p < 0.001). Increasing age (HR 1.03, p = 0.028), male sex (HR 2.35, p < 0.001), renal disease (HR 1.53, p = 0.017), and pulmonary disease (HR 1.45, p = 0.039) were independently associated with a higher 30-day mortality risk in patients with COVID-19 when adjusting for confounders. Conclusion: The prevalence of COVID-19 in hip fracture patients during the first wave of the pandemic was 9%, and was independently associated with a three-fold increased 30-day mortality risk.

Published
2022

5. Hybrid Broadband Seismograms for Seismic Shaking Scenarios: An Application to the Po Plain Sedimentary Basin (Northern Italy)

Author

Andrea Morelli, Irene Molinari, Julie Baron, Meeke C. van Ede, Walter Imperatori, and Edi Kissling

Subjects
Ambient noise level, Phase (waves), Magnitude (mathematics), Low frequency, Classification of discontinuities, 010502 geochemistry & geophysics, 01 natural sciences, Geophysics, Amplitude, Geochemistry and Petrology, Waveform, Seismogram, Geology, Seismology, 0105 earth and related environmental sciences
Abstract

The densely populated Po Plain, a very deep sedimentary basin in northern Italy, is prone to heavy shaking during earthquakes. Seismic hazard assessment must account for local variation in wave amplification. Standard ground motion prediction equations may fail to picture the complexity of strong lateral gradients in seismic response, due to sharp structural heterogeneity. For this reason, there is an increasing demand for full waveform predictions for engineering applications. Here, we present an implementation of a hybrid broadband simulation based on the method of Mai et al. (Bull Seismol Soc Am 100(6):3338–3339, 2010), to obtain complete broadband seismograms of 0.1–10 Hz. With this method, low frequency (< 1 Hz) and high frequency (1–10 Hz) seismograms are simulated separately using a deterministic and a stochastic method, respectively. We apply the method to four events recorded within the Po basin, with magnitude ranging from Mw = 4.4 to Mw = 5.6. The low frequency (LF) simulation is performed using SPECFEM3D on a few test subsurface velocity models. The three-dimensional velocity model MAMBo (Molinari et al. in Bull Seismol Soc Am 105(2A):753–764, 2015)—consisting of a detailed structural description of the basin, based on extensive active-source data, embedded within a regional 3D crustal model—provided the best results for broadband simulations that most closely corresponded with the observations. It performed better than an ambient noise tomography model with more accurate S-wave velocities but less well defined layer topographies, emphasizing the importance of first order velocity discontinuities. The high frequency (HF) seismograms are simulated using the multiple scattering approach of Zeng et al. (J Geophys Res Solid Earth 96(B1):607–619, 1991). The scattering coefficients are obtained by performing a non linear inversion for each station to find best fitting synthetic envelopes. HF energy is then combined at $$\sim$$ 1 Hz to match the amplitude and phase spectra of the LF signal. We are able to simulate full waveforms throughout the Po Plain, of which shaking duration matches observed data for stations located in the basin. Shaking amplitudes are generally overestimated in the low frequency simulation by the MAMBo velocity model. Updating the MAMBo velocity model with more accurate S-wave velocity information of the ambient noise tomography model should improve the fit in future simulations.

Published
2019

7. IMPACT-Global Hip Fracture Audit: Nosocomial infection, risk prediction and prognostication, minimum reporting standards and global collaborative audit. Lessons from an international multicentre study of 7,090 patients conducted in 14 nations during the COVID-19 pandemic

Author

Hall, Andrew J., Clement, Nicholas D., Ojeda-Thies, Cristina, MacLullich, Alasdair MJ., Toro, Giuseppe, Johansen, Antony, White, Tim O., Duckworth, Andrew D., Abdul-Jabar, Hani, Abu-Rajab, Rashid, Abugarja, Ahmed, Adam, Karen, Aguado Hernández, Héctor J., Améstica Lazcano, Gedeón, Anderson, Sarah, Ansar, Mahmood, Antrobus, Jonathan, Aragón Achig, Esteban Javier, Archunan, Maheswaran, Arrieta Salinas, Mirentxu, Ashford-Wilson, Sarah, Assens Gibert, Cristina, Athanasopoulou, Katerina, Awadelkarim, Mohamed, Baird, Stuart, Bajada, Stefan, Balakrishnan, Shobana, Balasubramanian, Sathishkumar, Ballantyne, James A., Bárcena Goitiandia, Leopoldo, Barkham, Benjamin, Barmpagianni, Christina, Barres-Carsi, Mariano, Barrett, Sarah, Baskaran, Dinnish, Bell, Jean, Bell, Katrina, Bell, Stuart, Bellelli, Giuseppe, Benchimol, Javier Alberto, Boietti, Bruno Rafael, Boswell, Sally, Braile, Adriano, Brennan, Caitlin, Brent, Louise, Brooke, Ben, Bruno, Gaetano, Burahee, Abdus, Burns, Shirley, Calabrò, Giampiero, Campbell, Lucy, Carabelli, Guido Sebastian, Carnegie, Carol, Carretero Cristobal, Guillermo, Caruana, Ethan, Cassinello Ogea, M. a Concepción, Castellanos Robles, Juan, Castillon, Pablo, Chakrabarti, Anil, Cecere, Antonio Benedetto, Chen, Ping, Clarke, Jon V., Collins, Grace, Corrales Cardenal, Jorge E., Corsi, Maurizio, Cózar Adelantado, Gara María, Craxford, Simon, Crooks, Melissa, Cuarental-García, Javier, Cuthbert, Rory, Dall, Graham, Daskalakis, Ioannis, De Cicco, Annalisa, Diana, de la Fuente de Dios, Demaria, Pablo, Dereix, John, Díaz Jiménez, Julian, Dinamarca Montecinos, José Luis, Do Le, Ha Phuong, Donoso Coppa, Juan Pablo, Drosos, Georgios, Duffy, Andrew, East, Jamie, Eastwood, Deborah, Elbahari, Hassan, Elias de Molins Peña, Carmen, Elmamoun, Mamoun, Emmerson, Ben, Escobar Sánchez, Daniel, Faimali, Martina, Farré-Mercadé, Maria Victòria, Farrow, Luke, Fayez, Almari, Fell, Adam, Fenner, Christopher, Ferguson, David, Finlayson, Louise, Flores Gómez, Aldo, Freeman, Nicholas, French, Jonathan, Gabardo Calvo, Santiago, Gagliardo, Nicola, Garcia Albiñana, Joan, García Cruz, Guillermo, García de Cortázar Antolín, Unai, García Virto, Virginia, Gealy, Sophie, Gil Caballero, Sandra Marcela, Gill, Moneet, González González, María Soledad, Gopireddy, Rajesh, Guntley, Diane, Gurung, Binay, Guzmán Rosales, Guadalupe, Haddad, Nedaa, Hafeez, Mahum, Haller, Petra, Halligan, Emer, Hardie, John, Hawker, Imogen, Helal, Amr, Herrera Cruz, Mariana, Herreros Ruiz-Valdepeñas, Ruben, Horton, James, Howells, Sean, Howieson, Alan, Hughes, Luke, Hünicken Torrez, Flavia Lorena, Hurtado Ortega, Ana, Huxley, Peter, Hamid, Hytham K. S., Ilahi, Nida, Iliadis, Alexis, Inman, Dominic, Jadhao, Piyush, Jandoo, Rajan, Jawad, Lucy, Jayatilaka, Malwattage Lara Tania, Jenkins, Paul J., Jeyapalan, Rathan, Johnson, David, Johnston, Andrew, Joseph, Sarah, Kapoor, Siddhant, Karagiannidis, Georgios, Karanam, Krishna Saga, Kattakayam, Freddy, Konarski, Alastair, Kontakis, Georgios, Labrador Hernández, Gregorio, Lancaster, Victoria, Landi, Giovanni, Le, Brian, Liew, Ignatius, Logishetty, Kartik, Lopez Marquez, Andrew Carlomaria Daniel, Lopez, Judit, Lum, Joann, Macpherson, Gavin J., Madan, Suvira, Mahroof, Sabreena, Malik-Tabassum, Khalid, Mallina, Ravi, Maqsood, Afnan, Marson, Ben, Martin Legorburo, M José, Martin-Perez, Encarna, Martínez Jiménez, Tania, Martinez Martin, Javier, Mayne, Alistair, Mayor, Amy, McAlinden, Gavan, McLean, Lucille, McDonald, Lorna, McIntyre, Joshua, McKay, Pamela, McKean, Greg, McShane, Heather, Medici, Antonio, Meeke, Chelsea, Meldrum, Evonne, Mendez, Mijail, Mercer, Scott, Merino Perez, Josu, Mesa-Lampré, María-Pilar, Mighton, Shuna, Milne, Kirsty, Mohamed Yaseen, Muhammed, Moppett, Iain, Mora, Jesus, Morales-Zumel, Sira, Moreno Fenoll, Irene Blanca, Mousa, Adham, Murray, Alastair W., Murray, Elspeth V., Nair, Radhika, Neary, Fiona, Negri, Giacomo, Negus, Oliver, Newham-Harvey, Fiona, Ng, Nigel, Nightingale, Jess, Noor Mohamed Anver, Sumiya, Nunag, Perrico, O'Hare, Matthew, Ollivere, Ben, Ortés Gómez, Raquel, Owens, AnneMarie, Page, Siobhan, Palloni, Valentina, Panagiotopoulos, Andreas, Panagiotopoulos, Elias, Panesar, Paul, Papadopoulos, Antonios, Spyridon, Papagiannis, Pareja Sierra, Teresa, Park, Chang, Parwaiz, Hammad, Paterson-Byrne, Paul, Patton, Sam, Pearce, Jack, Porter, Marina, Pellegrino, Achille, Pèrez Cuellar, Arturo, Pezzella, Raffaele, Phadnis, Ashish, Pinder, Charlotte, Piper, Danielle, Powell-Bowns, Matilda, Prieto Martín, Rocío, Probert, Annabel, Ramesh, Ashwanth, Ramírez de Arellano, Manuel Vicente Mejía, Renton, Duncan, Rickman, Stephen, Robertson, Alastair, Roche Albero, Adrian, Rodrigo Verguizas, José Alberto, Rodríguez Couso, Myriam, Rooney, Joanna, Sáez-López, Pilar, Saldaña-Díaz, Andres, Santulli, Adriano, Sanz Pérez, Marta Isabel, Sarraf, Khaled M., Scarsbrook, Christine, Scott, Chloe E. H., Scott, Jennifer, Shah, Sachi, Sharaf, Sharief, Sharma, Sidharth, Shirley, Denise, Siano, Antonio, Simpson, James, Singh, Abhinav, Singh, Amit, Sinnett, Tim, Sisodia, Gurudatt, Smith, Philomena, Sophena Bert, Eugenia, Steel, Michael, Stewart, Avril, Stewart, Claire, Sugand, Kapil, Sullivan, Niall, Sweeting, Lauren, Symes, Michael, Tan, Dylan Jun Hao, Tancredi, Francesco, Tatani, Irini, Thomas, Philip, Thomson, Fraser, Toner, Niamh S., Tong, Anna, Toro, Antonio, Tosounidis, Theodoros, Tottas, Stylianos, Trinidad Leo, Andrea, Tucker, Damien, Vemulapalli, Krishna, Ventura Garces, Diego, Vernon, Olivia Katherine, Viveros Garcia, Juan Carlos, Ward, Alex, Ward, Kirsty, Watson, Kate, Weerasuriya, Thisara, Wickramanayake, Udara, Wilkinson, Hannah, Windley, Joseph, Wood, Janet, Wynell-Mayow, William, Zatti, Giovanni, Zeiton, Moez, Zurrón Lobato, Miriam, Hall, A, Clement, N, Ojeda-Thies, C, Maclullich, A, Toro, G, Johansen, A, White, T, Duckworth, A, Abdul-Jabar, H, Abu-Rajab, R, Abugarja, A, Adam, K, Aguado Hernández, H, Améstica Lazcano, G, Anderson, S, Ansar, M, Antrobus, J, Aragón Achig, E, Archunan, M, Arrieta Salinas, M, Ashford-Wilson, S, Assens Gibert, C, Athanasopoulou, K, Awadelkarim, M, Baird, S, Bajada, S, Balakrishnan, S, Balasubramanian, S, Ballantyne, J, Bárcena Goitiandia, L, Barkham, B, Barmpagianni, C, Barres-Carsi, M, Barrett, S, Baskaran, D, Bell, J, Bell, K, Bell, S, Bellelli, G, Benchimol, J, Boietti, B, Boswell, S, Braile, A, Brennan, C, Brent, L, Brooke, B, Bruno, G, Burahee, A, Burns, S, Calabrò, G, Campbell, L, Carabelli, G, Carnegie, C, Carretero Cristobal, G, Caruana, E, Cassinello Ogea, M, Castellanos Robles, J, Castillon, P, Chakrabarti, A, Cecere, A, Chen, P, Clarke, J, Collins, G, Corrales Cardenal, J, Corsi, M, Cózar Adelantado, G, Craxford, S, Crooks, M, Cuarental-García, J, Cuthbert, R, Dall, G, Daskalakis, I, De Cicco, A, Diana, D, Demaria, P, Dereix, J, Díaz Jiménez, J, Dinamarca Montecinos, J, Do Le, H, Donoso Coppa, J, Drosos, G, Duffy, A, East, J, Eastwood, D, Elbahari, H, Elias de Molins Peña, C, Elmamoun, M, Emmerson, B, Escobar Sánchez, D, Faimali, M, Farré-Mercadé, M, Farrow, L, Fayez, A, Fell, A, Fenner, C, Ferguson, D, Finlayson, L, Flores Gómez, A, Freeman, N, French, J, Gabardo Calvo, S, Gagliardo, N, Garcia Albiñana, J, García Cruz, G, García de Cortázar Antolín, U, García Virto, V, Gealy, S, Gil Caballero, S, Gill, M, González González, M, Gopireddy, R, Guntley, D, Gurung, B, Guzmán Rosales, G, Haddad, N, Hafeez, M, Haller, P, Halligan, E, Hardie, J, Hawker, I, Helal, A, Herrera Cruz, M, Herreros Ruiz-Valdepeñas, R, Horton, J, Howells, S, Howieson, A, Hughes, L, Hünicken Torrez, F, Hurtado Ortega, A, Huxley, P, Hamid, H, Ilahi, N, Iliadis, A, Inman, D, Jadhao, P, Jandoo, R, Jawad, L, Jayatilaka, M, Jenkins, P, Jeyapalan, R, Johnson, D, Johnston, A, Joseph, S, Kapoor, S, Karagiannidis, G, Karanam, K, Kattakayam, F, Konarski, A, Kontakis, G, Labrador Hernández, G, Lancaster, V, Landi, G, Le, B, Liew, I, Logishetty, K, Lopez Marquez, A, Lopez, J, Lum, J, Macpherson, G, Madan, S, Mahroof, S, Malik-Tabassum, K, Mallina, R, Maqsood, A, Marson, B, Martin Legorburo, M, Martin-Perez, E, Martínez Jiménez, T, Martinez Martin, J, Mayne, A, Mayor, A, Mcalinden, G, Mclean, L, Mcdonald, L, Mcintyre, J, Mckay, P, Mckean, G, Mcshane, H, Medici, A, Meeke, C, Meldrum, E, Mendez, M, Mercer, S, Merino Perez, J, Mesa-Lampré, M, Mighton, S, Milne, K, Mohamed Yaseen, M, Moppett, I, Mora, J, Morales-Zumel, S, Moreno Fenoll, I, Mousa, A, Murray, A, Murray, E, Nair, R, Neary, F, Negri, G, Negus, O, Newham-Harvey, F, Ng, N, Nightingale, J, Noor Mohamed Anver, S, Nunag, P, O'Hare, M, Ollivere, B, Ortés Gómez, R, Owens, A, Page, S, Palloni, V, Panagiotopoulos, A, Panagiotopoulos, E, Panesar, P, Papadopoulos, A, Spyridon, P, Pareja Sierra, T, Park, C, Parwaiz, H, Paterson-Byrne, P, Patton, S, Pearce, J, Porter, M, Pellegrino, A, Pèrez Cuellar, A, Pezzella, R, Phadnis, A, Pinder, C, Piper, D, Powell-Bowns, M, Prieto Martín, R, Probert, A, Ramesh, A, Ramírez de Arellano, M, Renton, D, Rickman, S, Robertson, A, Roche Albero, A, Rodrigo Verguizas, J, Rodríguez Couso, M, Rooney, J, Sáez-López, P, Saldaña-Díaz, A, Santulli, A, Sanz Pérez, M, Sarraf, K, Scarsbrook, C, Scott, C, Scott, J, Shah, S, Sharaf, S, Sharma, S, Shirley, D, Siano, A, Simpson, J, Singh, A, Sinnett, T, Sisodia, G, Smith, P, Sophena Bert, E, Steel, M, Stewart, A, Stewart, C, Sugand, K, Sullivan, N, Sweeting, L, Symes, M, Tan, D, Tancredi, F, Tatani, I, Thomas, P, Thomson, F, Toner, N, Tong, A, Toro, A, Tosounidis, T, Tottas, S, Trinidad Leo, A, Tucker, D, Vemulapalli, K, Ventura Garces, D, Vernon, O, Viveros Garcia, J, Ward, A, Ward, K, Watson, K, Weerasuriya, T, Wickramanayake, U, Wilkinson, H, Windley, J, Wood, J, Wynell-Mayow, W, Zatti, G, Zeiton, M, Zurrón Lobato, M, Hall, Andrew J., Clement, Nicholas D., Ojeda-Thies, Cristina, Maclullich, Alasdair MJ., Toro, Giuseppe, Johansen, Antony, White, Tim O., Duckworth, Andrew D., Abdul-Jabar, Hani, Abu-Rajab, Rashid, Abugarja, Ahmed, Adam, Karen, Aguado Hernández, Héctor J., Améstica Lazcano, Gedeón, Anderson, Sarah, Ansar, Mahmood, Antrobus, Jonathan, Aragón Achig, Esteban Javier, Archunan, Maheswaran, Arrieta Salinas, Mirentxu, Ashford-Wilson, Sarah, Assens Gibert, Cristina, Athanasopoulou, Katerina, Awadelkarim, Mohamed, Baird, Stuart, Bajada, Stefan, Balakrishnan, Shobana, Balasubramanian, Sathishkumar, Ballantyne, James A., Bárcena Goitiandia, Leopoldo, Barkham, Benjamin, Barmpagianni, Christina, Barres-Carsi, Mariano, Barrett, Sarah, Baskaran, Dinnish, Bell, Jean, Bell, Katrina, Bell, Stuart, Bellelli, Giuseppe, Benchimol, Javier Alberto, Boietti, Bruno Rafael, Boswell, Sally, Braile, Adriano, Brennan, Caitlin, Brent, Louise, Brooke, Ben, Bruno, Gaetano, Burahee, Abdu, Burns, Shirley, Calabrò, Giampiero, Campbell, Lucy, Carabelli, Guido Sebastian, Carnegie, Carol, Carretero Cristobal, Guillermo, Caruana, Ethan, Cassinello Ogea, M. a Concepción, Castellanos Robles, Juan, Castillon, Pablo, Chakrabarti, Anil, Cecere, Antonio Benedetto, Chen, Ping, Clarke, Jon V., Collins, Grace, Corrales Cardenal, Jorge E., Corsi, Maurizio, Cózar Adelantado, Gara María, Craxford, Simon, Crooks, Melissa, Cuarental-García, Javier, Cuthbert, Rory, Dall, Graham, Daskalakis, Ioanni, De Cicco, Annalisa, Diana, de la Fuente de Dio, Demaria, Pablo, Dereix, John, Díaz Jiménez, Julian, Dinamarca Montecinos, José Lui, Do Le, Ha Phuong, Donoso Coppa, Juan Pablo, Drosos, Georgio, Duffy, Andrew, East, Jamie, Eastwood, Deborah, Elbahari, Hassan, Elias de Molins Peña, Carmen, Elmamoun, Mamoun, Emmerson, Ben, Escobar Sánchez, Daniel, Faimali, Martina, Farré-Mercadé, Maria Victòria, Farrow, Luke, Fayez, Almari, Fell, Adam, Fenner, Christopher, Ferguson, David, Finlayson, Louise, Flores Gómez, Aldo, Freeman, Nichola, French, Jonathan, Gabardo Calvo, Santiago, Gagliardo, Nicola, Garcia Albiñana, Joan, García Cruz, Guillermo, García de Cortázar Antolín, Unai, García Virto, Virginia, Gealy, Sophie, Gil Caballero, Sandra Marcela, Gill, Moneet, González González, María Soledad, Gopireddy, Rajesh, Guntley, Diane, Gurung, Binay, Guzmán Rosales, Guadalupe, Haddad, Nedaa, Hafeez, Mahum, Haller, Petra, Halligan, Emer, Hardie, John, Hawker, Imogen, Helal, Amr, Herrera Cruz, Mariana, Herreros Ruiz-Valdepeñas, Ruben, Horton, Jame, Howells, Sean, Howieson, Alan, Hughes, Luke, Hünicken Torrez, Flavia Lorena, Hurtado Ortega, Ana, Huxley, Peter, Hamid, Hytham K. S., Ilahi, Nida, Iliadis, Alexi, Inman, Dominic, Jadhao, Piyush, Jandoo, Rajan, Jawad, Lucy, Jayatilaka, Malwattage Lara Tania, Jenkins, Paul J., Jeyapalan, Rathan, Johnson, David, Johnston, Andrew, Joseph, Sarah, Kapoor, Siddhant, Karagiannidis, Georgio, Karanam, Krishna Saga, Kattakayam, Freddy, Konarski, Alastair, Kontakis, Georgio, Labrador Hernández, Gregorio, Lancaster, Victoria, Landi, Giovanni, Le, Brian, Liew, Ignatiu, Logishetty, Kartik, Lopez Marquez, Andrew Carlomaria Daniel, Lopez, Judit, Lum, Joann, Macpherson, Gavin J., Madan, Suvira, Mahroof, Sabreena, Malik-Tabassum, Khalid, Mallina, Ravi, Maqsood, Afnan, Marson, Ben, Martin Legorburo, M José, Martin-Perez, Encarna, Martínez Jiménez, Tania, Martinez Martin, Javier, Mayne, Alistair, Mayor, Amy, Mcalinden, Gavan, Mclean, Lucille, Mcdonald, Lorna, Mcintyre, Joshua, Mckay, Pamela, Mckean, Greg, Mcshane, Heather, Medici, Antonio, Meeke, Chelsea, Meldrum, Evonne, Mendez, Mijail, Mercer, Scott, Merino Perez, Josu, Mesa-Lampré, María-Pilar, Mighton, Shuna, Milne, Kirsty, Mohamed Yaseen, Muhammed, Moppett, Iain, Mora, Jesu, Morales-Zumel, Sira, Moreno Fenoll, Irene Blanca, Mousa, Adham, Murray, Alastair W., Murray, Elspeth V., Nair, Radhika, Neary, Fiona, Negri, Giacomo, Negus, Oliver, Newham-Harvey, Fiona, Ng, Nigel, Nightingale, Je, Noor Mohamed Anver, Sumiya, Nunag, Perrico, O'Hare, Matthew, Ollivere, Ben, Ortés Gómez, Raquel, Owens, Annemarie, Page, Siobhan, Palloni, Valentina, Panagiotopoulos, Andrea, Panagiotopoulos, Elia, Panesar, Paul, Papadopoulos, Antonio, Spyridon, Papagianni, Pareja Sierra, Teresa, Park, Chang, Parwaiz, Hammad, Paterson-Byrne, Paul, Patton, Sam, Pearce, Jack, Porter, Marina, Pellegrino, Achille, Pèrez Cuellar, Arturo, Pezzella, Raffaele, Phadnis, Ashish, Pinder, Charlotte, Piper, Danielle, Powell-Bowns, Matilda, Prieto Martín, Rocío, Probert, Annabel, Ramesh, Ashwanth, Ramírez de Arellano, Manuel Vicente Mejía, Renton, Duncan, Rickman, Stephen, Robertson, Alastair, Roche Albero, Adrian, Rodrigo Verguizas, José Alberto, Rodríguez Couso, Myriam, Rooney, Joanna, Sáez-López, Pilar, Saldaña-Díaz, Andre, Santulli, Adriano, Sanz Pérez, Marta Isabel, Sarraf, Khaled M., Scarsbrook, Christine, Scott, Chloe E. H., Scott, Jennifer, Shah, Sachi, Sharaf, Sharief, Sharma, Sidharth, Shirley, Denise, Siano, Antonio, Simpson, Jame, Singh, Abhinav, Singh, Amit, Sinnett, Tim, Sisodia, Gurudatt, Smith, Philomena, Sophena Bert, Eugenia, Steel, Michael, Stewart, Avril, Stewart, Claire, Sugand, Kapil, Sullivan, Niall, Sweeting, Lauren, Symes, Michael, Tan, Dylan Jun Hao, Tancredi, Francesco, Tatani, Irini, Thomas, Philip, Thomson, Fraser, Toner, Niamh S., Tong, Anna, Toro, Antonio, Tosounidis, Theodoro, Tottas, Styliano, Trinidad Leo, Andrea, Tucker, Damien, Vemulapalli, Krishna, Ventura Garces, Diego, Vernon, Olivia Katherine, Viveros Garcia, Juan Carlo, Ward, Alex, Ward, Kirsty, Watson, Kate, Weerasuriya, Thisara, Wickramanayake, Udara, Wilkinson, Hannah, Windley, Joseph, Wood, Janet, Wynell-Mayow, William, Zatti, Giovanni, Zeiton, Moez, and Zurrón Lobato, Miriam

Subjects
Risk, Frailty, Communicable disease, Prognosi, COVID-19, Audit, Orthopaedic, Trauma, Hip fracture, Reporting standard, Meta-audit, Nosocomial, Infection, Geriatric, Outcome
Abstract

Aims: This international study aimed to assess: 1) the prevalence of preoperative and postoperative COVID-19 among patients with hip fracture, 2) the effect on 30-day mortality, and 3) clinical factors associated with the infection and with mortality in COVID-19-positive patients. Methods: A multicentre collaboration among 112 centres in 14 countries collected data on all patients presenting with a hip fracture between 1st March-31st May 2020. Demographics, residence, place of injury, presentation blood tests, Nottingham Hip Fracture Score, time to surgery, management, ASA grade, length of stay, COVID-19 and 30-day mortality status were recorded. Results: A total of 7090 patients were included, with a mean age of 82.2 (range 50–104) years and 4959 (69.9%) being female. Of 651 (9.2%) patients diagnosed with COVID-19, 225 (34.6%) were positive at presentation and 426 (65.4%) were positive postoperatively. Positive COVID-19 status was independently associated with male sex (odds ratio (OR) 1.38, p = 0.001), residential care (OR 2.15, p < 0.001), inpatient fall (OR 2.23, p = 0.003), cancer (OR 0.63, p = 0.009), ASA grades 4 (OR 1.59, p = 0.008) or 5 (OR 8.28, p < 0.001), and longer admission (OR 1.06 for each increasing day, p < 0.001). Patients with COVID-19 at any time had a significantly lower chance of 30-day survival versus those without COVID-19 (72.7% versus 92.6%, p < 0.001). COVID-19 was independently associated with an increased 30-day mortality risk (hazard ratio (HR) 2.83, p < 0.001). Increasing age (HR 1.03, p = 0.028), male sex (HR 2.35, p < 0.001), renal disease (HR 1.53, p = 0.017), and pulmonary disease (HR 1.45, p = 0.039) were independently associated with a higher 30-day mortality risk in patients with COVID-19 when adjusting for confounders. Conclusion: The prevalence of COVID-19 in hip fracture patients during the first wave of the pandemic was 9%, and was independently associated with a three-fold increased 30-day mortality risk. Among COVID-19-positive patients, those who were older, male, with renal or pulmonary disease had a significantly higher 30-day mortality risk.

Published
2022

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