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Preoperative nasopharyngeal swab testing and postoperative pulmonary complications in patients undergoing elective surgery during the SARS-CoV-2 pandemic

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Abstract Background Surgical services are preparing to scale up in areas affected by COVID-19. This study aimed to evaluate the association between preoperative SARS-CoV-2 testing and postoperative pulmonary complications in patients undergoing elective cancer surgery. Methods This international cohort study included adult patients undergoing elective surgery for cancer in areas affected by SARS-CoV-2 up to 19 April 2020. Patients suspected of SARS-CoV-2 infection before operation were excluded. The primary outcome measure was postoperative pulmonary complications at 30 days after surgery. Preoperative testing strategies were adjusted for confounding using mixed-effects models. Results Of 8784 patients (432 hospitals, 53 countries), 2303 patients (26.2 per cent) underwent preoperative testing: 1458 (16.6 per cent) had a swab test, 521 (5.9 per cent) CT only, and 324 (3.7 per cent) swab and CT. Pulmonary complications occurred in 3.9 per cent, whereas SARS-CoV-2 infection was confirmed in 2.6 per cent. After risk adjustment, having at least one negative preoperative nasopharyngeal swab test (adjusted odds ratio 0.68, 95 per cent confidence interval 0.68 to 0.98; P = 0.040) was associated with a lower rate of pulmonary complications. Swab testing was beneficial before major surgery and in areas with a high 14-day SARS-CoV-2 case notification rate, but not before minor surgery or in low-risk areas. To prevent one pulmonary complication, the number needed to swab test before major or minor surgery was 18 and 48 respectively in high-risk areas, and 73 and 387 in low-risk areas. Conclusion Preoperative nasopharyngeal swab testing was beneficial before major surgery and in high SARS-CoV-2 risk areas. There was no proven benefit of swab testing before minor surgery in low-risk areas.
Oxford University Press (OUP)
James C Glasbey Omar Omar Dmitri Nepogodiev Ana Minaya-Bravo Brittany Kay Bankhead-Kendall Marco Fiore Kaori Futaba Alodia Gabre-Kidan Rohan R Gujjuri Arda Isik Haytham M A Kaafarani Sivesh K Kamarajah Elizabeth Li Markus W Löffler Kenneth A McLean Oumaima Outani Faustin Ntirenganya Sohei Satoi Richard Shaw Joana F F Simoes Grant D Stewart Stephen Tabiri Isobel M Trout Aneel A Bhangu James C Glasbey Omar Omar Aneel A Bhangu Kwabena Siaw-Acheampong Ruth A Benson Edward Bywater Daoud Chaudhry Brett E Dawson Jonathan P Evans James C Glasbey Rohan R Gujjuri Emily Heritage Conor S Jones Sivesh K Kamarajah Chetan Khatri Rachel A Khaw James M Keatley Andrew Knight Samuel Lawday Elizabeth Li Harvinder S Mann Ella J Marson Kenneth A McLean Siobhan C Mckay Emily C Mills Dmitri Nepogodiev Gianluca Pellino Maria Picciochi Elliott H Taylor Abhinav Tiwari Joana F F Simoes Isobel M Trout Mary L Venn Richard J W Wilkin Aneel Bhangu James C Glasbey Neil J Smart Ana Minaya-Bravo Jonathan P Evans Gaetano Gallo Susan Moug Francesco Pata Peter Pockney Salomone Di Saverio Abigail Vallance Dale Vimalchandran Ewen A Griffiths Sivesh K Kamarajah Richard P T Evans Philip Townend Keith Roberts Siobhan McKay John Isaac Sohei Satoi John Edwards Aman S Coonar Adrian Marchbank Edward J Caruana Georgia R Layton Akshay Patel Alessandro Brunelli Samuel Ford Anant Desai Alessandro Gronchi Marco Fiore Max Almond Fabio Tirotta Sinziana Dumitra Angelos Kolias Stephen J Price Daniel M Fountain Michael D Jenkinson Peter Hutchinson Hani J Marcus Rory J Piper Laura Lippa Franco Servadei Ignatius Esene Christian Freyschlag Iuri Neville Gail Rosseau Karl Schaller Andreas K Demetriades Faith Robertson Alex Alamri Richard Shaw Andrew G Schache Stuart C Winter Michael Ho Paul Nankivell Juan Rey Biel Martin Batstone Ian Ganly Raghavan Vidya Alex Wilkins Jagdeep K Singh Dinesh Thekinkattil Sudha Sundar Christina Fotopoulou Elaine Leung Tabassum Khan Luis Chiva Jalid Sehouli Anna Fagotti Paul Cohen Murat Gutelkin Rahel Ghebre Thomas Konney Rene Pareja Rob Bristow Sean Dowdy Shylasree T S Rajkumar Joe Ng Keiiji Fujiwara Grant D Stewart Benjamin Lamb Krishna Narahari Alan McNeill Alexandra Colquhoun John McGrath Steve Bromage Ravi Barod Veeru Kasivisvanathan Tobias Klatte Joana F F Simoes Tom E F Abbott Sadi Abukhalaf Michel Adamina Adesoji O Ademuyiwa Arnav Agarwal Murat Akkulak Ehab Alameer Derek Alderson Felix Alakaloko Markus Albertsmeiers Osaid Alser Muhammad Alshaar Sattar Alshryda Alexis P Arnaud Knut Magne Augestad Faris Ayasra José Azevedo Brittany K Bankhead-Kendall Emma Barlow David Beard Ruth A Benson Ruth Blanco-Colino Amanpreet Brar Ana Minaya-Bravo Kerry A Breen Chris Bretherton Igor Lima Buarque Joshua Burke Edward J Caruana Mohammad Chaar Sohini Chakrabortee Peter Christensen Daniel Cox Moises Cukier Miguel F Cunha Giana H Davidson Anant Desai Salomone Di Saverio Thomas M Drake John G Edwards Muhammed Elhadi Sameh Emile Shebani Farik Marco Fiore J Edward Fitzgerald Samuel Ford Tatiana Garmanova Gaetano Gallo Dhruv Ghosh Gustavo Mendonça Ataíde Gomes Gustavo Grecinos Ewen A Griffiths Madalegna Gründl Constantine Halkias Ewen M Harrison Intisar Hisham Peter J Hutchinson Shelley Hwang Arda Isik Michael D Jenkinson Pascal Jonker Haytham M A Kaafarani Debby Keller Angelos Kolias Schelto Kruijff Ismail Lawani Hans Lederhuber Sezai Leventoglu Andrey Litvin Andrew Loehrer Markus W Löffler Maria Aguilera Lorena Maria Marta Modolo Piotr Major Janet Martin Hassan N Mashbari Dennis Mazingi Symeon Metallidis Ana Minaya-Bravo Helen M Mohan Rachel Moore David Moszkowicz Susan Moug Joshua S Ng-Kamstra Mayaba Maimbo Ionut Negoi Milagros Niquen Faustin Ntirenganya Maricarmen Olivos Kacimi Oussama Oumaima Outani Marie Dione Parreno-Sacdalanm Francesco Pata Carlos Jose Perez Rivera Thomas D Pinkney Willemijn van der Plas Peter Pockney Ahmad Qureshi Dejan Radenkovic Antonio Ramos-De la Medina Keith Roberts April C Roslani Martin Rutegård Juan José Segura-Sampedro Irène Santos Sohei Satoi Raza Sayyed Andrew Schache Andreas A Schnitzbauer Justina O. 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Title: Preoperative nasopharyngeal swab testing and postoperative pulmonary complications in patients undergoing elective surgery during the SARS-CoV-2 pandemic
Description:
Abstract Background Surgical services are preparing to scale up in areas affected by COVID-19.
This study aimed to evaluate the association between preoperative SARS-CoV-2 testing and postoperative pulmonary complications in patients undergoing elective cancer surgery.
Methods This international cohort study included adult patients undergoing elective surgery for cancer in areas affected by SARS-CoV-2 up to 19 April 2020.
Patients suspected of SARS-CoV-2 infection before operation were excluded.
The primary outcome measure was postoperative pulmonary complications at 30 days after surgery.
Preoperative testing strategies were adjusted for confounding using mixed-effects models.
Results Of 8784 patients (432 hospitals, 53 countries), 2303 patients (26.
2 per cent) underwent preoperative testing: 1458 (16.
6 per cent) had a swab test, 521 (5.
9 per cent) CT only, and 324 (3.
7 per cent) swab and CT.
Pulmonary complications occurred in 3.
9 per cent, whereas SARS-CoV-2 infection was confirmed in 2.
6 per cent.
After risk adjustment, having at least one negative preoperative nasopharyngeal swab test (adjusted odds ratio 0.
68, 95 per cent confidence interval 0.
68 to 0.
98; P = 0.
040) was associated with a lower rate of pulmonary complications.
Swab testing was beneficial before major surgery and in areas with a high 14-day SARS-CoV-2 case notification rate, but not before minor surgery or in low-risk areas.
To prevent one pulmonary complication, the number needed to swab test before major or minor surgery was 18 and 48 respectively in high-risk areas, and 73 and 387 in low-risk areas.
Conclusion Preoperative nasopharyngeal swab testing was beneficial before major surgery and in high SARS-CoV-2 risk areas.
There was no proven benefit of swab testing before minor surgery in low-risk areas.

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