Peri-operative SARS-CoV-2 infection increases postoperative mortality. The aim of this study was to determine the optimal duration of planned delay before surgery in patients who have had SARS-CoV-2 infection. This international, multicentre, prospective cohort study included patients undergoing elective or emergency surgery during October 2020. Surgical patients with pre-operative SARS-CoV-2 infection were compared with those without previous SARS-CoV-2 infection. The primary outcome measure was 30-day postoperative mortality. Logistic regression models were used to calculate adjusted 30-day mortality rates stratified by time from diagnosis of SARS-CoV-2 infection to surgery. Among 140,231 patients (116 countries), 3127 patients (2.2%) had a pre-operative SARS-CoV-2 diagnosis. Adjusted 30-day mortality in patients without SARS-CoV-2 infection was 1.5% (95%CI 1.4-1.5). In patients with a pre-operative SARS-CoV-2 diagnosis, mortality was increased in patients having surgery within 0-2 weeks, 3-4 weeks and 5-6 weeks of the diagnosis (odds ratio (95%CI) 4.1 (3.3-4.8), 3.9 (2.6-5.1) and 3.6 (2.0-5.2), respectively). Surgery performed ≥ 7 weeks after SARS-CoV-2 diagnosis was associated with a similar mortality risk to baseline (odds ratio (95%CI) 1.5 (0.9-2.1)). After a ≥ 7 week delay in undertaking surgery following SARS-CoV-2 infection, patients with ongoing symptoms had a higher mortality than patients whose symptoms had resolved or who had been asymptomatic (6.0% (95%CI 3.2-8.7) vs. 2.4% (95%CI 1.4-3.4) vs. 1.3% (95%CI 0.6-2.0), respectively). Where possible, surgery should be delayed for at least 7 weeks following SARS-CoV-2 infection. Patients with ongoing symptoms ≥ 7 weeks from diagnosis may benefit from further delay.

IMPORTANCE Early diagnosis of coronavirus disease 2019 (COVID-19) may help control the diffusion of the disease into the population. OBJECTIVE To investigate the presence of sinonasal manifestations at the onset of COVID-19 to achieve an earlier diagnosis. DESIGN, SETTING, AND PARTICIPANTS This retrospective telephone survey study investigated patients diagnosed with COVID-19 from March 5 to March 23, 2020, who were hospitalized or discharged from a single referral center. Patients who were unable to answer (intubated, receiving noninvasive ventilation, or deceased) or unreachable by telephone were excluded. Of 359 consecutive patients, 204 fulfilled the inclusion criteria; 76 were unable to answer, 76 were unreachable by telephone, and 3 refused. EXPOSURES Sinonasal manifestations reported before COVID-19 diagnosis were studied with a validated questionnaire: Italian Sino-Nasal Outcome Test 22 (I-SNOT-22). If reduction of taste and/or smell was documented by item 5 of the I-SNOT-22, further inquiries were made to score them separately on a scale from 0 to 5, with 0 indicating no problem and 5 indicating problem as bad as it can be. MAIN OUTCOMES AND MEASURES The prevalence of sinonasal manifestations preceding COVID-19 diagnosis. RESULTS Among the 204 patients enrolled (110 [53.9%] male; mean [SD] age, 52.6 [14.4] years), the median I-SNOT-22 total score was 21 (range, 0-73). I-SNOT-22 identified 116 patients (56.9%) with reduction of taste and/or smell, 113 (55.4%) with taste reduction (median score, 5; range, 2-5), and 85 (41.7%) with smell reduction (median score, 5; range, 1-5). Eighty-two patients (40.2%) reported both. Severe reduction of taste was present in 81 patients (39.7%), and severe reduction of smell was present in 72 patients (35.3%). Only 12 patients (14.8%) with severe taste reduction and 12 patients (16.7%) with severe smell reduction reported severe nasal obstruction. Severe reduction of taste and smell was more prevalent in female vs male patients (odds ratios, 3.16 [95% CI, 1.76-5.67] vs 2.58 [95% CI, 1.43-4.65]) and middle-aged vs younger patients (effect sizes, 0.50 [95% CI, 0.21-0.78] vs 0.85 [95% CI, 0.55-1.15]). No significant association was observed between smoking habits and severe reduction of taste (odds ratio, 0.95; 95% CI, 0.53-1.71) and/or smell (odds ratio, 0.65; 95% CI, 0.35-1.21). CONCLUSIONS AND RELEVANCE The findings of this telephone survey study suggest that reduction of taste and/or smell may be a frequent and early symptom of COVID-19. Nasal obstruction was not commonly present at the onset of the disease in this study. The general practitioner may play a pivotal role in identifying potential COVID-19 in patients at an early stage if taste and/or smell alterations manifest and in suggesting quarantine before confirmation or exclusion of the diagnosis.

SARS-CoV-2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri-operative or prior SARS-CoV-2 were at further increased risk of venous thromboembolism. We conducted a planned sub-study and analysis from an international, multicentre, prospective cohort study of elective and emergency patients undergoing surgery during October 2020. Patients from all surgical specialties were included. The primary outcome measure was venous thromboembolism (pulmonary embolism or deep vein thrombosis) within 30 days of surgery. SARS-CoV-2 diagnosis was defined as peri-operative (7 days before to 30 days after surgery); recent (1-6 weeks before surgery); previous (≥7 weeks before surgery); or none. Information on prophylaxis regimens or pre-operative anti-coagulation for baseline comorbidities was not available. Postoperative venous thromboembolism rate was 0.5% (666/123,591) in patients without SARS-CoV-2; 2.2% (50/2317) in patients with peri-operative SARS-CoV-2; 1.6% (15/953) in patients with recent SARS-CoV-2; and 1.0% (11/1148) in patients with previous SARS-CoV-2. After adjustment for confounding factors, patients with peri-operative (adjusted odds ratio 1.5 (95%CI 1.1-2.0)) and recent SARS-CoV-2 (1.9 (95%CI 1.2-3.3)) remained at higher risk of venous thromboembolism, with a borderline finding in previous SARS-CoV-2 (1.7 (95%CI 0.9-3.0)). Overall, venous thromboembolism was independently associated with 30-day mortality ). In patients with SARS-CoV-2, mortality without venous thromboembolism was 7.4% (319/4342) and with venous thromboembolism was 40.8% (31/76). Patients undergoing surgery with peri-operative or recent SARS-CoV-2 appear to be at increased risk of postoperative venous thromboembolism compared with patients with no history of SARS-CoV-2 infection. Optimal venous thromboembolism prophylaxis and treatment are unknown in this cohort of patients, and these data should be interpreted accordingly.

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