Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

Clinical impact of routine somatostatin analogues administration after pancreatoduodenectomy: a case-matched comparison according to fistula risk score, ASA and surgical technique

Background and Objectives: The routine use of somatostatin in prevention of POPF is controversial and several works have shown no beneficial effects in this setting. The aim of this study is to compare the incidence of fistula in patients who underwent PD with the same pancreatojejunostomy technique, with and without the postoperative use of somatostatin. Materials and Methods: A total of 493 pancreatic resections were performed at the General Surgery Unit, University of Pisa between October 2008 and October 2018. Among these, 259 were PD of which 152 were carried out with a personal, modified invagination pancreatojejunostomy technique (mPJ), introduced on November 2010. Somatostatin was routinely administered after PD with mPJ technique (mPJ-PD) between November 2010 and December 2016, while from January 2017 to October 2018, 52 consecutive mPJ-PD without somatostatin (WS) were performed. The WS-group was retrospectively compared with a control (C) group of mPJ in which somatostatin was routinely used. The two groups were matched using a one-to-one case-control design, according to Fistula Risk Score (FRS) and American Society of Anesthesiologists’ (ASA) score. The post operative outcomes of the two groups were compared, with a particular attention to POPF. Patients data were retrieved from the Institutional prospectively collected dedicated database. Results: The study sample consists in 104 patients (52 WS-group versus 52 C-group). In both groups the FRS was graded as following: FRS=0, 3.8%; FRS=1-2, 19.2%; FRS=3-6, 61.5%; FRS=7-10, 15.4%. No difference was found in term of operative time (430.38 ±79.18 min in C-group versus 413.17 ±72.28 min in WS-group, p=0.8) and length of hospital stay (18.6 days in c-group versus 19.1 days in ws-group, p=0.7). In the WS-group, POPF was registered in 12 patients: 9 were biochemical leak (BL) and 3 were Grade B fistulas, whereas in the C-group 15 patients developed POPF (11 BL, 3 Grade B and 1 Grade C), without any significant difference between the two groups (p=0.7). No difference was documented for 30-days mortality (2 cases in WS-group versus 3 cases in B-group; p=0.6). Conclusion: The development of POPF after PD is due to multiple factors including pancreatic texture, pancreatic duct diameter and surgical technique and is not significantly influenced by the post-operative administration of somatostatin. Our results do not support the routinely use of somatostatin for the prevention of POPF after PD

Where Brain, Body and World Collide

The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y| < 0.8) in the transverse momentum range 1 < pt < 8 Gev/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy sqrt{s} = 7 TeV using an integrated luminosity of 2.2 nb^{-1}. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark-antiquark pairs

Effects of pre‐operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study

We aimed to determine the impact of pre-operative isolation on postoperative pulmonary complications after elective surgery during the global SARS-CoV-2 pandemic. We performed an international prospective cohort study including patients undergoing elective surgery in October 2020. Isolation was defined as the period before surgery during which patients did not leave their house or receive visitors from outside their household. The primary outcome was postoperative pulmonary complications, adjusted in multivariable models for measured confounders. Pre-defined sub-group analyses were performed for the primary outcome. A total of 96,454 patients from 114 countries were included and overall, 26,948 (27.9%) patients isolated before surgery. Postoperative pulmonary complications were recorded in 1947 (2.0%) patients of which 227 (11.7%) were associated with SARS-CoV-2 infection. Patients who isolated pre-operatively were older, had more respiratory comorbidities and were more commonly from areas of high SARS-CoV-2 incidence and high-income countries. Although the overall rates of postoperative pulmonary complications were similar in those that isolated and those that did not (2.1% vs 2.0%, respectively), isolation was associated with higher rates of postoperative pulmonary complications after adjustment (adjusted OR 1.20, 95%CI 1.05-1.36, p = 0.005). Sensitivity analyses revealed no further differences when patients were categorised by: pre-operative testing; use of COVID-19-free pathways; or community SARS-CoV-2 prevalence. The rate of postoperative pulmonary complications increased with periods of isolation longer than 3 days, with an OR (95%CI) at 4-7 days or >= 8 days of 1.25 (1.04-1.48), p = 0.015 and 1.31 (1.11-1.55), p = 0.001, respectively. Isolation before elective surgery might be associated with a small but clinically important increased risk of postoperative pulmonary complications. Longer periods of isolation showed no reduction in the risk of postoperative pulmonary complications. These findings have significant implications for global provision of elective surgical care