COVID-19 in the perioperative period of cardiovascular surgery: the brazilian experience

Abstract Introduction: We investigated the clinical course and outcomes of patients submitted to cardiovascular surgery in Brazil and who had developed symptoms/signs of coronavirus disease 2019 (COVID-19) in the perioperative period. Methods: A retrospective multicenter study including 104 patients who were allocated in three groups according to time of positive real time reverse transcriptase-polymerase chain reaction (RT-PCR) for the SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2): group 1, patients who underwent cardiac surgery > 10 days after positive RT-PCR; group 2, patients with a positive RT-PCR within 10 days before or after surgery; group 3, patients who presented positive RT-PCR > 10 days after surgery. The primary outcome was mortality and secondary outcomes were postoperative complications, intensive care unit (ICU) length of stay, and postoperative days of hospitalization. Results: The three groups were similar with respect to age, the European System of Cardiac Operative Risk Evaluation score, and comorbidities, except hypertension. Postoperative complications and death were significantly higher in groups 2 and 3 than in group 1, and no significant difference between groups 2 and 3 was seen. Group 2 showed a high prevalence of surgery performed as an urgent procedure. Although no significant differences were observed in ICU length of stay, total postoperative hospitalization time was significantly higher in group 3 than in groups 1 and 2. Conclusion: COVID-19 affecting the postoperative period of patients who underwent cardiovascular surgery is associated with a higher rate of morbidity and mortality. Delaying procedures in RT-PCR-positive patients may help reduce risks of perioperative complications and death.

Uso da realimentação pós-operatória ultra precoce e seu impacto na redução de fluidos endovenosos / Ultra-early postoperative feeding and its impact on reducing endovenous fluids

RESUMO Objetivo: investigar em uma série de casos de pacientes submetidos a operações de médio porte em cirurgia geral, o uso da conduta de realimentação pós-operatória "ultra precoce"(dieta oral líquida oferecida na recuperação pós-anestésica), avaliando-se o volume de fluidos endovenosos recebidos no pós-operatório por estes pacientes, assim como a ocorrência de complicações e o tempo de internação hospitalar. Métodos: estudo prospectivo, observacional. Avaliou-se a aderência à rotina de realimentação "ultra precoce", abreviação do jejum pré-operatório, volume de hidratação venosa perioperatório, tempo de internação e morbidade operatória. Resultados: um total de 154 pacientes com média da idade de 46±15 anos, foram acompanhados. Realimentação "ultra precoce" foi realizada em 144 casos (93,5%). Pacientes que não receberam realimentação "ultra precoce" receberam volume significativamente maior de fluidos endovenosos no pós-operatório do que pacientes realimentados de maneira "ultra precoce" (500ml versus 200ml, p=0,018). O tempo de internação foi de 2,4±2,79 dias (realimentação convencional) versus 1,45±1,83 dias (realimentação "ultra precoce"), sem diferença estatística (p=0,133).Não houve diferença no percentual de complicações gerais (p=0,291), vômitos (p=0,696) ou infecção do sítio cirúrgico (p=0,534). Conclusão: a realimentação "ultra precoce" apresentou-se como uma conduta de elevada aderência em operações de médio porte em Cirurgia Geral nesta série de casos e, esteve relacionada a infusão de volume significativamente menor de fluidos endovenosos no pós-operatório, com índices baixos de complicações e sem impacto no tempo de internação.

ABSTRACT Objective: To investigate the use of "ultra-early" postoperative feeding (oral liquid diet offered in the post-anesthetic recovery room) in patients undergoing common general surgical procedures and to assess the volume of intravenous fluids, as well as the rate of complications and the length of hospital stay. Methods: Prospective, observational study, which assessed the compliance with the "ultra-early" feeding, the reduction of preoperative fasting time, the perioperative venous hydration volume, the length of stay and the operative morbidity. Results: 154 patients with a mean age of 46 ± 15 years were followed. "Ultra-early" feeding was performed in 144 cases (93.5%). Patients who did not receive the "ultra-early" feeding received a significantly greater volume of postoperative intravenous fluids (500mL versus 200mL, p = 0.018). The length of stay was 2.4 ± 2.79 days (conventional feeding) versus 1.45 ± 1.83 days ("ultra-early" feeding), with no statistical difference (p = 0.133). There was no difference in the percentage of general complications (p = 0.291), vomiting (p = 0.696) or surgical infection (p = 0.534). Conclusion: "Ultra-early" feeding had a high adherence by patients undergoing common general surgical procedures, and it was related to decreased infusion of postoperative fluids. Complication rates and the length of stay were similar between groups.

Benefits of fasting abbreviation with carbohydrates and omega-3 infusion during cabg: a double-blind controlled randomized trial

Abstract Objective: To assess postoperative clinical data considering the association of preoperative fasting with carbohydrate (CHO) loading and intraoperative infusion of omega-3 polyunsaturated fatty acids (ω-3 PUFA). Methods: 57 patients undergoing coronary artery bypass grafting (CABG) were randomly assigned to receive 12.5% maltodextrin (200 mL, 2 h before anesthesia), (CHO, n=14); water (200 mL, 2 h before anesthesia), (control, n=14); 12.5% maltodextrin (200 mL, 2 h before anesthesia) plus intraoperative infusion of ω-3 PUFA (0.2 g/kg), (CHO+W3, n=15); or water (200 mL, 2 h before anesthesia) plus intraoperative infusion of ω-3 PUFA (0.2 g/kg), (W3, n=14). The need for vasoactive drugs was analyzed, in addition to postoperative inflammation and metabolic control. Results: There were two deaths (3.5%). Patients in CHO groups presented a lower incidence of hospital infection (RR=0.29, 95% CI 0.09-0.94; P=0.023), needed fewer vasoactive drugs during surgery and ICU stay (P<0.05); and had better blood glucose levels in the first six hours of recovery (P=0.015), requiring less exogenous insulin (P=0.018). Incidence of postoperative atrial fibrillation (POAF) varied significantly among groups (P=0.009). Subjects who receive ω-3 PUFA groups had fewer occurrences of POAF (RR=4.83, 95% CI 1.56-15.02; P=0.001). Patients in the W3 group had lower ultrasensitive-CRP levels at 36 h postoperatively (P=0.008). Interleukin-10 levels varied among groups (P=0.013), with the highest levels observed in the postoperative of patients who received intraoperative infusion of ω-3 PUFA (P=0.049). Conclusion: Fasting abbreviation with carbohydrate loading and intraoperative infusion of ω-3 PUFA is safe and supports faster postoperative recovery in patients undergoing on-pump CABG.