Coronary Artery Bypass Grafting complicated by post-operative coronavirus infection - two similar presentations with dissimilar outcomes.

Patients diagnosed with COVID-19 infection undergoing surgical procedures have been reported to have increased post-operative complications and mortality. These findings are important when considering cardiac surgical procedures, specifically coronary artery bypass grafting (CABG) during this pandemic, since the Society of Thoracic Surgeons (STS) describes most of these operations as 'urgent'. In addition, the majority of cardiac surgical patients are at increased risk of infection and death with COVID-19, as they are frequently of old age, obese, hypertensive, and diabetic, with severe cardiac or pulmonary diseases. This case series describes the clinical course following a CABG procedure in two patients that went on to develop COVID-19 infection post-operatively. We aim to illustrate the similarities in clinical presentation, but differences in eventual outcomes for both patients and hypothesize the reasons for the differences.

Outcomes and Risk Factors for Cardiovascular Events in Hospitalized COVID-19 Patients.

OBJECTIVE: To analyze outcomes and risk factors of cardiovascular events in a metropolitan coronavirus disease 2019 (COVID-19) database, and to perform a subgroup analysis in African American populations to determine whether outcomes and risk factors are influenced by race. DESIGN: Retrospective cohort analysis from March 9, 2020 to June 20, 2020. SETTING: Population-based study in Louisville, KY, USA. PARTICIPANTS: Seven hundred adult inpatients hospitalized with COVID-19. INTERVENTIONS: N/A. MEASUREMENTS AND MAIN RESULTS: This cohort consisted of 126 patients (18%) with cardiovascular events and 574 patients without cardiovascular events. Patients with cardiovascular events had a much higher mortality rate than those without cardiovascular events (45.2% v 8.7%, p < 0.001). There was no difference between African American and white patients regarding mortality (43.9% v 46.3%, p = 1) and length of stay for survivors (11 days v 9.5 days, p = 0.301). Multiple logistics regression analysis suggested that male, race, lower SaO2/FIO2, higher serum potassium, lower serum albumin, and number of cardiovascular comorbidities were highly associated with the occurrence of cardiovascular events in COVID-19 patients. Lower serum albumin and neoplastic and/or immune-compromised diseases were highly associated with cardiovascular events for African American COVID-19 patients. SaO2/FIO2 ratio and cardiovascular comorbidity count were significantly associated with cardiovascular events in white patients. CONCLUSIONS: Cardiovascular events were prevalent and associated with worse outcomes in hospitalized patients with COVID-19. Outcomes of cardiovascular events in African American and white COVID-19 patients were similar after propensity score matching analysis. There were common and unique risk factors for cardiovascular events in African American COVID-19 patients when compared with white patients.