Impact of COVID-19 on coronary artery surgery: Hard lessons learned

Nonelective coronary artery bypass graft outcomes are adversely impacted by Coronavirus disease 2019 infection, but not altered processes of care: A National COVID Cohort Collaborative and National Surgery Quality Improvement Program analysis

Objective

The effects of Coronavirus disease 2019 (COVID-19) infection and altered processes of care on nonelective coronary artery bypass grafting (CABG) outcomes remain unknown. We hypothesized that patients with COVID-19 infection would have longer hospital lengths of stay and greater mortality compared with COVID-negative patients, but that these outcomes would not differ between COVID-negative and pre-COVID controls.

Methods

The National COVID Cohort Collaborative 2020-2022 was queried for adult patients undergoing CABG. Patients were divided into COVID-negative, COVID-active, and COVID-convalescent groups. Pre-COVID control patients were drawn from the National Surgical Quality Improvement Program database. Adjusted analysis of the 3 COVID groups was performed via generalized linear models.

Results

A total of 17,293 patients underwent nonelective CABG, including 16,252 COVID-negative, 127 COVID-active, 367 COVID-convalescent, and 2254 pre-COVID patients. Compared to pre-COVID patients, COVID-negative patients had no difference in mortality, whereas COVID-active patients experienced increased mortality. Mortality and pneumonia were higher in COVID-active patients compared to COVID-negative and COVID-convalescent patients. Adjusted analysis demonstrated that COVID-active patients had higher in-hospital mortality, 30- and 90-day mortality, and pneumonia compared to COVID-negative patients. COVID-convalescent patients had a shorter length of stay but a higher rate of renal impairment.

Conclusions

Traditional care processes were altered during the COVID-19 pandemic. Our data show that nonelective CABG in patients with active COVID-19 is associated with significantly increased rates of mortality and pneumonia. The equivalent mortality in COVID-negative and pre-COVID patients suggests that pandemic-associated changes in processes of care did not impact CABG outcomes. Additional research into optimal timing of CABG after COVID infection is warranted.

The Impact of the COVID-19 Pandemic on Surgical Activities: A Single-Center Experience and Literature Review

Aim The aim of this article is to investigate the effect of the coronavirus disease 2019 (COVID-19) pandemic on our surgical department, which is situated in Athens, Greece, as well as to review published literature on the COVID-19 pandemic's impact on surgical activities in our department.  Material and methods We retrospectively reviewed the surgical procedures that were performed in the surgical department of a tertiary University hospital in Athens, Greece, before and during the pandemic. Furthermore, we performed a literature review evaluating articles on surgical activity and COVID-19 published from the beginning of the pandemic up until the January of 2022 on the PubMed database.  Results In total, 894 patients were included in the study. Of those, 264 (29.5%) underwent surgery during the control period and 630 (70.5%) in the pandemic period. Overall, we performed 20.5% fewer surgeries in the post-sanitary period. In particular, elective surgeries decreased on average by 23.9%, emergency procedures decreased by 8.9%, and oncology surgeries increased by an average of 6.4% after the year 2020. Concerning the review of literature, 51 studies were selected for this review. According to them, the main effect of the pandemic on the surgical sector was reflected in the reduction of total surgeries, mainly due to the postponement of elective surgical procedures, which showed a median reduction of 54% compared to the pre-COVID-19 period. A smaller decrease was observed in the number of emergency and oncological surgeries. Conclusions Reduced surgical activity during the pandemic, due to the health measures imposed, requires courageous corrective interventions to avoid its adverse effects, such as disease progression, increased treatment costs, reduced quality of life, and ultimately the survival of the patients.

Coronary Heart Disease and Coronavirus Disease 2019: Pathogenesis, Epidemiology, Association with Myocardial Revascularization

BACKGROUND: Coronavirus disease 2019 (COVID-19) causes a hypercoagulable state with a high incidence of thrombotic complications. Patients with a history of myocardial revascularization have more severe complications due to COVID-19. Coronary stent thrombosis has become significantly more common during the COVID-19 pandemic. AIM: The aim of our study is to analyze scientific information on the risks of stent thrombosis in patients who underwent COVID-19. METHODS: A search was made for scientific publications in evidence-based medicine databases and web resources: PubMed, MEDLINE, UpToDate, TripDatabase, ResearchGate, and Google Scholar. Inclusion criteria were: (1) Observational studies or case series involving patients with a confirmed diagnosis of COVID-19 and myocardial infarction requiring myocardial revascularization; (2) the division of the population into survivors and non-survivors; and (3) data on the presence of the previous myocardial revascularization. Exclusion criteria: Case description and editorials/bulletins. In all articles selected for further analysis, 49 sources were considered that met the inclusion criteria and excluded duplication or repetition of information. RESULTS: Coronavirus infection has contributed to the change in the course of myocardial infarction in patients undergoing myocardial revascularization. The incidence of stent thrombosis has a positive correlation with the severity of the coronavirus infection. The previous myocardial revascularization procedures significantly increase the risk of mortality in patients with coronavirus infection. This is especially actual for elderly patients. CONCLUSION: One of the most vulnerable groups is elderly patients who have undergone myocardial revascularization after myocardial infarction in the past and have concomitant diseases. An analysis of scientific publications has shown that further larger-scale clinical studies are needed to confirm the hypothesis about the negative impact of coronavirus infection on stent thrombosis in patients who have undergone COVID-19.