Abstract
BACKGROUND: Acute type A aortic dissection (ATAAD) is a deadly form of acute aortic syndrome which necessitates emergency surgical repair. Coronavirus disease-19 (COVID-19) pandemic has caused a significant impact on surgery globally. The influence of the COVID-19 pandemic on ATAAD patients undergoing surgical repair remains undetermined. METHODS: We conducted a systematic review and meta-analysis of studies comparing ATAAD patients undergoing aortic surgery before versus during the COVID-19 pandemic and literature review of published cases reporting COVID-19 patients undergoing surgical repair for ATAAD. PubMed, China National Knowledge Infrastructure, VIP, WANFANG, and SinoMed databases were searched for relevant studies and case reports till January 21st, 2023, and the database search was updated on January 3rd, 2024. Meta-analysis was performed by utilizing RevMan. Pooled odds ratio (OR) and 95% confidence interval (CI) were estimated for dichotomous data, and weighted mean difference (WMD) and 95% CI for continuous data, respectively. All P-values were 2-sided and statistical significance was defined as P < .05. RESULTS: Meta-analysis of 5 included studies comparing ATAAD patients undergoing aortic surgery before versus during the COVID-19 pandemic demonstrated that, the patients in Group During-Pandemic (DP) were older than those in Group Before-Pandemic (BP; P = .005), and the body mass index of the patients in Group DP was lower than that of the patients in Group BP (P = .002), more patients in Group DP were smokers (P = .02). Meta-analysis also showed that, either the composite incidence of mortality and morbidities or individual morbidity was comparable between 2 groups, except that more patients in Group DP developed pneumonia (P = .05). Literature reviews of 24 published cases reporting COVID-19 patients undergoing surgical repair for ATAAD demonstrated that, twenty (83.3%) patients recovered well after aortic surgery and were finally discharged from hospital. Unfortunately, 4 patients died postoperatively, 3 due to multiple organ failure and one due to respiratory failure (RF). Reported postoperative complications included hypoxia, endotracheal re-intubation, RF, renal failure, coagulopathy, fever, multi-organ failure and shock. CONCLUSION: The hospitalized outcomes of ATAAD patients undergoing surgical repair before versus during the COVID-19 were mostly comparable. ATAAD patients with concomitant COVID-19 infection who underwent emergent surgical repair had a high risk of mortality and morbidities.