Background The coronavirus disease-2019 (COVID-19) pandemic has affected patients with ST-segment elevation myocardial infarction (STEMI) requiring primary percutaneous coronary intervention (PCI) worldwide. This review examines the global impact of COVID-19 pandemic on incidence of STEMI admissions, and relationship between the pandemic and door-to-balloon time (D2B), all-cause mortality and other secondary STEMI outcomes. Methods We performed a systematic review and meta-analysis to primarily compare D2B time and in-hospital mortality of STEMI patients who underwent primary PCI during and before the pandemic. Subgroup analyses were performed to investigate the influence of geographical region and income status of a country on STEMI care. An online database search included studies comparing the aforementioned outcomes between STEMI patients during and before the pandemic. Results In total, 32 articles were analyzed. Overall, 19,140 and 68,662 STEMI patients underwent primary PCI during and before the pandemic respectively. Significant delay in D2B was observed during the pandemic (WMD=8.10mins; CI:3.90-12.30mins; p =0.0002, I 2 =90%). In-hospital mortality was higher during the pandemic (OR=1.27; CI:1.09-1.49; p= 0.002, I 2 =36%), however this varied with factors such as geographical location and income status of a country. Subgroup analysis found that low-middle income countries observed a higher rate of mortality during the pandemic (OR=1.52; CI:1.13-2.05; p =0.006), with a similar but insignificant trend seen among the high income countries (OR=1.17; CI:0.95-1.44; p =0.13). Conclusion The COVID-19 pandemic is associated with worse STEMI performance metrics and clinical outcome, particularly in the Eastern low-middle income status countries. Better strategies are needed to address these global trends in STEMI care during the pandemic.

Background and Aims: Spontaneous bacterial peritonitis (SBP) is a common and potentially fatal complication of liver cirrhosis. This study aims to analyze the prevalence of SBP among liver cirrhotic patients according to geographical location and income level, and risk factors and outcomes of SBP.Methods: A systematic search for articles describing prevalence, risk factors and outcomes of SBP was conducted. A single-arm meta-analysis was performed using generalized linear mix model (GLMM) with Clopper-Pearson intervals.Results: Ninety-Nine articles, comprising a total of 5,861,142 individuals with cirrhosis were included. Pooled prevalence of SBP was found to be 17.12% globally (CI: 13.63–21.30%), highest in Africa (68.20%; CI: 12.17–97.08%), and lowest in North America (10.81%; CI: 5.32–20.73%). Prevalence of community-acquired SBP was 6.05% (CI: 4.32–8.40%), and 11.11% (CI: 5.84–20.11%,) for healthcare-associated SBP. Antibiotic-resistant microorganisms were found in 11.77% (CI: 7.63–17.73%) of SBP patients. Of which, methicillin-resistant Staphylococcus aureus was most common (6.23%; CI: 3.83–9.97%), followed by extended-spectrum beta-lactamase producing organisms (6.19%; CI: 3.32–11.26%), and lastly vancomycin-resistant enterococci (1.91%; CI: 0.41–8.46%). Subgroup analysis comparing prevalence, antibiotic resistance, and outcomes between income groups was conducted to explore a link between socioeconomic status and SBP, which revealed decreased risk of SBP and negative outcomes in high-income countries.Conclusion: SBP remains a frequent complication of liver cirrhosis worldwide. The drawn link between income level and SBP in liver cirrhosis may enable further insight on actions necessary to tackle the disease on a global scale.

Pre-liver transplant (LT) chronic kidney disease (CKD) has emerged as a leading cause of post-operative morbidity. We aimed to report the prevalence, associated risk factors, and clinical outcomes in patients with pre-LT CKD. Meta-analysis and systematic review were conducted for included cohort and cross-sectional studies. Studies comparing healthy and patients with s pre-LT CKD were included. Outcomes were assessed with pooled hazard ratios. 15 studies were included, consisting of 82,432 LT patients and 26,754 with pre-LT CKD. Pooled prevalence of pre-LT CKD was 22.35% (CI: 15.30%-32.71%). Diabetes mellitus, hypertension, viral hepatitis, and non-alcoholic fatty liver disease, and older age were associated with increased risk of pre-LT CKD: (OR 1.72 CI: 1.15-2.56, P = 0.01), (OR 2.23 CI: 1.76-2.83, P < 0.01), (OR 1.09; CI: 1.05-1.13, P < 0.01), (OR 1.73; CI: 1.10-2.71 P = 0.03), and (MD: 2.92 years; CI: 1.29-4.55years; P < 0.01) respectively. Pre-LT CKD was significantly associated with increased mortality (HR 1.38; CI: 1.2-1.59; P < 0.01), post-LT end-stage renal disease and post-LT CKD. Almost a quarter of pre-LT patients have CKD and it is significantly associated with post-operative morbidity and mortality. However, long-term outcomes remain unclear due to a lack of studies reporting such outcomes.

Meta-regression was conducted with mixed effects and logit transform on proportional data. Results 35 studies involving 18421 patients were included in the analysis.The OS (HR: 1.44, 95% CI: 1.14 -1.81, p<0.01), DFS (HR: 2.72, 95% CI: 2.18 -3.39, p<0.01) were significantly worse in LR compared to LT. There was no significant difference between regions. In a sensitivity analysis of uninodular tumours, there was no significant difference in OS (HR: 1.40, 0.91 -2.17, p=0.13) but significant in DFS (HR: 2.81, CI: 2.06 -3.83, p<0.01). Meta-regression found a significant increase in mortality between LR and LT in patients with Child-Pugh C cirrhosis on DFS (beta: 0.2254, 95% CI: 0.043-0.4064, p=0.0147) but there was no significant difference arising from different HCC aetiology. With enhance surveillance, there was no significant difference between LR and LT (HR: 1.15, 0.87 -1.51, p=0.32) but significantly different in DFS (HR: 1.70, 1.07 -2.67, p=0.02) Conclusions The results present an up-to-date analysis of literature in LT vs LR. Optimal surveillance strategy post-resection/transplant remains in contention. Our analysis found no significant difference between LT and LR in overall survival with enhancing surveillance. Regional and income levels differences also exist within the literature, although without significant difference between groups