Worldwide impact of COVID-19 on hospital admissions for non-ST-elevation acute coronary syndromes (NSTACS): a systematic review with meta-analysis of 553,038 cases.

During COVID-19 pandemic NSTACS hospitalizations decreased significantly worldwide. However, substantial heterogeneity emerged among countries, and within the same country. Factors linked to public health management, but also to methodologies to collect results may have contributed to this heterogeneity. Trial registration: The protocol was registered in PROSPERO International Prospective Register of Systematic Reviews (ID: CRD42022308159).