Collateral effect of the COVID-19 pandemic on cardiology service provision and cardiovascular mortality in a population-based study: COVID-COR-LT

Background: Collateral damage of the COVID-19 pandemic on cardiovascular health is increasingly studied. This is a population-based study addressing multiple aspects of cardiovascular care during the pandemic in a country of Lithuania, in which pandemic waves were significantly different.

Methods: Data on cardiology outpatient care, hospitalizations and cardiovascular mortality in 2019 and 2020 were collected from Lithuanian nationwide administrative databases and registries. Weekly data and aggregated numbers of corresponding 6-week phases were analyzed comparing the numbers between 2019 and 2020. Age, sex and regional subgroup analysis was performed.

Results: Both cardiovascular outpatient care visits and hospitalizations decreased dramatically in 2020 compared to 2019 with a peak reduction (up to - 60% for both) during the first pandemic wave in spring of 2020. Simultaneously, cardiovascular mortality was much higher in 2020, with a pronounced peak at the end of the year compared to 2019 (up to 46%). The increase was even more staggering when analyzing home deaths, which rose up to 91% by the end of 2020. Notable differences between age groups, regions and sexes were documented.

Conclusion: A profound indirect damage of COVID-19 pandemic on cardiovascular care was observed in this study, with striking decreases in cardiovascular care provision and concurrent increase in cardiovascular mortality, both overall and, even more dramatically, at home.

Trial registration: ClinicalTrials.gov: NCT05021575 (registration date 25-08-2021, retrospectively registered).