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The aim of this study is to systematically review and analyze the incidence and outcomes of COVID-19 in patients with pulmonary hypertension (PH).
We searched PubMed, SCOPUS, Web of Science, and Embase for relevant publications up to March 27th, 2024. Articles were screened for studies on the incidence or outcomes of COVID-19 in PH patients. Screening, data extraction, and risk of bias assessment were performed independently in duplicate. When possible, relevant results were pooled using the random effects model.
Of the 5,981 articles, a total of 30 were included in the systematic review and 29 in the meta-analysis. The incidence rate of COVID-19 in PH patients was 25 (15-41) per 100,000 person-day. The hospitalization rate was 47% (26.4-68.7), and the mean duration of hospitalization was 10.033 (9.644-10.422) ± 0.198 days. The rate of admission to the intensive care unit was 35.8% (23.9-49.9) and mechanical ventilation was required in 17.4% (11.6-25.3) of hospitalized patients. The in-hospital mortality rate was 23.1% (21.6-24.6). Further analysis of studies comparing COVID-19 patients with and without PH showed a higher mortality rate in COVID-19 patients with PH (OR = 1.722 CI 95% (1.393-2.128), P < 0.0001, I2 = 99%). Meta-regression showed no significant association between sex and the incidence of COVID-19 infection in PH patients.
Pre-existing PH may not be associated with a higher incidence of COVID-19 but may be associated with worsening outcomes of COVID-19 infection.
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