Autopsy Findings and Venous Thromboembolism in Patients With
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The new coronavirus, severe acute respiratory syndrome coronavirus-2 (SARS–CoV-2), has caused more than 210 000 deaths worldwide. However, little is known about the causes of death and the virus's pathologic features.

The objective of this study was to validate and compare clinical findings with data from medical autopsy, virtual autopsy, and virologic tests. A Prospective cohort study was carried out. Autopsies performed at a single academic medical center, as mandated by the German federal state of Hamburg for patients dying with a polymerase chain reaction confirmed diagnosis of COVID-19. In the first 12 consecutive COVID-19–positive deaths, Complete autopsy, including postmortem computed tomography and histopathologic and virologic analysis, was performed. Clinical data and medical course were evaluated.

Results: Median patient age was 73 years, 75% of patients were male, and death occurred in the hospital or outpatient sector. Coronary heart disease and asthma or chronic obstructive pulmonary disease were the most common comorbid conditions. Autopsy revealed deep venous thrombosis in 7 of 12 patients in whom venous thromboembolism was not suspected before death; pulmonary embolism was the direct cause of death in 4 patients. Postmortem computed tomography revealed reticular infiltration of the lungs with severe bilateral, dense consolidation, whereas histomorphologically diffuse alveolar damage was seen in 8 patients. In all patients, SARS–CoV-2 RNA was detected in the lung at high concentrations; viremia in 6 of 10 and 5 of 12 patients demonstrated high viral RNA titers in the liver, kidney, or heart.

Conclusively, The high incidence of thromboembolic events suggests an important role of COVID-19–induced coagulopathy. Further studies are needed to investigate the molecular mechanism and overall clinical incidence of COVID-19–related death, as well as possible therapeutic interventions to reduce it.

Source: https://www.acpjournals.org/doi/10.7326/M20-2003
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