Background: Pulmonary thromboemboli are one of the main causes of sudden death especially in hospitalized patients and appeared with different nonspecific manifestations. The aim of this study was to determine the prevalence of thromboemboli.
Materials and methods: In this cross sectional study, pulmonary autopsies of 200 cadavers who were selected randomly from all cadavers with clinical suspicion of thromboemboli referred to Tehran University Tissue Archive in different months from January 2005 to 2006
and the prevalence of pulmonary embolism in these cases and its relation with demographic characteristics and sources of disease was assessed. Also, agreement degree of clinical and histopathological diagnosis of pulmonary embolism was calculated.
Results: The prevalence of pulmonary embolism was estimated at 13.5%. There were positive relationship between prevalence of pulmonary embolism and increased of age (P=0.001). Interpretation of results of macroscopic and histopathological studies for diagnosis of embolism showed moderate agreement (j = 0.59) and interpretation of results of clinical diagnosis of disease before death and pathologic
findings after death showed poor agreement (j=0.34). The most frequent detected location of emboli were end branches of pulmonary artery.
Conclusion: Considering the apparent high prevalence of pulmonary embolism in our study, we recommend increased use of anti-deep vein thrombosis measures in all appropriate patients within the Tehran hospital population, according to evidence-based guidelines
