Intrauterine hematomas in the second and third trimesters associated with adverse pregnancy outcomes: a retrospective study

Objective: To carry out a retrospective study of the clinical features of patients with intrauterine hematoma in the second and third trimesters, and discuss the risk factors for poor pregnancy outcomes.

Methods: A total of 398 patients who underwent routine examination in our hospital from January 2011 to December 2015 were classified into normal pregnancy (NP) group (N?=?265) and adverse pregnancy (AP) group (N?=?133), according to their pregnancy outcomes. Maternal clinical demographics, gestational age, location of hematoma, volume of hematoma, and accompanying contraction and vaginal bleeding were recorded.

Results: The average age of pregnant women in the NP and AP groups was 28.25?±?4.06 and 29.5?±?5.06 years, respectively (p?=?0.007). Gestational age at first detection of hematoma was 15.11?±?5.13 weeks in the NP group compared with 21.22?±?8.25 weeks in the AP group (p?p?Conclusion: Intrauterine hematoma in the second and third trimesters is a sign of pathological pregnancy, resulting in adverse outcomes. Maternal age, gestational age at first diagnosis, location of hematoma and accompanying contraction are risk factors for poor pregnancy outcomes.