The postnatal morbidity associated with second-trimester miscarriage.

OBJECTIVE(S): To describe the complications, and their incidence, associated with the management and delivery of a distinct second-trimester miscarriage cohort.

METHODS: A retrospective cohort study was undertaken in a large, tertiary-referral university hospital (8500 deliveries per annum). All cases of pregnancy loss occurring between 14(+0) and 23(+6) were identified from July 2009 to June 2013 (n = 181). Medical notes were reviewed and the number of complications among this cohort was identified. Logistic regression was conducted to assess associations with clinical presentation and management.

RESULTS: The mean gestation of loss was 18(+2) weeks (SD: 2(+2)). 64.6% (n = 117) of the total losses were of intrauterine fetal demise (IUFD) with 17.7% (n = 32) following preterm premature rupture of membranes (PPROM) and 17.7% (n = 32) following preterm labour (PTL). All women required inpatient admission with 59.1% (n = 107) undergoing medical induction of labour. PPROM cases, compared with cases of IUFD, had increased odds of requiring antibiotic therapy (OR 13.75, 95% CI: 4.88-38.72) and readmission (OR OR 4.15, 95% CI 1.12-15.36).

CONCLUSION: These women represent a small proportion of the obstetric population but remain a distinct cohort whose management is complicated by high rates of morbidity requiring medical intervention. An awareness of these risks should inform future clinical practice.