Abstract

To compare the prevalence of adjacent organ injury in placenta accreta spectrum disorder (PAS) between the posterior colpotomy approach and conventional peripartum hysterectomy. This retrospective study analyzed the data of pregnant women diagnosed with PAS who underwent peripartum hysterectomy at Songklanagarind Hospital between January 2006 and December 2021. The patients were divided into two groups: posterior colpotomy and conventional approaches. The characteristics and surgical and obstetric outcomes were compared. Univariate and multivariate logistic regression was used to identify factors and risk of organ injury. Among 174 patients, 64 underwent conventional peripartum hysterectomy, and 110 underwent the posterior colpotomy approach. The overall incidence of adjacent organ injury was 17.82%. Organ injury prevalence was lower in the posterior colpotomy group (10%) than in the conventional group (31.25%), with no difference in operative time. Multivariate analysis showed that posterior colpotomy reduced adjacent organ injury (odds ratio [OR] 0.18, 95% confidence interval [CI] 0.06-0.54, P = 0.002). Placenta percreta was associated with increased injury risk (OR 6.83, 95% CI 2.53-18.44, P < 0.002). Subgroup analysis showed that the posterior approach reduced bladder injury in placenta increta (OR 0.14, 95% CI 0.04-0.57, P = 0.003) and percreta (OR 0.19, 95% CI 0.05-0.77, P = 0.017). Compared with conventional peripartum hysterectomy, the posterior colpotomy approach in patients with PAS reduced the risk of adjacent organ injury, particularly for placenta increta and percreta. This technique should be considered in PAS cases, but further investigations with a prospective study design are needed.

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