Carlson, Anna M.

Purpose: This study examined if vertical bladder excursion during pelvic floor muscle (PFM) contraction, measured with transabdominal ultrasound (TAUS), improved following a single training session 0-5 days postpartum. It also assessed patient satisfaction with the training. Methods: 75 healthy, female volunteers within 0-5 days post-vaginal delivery were recruited during their inpatient postpartum stay. Participants completed one in-person session involving a standardized bladder filling protocol, TAUS imaging during PFM contractions, a PFM training session using TAUS as visual biofeedback, and a two-question post intervention survey. Vertical bladder base excursions were compared pre- and post- training between two groups: those whose bladder bases descended and those whose ascended during baseline contractions. A mixed model ANOVA with one between-group factor (baseline descenders vs. ascenders) and one within-group factor (pre- vs. post-training) analyzed the change in bladder lift. Patient satisfaction was assessed with Likert scales. Results: Mean vertical excursion increased from 0.12 cm (SD = 0.48) to 0.32 cm (SD = 0.33) post-training, which was statistically significant (p <.001, Cohens d = 0.767). Greater improvements were noted in those with a bladder base descent at baseline. All participants reported the experience to be helpful or very helpful and were satisfied or very satisfied. Discussion: Participants increased vertical bladder excursion during PFM contraction with TAUS biofeedback within a single session, especially those with baseline paradoxical bladder excursion and perineal trauma during delivery. Participants found the experience helpful and satisfying, suggesting TAUS biofeedback may be a useful tool in early postpartum PFM rehabilitation.