Balloon tamponade has become an important part of our armamentarium for the management of postpartum hemorrhage. The present study was conducted to assess the relationship between balloon distension and uterine artery blood flow patterns.
Materials & Methods: This study was conducted on 16 females. Obstectric & temponade system (OTS) had a uterine balloon and a vaginal balloon. Blood pressure prior to balloon inflation was recorded. The uterine balloon was carefully and incrementally inflated under ultrasound guidance until it filled and mildly distended the uterine cavity. The time to maximum inflation, volume of saline infused, and pressure within the balloon were recorded during the inflation process or at the final inflation as dictated by clinical conditions, with multiple pressure measurements recorded.
Results: The mean heights of patients was 62± 2.7 inches, weight (145± 12 pounds), Gravidity/Parity (2 [1–6]/1), type of delivery was vaginal (12) and cesarean (4) and gestational age was 37.6± 1.4 weeks. The mean systolic blood pressure was 106.42 mm Hg, maximum volume infusion was 960 mL, pressure at maximum value was 58.22 mm Hg and estimated blood loss was 440 ml.
Conclusion: Intraluminal pressure increases curvilinearly as volume of an intrauterine tamponade balloon is increased. At maximal inflation volume, all of the patients with reversed diastolic flow had intraluminal pressure less than systolic blood pressure.