IMR Press / CEOG / Volume 48 / Issue 2 / DOI: 10.31083/j.ceog.2021.02.2294
Open Access Original Research
Change in uterine artery blood flow with intrauterine balloon tamponade
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1 Department of Obstetrics & Gynecology, Gifu University Graduate School of Medicine, 1-1 Yanagido, 500-0000 Gifu City, Gifu, Japan
*Correspondence: (Ryuichi Shimaoka)
Clin. Exp. Obstet. Gynecol. 2021, 48(2), 307–311;
Submitted: 15 September 2020 | Revised: 23 October 2020 | Accepted: 28 October 2020 | Published: 15 April 2021
Copyright: © 2021 The Authors. Published by IMR Press.
This is an open access article under the CC BY 4.0 license (

The purpose of this study was to investigate the change in uterine artery blood flow in cases of intrauterine balloon tamponade (IBT). This was a retrospective cross-sectional study of 132 patients who underwent singleton cesarean section. IBT was performed in 35 of the 132 patients. There were 21 cases of placental mediated pregnancy complications (PMPC), which were not included in the IBT group. Placental positional abnormalities were significantly more common in the IBT group than in the control group (89% vs. 9%, P < 0.001). Multivariate analysis identified PMPC as a factor affecting the immediate preoperative uterine artery pulsatility index (UtA-PI). Finally, PMPC was excluded and we assessed 35 and 76 patients assigned to the IBT and control groups, respectively. We compared changes in uterine artery blood flow with and without IBT and by balloon volume. In the IBT group, the immediate pre- and postoperative UtA-PIs were significantly lower (0.56 ± 0.18 vs. 0.63 ± 0.15, P = 0.011, statistical power = 0.577) and higher (1.37 ± 0.66 vs. 0.96 ± 0.28, P < 0.001, statistical power = 0.986), respectively, than those in the control group. The immediate postoperative UtA-PIs depending on balloon expansion volume were 1.13 ± 0.60, 1.24 ± 0.57, and 1.71 ± 0.75, with balloon volumes of 100–199 mL, 200–299 mL, and 300–399 mL, respectively. In summary, IBT during cesarean section increases the immediate post-operative UtA-PI, and tends to increase with increase in balloon volume.

Balloon tamponade
Uterine artery
Doppler ultrasound
Cesarean section
Placenta previa
Fig. 1.
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