Eran Barzilay1,2, Amir Shay3, Hila Lahav-Ezra1,2, Avi Shina1,2,4, Sharon Perlman1,2, Reuven Achiron1,2, Yinon Gilboa1,2. 1. a Department of Obstetrics and Gynecology , Chaim Sheba Medical Center , Tel-Hashomer , Israel. 2. b Sackler School of Medicine , Tel-Aviv University , Tel-Aviv , Israel. 3. c Department of Obstetrics and Gynecology , Lenox Hill Hospital , New York , NY , USA. 4. d The Pinchas Bornstein Talpiot Medical leadership program , Chaim Sheba Medical Center , Tel-Hashomer , Israel.
Abstract
OBJECTIVES: No study thus far has evaluated the LUS thickness in active labor. In this study, we endeavored to assess the LUS during active labor. METHODS: Using transabdominal sonography in the mid-sagittal position with a full urinary bladder, the thickness of the LUS was measured during active labor phase in women with or without a history of a previous cesarean section. RESULTS: A total of 28 women with a previous cesarean delivery were compared to 29 women without a history of uterine surgery. The median LUS was significantly thinner in women with a uterine scar both during (4 versus 5 mm, p = .001) and between contractions (5 versus 7 mm, p = .011). Paired comparison of LUS thickness between and during contractions within each group showed that thinning of LUS during contraction was significant for both the previous CS group (p < .001) and the control group (p < .001). We found no correlation between LUS thickness and chances of successful TOLAC. CONCLUSIONS: In this study, we characterized for the first time the LUS during active labor. We found that LUS was significantly thinner in women after a previous CS and that the LUS was significantly thinner during contraction.
OBJECTIVES: No study thus far has evaluated the LUS thickness in active labor. In this study, we endeavored to assess the LUS during active labor. METHODS: Using transabdominal sonography in the mid-sagittal position with a full urinary bladder, the thickness of the LUS was measured during active labor phase in women with or without a history of a previous cesarean section. RESULTS: A total of 28 women with a previous cesarean delivery were compared to 29 women without a history of uterine surgery. The median LUS was significantly thinner in women with a uterine scar both during (4 versus 5 mm, p = .001) and between contractions (5 versus 7 mm, p = .011). Paired comparison of LUS thickness between and during contractions within each group showed that thinning of LUS during contraction was significant for both the previous CS group (p < .001) and the control group (p < .001). We found no correlation between LUS thickness and chances of successful TOLAC. CONCLUSIONS: In this study, we characterized for the first time the LUS during active labor. We found that LUS was significantly thinner in women after a previous CS and that the LUS was significantly thinner during contraction.
Entities:
Keywords:
Lower uterine segment; trial of labor after cesarean; uterine contractions; uterine rupture
Authors: Shahla K Alalaf; Tarek Mohamed M Mansour; Sileem Ahmad Sileem; Nazar P Shabila Journal: BMC Pregnancy Childbirth Date: 2022-05-14 Impact factor: 3.105