Key result
Increased right ventricular myocardial deformation (RV MyoGLS) was independently associated with operative delivery due to suspected intrapartum fetal compromise (OR 0.575, 95% CI 0.366-0.903, p=0.02).
Why the study?
To evaluate fetal myocardial deformation in normo-oxygenated fetuses during early labour and determine its relationship with intrapartum outcomes.
Does fetal myocardial deformation assessment predict operative delivery due to suspected intrapartum fetal compromise in uncomplicated singleton term pregnancies?
Observational (n=208)
No
Does fetal myocardial deformation assessment predict operative delivery due to suspected intrapartum fetal compromise in uncomplicated singleton term pregnancies?
Increased right ventricular myocardial deformation in early labor is associated with subsequent operative delivery for suspected fetal compromise, suggesting it may serve as an early marker of labor-related hypoxia.
Answers are grounded in this paper and cite their sources.
RV myocardial deformation was associated with operative delivery for suspected IFC; hypothesis-generating for intrapartum risk stratification in term pregnancies.
OBJECTIVE: To assess fetal myocardial deformation in normo-oxygenated foetuses in early labour and its relationship with intrapartum outcomes. DESIGN: Single centre prospective study. SETTING: Referral tertiary maternity unit. POPULATION: Uncomplicated singleton term pregnancies in early labour. METHODS: Two-dimensional (2D) ultrasound clips of the 4-chamber view of the fetal heart were collected in labour and sent to TomTec software for the offline speckle tracking echocardiography analysis. The left (LV) and right ventricular (RV) myocardial (MyoGLS) and endocardial longitudinal (EndoGLS) strain were evaluated. MAIN OUTCOME MEASURES: Operative delivery including caesarean or assisted vaginal birth due to suspected intrapartum fetal compromise (IFC) as defined by standard CTG criteria. RESULTS: In total, 208 cases were included. Operative delivery due to suspected IFC was recorded in 20 (9.6%) cases and was associated with higher LV ejection fraction (EF) (47.4 + 8.2 vs. 40.9 + 12.9%, p = 0.03) and increased RV MyoGLS (-15.9 + 4.0 vs. -12.5 + 4.3%, p < 0.01) and RV EndoGLS (-17.7 + 4.4 vs. -14.3 + 4.7%, p < 0.01) compared to cases not having operative delivery due to suspected IFC. Maternal age (OR 1.138, 95% CI [1.010-1.281], p = 0.03), baseline fetal heart rate at acquisition (OR 1.068, 95% CI [1.007-1.134], p = 0.03) and RV MyoGLS (OR 0.575, 95% CI [0.366-0.903], p = 0.02) were independently associated with the primary outcome. CONCLUSIONS: Increased right ventricular myocardial deformation is associated with operative delivery due to suspected IFC, suggesting an early cardiac response to labour-related hypoxia.
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Dall’Asta et al. (2025) conducted an observational in Uncomplicated singleton term pregnancies in early labour (n=208). Right ventricular myocardial deformation (RV MyoGLS) was evaluated on Operative delivery including caesarean or assisted vaginal birth due to suspected intrapartum fetal compromise (IFC) (OR 0.575, 95% CI 0.366-0.903, p=0.02). Increased right ventricular myocardial deformation (RV MyoGLS) was independently associated with operative delivery due to suspected intrapartum fetal compromise (OR 0.575, 95% CI 0.366-0.903, p=0.02).
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