Doppler Evaluation of Uterine Blood Flow in Patients with Unexplained Recurrent Pregnancy Loss

Q: What are the key findings of this study?

Patients with unexplained recurrent pregnancy loss had a significantly higher rate of adverse pregnancy outcomes compared to controls (20.69% vs 10.42%), with spiral artery hemodynamics serving as a reliable predictor.

Q: What is the clinical evidence from this study?

Study design: Cohort. Population: Unexplained recurrent pregnancy loss (n=318). Intervention: Unexplained recurrent pregnancy loss (URPL) vs. No history of adverse pregnancies. Primary outcome: Adverse pregnancy outcomes (p=<0.05).

Q: What does this research mean for the field?

Abnormal uterine and spiral artery hemodynamics contribute to unexplained recurrent pregnancy loss and adverse pregnancy outcomes, with spiral artery hemodynamics serving as a more reliable predictor than uterine artery parameters. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Yanyu Zhong; Nan Wang; Sihui Lu; Yaqian Lu; Xin Pan; Ying Zhou

doi:10.2147/ijwh.s477828

October 1, 2024International Journal of Women s HealthOpen Access

Doppler Evaluation of Uterine Blood Flow in Patients with Unexplained Recurrent Pregnancy Loss

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Key result

Unexplained recurrent pregnancy loss linked to ~99% more adverse outcomes, predicted by spiral artery hemodynamics.

P<0.05
n=318

Figures

Why the study?

This study aimed to analyze uterine artery and spiral artery hemodynamics in patients with unexplained recurrent pregnancy loss and varying pregnancy outcomes.

Does Doppler evaluation of uterine and spiral artery hemodynamics predict pregnancy outcomes in women with unexplained recurrent pregnancy loss?

Study Design

Type

Cohort (n=318)

Multicenter

No

Structured PICO

Does Doppler evaluation of uterine and spiral artery hemodynamics predict pregnancy outcomes in women with unexplained recurrent pregnancy loss?

P

Population

318 pregnant women aged 20 to 40 years, including 174 with a history of unexplained recurrent pregnancy loss and 144 healthy controls, followed until the conclusion of pregnancy.

E

Exposure

Doppler evaluation of uterine artery and spiral artery hemodynamics

C

Comparator

Comparison between normal and adverse pregnancy outcomes within URPL and control groups

O

Outcome

Uterine artery and spiral artery hemodynamics during different stages of gestation and their predictive value for pregnancy outcomessurrogate

Main Result

Absolute Event Rate: 20.69% vs 10.42%

p-value: p=<0.05

Spiral artery hemodynamics are more reliable predictors of pregnancy outcomes than uterine artery parameters in patients with unexplained recurrent pregnancy loss.

Limitations

Limited number of patients
Retrospective design may be subject to selection and information biases
Unable to comprehensively analyze and statistically account for all potential factors impacting adverse pregnancy outcomes

Implication

Spiral artery Doppler may aid risk stratification in unexplained recurrent pregnancy loss; leaves open whether routine use improves outcomes.

Abstract

Objective: This study aimed to analyze uterine artery and spiral artery hemodynamics in patients with unexplained recurrent pregnancy loss (URPL) with varying pregnancy outcomes. Methods: 174 pregnant women with URPL and 144 pregnant women without adverse pregnancy histories were enrolled in this retrospective study. Based on pregnancy outcomes, these patients were divided into two groups: normal pregnancy outcomes (URPL-N, n=138) and adverse pregnancy outcomes (URPL-A, n=36). Control group participants were categorized into normal pregnancy outcomes (CON-N, n=129) and adverse pregnancy outcomes (CON-A, n=15). We compared uterine artery and spiral artery hemodynamics during different stages of gestation and the predictive value of these parameters for pregnancy outcomes. Results: URPL-N group had fewer pregnancy losses and lower BMI compared to URPL-A group (P< 0.05). Spiral artery hemodynamics in URPL-N and CON-N groups were lower than those in URPL-A and CON-A groups during the mid-luteal phase, 11-13 weeks, 15-17 weeks, and 19-21 weeks of gestation, respectively. Uterine artery hemodynamics ((Pulsatility index (mPI), resistive index (mRI), and systolic-to-diastolic ratio (mS/D)) in the mid-luteal period were lower in URPL-N group than URPL-A group. Similarly, in CON-N group were lower than CON-A group. The URPL-A and CON-A groups had higher uterine artery and spiral artery hemodynamics when compared to the URPL-N and CON-N groups. Spiral artery hemodynamics exhibited larger areas under the ROC curve compared to uterine artery parameters. Conclusion: Abnormal hemodynamics in these arteries may contribute to URPL and adverse pregnancy outcomes. Spiral artery hemodynamics are more reliable predictors of pregnancy outcomes than uterine artery parameters.

Discussion

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Cite This Study

Zhong et al. (2024) conducted a cohort in Unexplained recurrent pregnancy loss (n=318). Unexplained recurrent pregnancy loss (URPL) vs. No history of adverse pregnancies was evaluated on Adverse pregnancy outcomes (p=<0.05). Patients with unexplained recurrent pregnancy loss had a significantly higher rate of adverse pregnancy outcomes compared to controls (20.69% vs 10.42%), with spiral artery hemodynamics serving as a reliable predictor.

synapsesocial.com/papers/6aa921b407f6ffa79a0c0284 https://doi.org/10.2147/ijwh.s477828

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Doppler Evaluation of Uterine Blood Flow in Patients with Unexplained Recurrent Pregnancy Loss

Figures

Study Design

Structured PICO

Main Result

Limitations

Implication

Abstract

Discussion

Cite This Study

Doppler Evaluation of Uterine Blood Flow in Patients with Unexplained Recurrent Pregnancy Loss

Figures

Study Design

Structured PICO

Main Result

Limitations

Implication

Abstract

Discussion

Cite This Study

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