Key result
Very early pregnancy (median 6.3 weeks) was associated with significant reductions in central SBP (99 vs 92 mmHg; P<0.001) and peripheral vascular resistance compared to pre-pregnancy baseline.
Why the study?
Does very early pregnancy alter maternal cardiovascular hemodynamics compared to pre-pregnancy baseline in healthy women?
Population
56 healthy nulliparous women or women with previous uncomplicated pregnancy
Comparison
Very early pregnancy vs Pre-pregnancy baseline
Design
Cohort
Follow-up
median gestational age 6.3 weeks
Authors
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Highlights importance of pre-pregnancy baselines for interpreting early pregnancy hemodynamics; leaves open clinical implications for risk stratification.
Observational (n=56)
Does very early pregnancy alter maternal cardiovascular hemodynamics compared to pre-pregnancy baseline in healthy women?
Absolute Event Rate: 92% vs 99%
p-value: p=<0.001
Significant cardiovascular hemodynamic changes, including decreased blood pressure and peripheral vascular resistance, occur as early as 6-7 weeks gestation, indicating that pre-pregnancy baselines are necessary for accurate assessment.
Mahendru et al. (2012) conducted an observational in Healthy nulliparous or women with previous uncomplicated pregnancy (n=56). Very early pregnancy vs. Pre-pregnancy baseline was evaluated on Central systolic blood pressure (mmHg) (p=<0.001). Very early pregnancy (median 6.3 weeks) was associated with significant reductions in central SBP (99 vs 92 mmHg; P<0.001) and peripheral vascular resistance compared to pre-pregnancy baseline.
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