Augmentation index and pulse wave velocity in normotensive and pre-eclamptic pregnancies

Autoren-Information

Franz MB, Burgmann M, Neubauer A, Zeisler H, Sanani R, Gottsauner-Wolf M, Schiessl B, Andreas M

Abstract

OBJECTIVE:

Hypertensive disorders during pregnancy remain a major health burden. Normal pregnancy is associated with systemic cardiovascular adaptation. The augmentation index and pulse wave velocity measures may serve as surrogate markers of cardiovascular pathology, including pre-eclampsia. We evaluated these parameters during and after normotensive and pre-eclamptic pregnancies.


DESIGN:

Longitudinal cohort trial involving a case-control analysis of healthy women and women with pre-eclampsia.


SETTING:

University hospital.


POPULATION:

Fifty-three healthy pregnant women between 11(+6) and 13(+6) gestational weeks, as well as 21 patients with pre-eclampsia.


METHODS:

The augmentation index and pulse wave velocity were measured seven times during pregnancy and postpartum.


MAIN OUTCOME MEASURES:

Changes in augmentation index and pulse wave velocity during and after healthy pregnancies were measured. The influence of early-onset and late-onset pre-eclampsia on these measurements both during and after pregnancy was evaluated.


RESULTS:

The normotensive pregnancies exhibited a significant decrease in the augmentation index from the first trimester to the end of the second trimester; however, the normotensive pregnancies showed an increase in the augmentation index during the third trimester as term approached. The patients with early-onset and late-onset pre-eclampsia displayed a significantly elevated augmentation index during pregnancy. The postpartum augmentation index and pulse wave velocity were significantly elevated in the early-onset pre-eclampsia group.


CONCLUSION:

After pregnancy, early-onset and late-onset pre-eclamptic patients exhibit differences in vascular function. This result indicates the presence of a higher cardiovascular risk in patients after early-onset pre-eclampsia.

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