Pregnancy hypertension · 2017
Influence of non-dipping pattern of blood pressure in gestational hypertension on maternal cardiac function, hemodynamics and intrauterine growth restriction.
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Ilic A, Ilic D J, Tadic S, Stefanovic M, Stojsic-Milosavljevic A, Pavlovic K, Redzek A, Velicki L
Аннотация
BACKGROUND: An association between gestational hypertension (GH) and changes of maternal cardiac function was previously reported.
AIM: The study assessed the effect of non-dipping pattern of blood pressure (BP) in GH on haemodynamic function and intrauterine growth restriction (IUGR).
METHODS: This study included 126 women (91 with GH and 35 normotensive controls). Based on the BP values measured by ambulatory blood pressure monitoring (ABPM), all hypertensive women were classified in dipper (46 women) or in non-dipper group (45 women). All participants underwent echocardiography and ABPM during the third trimester.
RESULTS: Participants with GH and non-dipping pattern had significantly lower velocity of longitudinal systolic function (s') (p<0.0005), and cardiac output index (COi) compared to dippers (p<0.0005) and controls (p=0.002). Diastolic velocities at the mitral valve annulus were also lower in non-dippers e's (non-dippers vs dippers p=0.023; non-dippers vs controls p<0.0005) and e'l (non-dippers vs dippers p=0.048; non-dippers vs controls p<0.0005). There were significant differences in the index of the left ventricle filling pressure E/e' and myocardial mass index between women with GH and controls, but with no significant difference among dippers and non-dippers. Total vascular resistance was increased in non-dipping group compared to normotensives and dippers (p<0.0005). Multivariate regression analysis revealed that the peak night-time diastolic BP, left ventricular mass index and CO index were identified as independent predictors of IUGR.
CONCLUSION: Changes in maternal hemodynamics, as well as IUGR, are strongly related to the non-dipping pattern of BP.
AIM: The study assessed the effect of non-dipping pattern of blood pressure (BP) in GH on haemodynamic function and intrauterine growth restriction (IUGR).
METHODS: This study included 126 women (91 with GH and 35 normotensive controls). Based on the BP values measured by ambulatory blood pressure monitoring (ABPM), all hypertensive women were classified in dipper (46 women) or in non-dipper group (45 women). All participants underwent echocardiography and ABPM during the third trimester.
RESULTS: Participants with GH and non-dipping pattern had significantly lower velocity of longitudinal systolic function (s') (p<0.0005), and cardiac output index (COi) compared to dippers (p<0.0005) and controls (p=0.002). Diastolic velocities at the mitral valve annulus were also lower in non-dippers e's (non-dippers vs dippers p=0.023; non-dippers vs controls p<0.0005) and e'l (non-dippers vs dippers p=0.048; non-dippers vs controls p<0.0005). There were significant differences in the index of the left ventricle filling pressure E/e' and myocardial mass index between women with GH and controls, but with no significant difference among dippers and non-dippers. Total vascular resistance was increased in non-dipping group compared to normotensives and dippers (p<0.0005). Multivariate regression analysis revealed that the peak night-time diastolic BP, left ventricular mass index and CO index were identified as independent predictors of IUGR.
CONCLUSION: Changes in maternal hemodynamics, as well as IUGR, are strongly related to the non-dipping pattern of BP.