Capillary Permeability in Normal and Hypertensive Human Pregnancy

Hunyor, S. N.; McEniery, Paul T.; Roberts, Kim A.; Bellamy, Greg; Roffe, D. J.; Gallery, Eileen D.M.; Györy, Á. Z.; Boyce, E. S.

doi:10.1111/j.1440-1681.1983.tb00210.x

Cited by 6 publications

(3 citation statements)

References 28 publications

(22 reference statements)

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“…The plasma volume on the low salt diet did not differ from that on the normal salt intake, but plasma volume expansion was observed on the high salt diet. There was no change in capillary permeability on any of the diets, although all pregnancy values were higher than postpartum measurements, confirming previous work (Hunyor et a/. 1983).…”

Section: Resultssupporting

confidence: 89%

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Blood Pressure Responses to Dietary Sodium Manipulation During Normotensive Human Pregnancy

McEniery¹,

Hunyor²,

Cooper³

et al. 1985

Clin Exp Pharma Physio

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Short-term salt loading and salt restriction in a group of normal pregnant women produced no changes in lying, sitting or standing blood pressures or heart rates. Home blood pressures showed no trend to change over the periods of altered salt intake. Although plasma volume and plasma renin activity changed with altered salt intake, there were no relationships between changes in these parameters and changes in mean arterial pressures (MAP) between the low and high salt diets. Capillary permeability and echocardiographic dimensions were unchanged by salt intake once sodium balance had been established.

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Section: Resultssupporting

confidence: 89%

“…Capillary permeability was measured at the end of each diet by venous occlusion plethysmography as previously described (Hunyor et a/. 1983).…”

Section: Methodsmentioning

confidence: 99%

Blood Pressure Responses to Dietary Sodium Manipulation During Normotensive Human Pregnancy

McEniery¹,

Hunyor²,

Cooper³

et al. 1985

Clin Exp Pharma Physio

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“…Although it has been reported that capillary filtration is smaller in women with preeclampsia than in women with normal pregnancy, 2425 the difference of capillary filtration is small between nonpregnant women, women with normal pregnancy, and women with preeclampsia compared with the value of venous distensibility. 24 - 25 Thus, the decreased venous distensibility in women with preeclampsia was not likely due to the difference in capillary filtration.…”

Section: Methodological Considerationsmentioning

confidence: 99%

Venous distensibility during pregnancy. Comparisons between normal pregnancy and preeclampsia.

et al. 1994

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Preeclampsia is associated with increased peripheral resistance. This study was performed to determine whether an increase of venous distensibility occurs as well in preeclampsia. We obtained venous distensibility by measuring the venous pressure-volume relation in the forearm with a water-filled plethysmograph. Twenty-one women with normal pregnancy, 12 women with severe preeclampsia, and 8 women with mild preeclampsia were studied during the third trimester and/or 6 weeks after the delivery. Ten nonpregnant normotensive women were also studied. Venous distensibility was greater (P<.01) in normal pregnant women and smaller (P<.01) in women with preeclampsia during pregnancy than postpartum. and decreased intravascular volume.9 ' 10 Changes in venous distensibility in women with preeclampsia are less well documented.The venous system may be important in control of intravascular volume and blood pressure. It has been documented that essential 11 and borderline 12 hypertension are associated with decreased venous distensibility. Decreases in venous distensibility shift the intravascular volume from the peripheral to the central circulation. Thus, it is possible that impaired venous distensibility may contribute to altered hemodynamic status in preeclampsia.Several previous investigators examined venous distensibility in women with preeclampsia. Weinstein et al 13 and Hunyor 14 reported no difference between normal pregnancy and preeclampsia. Stainer et al 15 reported decreased venous distensibility during preeclampsia. However, this study was cross-sectional, and they did not examine whether it was reversible postpartum. Pickles et al 16 reported increased venous distensibility during preeclampsia. Thus, the reported results are variable. The aim of this study was to further evaluate peripheral venous distensibility in preeclampsia during © 1994 American Heart Association, Inc.sibility correlated with the severity of preeclampsia. Venous distensibility was similar between normotensive nonpregnant women, women with nonnal pregnancy during the postpartum period, and women with preeclampsia during the postpartum period. Thus, venous distensibility increased during nonnal pregnancy. In preeclampsia, the decrease of venous distensibility occurred during pregnancy but was reversed postpartum. These results may suggest that a decrease of venous distensibility occurs during preeclampsia. These venous abnormalities may contribute to impaired control of hemodynamics in preeclampsia during pregnancy.

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A Method for Assessment of Blood Volume Parameters in Pregnant Sheep using Fluorescein-labelled Dextran

et al. 2008

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Capillary Permeability in Normal and Hypertensive Human Pregnancy

Cited by 6 publications

References 28 publications

Blood Pressure Responses to Dietary Sodium Manipulation During Normotensive Human Pregnancy

Blood Pressure Responses to Dietary Sodium Manipulation During Normotensive Human Pregnancy

Venous distensibility during pregnancy. Comparisons between normal pregnancy and preeclampsia.

A Method for Assessment of Blood Volume Parameters in Pregnant Sheep using Fluorescein-labelled Dextran

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