Increased blood pressure response to the cold pressor test in pregnant women developing pre-eclampsia.
J Hypertens
; 18(4): 399-403, 2000 Apr.
Article
em En
| MEDLINE
| ID: mdl-10779089
ABSTRACT
OBJECTIVES:
Recent data indicate an increased vascular reactivity due to an overactivity of the sympathetic nervous system in women with pre-eclampsia. We therefore evaluated whether this increased vascular reactivity can be detected prior to the clinical manifestation of preeclampsia by the use of a physiological stimulus.DESIGN:
Prospective data collection.SETTING:
Clinic of Obstetrics and Gynecology in a 2000 bed tertiary care hospital.PARTICIPANTS:
One hundred and twenty-three pregnant women between the 16th to 20th week of gestation.INTERVENTIONS:
A cold pressor test was performed by positioning an ice-bag on the forehead of the woman for 3 min. Blood pressure and heart rate were monitored by a continuous, noninvasive blood pressure measurement device during the stimulus and after removal of the icebag. A clinical follow-up was carried out by review of the charts after delivery to identify those women who have developed pre-eclampsia.RESULTS:
Ten (8%) out of 123 pregnant women developed pre-eclampsia. During the cold pressor test systolic as well as diastolic blood pressure increased significantly and was more pronounced in women developing pre-eclampsia compared with healthy pregnant women (systolic blood pressure 14.2 +/- 5.5 versus 8.5 +/- 7.2 mmHg, P= 0.02; diastolic blood pressure 7.3 +/- 4.9 versus 3.9 +/- 4.7 mmHg, P=0.03). The change in heart rate was similar between both groups (8 +/- 2.6 versus 10.4 +/- 6.4 beats/min, not significant).CONCLUSIONS:
An increased vasoconstrictive response to a physiological stimulus is present in women with pre-eclampsia as a sign of an increased vascular reactivity prior to clinical manifestation of the disease. The cold pressor test may be a suitable diagnostic tool to identify women, who will develop pre-eclampsia. However, future studies in larger cohorts are required to establish the final value of this test.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pré-Eclâmpsia
/
Pressão Sanguínea
/
Determinação da Pressão Arterial
/
Temperatura Baixa
Limite:
Adult
/
Female
/
Humans
/
Newborn
/
Pregnancy
Idioma:
En
Revista:
J Hypertens
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Áustria