Anti-Hypertensive Treatment In Stable Pregnant Women With Severe Pre-Eclampsia (Metildopape) (METILDOPAPE)

Professor Fernando Figueira Integral Medicine Institute

Status and phase: Unknown; Phase 4

Conditions: Preeclampsia

Treatments: Drug: placebo; Drug: methildopa

Study type: Interventional

Funder types: Other

Identifiers

NCT01361425

METILDOPA PE 1

Details and patient eligibility

About

Introduction: Hypertensive emergency in pregnant women with pre-eclampsia should be treated for preventing stroke and placental abruption. However, the benefit of antihypertensive medication maintenance remains unclear, mainly due to the potential risk of fetal growth restriction.

Full description

Objectives: To evaluate the effectiveness of antihypertensive treatment maintenance with 1.5 g / day of methyldopa for controlling maternal blood pressure in pregnant women with severe pre-eclampsia and stable blood pressure. Methods: A clinical, randomized, triple-masked, placebo-controlled study will be conducted at the Instituto de Medicina Integral Prof. Fernando Figueira from March 2011 to March 2012. The study will include 200 patients with severe preeclampsia between 20 to 34 weeks of gestation, which will be randomized into two groups: placebo and methyldopa. Patients with more severe hypertensive disorders, congenital anomalies and maternal medical complications or conditions that may compromise the mother-child well-being will be excluded from the study. The primary outcomes will be: systolic, diastolic and mean maternal heart rate, need for association with another antihypertensive agent, need and reason for discontinuation of treatment, frequency of hypertensive peaks and uncontrolled hypertension. The variables relating to maternal characteristics of pregnancy, clinical and obstetric complications during pregnancy and after delivery, and adverse perinatal outcomes will be considered secondary outcomes. After inclusion of patients in the study, numbered boxes containing methyldopa or placebo will be offered to patients with appropriate explanations about oral administration. The initial dose of methyldopa is 1.5 g / day divided into three daily doses and can be reduced to 1.0 g / day or increased to 2.0 g / day depending on the clinical need of patients. On the other group, three tablets / day of placebo will be administered and this dose may be reduced or increased to two tablets to four tablets per day. Statistical analysis will be performed using the statistical program Epi-Info 3.5.1. and Minitab, version 14.2. for Windows. The analysis will be performed with the groups identified as A or B, and the secrecy will be broken only after obtaining the results and preparing the tables or by resolution of the Committee for External Monitoring. Categorical variables will be compared in contingency tables, using chi-square and Fisher exact test, when appropriate. Risk ratio (RR) and its 95% confidence interval will be calculated as a measure of relative risk. Regarding the quantitative variables, if they have normal distribution, comparison between groups will be performed using the Student t test for unpaired samples. If it is found that the distribution is not normal, the nonparametric Mann-Whitney test will be used.

Enrollment: 200 estimated patients

Sex: Female

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• single pregnancy
• severe preeclampsia
• life fetus
• stable blood pressure
• gestational age between 20 weeks and 34 weeks

Exclusion criteria

• fetal anomalies
• antihypertensive drugs use
• others drugs use
• active labour
• tabagism
• Intra-Uterine Growth Restriction process

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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200 participants in 2 patient groups, including a placebo group

methildopa

Experimental group

Description:

pregnant women with stable severe pre-eclampsia will use methildopa (1,5g/day)

Treatment:

Drug: methildopa

placebo

Placebo Comparator group

Description:

stable pregnant women with severe preeclampsia will use placebo

Treatment:

Drug: placebo