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The international CHIPS Trial (Control of Hypertension In Pregnancy Study) enrolled 987 women with chronic (75%) or gestational (25%) hypertension. Pre-eclampsia developed in 48%; women remained on their allocated BP control and delivered an average of two weeks later. 'Less tight' control (target diastolic BP 100 mmHg) achieved BP that was 6/5mmHg higher (p < 0.001) than 'tight' control (target diastolic 85 mmHg, BP achieved 133/85 mmHg). 'Less tight' (vs. 'tight') control resulted in similar adverse perinatal outcomes (31.5% vs. 30.7%; p = 0.84) that balanced birthweight < 10th percentile (16.1% vs. 19.8%; p = 0.14) against preterm birth (35.6% vs. 31.5%; p = 0.18). 12-month follow-up revealed no compelling evidence for developmental programming of child growth. However, 'less tight' (vs. 'tight') control resulted in more severe maternal hypertension (40.6% vs. 27.5%; p < 0.001), and more women with platelets < 100 × 10/L (4.3% vs. 1.6%; p = 0.02) or symptomatic elevated liver enzymes (4.3% vs. 1.8%; p = 0.03), with no difference in serious maternal complications (3.7% vs. 2.0%; p = 0.17). Labetalol was the drug of choice. Methyldopa did not result in inferior outcomes. Post-hoc, severe hypertension, independent of pre-eclampsia, was associated with heightened increased risk of adverse outcomes, and in 'less tight' control, of serious maternal complications. At no gestational age at initiation of BP control was 'less tight' superior to 'tight'. Women in both groups were equally satisfied with care. 'Less tight' control tended to be more expensive by CAD$6000 (p =0.07) based on neonatal care costs. Collectively, CHIPS publications have provided evidence that women with non-severe pregnancy hypertension should receive 'tight' BP control achieved by a simple algorithm.
This article was published in the following journal.
Name: Pregnancy hypertension
To assess the feasibility of a blood pressure self-monitoring intervention for managing pregnancy hypertension.
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Work consisting of a clinical trial involving one or more test treatments, at least one control treatment, specified outcome measures for evaluating the studied intervention, and a bias-free method for assigning patients to the test treatment. The treatment may be drugs, devices, or procedures studied for diagnostic, therapeutic, or prophylactic effectiveness. Control measures include placebos, active medicine, no-treatment, dosage forms and regimens, historical comparisons, etc. When randomization using mathematical techniques, such as the use of a random numbers table, is employed to assign patients to test or control treatments, the trial is characterized as a RANDOMIZED CONTROLLED TRIAL.
Work consisting of a clinical trial that involves at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table.
Pregnancy in which the mother and/or FETUS are at greater than normal risk of MORBIDITY or MORTALITY. Causes include inadequate PRENATAL CARE, previous obstetrical history (ABORTION, SPONTANEOUS), pre-existing maternal disease, pregnancy-induced disease (GESTATIONAL HYPERTENSION), and MULTIPLE PREGNANCY, as well as advanced maternal age above 35.
A condition in pregnant women with elevated systolic (>140 mm Hg) and diastolic (>90 mm Hg) blood pressure on at least two occasions 6 h apart. HYPERTENSION complicates 8-10% of all pregnancies, generally after 20 weeks of gestation. Gestational hypertension can be divided into several broad categories according to the complexity and associated symptoms, such as EDEMA; PROTEINURIA; SEIZURES; abnormalities in BLOOD COAGULATION and liver functions.
A complication of PREGNANCY, characterized by a complex of symptoms including maternal HYPERTENSION and PROTEINURIA with or without pathological EDEMA. Symptoms may range between mild and severe. Pre-eclampsia usually occurs after the 20th week of gestation, but may develop before this time in the presence of trophoblastic disease.
Obstetrics and gynaecology
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