Study note
Obstetrics & GynecologyHypertensive Disorders in Pregnancy

Roll over test in pregnancy

THE CONTEXT
The roll over test is a screening test that assesses the diastolic blood pressure response to a change in maternal position.

Timing and procedure

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Perform the test between 28 and 32 weeks of gestation.
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Measure blood pressure with the woman lying on her side, then ask her to roll onto her back and measure it again.

Interpretation

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An increase of 20 mm Hg in diastolic pressure from the side to the back position indicates a positive test.
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About 33% of women with a positive test subsequently developed hypertension.
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The passage states that a negative test is of value.
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