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False Results with Tests for Detecting Rupture of the Fetal Membranes (ROM)

Description

Several tests are available for detecting rupture of the fetal membranes. While superior to older tests there is still the risk of false positive or negative results.


Causes of a false positive:

(1) blood

(2) failure to follow manufacturer's instructions precisely

(3) interfering substances (baby oil, lubricant, creams, etc)

(4) vaginal manipulation

(5) late gestation (> 34 weeks)

 

Causes of a false negative:

(1) occlusion of a minor tear (overlying fetus, resealing, etc)

(2) failure to follow manufacturer's instructions precisely

(3) interfering substances (baby oil, lubricant, creams, etc)


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