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Velamentous cord insertion and atypical variable decelerations with no accelerations
Author(s) -
Hasegawa J.,
Matsuoka R.,
Ichizuka K.,
Sekizawa A.,
Farina A.,
Okai T.
Publication year - 2005
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1016/j.ijgo.2005.03.028
Subject(s) - medicine , odds ratio , confidence interval , obstetrics , pregnancy , cord , gynecology , surgery , genetics , biology
Objectives: To examine intrapartum fetal heart rate (FHR) patterns in the presence of velamentous cord insertion (VCI). Methods: The site of cord insertion was determined in 1460 women on antenatal ultrasonographic and postnatal examinations. Each of 24 women with pregnancies complicated with VCI was matched at the onset of labor with 10 women who had a normal pregnancy, and FHR patterns were analyzed for both cases and controls. Results: Compared with controls, cases of variable decelerations with no accelerations (VDNA) during the first and second stages of labor were more frequent in women with VCI (first stage: 25% vs. 5.1%, second stage: 65.0% vs. 21.7%, P < 0.001). The adjusted odds ratio associated with VDNA occurrence in women with VCI was 3.83 (95% confidence interval [CI]: 1.51–9.72, P = 0.005). The mean odds ratio associated with length of aberrant vessels in women with VCI plus VDNA was 1.38 (95% CI: 1.04–1.83, P = 0.026). Conclusion: Pregnancies complicated with VCI are associated with a higher rate of VDNA.