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Combined Examination of Middle Cerebral Artery and Umbilical Artery Flow Velocity Waveforms in Growth‐Retarded Fetuses
Author(s) -
Sekizuka Naoto
Publication year - 1993
Publication title -
asia‐oceania journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 50
eISSN - 1447-0756
pISSN - 0389-2328
DOI - 10.1111/j.1447-0756.1993.tb00341.x
Subject(s) - middle cerebral artery , fetus , umbilical artery , medicine , fetal distress , gestational age , gestation , cerebral arteries , cardiology , pregnancy , nuclear medicine , biology , ischemia , genetics
The resistance index (RI) of middle cerebral artery (MCA) and umbilical artery (UA) flow velocity waveforms (FVWs) were characterized retrospectively in 60 growth‐retarded fetuses in the third trimester of gestation. Reference ranges of MCA‐RI, UA‐RI, and the UA‐RI/MCA‐RI ratio to gestational age were obtained from a cross‐sectional study of 150 healthy fetuses. Growth‐retarded fetuses that developed fetal distress had lower MCA‐RIs, higher UA‐RIs, and higher UA‐RI/MCA‐RI ratios than growth‐retarded fetuses that had good outcomes. The highest sensitivity for fetal distress was observed in the UA‐RI/MCA‐RI ratio (UA‐RI/MCA‐RI 94.1%, MCA‐RI 79.4%, UA‐RI 61.8%), and the highest specificity was in MCA‐RI (MCA‐RI 92.3%, UA‐RI 84.6%, UA‐RI/MCA‐RI 76.9%). In growth‐retarded fetuses, the combined examination of MCA FVWs and UA FVWs was more useful in assessing fetal well‐being than examination of UA FVWs alone.