Retinal hemorrhages and traction forces in vacuum extraction.
The relationship between the traction forces used in 53 clinically indicated vacuum extractions and the incidence and degree of retinal hemorrhages observed in the neonates within 24 hours after birth was examined. A Vacuum Extractor Recorder (Type SF 30, Knick), was used to measure the traction force necessary for delivery of the fetal head. No relationship could be demonstrated between the force time integral and the appearance and grading of retinal bleedings.
Svenningsen
L
L
Dept. of Obstetrics and Gynecology, Ulleval University Hospital, Oslo, Norway.
Eidal
K
K
D000328:Adult; D055592:Biophysical Phenomena; D001703:Biophysics; D005113:Extraction, Obstetrical / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D012166:Retinal Hemorrhage / Q000209:etiology*; D014620:Vacuum Extraction, Obstetrical / Q000009:adverse effects*