Open AccessMultichannel intrauterine pressure recording by means of microtransducers
Author(s) -
Ulmsten Ulf,
Andersson KarlErik
Publication year - 1979
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016347909154927
Subject(s) - medicine , cervix , fundus (uterus) , palpation , uterine contraction , uterus , gynecology , obstetrics , ophthalmology , surgery , cancer
Abstract. Intrauterine pressures (IUP) were recorded simultaneously at the fundus, the isthmus, and cervix uteri by means of three micro‐transducers (in 20 healthy, nonpregnant women, and in 5 patients with severe, primary dysmenorrhoea). Recordings were performed during the first 3 days of the menstrual cycle. Both incoordinate and coordinated myometrial activity was recognized. When coordination was present, the contraction wave as a rule started in fundus and was propagated towards the isthmus and cervix. Pinching and/or palpation of the cervix elicited retrograde contractions, i.e. the contraction wave started in the cervix and moved towards the fundus. It was frequently observed that during vigorous contractions of the fundus, the pressure increase in the isthmus was small; in some cases even a decrease in pressure occurred in this region. The pressure recording technique functioned perfectly during all recordings and seems to facilitate detailed studies of myometrial activity in the non‐pregnant uterus.