title: Myometrial activity and endometrial blood flow in an ectopic pregnancy.
abstract: Myometrial activity and endometrial blood flow were recorded in a patient with uterine haemorrhage and lower abdominal pain, who turned out to have a tubal pregnancy. The uterine contractions had an amplitude sometimes exceeding 400 mmHg and a duration up to 3.5 min. Thus, strong uterine contractions can appear during pregnancy without the presence of a gestational sac within the uterus. This is contrary to the assumption that processes in the foetal membranes initiate the sequence of events leading to abortion or labour.
mesh_terms: D000005:Abdomen; D000328:Adult; D004717:Endometrium / Q000098:blood supply*; D005260:Female; D006801:Humans; D009215:Myometrium / Q000503:physiopathology*; D010146:Pain / Q000188:drug therapy; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000188:drug therapy / Q000503:physiopathology*; D011312:Pressure; D013726:Terbutaline / Q000627:therapeutic use; D014590:Uterine Contraction / Q000187:drug effects; D014592:Uterine Hemorrhage / Q000188:drug therapy / Q000503:physiopathology; D014599:Uterus / Q000503:physiopathology*
chemical_list: D013726:Terbutaline