title: Midtrimester abortion with urea, prostaglandin F2alpha, laminaria, and oxytocin. A new regimen.
abstract: This study was undertaken to determine a method of amino infusion that would 1) produce abortion within 12 hours; 2) be relatively free from risks of coagulapathy and electrolyte imbalance; 3) not result in delivery of liveborns; and 4) incur minimal gastrointestinal side effects from prostaglandin. Patients were randomly assigned to 1 of 3 groups unless history and examination revealed a contraindication to the use of prostaglandin. Three infusions were used: prostaglandin alone, urea alone, and a combination of urea and prostaglandin. All patients had pre-infusion laminaria inserted and all received oxytocin following infusion. There was a significant difference in instillation to abortion time when comparing the three groups and a marked reduction in gastrointestinal side effects using a lower dosage of prostaglandin. The synergistic effect of urea and prostaglandin F2alpha, previously demonstrated was further enhanced by the use of oxytocin and laminaria. This produced a mean instillation to abortion time significantly shorter than previous studies have shown and, indeed, offers a means of second trimester abortion suitable for use in ambulatory surgery facilities, precluding the high cost of inpatient care.
mesh_terms: D000028:Abortion, Induced; D000650:Amnion; D003967:Diarrhea / Q000139:chemically induced; D004357:Drug Synergism; D005260:Female; D006801:Humans; D007263:Infusions, Parenteral; D009325:Nausea / Q000139:chemically induced; D010121:Oxytocin / Q000008:administration & dosage*; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011460:Prostaglandins F / Q000008:administration & dosage* / Q000009:adverse effects; D012624:Seaweed; D013997:Time Factors; D014508:Urea / Q000008:administration & dosage* / Q000009:adverse effects; D014839:Vomiting / Q000139:chemically induced
chemical_list: D011460:Prostaglandins F; D010121:Oxytocin; D014508:Urea