II. Indications

III. Adverse effects

  1. Uterine hypertonicity
    1. Uterine tetanic contractions and Fetal Distress
    2. Uterine Rupture
  2. Water Intoxication (SIADH)
    1. Associated with slow infusion >24 hours

IV. Pharmacokinetics of intravenous Oxytocin

  1. Onset: 1 minute
  2. Duration: 30 minutes
  3. Half-life: <5 minutes

V. Dosing

  1. See Labor Induction
  2. Postpartum Hemorrhage prevention after Vaginal Delivery
    1. Oxytocin 10 units IM after delivery
    2. Oxytocin 10-40 units in 1 L IV fluid (NS, LR, D5W)
  3. Postpartum Hemorrhage prevention after cesarean
    1. High dose Oxytocin prevents atony
    2. Dose: Oxytocin 2667 mU/min for 30 minutes
    3. Munn (2001) Obstet Gynecol 98:386-90 [PubMed]

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Ontology: Oxytocin (C0030095)

Definition (MSH) A nonapeptide hormone released from the neurohypophysis (PITUITARY GLAND, POSTERIOR). It differs from VASOPRESSIN by two amino acids at residues 3 and 8. Oxytocin acts on SMOOTH MUSCLE CELLS, such as causing UTERINE CONTRACTIONS and MILK EJECTION.
Definition (NCI) Oxytocin (125 aa, ~13kDa) is encoded by the human OXT gene. This protein plays a role in smooth muscle contraction in both the mammary gland and uterus. Oxytocin also is involved in maternal-newborn bonding, cognition and many other psychological and physiological processes.
Definition (CSP) peptide hormone produced by the posterior lobe of the pituitary gland that induces contraction of the smooth muscle of the uterus and the myoepithelial cells of the mammary gland.
Concepts Pharmacologic Substance (T121) , Hormone (T125) , Amino Acid, Peptide, or Protein (T116)
MSH D010121
SnomedCT 12369008, 112115002
LNC LP15767-4, MTHU013002
English Ocytocin, Oxytocin, Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, cyclic 1-6 disulfide, oxytocin, oxytocics oxytocin, oxytocin (medication), OXYTOCIN, Oxytocin [Chemical/Ingredient], ocytocin, Oxytocin preparation, Oxytocin product, Oxytocin (substance), Oxytocin preparation (product), Oxytocin preparation (substance), OXT
Swedish Oxytocin
Spanish preparado de oxitocina, preparado con oxitocina (producto), preparado con ocitocina, oxitocina (producto), preparado con oxitocina, ocitocina, oxitocina (sustancia), oxitocina, preparado de oxitocina (sustancia), preparado de ocitocina, preparado de oxitocina (producto), Oxitocina
Czech oxytocin
Finnish Oksitosiini
French Oxytocine, Ocytocine
Russian 3-IZOLEITSIN,8-LEITSIN-VAZOPRESSIN, OTSITOTSIN, VAZOPRESSIN, IZOLEITSIL-LEITSIL, OKSITOTSIN, IZOLEITSIL, LEITSIL-VAZOPRESSIN, AL'FA-GIPOFAMIN, VAZOTOTSIN, LEITSIL, 3-ИЗОЛЕЙЦИН,8-ЛЕЙЦИН-ВАЗОПРЕССИН, АЛЬФА-ГИПОФАМИН, ВАЗОПРЕССИН, ИЗОЛЕЙЦИЛ-ЛЕЙЦИЛ, ВАЗОТОЦИН, ЛЕЙЦИЛ, ИЗОЛЕЙЦИЛ, ЛЕЙЦИЛ-ВАЗОПРЕССИН, ОКСИТОЦИН, ОЦИТОЦИН
Japanese オシトシン, オキシトシン
Croatian OKSITOCIN
Polish Oksytocyna, Ocytocyna
Norwegian Oxytocin, Oksytocin
Portuguese Oxitocina, Ocitocina
German Ocytocin, Oxytocin
Italian Ossitocina

Ontology: Pitocin (C0733348)

Concepts Pharmacologic Substance (T121) , Hormone (T125) , Amino Acid, Peptide, or Protein (T116)
MSH D010121
French Pitocine
English pitocin, Pitocin
Norwegian Pitocin