Oxytocicsπ₯π₯ Flashcards
What is oxytocic
Are drugs of varying chemical nature that excite uterine contractions
Eg oxytocin, ergot derivatives, prostaglandins
Origin of oxytocin
Oxytocin is synthesized in the paraventricular nuclei of the hypothalamus.
TΒ½= 3-4mins
Briefly explain the mode of action of oxytocin
During labour oxytocin increases myometrial oxytocin receptors
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Oxytocin acts through the oxytocin receptors and
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Stimulate amniotic and decidual prostaglandins production and initiate myometrial contractions
State the types/ preparations of oxytocins
- Synthetic oxytocin
Also called βpitocinβ
Which is widely used, it had oxytocin oxytocic effect but no vasopressor action.
51.U/ml - Syntometrine
Also called βsandoxβ. is a combination of 5units of syntocinon and 0.5mg ergometrine. - Desamino oxytocin
Which is more effective than oxytocin.
Buccal tablets contains 501.1
Oxytocin nasal solution contains 40units/ ml
State the routes of administration of oxytocin
IV/IM
buccal
Nasal spray
State the indications for oxytocin
Used in
1. Pregnancy
2. Labour
3. Puerperium
It can be diagnostic
Or
Therapeutic use
Therapeutically oxytocin is used for__________
1.pregnancy
2. labour
3. Puerperium
In pregnancy oxytocin is used to
- Accelerate abortion
- Stop bleeding
- Induce labour
- Facilitate cervical ripening for labor
In labour oxytocin is used to
- Active management of the 3rd stage of labor
- Expulsion of placenta as an alternative to ergometrine
In puerperium oxytocin is used to
- Minimise blood loss to control PHH
Diagnostically oxytocin is used in
- Contractions stress test
- Oxytocin sensitivity test
State the contraindications of oxytocin in pregnancy
- Grand multipara
- Contracted pelvis
- History if CS or hysterectomy
- Malpresentation
State the contraindications of oxytocin in labor
- Grand multipara
- Contracted pelvis
- History of CS or hysterectomy
- Malpresentation
- Obstructed labor
- Uncoordinate uterine action
- Fetal distress
State other contraindications of oxytocin
- Hypovolemic state
- Cardiac disease
State the dangers of oxytocin to the maternal health
- Uterine hyper stimulation
- Uterine rupture
- Water intoxication