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{{Short description|Combination drug}} |
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”’Oxytocin/ergometrine”’ (trade name ”’Syntometrine”’) is an [[obstetric]] [[combination drug]]. The components are synthetically produced [[oxytocin]], a human hormone produced in the [[hypothalamus]], and [[ergometrine]], an [[alpha-adrenergic]], [[dopaminergic]] and serotonin (5-HT<sub>2</sub>) receptor agonist. |
”’Oxytocin/ergometrine”’ (trade name ”’Syntometrine”’) is an [[obstetric]] [[combination drug]]. The components are synthetically produced [[oxytocin]], a human hormone produced in the [[hypothalamus]], and [[ergometrine]], an [[alpha-adrenergic]], [[dopaminergic]] and serotonin (5-HT<sub>2</sub>) receptor agonist. |
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Both substances cause the uterus to contract. An injection of Syntometrine is given in the [[third stage of labor]], just after the birth of the child to facilitate delivery of the [[placenta]]<ref name=”netdoctor”>[http://www.netdoctor.co.uk/medicines/100002520.html NetDoctor.co.uk > Syntometrine] Last updated 15.9.2005</ref> and to prevent [[postpartum hemorrhage]]<ref name=”netdoctor” /> by causing [[smooth muscle]] tissue in the [[blood vessel]] walls to narrow, thereby reducing blood flow. |
Both substances cause the uterus to contract. An injection of Syntometrine is given in the [[third stage of labor]], just after the birth of the child to facilitate delivery of the [[placenta]]<ref name=”netdoctor”>[http://www.netdoctor.co.uk/medicines/100002520.html NetDoctor.co.uk > Syntometrine] Last updated 15.9.2005</ref> and to prevent [[postpartum hemorrhage]]<ref name=”netdoctor” /> by causing [[smooth muscle]] tissue in the [[blood vessel]] walls to narrow, thereby reducing blood flow. |
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Latest revision as of 21:43, 26 November 2025
Combination drug
Pharmaceutical compound
Oxytocin/ergometrine (trade name Syntometrine) is an obstetric combination drug.[1] The components are synthetically produced oxytocin, a human hormone produced in the hypothalamus, and ergometrine, an alpha-adrenergic, dopaminergic and serotonin (5-HT2) receptor agonist.
Both substances cause the uterus to contract. An injection of Syntometrine is given in the third stage of labor, just after the birth of the child to facilitate delivery of the placenta[2] and to prevent postpartum hemorrhage[2] by causing smooth muscle tissue in the blood vessel walls to narrow, thereby reducing blood flow.
Syntometrine should not be used in patients with:
It should be used with caution in patients with:
Possible side effects include:
A health care provider should be notified immediately if there are any side effects. They may be signs of allergy or of too much fluid associated with high doses or long
infusions.[3]
Prostaglandins increase the effect of oxytocin and vice versa. The contractions should be carefully monitored if oxytocin is given after a prostaglandin dose.
Syntometrine may enhance the blood pressure raising effect of vasoconstrictors (medicines given to constrict the blood vessels).
Some inhaled anaesthetics used for general anesthesia, such as cyclopropane and halothane, may reduce the effect of oxytocin and ergometrine. There may also be an increased risk of a drop in blood pressure and abnormal heart beats if oxytocin is given with these general anesthetics.

