OXT and pulmonary arterial hypertension: The rates of PPH in the present study did not differ significantly in the groups receiving prophylactic carbetocin or oxytocin, irrespective of the mode of delivery; however, there was a significant difference between the two groups in the amount of mean blood loss and haemoglobin decline (pre- and post-delivery) being less in the carbetocin group when compared to the oxytocin group.