Safety Profile of Misoprostol for Obstetrical Indications
SAFETY PROFILE OF MISOPROSTOL FOR OBSTETRICAL INDICATIONS Lenita Wannmacher INTRODUCTION Cervical ripening, full‐term labour induction, and postpartum haemorrhage (PPH) are obstetric conditions that require proper and early interventions in order to save maternal and fetal lives. These interventions include pharmacological (uterotonic agents, mainly) and non‐pharmacological methods that have been tested and compared throughout the past decade. Regarding injectable uterotonic medicines (such as oxytocin, ergometrine, syntometrine, prostaglandins, and, more recently, carbetocin), factors limiting their use in low‐resource settings have been their cost, instability at high ambient temperatures, and difficult requirements of administration. In poor and rural settings, birth attendant skills are limited, transport facilities are inadequate, and injectable uterotonics and blood are hardly available. In contrast, misoprostol, a synthetic prostaglandin E1 analogue, presents low cost, storage at room temperature, and widespread availability. Misoprostol could also be easily administered by unskilled attendants or the women themselves, thus making them available for women giving birth at home or in isolated areas. These are benefits that make it particularly appealing for developing poor countries.1 Despite the built evidence of efficacy, induction of full‐term labour in women with a live fetus, as well as prevention and treatment of PPH, remains as a major challenge in modern obstetrics. Safety profile of misoprostol is still a matter of concern, especially relating to doses and routes used for the mentioned purposes.2 Misoprostol can be effectively administered vaginally, rectally, bucally, orally and sublingually. Pharmacokinetic studies have demonstrated the properties of misoprostol after various routes of administration. The rate of absorption varies considerably between routes, and care must be taken to use the correct dose and frequency for the specified route.
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