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Management of a case of uterine scar pregnancy by transabdominal potassium chloride injection

Different therapeutic options have been suggested in cases of ectopic pregnancies located in a Cesarean scar: hysterectomy, hysterotomy, conservative management with methotrexate or direct injection of methotrexate into the gestational sac. We present a case of the diagnosis of a viable pregnancy located in a Cesarean scar and treatment by direct potassium chloride (KCl) injection into the embryo. Follow-up was by serial monitoring of human chorionic gonadotropin (β-hCG) levels and ultrasound examination. After 12 weeks, βhCG levels were below 2 mU/mL and only a small lesion was visible by ultrasound. Direct injection of KCl may be a new therapeutic option with minimal side effects for some types of ectopic pregnancies.