Fetal Ductus Arteriosus Restriction in the Final Third of Pregnancy Due To Acetaminophen Consumption

Abstract

A case is reported of a pregnant woman who was diagnosed with renal colic at 20 weeks of gestation. She needed various admissions in hospital and double J stent placement by Urology Service and she was treated with acetaminophen by both intravenous and oral ways. Obstetric ultrasound scans were normal throughout gestation until week 32, when she was admitted to hospital again for suspected renal colic. She was treated with acetaminophen. In that moment, ultrasound findings are consisted with early ductus arteriosus constriction. Acetaminophen was decided to be stopped and changes reduced in the first 48 hours and they almost disappeared after one week of medication withdrawal. Pregnancy came to term and the child was born normal. Restricting non-opioid analgesics was recommended in the third quarter, as well as following up with ductus arteriosus doppler in cases in which it is required to use them.