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ResumenReportamos el caso de tres recién nacidos de 26, 29 y 32 semanas de edad gestacional, con pesos de 810, 1.300 y 1.670 gr, respectivamente. A quienes se les diagnosticó clínicamente conducto arterioso permeable con repercusión hemodinámica. Se confirmó con ecocardiograma transtorácico, mostrando conducto arterioso de 1.5, 3,2 y 3.9mm. Por sus condiciones clínicas inestables que contraindicaban cierre farmacológico convencional con antiinflamatorios no esteroideos (AINES), y alto riesgo quirúrgico. Se optó por cierre farmacológico con acetaminofén intravenoso a 15mg/kg una dosis cada 6 horas. Control ecocardiográfico cada 24 horas, se corroboró el cierre total del conducto arterioso a los 3, 5 y 7 días de tratamiento, respectivamente. Se les realizó enzimas hepáticas 24 horas antes y 48 horas posteriores a la administración del acetaminofén. Todos tuvieron seguimiento clínico y ecocardiográfico al mes, 3 y 6 meses. Descartando la reapertura del conducto arterioso.AbstractWe report the case of three 26, 29 and 32 week-old newborns, with a birthweight of 810, 1,300 and 1,670g respectively, who were clinically diagnosed with patent ductus arteriosus with hemodynamic repercussion. It was confirmed by means of a transthoracic echocardiogram that showed a ductus arteriosus of 1.5, 3.2 and 3.9mm. Due to their unstable clinical condition, which contraindicated conventional pharmacological closure with nonsteroidal anti-inflammatory medications (NSAIDs) and posed a high surgical risk, it was decided to perform pharmacological closure with intravenous acetaminophen at 15mg/kg, one dose every 6 hours. Echocardiographic control every 24 hours confirmed total closure of tha ductus arteriosus after 3, 5 and 7 treatment days respectively. Liver enzymes were analysed 24 hours before and 48 hours after administering acetaminophen. All of them had clinical and echocardiographic follow-ups after one, 3 and 6 months which ruled out any reopening of the ductus arteriosus

Acetaminofén intravenoso en el cierre del conducto arterioso permeable en prematuros