Abstract

Midodrine is an oral vasopressor option that allows for discontinuation of intravenous vasopressors for patients with cardiovascular conditions. It does not have a US Food and Drug Administration-labeled indication for use in children, and there is a paucity of literature in patients ≤6 years of age. This case series describes 2 infants with complex congenital heart diseases initiated on midodrine for augmentation of systolic (SBP) or diastolic blood pressure (DBP) to increase coronary perfusion. Case 1 was initiated on midodrine on hospital day 19 at a dose of 0.5 mg (0.17 mg/kg) enterally every 8 hours that was eventually increased to 1 mg (0.33 mg/kg) every 8 hours. Case 2 was initiated on midodrine on hospital day 15 at a dose of 2.5 mg (0.49 mg/kg) enterally every 8 hours, and this was decreased to 1.25 mg (0.25 mg/kg) every 8 hours due to high SBP. Both patients were discharged home on midodrine; other than the initially high SBP for Case 2, no other adverse drug events were noted. While midodrine was effective based on clinical response in these two infants, additional studies are needed due to the lack of safety and efficacy in children <6 years of age.

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