Table 3.

Description of Patients with Prolonged QTc

	Demographic information	QTc (msec)	Quetiapine dose	Other QTc prolonging medications	Intervention	Outcome
Patient 1	Toddler with respiratory failure in the setting of a viral infection	466	4 mg/kg/day	None	None	Repeat QTc 382
Patient 2	School-age child with history of bone marrow transplant, and severe hypoxemic respiratory failure	548	3.3 mg/kg/day	Ondansetron	None	Repeat QTc 498. Patient died prior to next assessment after parents requested withdrawal of support.
Patient 3	Adolescent with respiratory failure in setting of asthma exacerbation	456	6.3 mg/kg/day	None	Reduction of dose	Repeat QTc 437 on weaning dose of 4.5mg/kg/day