Single intravenous dose ondansetron induces QT prolongation in adult emergency department patients: a prospective observational study

Table 3 Association of qualitative variables with QTc intervals over 480 msec at 60 min following ondansetron administration

	Geriatric (age > 65)		Gender		Past medical history †		Opium use		Ondansetron dose
	Yes	No	Male	Female	Yes	No	Yes	No	4 mg	8 mg
QTc60 ≤ 480 msec	22*	56	32	46	10	68	14	64	48 (86%)	30 (60%)
QTc60 > 480 msec	6	22	16	12	4	24	8	20	8 (14%)	20 (40%)
P value	0.21		0.14		0.67		0.35		0.04*

†Past medical history: Diabetes mellitus and chronic obstructive pulmonary disease
*All values are number of patients in each group
**Statistical significance

ISSN: 1865-1380