Hemodynamic Effects of Methamphetamine and General Anesthesia

Table 3

Medication usage by the three study groups.

	No meth (N = 159)		Subacute UDS (N = 69)		Acutely UDS positive (N = 137)
	N	Mean ± SD	N	Mean ± SD	N	Mean ± SD
Amount of phenylephrine (all patients)	45	215.6 ± 199.9	38	527 ± 613.6	75	567.3 ± 652.5	0.0028
Amount of phenylephrine (patients who received phenylephrine)	8	550 ± 277.7	17	951.5 ± 718.5	39	905.1 ± 761.4
Amount of ephedrine (all patients)	14	8.6 ± 4.1	11	14.3 ± 10.1	12	29.2 ± 28.8	0.0162
Amount of ephedrine (patients who received ephedrine)	3	See footnote	7	17.9 ± 11.1	9	35.6 ± 30.9
Amount of epinephrine (all patients)	0	Not applicable	0	Not applicable	2	See footnote	Not applicable
Amount of epinephrine (patients who received epinephrine)	0	Not applicable	0	Not applicable	2	See footnote
Amount of vasopressin (all patients)	0	Not applicable	0	Not applicable	3	See footnote	Not applicable
Amount of vasopressin (patients who received vasopressin)	0	Not applicable	1	Not applicable	3	See footnote

Descriptive statistics were not reported for subgroups with 3 or fewer observations.