. Author manuscript; available in PMC: 2014 Jan 26.

Published in final edited form as: J Nucl Cardiol. 2010 Dec 4;18(2):230–237. doi: 10.1007/s12350-010-9323-2

Table 2.

Study cohort myocardial perfusion imaging findings by achievement of a diagnostic heart rate (≥85% MAPHR)

Characteristic	Entire Cohort (n = 463)	Group 1 ≥85% MAPHR (n = 395)	Group 2 <85% MAPHR (n = 68)	P value^†
Exercise ST depression (n, (%))	46 (10.0)	42 (10.6)	4 (5.9)	.226
EDVI (n, (%))	47.0 (40.0, 55.0)	46.0 (39.0, 54.0)	55.0 (43.0, 66.0)	< .001
ESVI (n, (%))	14.0 (10.0, 18.0)	13.0 (10.0, 18.0)	18.0 (12.0, 25.0)	.004
Normal perfusion (n, (%))	417 (90.1)	365 (92.4)	52 (76.5)	< .001
Any defect reversibility (n, (%))	28 (6.1)	16 (4.1)	12 (17.7)	< .001
Fixed defect (n, (%))	37 (8.0)	22 (5.6)	15 (22.1)	< .001
≥10% LV ischemia (n, (%))	3 (0.6)	2 (0.5)	1 (1.5)	.360
LVEF (median (25th, 75th))	65.0 (60.0, 69.0)	65.0 (61.0, 69.0)	62.0 (56.0, 67.0)	.003

EDVI, End-diastolic volume index; ESVI, end-systolic volume index; LV, left-ventricular; LVEF, left-ventricular ejection fraction; MAPHR, maximum age-predicted heart rate.

^†

Values < 0.05 are considered statistically significant.