Table 1.

Group characteristics

Control (n = 22)Impaired LVEF (n = 11)P
Age, yr56 (9)59 (7)NS
LVEF, %72 (10)39 (7)<0.001
EDV, ml167 (48)217 (51)NS
ESV, ml47 (26)130 (30)<0.001
LVEDP, mmHg16 (6)24 (6)<0.05
HR, beats/min75 (12)68 (9)NS
τ, ms52 (17)87 (20)<0.001
  • Values are means (SD) of 22 controls (11 male and 11 female) and 11 subjects (8 male and 3 female) with impaired left ventricular (LV) ejection fraction (LVEF). EDV and ESV, end-diastolic and end-systolic volume; LVEDP, LV end-diastolic pressure; HR, heart rate; τ, isovolumic relaxation time constant; NS, not significant.