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Table 2 Hemodynamics, parameters of LV size, transmitral and transaortic Doppler, and IMP with LV dysfunction and with dobutamine

From: Effect of changes in contractility on the index of myocardial performance in the dysfunctional left ventricle

  Paced LV Dysfunction Dobutamine
LV End Diastolic Volume (cc) 55 ± 7 51 ± 8
LV End Systolic Volume (cc) 32 ± 7 18 ± 5***
Stroke Volume (cc) 23 ± 6 33 ± 7***
LV Ejection fraction (%) 42 ± 3 65 ± 10***
LVSP (mm Hg) 110 ± 12 109 ± 7
MAP (mm Hg) 100 ± 10 93 ± 9
LVEDP (mm Hg) 11.8 ± 2.4 7.5 ± 2.1**
Peak +dP/dT (mm Hg/sec) 1438 ± 279 2250 ± 148***
Tau (msec) 37 ± 6 25 ± 7***
E (cm/s) 81 ± 24 111 ± 16***
A (cm/s) 55 ± 29 54 ± 19
E/A 1.9 ± 0.7 2.3 ± 0.8
Heart rate (beats/min) 102 ± 7 102 ± 7
DFP (msec) 296 ± 54 364 ± 38***
DVI (cm) 12.6 ± 2.4 16.7 ± 2.5***
Deceleration Time (msec) 148 ± 30 201 ± 46**
ICT index (msec) 55 ± 30 17 ± 10***
IRT index (msec) 63 ± 25 44 ± 22*
LV ejection time index (msec) 204 ± 22 186 ± 28*
IMP 0.59 ± 0.17 0.33 ± 0.17***
  1. Abbreviations: see table 1; A = peak atrial systolic velocity; DFP = diastolic filling period; DVI = diastolic velocity integral; E = peak rapid filling velocity; MAP = mean arterial pressure.
  2. Statistics: *P < 0.05, **p < 0.01, ***p < 0.001 vs Paced LV Dysfunction