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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
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Cardiovascular Ultrasound

ISSN: 1476-7120

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