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Table 3 Comparison of patients with (group 1) and without (group 2) dynamic intraventricular obstruction.

From: Dobutamine stress echocardiography for assessing the role of dynamic intraventricular obstruction in left ventricular ballooning syndrome

 

Group 1

Group 2

p-value

Age (years)

67 ± 9

68 ± 9

ns

Hypertension (%)

85

73

ns

IVS thickness (mm)

11.6 ± .6

9.8 ± .3

<0.01

PW thickness (mm)

9.8 ± .6

8.7 ± .1

ns

Septal hypertrophy (%)

71

7

<0.01

BPs basal (mmHg)

131 ± 29

129 ± 27

ns

BPd basal (mmHg)

74 ± 10

69 ± 14

ns

HR basal (b/min)

70 ± 8

66 ± 12

ns

HR dobutamine (b/min)

101 ± 18

108 ± 18

ns

LVEDV basal (ml)

99 ± 29

99 ± 28

ns

LVEDV dobutamine (ml)

81 ± 29

72 ± 32

ns

LVESV basal (ml)

44 ± 19

48 ± 14

ns

LVESV dobutamine (ml)

34 ± 23

40 ± 24

ns

LVEF basal (%)

54 ± 5

48 ± 14

ns

LVEF dobutamine (%)

61 ± 16

67 ± 7

ns

WMSI basal

1.44 ± .4

1.29 ± .4

ns

WMSI dobutamine

1.62 ± .4

1.08 ± .4

<0.01

  1. The patient with dynamic obstruction in basal conditions is included in group 1.
  2. Abbreviations: IVS = interventricular septum, PW = Posterior wall; BPs = Systolic blood pressure; BPd = Diastolic blood pressure; HR = Heart rate; LVEDV = Left ventricular end-diastolic volume; LVESV = Left ventricular end systolic volume; LVEF = Left ventricular ejection fraction; WMSI = Wall motion score index.