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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.