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Table 1 Characteristics of patients with wide and narrow QRS

From: Feature tracking measurement of dyssynchrony from cardiovascular magnetic resonance cine acquisitions: comparison with echocardiographic speckle tracking

Variable

Patients with wide QRS width

(≥ 120 ms)

Patients with narrow QRS width

(< 120 ms)

P

Number of patients

55

17

Age, yrs

54 ± 15

62 ± 14

0.06

Gender, Male (%)

37 (67%)

10 (59%)

0.07

Ischemic Heart Disease (%)

12 (23%)

8 (47%)

0.09

QRS width, ms

148 ± 24

95 ± 15

< .001

Cardiac magnetic resonance

   

 LV end-diastolic volume, cm3

188 ± 73

259 ± 110

0.003

 LV end-systolic volume, cm3

103 ± 71

187 ± 98

< 0.001

 Ejection fraction,%

49 ± 16

30 ± 17

< 0.001

Feature Tracking CMR Anteroseptal to posterior delay

230 ± 94

77 ± 92

< 0.001

Speckle tracking Echocardiography Anteroseptal to posterior delay

242 ± 101

75 ± 88

< 0.001

  1. CMR cardiovascular magnetic resonance, LV left ventricular.