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Table 2 Yield of conventional electrocardiographic and transthoracic echocardiographic evaluation of patients by stroke subtype

From: Left atrial volumes and associated stroke subtypes

Finding on ECG#/Echocardiogram*

All stroke patients

Cardioembolic stroke group

Atherosclerotic stroke group

P value

 

n (%)

n (%)

n (%)

 

Atrial fibrillation #

56 (8.8)

39 (69.6)

17 (30.4)

< .00

Atrial flutter #

3 (0.5)

3 (1.2)

0 (0)

0.06

Evidence of prior MI #

37 (95.8)

19 (951.4)

18 (48.6)

0.11

First degree AV block #

46 (7.3)

22 (47.8)

24 (52.2)

0.18

Left ventricular thrombus*

15 (2.4)

12 (80)

3 (20)

< .00

Left atrial thrombus*

1 (0.2)

0 (0)

1 (0.3)

0.59

Vegetation*

1 (0.2)

0 (0)

1 (0.3)

0.59

LVEF < 30%*

68 (10.7)

56 (82.4)

12 (17.6)

< .00

Global segmental hypokinesia*

108 (17.1)

74 (68.5)

34 (31.5)

< .00

  1. Legend: Atrial flutter and fibrillation on 12- Lead EKG were clearly helpful, although low yield overall at 8.8% of the entire study group (56/633), Obvious echocardiographic predictors mostly ventricular based like thrombi, vegetations, EF reduction, and hypokinesia were actually also low yield.
  2. # Findings on ECG.
  3. * Findings on Echo cardiogram.