Table 3 Association between embolic, hypoperfusion, and mixed watershed infarction (by MRI perfusion and transcranial Doppler) and patients’ risk factors (chi-square test)
| Â | Etiology | P | Significance | ||||||
|---|---|---|---|---|---|---|---|---|---|
Embolic only | Hypoperfusion only | Mixed | |||||||
N | % | N | % | N | % | ||||
Stroke/TIA | Yes | 0 | 0.0 | 11 | 32.4 | 1 | 12.5 | 0.112 | Non-significant |
No | 8 | 100.0 | 23 | 67.6 | 7 | 87.5 | |||
Wall contractility by transthoracic echo | Normal | 1 | 12.5 | 28 | 82.4 | 3 | 37.5 | 0.008 | Highly significant |
Segmental hypokinesia | 1 | 12.5 | 1 | 2.9 | 2 | 25.0 | |||
Global hypokinesia | 6 | 75.0 | 5 | 14.7 | 3 | 37.5 | |||
Thrombus detected by TEE | Yes | 4 | 50.0 | 0 | 0.0 | 2 | 25.0 | 0.001 | Highly significant |
No | 4 | 50.0 | 34 | 100.0 | 6 | 75.0 | |||
Plaque | Yes | 1 | 12.5 | 16 | 47.1 | 6 | 75.0 | 0.057 | Non-significant |
No | 7 | 87.5 | 18 | 52.9 | 2 | 25.0 | |||
Plaque type by carotid duplex | Stable | 0 | 0.0 | 8 | 50.0 | 3 | 50.0 | 1 | Non-significant |
Unstable | 1 | 100.0 | 8 | 50.0 | 3 | 50.0 | |||
≥ 50% stenosis/occlusion | Yes | 1 | 12.5 | 7 | 20.6 | 5 | 62.5 | 0.053 | Non-significant |
No | 7 | 87.5 | 27 | 79.4 | 3 | 37.5 | |||