Table 1.
Characteristics of survey respondents from the United States and Canadaa
| United States (n = 143) |
Canada (n = 139) |
Total (n = 282) |
P value | |
|---|---|---|---|---|
| Base specialty, % | ||||
| Neurology | 55% | 2% | 29% | <0.0001 |
| Neurosurgery | 23% | 15% | 19% | |
| Anesthesiology | 10% | 27% | 19% | |
| Internal medicine | 7% | 37% | 22% | |
| Emergency medicine | 4% | 6% | 5% | |
| Surgery | 1% | 12% | 6% | |
| Years of experience, % | ||||
| 0-3 | 34% | 17% | 26% | 0.04 |
| 4-7 | 15% | 24% | 20% | |
| 8-10 | 10% | 14% | 11% | |
| 11-15 | 22% | 21% | 21% | |
| 16-20 | 7% | 10% | 9% | |
| >20 | 13% | 14% | 13% | |
| Monitoring tools, % | ||||
| CT angiography | 91% | 88% | 90% | 0.50 |
| CT perfusion | 69% | 24% | 46% | <0.0001 |
| Transcranial Doppler | 89% | 63% | 76% | <0.0001 |
| PbtO2 probes | 34% | 6% | 21% | <0.0001 |
| Microdialysis catheters | 8% | 1% | 4% | 0.005b |
| Continuous CBF probes | 14% | 0 | 7% | <0.0001b |
| Jugular bulb oximetry | 13% | 12% | 13% | 0.79 |
| MRI perfusion | 33% | 17% | 25% | 0.002 |
| None of above | 3% | 4% | 3% | 0.75b |
| Use of institutional transfusion protocol, % | 55% | 50% | 52% | 0.42 |
aCT, computed tomography; PbtO2, brain tissue oxygen tension; CBF, cerebral blood flow; MRI, magnetic resonance imaging; bFisher's exact test.