Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Results of transcranial doppler ultrasound examinations
| Vasospasm location/criterion | No. who met criterion | No. of tested | With criteriona (%) | 95% confidence interval |
|---|---|---|---|---|
| Anterior circulation | ||||
| Criterion A | 10 | 22 | 45.5 | 23.2–65.5 |
| Criterion B | 8 | 22 | 36.4 | 17.2–59.3 |
| Posterior circulation | ||||
| Criterion C | 4 | 22 | 18.2 | 5.2–40.3 |
aThe majority of patients in whom one criterion for vasospasm was identified met more than one criterion
