Early abnormal transient hyperemic response test can predict delayed ischemic neurologic deficit in subarachnoid hemorrhage

The Ultrasound Journal

Table 2 Abnormal THRT is predictive of subsequent vasospasm development

	Vasospasm	Asymptomatic or no vasospasm	Total
Abnormal THRP	5	2	7
Normal THRP	1	7	8
Total	6	9	15

As many as 83% patients who developed vasospasm had an abnormal THRP (p = 0.0406, Fisher’s exact test, n = 15)