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Repeat Catheter Angiography in Patients with Aneurysmal-Pattern Angiographically Negative Subarachnoid Hemorrhage.
Cody L Nesvick
1 ,
Soliman Oushy
2 ,
Krishnan Ravindran
3 ,
Lorenzo Rinaldo
2 ,
Panagiotis Kerezoudis
2 ,
Eelco F Wijdicks
4 ,
Giuseppe Lanzino
2 ,
Alejandro A Rabinstein
4
February 2022
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Abstract
A significant proportion of patients with subarachnoid hemorrhage have a normal cerebral angiogram. Patients with angiographically negative subarachnoid hemorrhage (anSAH) with either perimesencephalic- (panSAH) or aneurysmal-pattern hemorrhage (aanSAH, also known as diffuse anSAH) have an excellent prognosis, but only if underlying vascular abnormalities are completely excluded. The rate of occult aneurysms in patients with aanSAH varies widely across studies. The purpose of this study was to quantify the value of repeat DSA in these patients.