Cluster headache and right-to-left shunt on contrast transcranial Doppler: a case-control study.
case_control · Level III
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Abstract
The authors evaluated the prevalence of right-to-left shunt in 40 subjects with cluster headache (CH) vs 40 subjects without primary headaches or cerebrovascular disease. The diagnosis of shunt was made by means of transcranial Doppler with contrast medium. A shunt was found in 17 CH patients (42.5%) and in 7 controls (17.5%) (p = 0.029; OR = 3.48; 95% CI = 1.13 to 10.69).
Medical subject headings
- Cluster Headache
- Heart Septal Defects, Atrial