Cluster headache and right-to-left shunt on contrast transcranial Doppler: a case-control study.
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).
Department of Neuroscience, Ophthalmology and Genetics, University of Genova, Via De Toni, 5, 16132 Genova, Italy. cfinocchi@neurologia.unige.it
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Finocchi
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Del Sette
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Angeli
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Rizzi
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Gandolfo
D000328:Adult; D001775:Blood Circulation; D016022:Case-Control Studies; D003027:Cluster Headache / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging; D015995:Prevalence; D017585:Ultrasonography, Doppler, Transcranial / Q000379:methods; D014636:Valsalva Maneuver