Why the study?
Do patients with migraine have altered cardiovascular reflex function compared to healthy volunteers?
Do patients with migraine have altered cardiovascular reflex function compared to healthy volunteers?
Patients with migraine exhibit sympathetic hypofunction and altered cardiovascular reflexes compared to healthy controls.
Suggests autonomic involvement in migraine; hypothesis-generating and requires prospective validation before clinical use.
We have investigated the autonomic function of 75 patients with migraine by examining cardiovascular reflex function. The results were compared with those of 78 healthy volunteers. Measurements were made between attacks. Patients with migraine showed a smaller heart-rate response to deep breathing but a greater heart-rate response and higher blood pressure to standing when compared to controls. Migraine patients had a higher percentage of established sympathetic lesions (51% vs 17%) and severe (25% vs 5%) or atypical (24% vs 11.5%) global autonomic dysfunction. No significant differences were found among patients with migraine with aura, migraine without aura, and migraine with prolonged aura. Our findings indicate that patients with migraine have sympathetic hypofunction.
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Martín et al. (1992) studied this question.
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