Open AccessA rare case of recurrent vasodepressive attacks of 2‐hours duration: Analysis of the mechanism by muscle sympathetic nerve activity recording
Author(s) -
Yatomi A.,
Iguchi A.,
Uemura K.,
Sakamoto N.,
Iwase S.,
Mano T.
Publication year - 1989
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960120311
Subject(s) - medicine , bradycardia , blood pressure , heart rate , limiting , sympathetic activity , anesthesia , cardiology , sympathetic nerve , mechanical engineering , engineering
Muscle sympathetic nerve activity was recorded in a 57‐year‐old male patient suffering from severe hypotensive attacks with bradycardia for 10 years. Continuous blood pressure recording demonstrated frequent drastic falls in pressure. Disappearance and reappearance of muscle sympathetic nerve activity coincided with the onset and termination of attacks. Awakening from sleep or emotional and/or cardiovascular stress seems to trigger hypotension. Cardiac pacemaker was not useful in limiting the attack, because right ventricular pacing caused abrupt falls in both blood pressure and heart rate.