title: Progression of first degree atrioventricular block to second degree Mobitz type I block during spinal anesthesia associated with induced hypertension.
abstract: A case is presented in which an elderly patient with preexisting first degree atrioventricular (AV) block progressed to second degree Mobitz Type I AV block during spinal anesthesia and associated with hypertension induced by a pure alpha 1 agonist. Second degree AV block caused by increased vagal tone was transient, which resolved as the blood pressure normalized. Hypotension due to spinal anesthesia treated with pure alpha 1 agonist can increase AV block in patient with pre-existing first degree heart block.
authors.affiliation: Armed Forces Hospital, Riyadh, Saudi Arabia.
authors.forename: J S
authors.initials: JS
authors.lastname: Anwari
authors.forename: S A
authors.initials: SA
authors.lastname: Qureshi
mesh_terms: D000316:Adrenergic alpha-Agonists / Q000009:adverse effects; D000368:Aged; D000369:Aged, 80 and over; D000775:Anesthesia, Spinal / Q000009:adverse effects*; D018450:Disease Progression; D006327:Heart Block; D006801:Humans; D006973:Hypertension / Q000139:chemically induced* / Q000150:complications; D008297:Male; D014630:Vagus Nerve / Q000502:physiology
chemical_list: D000316:Adrenergic alpha-Agonists