Sick sinus syndrome: the role of hypervagotonia

Vincenzo Santinelli, Massimo Chiariello, Michele Clarizia, Mario Condorelli

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A 58-year-old man with persistent symptomatic sinus bradycardia (52 beats/min) showed a markedly prolonged postpacing pause (3240 msec) after atrial pacing at a cycle of 840 msec. In addition, Wenckebach block occurred following atrial pacing at a cycle length of 700 msec. After atropine (2 mg) postpacing pauses returned to normal value and type I second-degree AV block completely reversed to 1:1 AV conduction until paced rates > 140/min. It may be that in some patients marked and persistent vagal overactivity may predispose to "intrinsic" sinus node dysfunction; in later stages, sinus node function may paradoxically result unaffected by changes in autonomic tone.

Original languageEnglish
Pages (from-to)532-535
Number of pages4
JournalInternational Journal of Cardiology
Volume5
Issue number4
DOIs
Publication statusPublished - 1984

Fingerprint

Sick Sinus Syndrome
Sinoatrial Node
Atrioventricular Block
Bradycardia
Atropine
Reference Values

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Sick sinus syndrome : the role of hypervagotonia. / Santinelli, Vincenzo; Chiariello, Massimo; Clarizia, Michele; Condorelli, Mario.

In: International Journal of Cardiology, Vol. 5, No. 4, 1984, p. 532-535.

Research output: Contribution to journalArticle

Santinelli, Vincenzo ; Chiariello, Massimo ; Clarizia, Michele ; Condorelli, Mario. / Sick sinus syndrome : the role of hypervagotonia. In: International Journal of Cardiology. 1984 ; Vol. 5, No. 4. pp. 532-535.
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