Atrial contribution to cardiac output in complete heart block

Philip Samet, William H. Bernstein, David A. Nathan, Alfredo López

Research output: Contribution to journalArticle

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Cardiac output studies were performed in 6 patients with complete heart block during four kinds of ventricular rhythm. These include ventricular or His-bundle pacing at the control rate, right ventricular outflow tract catheter electrode pacing, and both synchronous and atrial synchronous pacing by means of a Cordis Synchrocor unit. The latter two rhythms are defined as those with P wave, ventricular stimulus and QRS complex sequences, and atrial stimulus, P wave, ventricular stimulus and QRS complex sequences, respectively. Thirty-four paired observations were made during equal atrial and ventricular pacing rates in these patients. The importance of atrial systole for maintenance of cardiac output is clearly demonstrated by these data.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalThe American Journal of Cardiology
Issue number1
StatePublished - Jul 1965


ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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