Myocardial dysfunction during paroxysmal supraventricular tachycardia

M. A. Warnowicz, B. A. Santucci, H. G. Bucheleres, P. Denes

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Paroxysmal supraventricular tachycardia (PSVT) is associated with altered hemodynamics. We describe the echocardiographic features of myocardial dysfunction during a prolonged episode of PSVT in an 11-yr-old male. The abnormality of the phases of cardiac activity presented as a markedly prolonged left ventricular systole (320 msec) and isovolumic relaxation phase (220 msec) and a shortened and delayed diastolic filling period (140 msec). These abnormalities reverted to normal immediately after spontaneous conversion to sinus rhythm. Propranolol, which was used to prevent PSVT in this child, may have been involved in the mechanism of the altered mechanical events.

Original languageEnglish (US)
Pages (from-to)421-426
Number of pages6
Issue number2
StatePublished - 1981

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)


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