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Safety Monitoring for Obstructive Hypertrophic Cardiomyopathy During Exercise

Atsuko Nakayama1, Tomoko Nakao2, Katsuhito Fujiu1

  • 1Department of Cardiovascular Medicine, The University of Tokyo, Tokyo, Japan.

CJC Open
|December 11, 2020
PubMed

Insights

Hypertrophic cardiomyopathy (HCM) patients need safe exercise monitoring. Noninvasive cardiac output monitoring detected hemodynamic changes during stress, aiding early detection of exercise-induced obstruction in HCM.

Area of Science:

  • Cardiology
  • Cardiovascular Physiology

Background:

  • Intensive exercise is contraindicated for hypertrophic cardiomyopathy (HCM) patients due to sudden death risk.
  • Exercise can induce left-ventricular outflow tract obstruction even in patients without resting obstruction.

Observation:

  • A case study involving a female HCM patient undergoing stress echocardiography.
  • Hemodynamics were monitored noninvasively using cardiac output monitoring.
  • Stroke volume decline preceded the rise in left-ventricular outflow tract pressure gradient.

Findings:

  • Noninvasive cardiac output monitoring effectively tracked hemodynamic changes during exercise in an HCM patient.
  • Early detection of stroke volume changes can precede significant pressure gradient elevation.

Implications:

  • This noninvasive method offers a potential tool for safe exercise monitoring in HCM patients.
  • It may help guide exercise recommendations and risk stratification for HCM individuals.
  • Further research can validate this technique for broader clinical application in managing HCM.

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