Cardiac output measurements using sonomicrometer crystals on the left ventricle at rest and exercise.

John Pascoe, A. Hiraga, S. Hobo, E. K. Birks, T. B. Yarbrough, T. Takahashi, T. Hada, H. Aida, Eugene Steffey, James H Jones

Research output: Chapter in Book/Report/Conference proceedingChapter

12 Scopus citations

Abstract

Eight horses were fitted surgically with 8 ultrasonic sonomicrometer crystals each attached to their left ventricular pericardia and a left atrial catheter. Three horses returned to treadmill performance with a maximum rate of oxygen consumption similar to their presurgical values. These horses were evaluated to determine how well sonomicrometer estimates of cardiac output agreed with those obtained by a steady-state method, the Fick principle. Variance between the 2 was similar to the coefficient of variation (approximately 12.5%) of the Fick estimates. We conclude that left ventricular sonomicrometer measurements in horses appear to give a reasonable estimate of ventricular dimensions and can, therefore, be used potentially to evaluate such variables as diastolic flow.

Original languageEnglish (US)
Title of host publicationEquine veterinary journal. Supplement
Pages148-152
Number of pages5
Volume30
StatePublished - 1999

Fingerprint Dive into the research topics of 'Cardiac output measurements using sonomicrometer crystals on the left ventricle at rest and exercise.'. Together they form a unique fingerprint.

  • Cite this

    Pascoe, J., Hiraga, A., Hobo, S., Birks, E. K., Yarbrough, T. B., Takahashi, T., Hada, T., Aida, H., Steffey, E., & Jones, J. H. (1999). Cardiac output measurements using sonomicrometer crystals on the left ventricle at rest and exercise. In Equine veterinary journal. Supplement (Vol. 30, pp. 148-152)