Measurement of cardiac dimensions with two-dimensional echocardiography in the living horse.

K. Vörös, J. R. Holmes, C. Gibbs

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Two-dimensional echocardiography (2DE) was performed on 22 unsedated Thoroughbred and part Thoroughbred horses weighing between 411 and 650 kg to establish normal reference values for 2DE measurements. Animals stood during examinations performed with a 3.5 MHz mechanical sector transducer using various transducer positions and tomographic planes. Right ventricular diameter (RVD), ventricular septal thickness (VSTh), aortic diameter (AoD), area of the chordal lumen of the left ventricle (CTA), left ventricular diameter (LVD) and left atrial diameter (LAD) were determined at ventricular end-diastole (Ed) and/or end-systole (Es). Fractional shortening (FS) of the left ventricle and end-systolic left atrial to aortic ratio (LAD-Es:AoD-Es) also were calculated. Echocardiographic data were related to body weight by linear regression analysis. Intra-observer variability was checked in five horses by measuring each parameter during each of 10 consecutive cardiac cycles. The 2DE data were compared with M-mode values in published reports. In the 18 horses whose weight did not exceed 551 kg, repeatable recordings of good quality were obtained, and 2DE measurements could be made using intra-cardiac reference points. Increasing body weight proved to impose substantial limitations on measurements taken with the available machine and transducer. This problem might be overcome by using probes of lower frequency or equipment with higher quality image display at greater depth. The following parameters correlated significantly to body weight: VSTh-Es (r = 0.69; P less than 0.01). AoD-Es (r = 0.64; P less than 0.01) and CTA-Es (r = 0.84; P less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)

Original languageEnglish
Pages (from-to)461-465
Number of pages5
JournalEquine Veterinary Journal
Volume23
Issue number6
Publication statusPublished - Nov 1991

Fingerprint

Systole
echocardiography
Horses
Echocardiography
horses
Transducers
transducers (equipment)
Body Weight
Heart Ventricles
Reference Values
body weight
Diastole
Observer Variation
Linear Models
shortenings
normal values
probes (equipment)
Regression Analysis
regression analysis
Weights and Measures

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Measurement of cardiac dimensions with two-dimensional echocardiography in the living horse. / Vörös, K.; Holmes, J. R.; Gibbs, C.

In: Equine Veterinary Journal, Vol. 23, No. 6, 11.1991, p. 461-465.

Research output: Contribution to journalArticle

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