[Pulmonary wedge pressure and heart frequency measurements during standardized treadmill exercise for extension of left atrial function diagnosis in warmblood horses].
Abstract: In 12 healthy warmblood horses (six trained and six untrained) the pulmonary wedge pressure and heart frequency was measured at rest and during a standardised exercise test on a treadmill. The mean pulmonary wedge pressure at rest was 14.53 +/- 2.36 mmHg. There was no significant difference in pulmonary wedge pressure either at rest or during exercise between trained and untrained horses. During walking (1.8 m/s) the mean pulmonary wedge pressure was 19.62 +/- 4.03 mmHg, during trotting (4 und 5 m/s) it was between 22.38 +/- 3.92 mmHg and 25.28 +/- 3.7 mmHg. During canter (6 m/s) and gallop (8 m/s) the mean pulmonary wedge pressure increased to a level of 25.54 +/- 4.3 mmHg and 31.86 +/- 4.29 mmHg. There was a significant increase in pulmonary wedge pressure with each incremental step of the standardised treadmill test. Concerning mean heart frequency a highly significant increase could be observed at the beginning and at the end (treadmill speed of 7 and 8 m/s) of the standardised exercise test. At higher intensity of the exercise test (7 m/s and 8 m/s) untrained horses showed a significantly increased heart rate compared to trained horses. Neither at rest nor during the different exercise levels a significant correlation factor greater 0.5 between heart frequency and pulmonary wedge pressure could be observed. The increase of heart frequency and pulmonary wedge pressure during exercise showed no correlation. Between left atrial size and pulmonary wedge pressure a statistical weak correlation could be observed up to a treadmill velocity of 6 and 7 m/s.
Publication Date: 2003-08-13 PubMed ID: 12910865
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- Comparative Study
- English Abstract
- Journal Article
Summary
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This research paper examines the effects of standardized treadmill exercise on heart rate and pulmonary wedge pressure in warmblood horses, and investigates the potentially differing effects on trained and untrained horses. The study found that neither heart rate nor pulmonary wedge pressure at rest or during exercise had a significant correlation, but a weak correlation could be found between left atrial size and the pulmonary wedge pressure.
Research Methodology
- The research was conducted on 12 healthy warmblood horses, consisting of six trained and six untrained ones.
- The pulmonary wedge pressure and heart rate of these horses were measured both at rest and during a standardized treadmill exercise.
- The treadmill test involved different intensities, including walking (1.8 m/s), trotting (4 and 5 m/s), canter (6 m/s) and gallop (8 m/s).
Results on Pulmonary Wedge Pressure
- The mean pulmonary wedge pressure at rest was established to be 14.53 +/- 2.36 mmHg.
- The researchers found that the mean pulmonary wedge pressure increased with each incremental step of the treadmill test.
- However, there was no significant difference in the pulmonary wedge pressure between trained and untrained horses, either at rest or during exercise.
Results on Heart Frequency
- A highly significant increase in mean heart frequency was observed at the beginning and end of the treadmill exercise. The increment was more pronounced in untrained horses compared to trained ones, especially at higher intensities.
- But the increase of heart frequency and pulmonary wedge pressure during exercise did not correlate, with no significant correlation factor greater than 0.5 being observed.
Correlation between Left Atrial Size and Pulmonary Wedge Pressure
- The researchers also explored the correlation between left atrial size and pulmonary wedge pressure.
- A statistically weak correlation could be observed up to a treadmill velocity of 6 and 7 m/s.
Cite This Article
APA
Gehlen H, Bubeck K, Stadler P.
(2003).
[Pulmonary wedge pressure and heart frequency measurements during standardized treadmill exercise for extension of left atrial function diagnosis in warmblood horses].
Dtsch Tierarztl Wochenschr, 110(7), 280-285.
Publication
Researcher Affiliations
- Klinik für Pferde, Tierrztliche Hochschule Hannover. heidrun.gehlen@tiho-hannover.de
MeSH Terms
- Animals
- Atrial Function, Left / physiology
- Exercise Test / veterinary
- Heart Rate / physiology
- Horses / physiology
- Physical Conditioning, Animal / physiology
- Pulmonary Wedge Pressure / physiology
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