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Biomedical subjects

H J Ehrlein

Publications and source records attributed to H J Ehrlein.

At least 73 records · Page 4Linked to original sources
PubMed1978

Heart rate during a defined exercise test in horses with heart and lung diseases.

During a gradually increasing exercise test heart rates were determined in healthy animals and in 2 groups of sick horse. These included 31 animals with a chronic pulmonary disorder and 5 with chronic heart disease. The alteration in heart rate was correlated with the clinical signs exhibited. In the horses with lung disease there was a close correlation between the stage of the diseases and the heart rate during the exercise test. In 3 animals with heart valve disease there was no apparent difference in heart rate compared with healthy horses. On the other hand the exercising heart rate of horses with atrial fibrillation showed a significant increase. The recovery rate of pulse and respiration after a 20 min trot did not show any correlation with the stage of disease or the pulse and respiration after a 20 min trot did not show any correlation with the stage of disease or the results of gradually stepping up the exercise in horses with lung disease.

Animals↗
PubMed1977

Effect of exercise on systemic blood pressure and heart rate in horses.

Carotid loops were prepared in 3 horses several months prior to the experiments. Systemic blood pressure was recorded at rest and during exercise by insertion of a plastic cannula into the carotid artery. The pressure transducer was fixed at the neck of the animal. The blood pressure signal was transmitted by telemetry. When the horses were standing under the rider, the following results were obtained: heart rate 38 +/- 5 beats-min-1, systolic pressure 115 +/- 15, disstolic pressure 83 +/- 10, mean pressure 97 +/- 12, and pulse pressure 32 +/- 9 mm Hg. During steady gallop at a mean speed of 548 +/- 90 m-min-1, heart rate rose to 184 +/- 23 beats-min-1, systolic pressure to 205 +/- 23, diastolic pressure to 116 +/- 12, mean pressure to 160 +/- 20 and pulse pressure to 89 +/- 19 mm Hg. These values remained stable throughout the exercise period of 5-6 min. When the horses were exercised at stepwise increasing speed from walk through trot to gallop, both the mean arterial blood pressure and the pulse pressure rose in proportion to the running speed.

Animals↗