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Forty-one variables following thoracotomy in calves
Biomaterials, Medical Devices, and Artificial Organs
|January 1, 1978
Summary
This study monitored 41 physiological variables in calves after thoracotomy. Key findings show significant post-operative changes in heart rate, hematocrit, and blood gas levels, offering insights into surgical recovery.
Area of Science:
- Cardiovascular Physiology
- Surgical Research
Background:
- Understanding physiological responses post-thoracotomy is crucial for surgical recovery.
- Comparison with left ventricular bypass pump implants provides context for surgical stress.
Purpose of the Study:
- To investigate the physiological variable responses in calves following thoracotomy over 14 days.
- To compare these responses with data from left ventricular bypass pump implants.
Main Methods:
- Seven calves underwent thoracotomy with identical protocols to pump implants, excluding drugs and pumps.
- 41 physiological variables were monitored for 14 days post-operation.
Main Results:
- 13 of 41 physiological variables showed significant changes.
- Decreases observed in heart rate, hematocrit, hemoglobin, and fibrinogen concentration.
- Increases noted in fibrinogen survival, stroke volume, cardiac output, blood pH, pCO2, pO2, plasma sodium, and urinary sodium/potassium excretion.
Conclusions:
- Thoracotomy induces significant physiological changes in calves during the 14-day post-operative period.
- Observed changes in heart rate and hematocrit are comparable to those seen with left ventricular bypass pump implants.
- Physiological shifts indicate recovery from surgical stress and potential effects of blood sampling.