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Related Experiment Videos

Pulsus alternans during halothane anesthesia in a dog

J E Bailey1, W W Muir, R T Skarda

  • 1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, Columbus 43210-1089.

Veterinary Surgery : VS
|January 1, 1993
PubMed
Summary

Pulsus alternans, a condition causing alternating pulse strength, was observed in an anesthetized dog during surgery. Changing the anesthetic from halothane to isoflurane resolved this cardiac arrhythmia.

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Area of Science:

  • Veterinary Anesthesiology
  • Cardiovascular Physiology in Animals

Background:

  • Pyloric obstruction in adult dogs necessitates surgical intervention under general anesthesia.
  • Anesthesia management requires careful monitoring of cardiovascular parameters.

Observation:

  • A dog under thiamylal and halothane anesthesia exhibited a discrepancy between electrocardiogram (ECG) QRS-complex rate and peripheral pulse rate.
  • Direct arterial pressure monitoring revealed a pulsatile waveform with alternating amplitude, indicative of pulsus alternans.

Findings:

  • The canine patient presented with clinical signs consistent with pulsus alternans during anesthesia.
  • Pulsus alternans was diagnosed based on simultaneous ECG and arterial pressure monitoring.

Implications:

Related Experiment Videos

  • This case highlights the importance of vigilant cardiovascular monitoring during veterinary anesthesia.
  • Isoflurane appears to be a suitable anesthetic agent for managing patients with or at risk of developing pulsus alternans.
  • Understanding anesthetic effects on cardiac function is crucial for surgical success in veterinary medicine.