Comparison of mean heart rate in anaesthetized dachshunds and other breeds of dog undergoing spinal Magnetic Resonance Imaging.

Clinical experience has suggested many times that dachshundsa re prone to bradycardia (slow heart rate) during general anesthesia (GA). This study investigated that hypothesis, observing anaesthetized dachshunds and other dog breeds. Sixty one of the dachshunds studied were found to experience bradycardia when under GA. Data collected while the dogs were under GA included drugs taken, baseline heart rate, respiratory rate, and rectal temperature. They studied the arterial pressure and end-tidal carbon dioxide as well as anaesthetic agent during the first hour of GA. No major differences were found between dachshunds regarding age, baseline heart rate or temperature, hypotension, or fluid infusion rate. It was seen that body mass was smaller for dachshunds compared to other breeds, and the lowest heart rate recorded was contributed by a dachshund. In general, the mean heart rate was lower in dachshunds than other breeds. This study managed to conclude and support the hypothesis that dachshunds havea lower mean heart rated under GA than other breeds. 

 

Harrison, Rebbeca, Clark, Louise, Corletto, Federico. Comparison of mean heart rate in anaesthetized dachshunds and other breeds of dog undergoing spinal Magnetic Resonance Imaging. Veterinary Anaesthesia & Analgesia. 39. 230-235.