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  • Author or Editor: Matthew P. Palmisano x
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Objective—To determine the frequency of postoperative vomiting in dogs undergoing routine orthopedic surgery that were treated with hydromorphone and whether that frequency would vary on the basis of administration route.

Design—Noncontrolled clinical trial.

Animals—58 client-owned dogs with cranial cruciate ligament deficiency.

Procedures—Before surgery, all dogs received hydromorphone (0.1 mg/kg [0.045 mg/lb], IM or IV) and 41 dogs also received acepromazine. Anesthesia was induced with diazepam and propofol and maintained with isoflurane in oxygen. Dogs subsequently underwent surgical stabilization of the stifle joint. After surgery, dogs were randomly assigned to receive hydromorphone (0.1 mg/kg) via one of the following routes: IM, IV quickly (for 1 to 2 seconds), or IV slowly (for approx 1 minute). Dogs were monitored for vomiting.

Results—A median of 4 doses of hydromorphone/dog was administered after surgery. One dog was observed to regurgitate once prior to postoperative IM administration of hydromorphone; no dogs vomited at any point during the study period, regardless of the method of hydromorphone administration.

Conclusions and Clinical Relevance—The method of hydromorphone administration had no apparent effect on the likelihood of dogs vomiting. Because no dogs vomited, a particular administration method cannot be recommended. However, findings suggested that hydromorphone can be administered to dogs following orthopedic surgery without a clinically important risk of vomiting or regurgitation.

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in Journal of the American Veterinary Medical Association


Objective—To evaluate use of computed tomography (CT) of the lungs, compared with conventional radiography, for detection of blebs and bullae associated with spontaneous pneumothorax in dogs.

Design—Retrospective case series.

Animals—12 dogs with spontaneous pneumothorax.

Procedure—Medical records were reviewed, and information was collected that included signalment, body weight, initial owner complaint, laboratory findings, radiographic findings, CT findings, medical and surgical treatment, histologic findings, complications, duration of hospitalization, and final outcome.

Results—Radiographs were excellent for identifying pneumothorax (sensitivity, 100%) but poor for identifying the underlying cause (bullae or blebs); these were identified in radiographs of only 2 of 12 dogs. Computed tomography allowed identification of bullae or blebs in 9 of 12 dogs. Ten of the 12 dogs were treated via surgery, and 17 affected lung lobes were identified. Four of the 17 affected lobes were identified via radiography. Thirteen of the 17 affected lobes were identified via CT; however, 1 lobe was incorrectly identified as the right caudal lobe instead of the right cranial lobe.

Conclusions and Clinical Relevance—Results suggested that CT is better than radiography for identifying the underlying causes of spontaneous pneumothorax.

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in Journal of the American Veterinary Medical Association