In order to discuss the usefulness of pressure-volume (PV) loops to foresee and prevent accidents during anesthesia, and to make better use of PV loops for respiration control, we recorded PV loops in 78 outpatient dogs without serious respiratory disease and one healthy dog under anesthesia, and compared the shapes of the PV loops. We found specific changes in PV loops caused by fighting, air leaks, kinks in the endotracheal tube, compression of the chest or abdomen, a prone position, and conditions of ventilation. There was a strong correlation between dynamic compliance and body weight, but no correlation between specific compliance and age, although there was a tendency toward correlation between specific compliance and body condition score.
During the ten years from 1997 through 2006, cases of mamushi bites in 48 dogs and 4 cats were surveyed retrospectively regarding the season of occurrence, time of day, place, breed of dog, the number and sites of bites, clinical signs, results of blood tests and bacterial cultures, treatment, frequency of consultation, and final dermal condition at the last visit. Mamushi bites mostly occurred while walking at night from August to October. Mild swelling was found in almost all dogs, but there was one severe case in a toy-breed dog. In cats, there were fewer victims, and the clinical signs were all mild. In 12 of 17 dogs, especially in toy-breed dogs (5 of 6), blood tests were abnormal. In the most severe cases, hemolysis, anemia, hypoalbminemia, electrolyte imbalance, abnormality of serum biochemistry and coagulation profile, and increase in white blood cells were found. Antimicrobial-resistant bactaria were also found in this case. As small dogs tend to become severe, careful monitoring is needed especially when toy-breed dogs show abnormality of systemic clinical signs and/or blood tests.
From April of 1998 to December of 2006, 262 cats with oral disease were treated in our hospital. Ninety-one of them suffered from chronic stomatitis without dental calculus or plaque. Among them, 75 cats were negative for both feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV), but from the lesions, feline calicivirus (FCV) was detected in 18 cats, accounting for 24 % of the FeLV negative, FIV negative, and calculus/plaque-free cats. Therefore the presence of FCV-induced chronic stomatitis was indicated.