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1.
J Am Coll Cardiol ; 16(1): 200-6, 1990 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-2358594

RESUMEN

Currently there is no large animal model of dilated cardiomyopathy. The smaller animal models of cardiomyopathy, such as the Syrian hamster, cannot be studied with echocardiography and cardiac catheterization, and the relevance of these models to human dilated cardiomyopathy is open to question. On the basis of some initial observations in Doberman pinschers, it was speculated that these dogs could have occult left ventricular dysfunction. Accordingly, studies were performed in 46 apparently healthy Doberman pinschers and in 41 mongrel dogs: two-dimensional echocardiography (30 dogs in each group), cardiac catheterization (16 Doberman pinschers and 12 mongrels) and coronary blood flow studies (13 Doberman pinschers and 6 mongrels). In the awake, unsedated dogs studied with echocardiography, left ventricular wall thickening was significantly less in the Dobermans than in the mongrels (28% versus 36%, p = 0.0003). In the anesthetized dogs undergoing cardiac catheterization, left ventricular ejection fraction was significantly lower in the Dobermans than in the mongrels (0.38 versus 0.63, p = 0.0001). Rest coronary blood flow and coronary blood flow reserve were similar in the two groups. It is concluded that apparently healthy Doberman pinschers have occult left ventricular dysfunction. These dogs may serve as a large animal model of dilated cardiomyopathy and should not be used experimentally to study normal cardiac physiology.


Asunto(s)
Cardiomiopatía Dilatada/veterinaria , Modelos Animales de Enfermedad , Enfermedades de los Perros/fisiopatología , Animales , Cateterismo Cardíaco/veterinaria , Cardiomiopatía Dilatada/fisiopatología , Circulación Coronaria/fisiología , Perros , Ecocardiografía/veterinaria
2.
J Am Vet Med Assoc ; 195(9): 1245-8, 1989 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-2584124

RESUMEN

Peritoneopericardial diaphragmatic hernia was diagnosed in 2 dogs and a cat. One dog was referred because of clinical signs of cardiac tamponade and acute decompensation from liver entrapment within the hernia. Surgical correction of the hernia alleviated clinical signs in all 3 animals. Echocardiography was used in combination with radiography to provide a rapid and accurate diagnosis.


Asunto(s)
Enfermedades de los Gatos/diagnóstico , Enfermedades de los Perros/diagnóstico , Ecocardiografía/veterinaria , Hernia Diafragmática/diagnóstico , Animales , Enfermedades de los Gatos/diagnóstico por imagen , Enfermedades de los Gatos/cirugía , Gatos , Enfermedades de los Perros/diagnóstico por imagen , Enfermedades de los Perros/cirugía , Perros , Hernia Diafragmática/diagnóstico por imagen , Hernia Diafragmática/cirugía , Masculino , Radiografía
3.
J Am Vet Med Assoc ; 199(12): 1742-53, 1991 Dec 15.
Artículo en Inglés | MEDLINE | ID: mdl-1813467

RESUMEN

Pacemakers were successfully implanted in 4 adult and geriatric cats with bradycardia and associated signs. Various implantation techniques were used. Complications developed in 3 of the cats, generally more severe in 2 of the 3 cats in which thoracotomy and celiotomy were performed than in the cat in which a transvenous endocardial pacing technique was used. After surgery, pacemaker functions were reprogrammed noninvasively in 2 cats. All 4 cats survived without syncope for a mean of 33.1 months after surgery.


Asunto(s)
Bradicardia/veterinaria , Enfermedades de los Gatos/cirugía , Bloqueo Cardíaco/veterinaria , Marcapaso Artificial/veterinaria , Animales , Arritmia Sinusal/veterinaria , Bradicardia/cirugía , Gatos , Electrocardiografía/veterinaria , Femenino , Bloqueo Cardíaco/cirugía , Masculino , Complicaciones Posoperatorias/veterinaria , Reoperación/veterinaria
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