Myxomatous mitral valve disease in a Shih Tzu dog

Khor K. H., . and Teoh Y. B., . Myxomatous mitral valve disease in a Shih Tzu dog. pp. 18-22. ISSN 0128-2506

An 11-year-old intact male Shih Tzu dog was referred to the University Veterinary Hospital (UVH) with history of coughing and laboured breathing. Auscultation revealed that the dog had a left systolic heart murmur grade V/VI at the base of the heart. Radiography showed findings of cardiomegaly and pulmonary oedema. Echocardiography findings revealed that dog has a myxomatous mitral valve disease. The mitral valve was severely thickened and prolapsed into the left atrium. Congestive heart failure (CHF) was treated with an angiotensin converting enzyme(ACE) inhibitor and diuretic. An anti-mucolytic agent was prescribed as a symptomatic treatmentfor the coughing that could be due to mild bronchitis. Dog did not response well with treatment as the frequency of cough was not reduced and the duration was longer each time. Pimobendan was then added on to the initial treatment and there was a tremendous improvement seen from the patient after that. Episodes of productive cough were noticed greatly reduced and dog was much more active at home post two weeks of ACE inhibitor diuretic and dual-acting inodilator. We successfully maintained the dog with minimal coughing episodes. However the prognosis is moderate to poor in this case due to possibilities of refraction towards medications.

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Abstract

An 11-year-old intact male Shih Tzu dog was referred to the University Veterinary Hospital (UVH) with history of coughing and laboured breathing. Auscultation revealed that the dog had a left systolic heart murmur grade V/VI at the base of the heart. Radiography showed findings of cardiomegaly and pulmonary oedema. Echocardiography findings revealed that dog has a myxomatous mitral valve disease. The mitral valve was severely thickened and prolapsed into the left atrium. Congestive heart failure (CHF) was treated with an angiotensin converting enzyme(ACE) inhibitor and diuretic. An anti-mucolytic agent was prescribed as a symptomatic treatmentfor the coughing that could be due to mild bronchitis. Dog did not response well with treatment as the frequency of cough was not reduced and the duration was longer each time. Pimobendan was then added on to the initial treatment and there was a tremendous improvement seen from the patient after that. Episodes of productive cough were noticed greatly reduced and dog was much more active at home post two weeks of ACE inhibitor diuretic and dual-acting inodilator. We successfully maintained the dog with minimal coughing episodes. However the prognosis is moderate to poor in this case due to possibilities of refraction towards medications.

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Item Type:	Article
AGROVOC Term:	Heart diseases
AGROVOC Term:	Dogs
AGROVOC Term:	Heart
AGROVOC Term:	Lungs
AGROVOC Term:	Breathing
AGROVOC Term:	Cough
AGROVOC Term:	Echocardiography
AGROVOC Term:	Radiography
AGROVOC Term:	Pulmonary diseases
AGROVOC Term:	Angiotensin
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8349

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