Cardiovascular

Mitral valve disease

Routine

Also known as: mitral valve; heart murmurs; heart murmur

Overview

degenerative valve disease; most common in senior small breeds (Cavalier King Charles, Dachshund, Chihuahua). Signs: soft cough, exercise intolerance, murmur. Cardiology screening.

Non-prescriptive. This entry deliberately does NOT name specific drugs, doses, routes, or durations. Treatment decisions rest with a licensed veterinarian who has examined your dog and considered its history.
Draft — vet review pending. This entry has not yet been signed off by a registered veterinarian.

Predisposed breeds

Affenpinscher — a Toy (AKC) breed

Affenpinscher

Germany
Bull Terrier — a Terrier (AKC) breed

Bull Terrier

England, 19th century

Cavachon (Cavalier × Bichon Frise)

United States, 1990s
Cavalier King Charles Spaniel — a Toy (AKC) breed

Cavalier King Charles Spaniel

England
Cavapoo — a Designer cross (Cavalier King Charles Spaniel x Poodle) breed

Cavapoo

Australia/United States; popular companion cross
Chihuahua — a Toy (AKC) breed

Chihuahua

Mexico
Cocker Spaniel (English) — a Sporting (AKC); Gun Dog (KC) breed

Cocker Spaniel (English)

United Kingdom, 19th century
Japanese Chin — a Toy (AKC) breed

Japanese Chin

Japan / China
King Charles Spaniel (English Toy Spaniel) — a Toy / Companion; FCI Group 9 breed

King Charles Spaniel (English Toy Spaniel)

England; older, shorter-muzzled cousin of the Cava
Norfolk Terrier — a Terrier (AKC) breed

Norfolk Terrier

England
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