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Comprehensive Guide to Senior Dog Heart Failure & MMVD: Sleeping Respiratory Rate (SRR), ACVIM Staging, Pimobendan, and Emergency Care
An essential veterinary cardiology guide for senior dogs suffering from mitral valve disease (MMVD): pathophysiology, ACVIM A-D staging, the EPIC trial and early Pimobendan benefits, sleeping respiratory rate (SRR < 30 bpm) monitoring, low-sodium cardiac diets, and pulmonary edema emergency protocols.
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📅 2026-08-20⏱️ 21 min read
# Comprehensive Guide to Senior Dog Heart Failure & MMVDStage B2 Window: Identified by murmur intensity and cardiomegaly (VHS/VLAS). The landmark EPIC trial proved that early administration of Pimobendan (inodilator) extends the asymptomatic period by an average of 15 months (426 days) before congestive heart failure onset.
Stage C & D: Advanced congestive heart failure characterized by pulmonary edema, requiring triple therapy (Pimobendan + loop diuretics + ACE inhibitors). The gold standard for home monitoring: measure chest excursions for 60 seconds while the dog is in deep sleep.
Normal: < 25 breaths/min.
Emergency Threshold: Consistent counts > 30 breaths/min indicate impending cardiogenic pulmonary edema, requiring immediate veterinary triage. Strict dietary sodium restriction to minimize volume overload.
Myocardial bioenergetic support with Taurine, L-Carnitine, Coenzyme Q10, and high-dose Omega-3 fatty acids (EPA/DHA) to combat cardiac cachexia and arrhythmogenesis.
Chronic mitral valve disease (MMVD) is the most common cardiovascular disorder in aging canines, affecting over 70% of small-breed senior dogs. Understanding the pathophysiology of left apical murmurs, progressive left atrial enlargement, and bronchial compression is vital for early intervention.
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▶ 1. ACVIM Staging & The EPIC Trial
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▶ 2. Sleeping Respiratory Rate (SRR) Monitoring
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▶ 3. Nutritional Management
태그:#노령견심장병#이첨판폐쇄부전증#MMVD#강아지심부전#수면중호흡수#피모벤단#노령견케어#폐수종예방#수의심장학
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