How Is Feline HCM Treated?

1 How Is Feline HCM Treated?

1. How to treat feline HCM

First understand the mechanism: how thick the heart wall grows decides the signs — the thicker, the worse. Severe signs are breathing trouble, low appetite, poor blood flow causing rear-leg paralysis, and sudden death. So treatment includes:

1) IV beta-blocker (propranolol) to lower the heart’s contraction.

2) Oral diltiazem to lower the heart-muscle oxygen use — 1–2.5 mg/kg, 2–3 times a day.

3) If pulmonary edema appears, apply nitroglycerin to the shaved chest or belly skin every 6–8 hours. For severe cases, add bumetanide at 0.05–0.2 mg/kg and monitor potassium to avoid depletion and dehydration.

4) If a clot forms, IV heparin, then subcutaneous heparin every 3 hours; once clotting time is 2–3 times longer, shift to every 8 hours.

5) With a thromboembolism complication, after the above, a clot-removal surgery is needed.

Because HCM signs vary, treatment targets each symptom. Generally, first use drugs to slow the heart’s decline; for pulmonary edema use a diuretic; for hyperthyroidism or high blood pressure, give the matching drugs.

Also, a home with a heart-disease cat must keep its heart drug — such as enalapril maleate tablets, a dog-and-cat heart drug (0.5 mg/kg, once daily by mouth or with food). Note it cannot be mixed with potassium-sparing diuretics, and pregnant or nursing cats cannot take it — follow the label or vet.

A gentle reminder: HCM cannot be cured, but early treatment controls it and keeps normal life; left until severe, it often worsens within months. While giving medicine, also cut stress triggers to slow decline.