μΊ‘ν ν릴
μΊ‘ν ν릴μ μ€ννλ릴기λ₯Ό ν¬ν¨νλ 1μΈλ **μμ§μ€ν μ μ ν ν¨μ(ACE) μ΅μ μ **μ λλ€. μλ λ¨λ―Έ μ΄λ¬΄μ¬μ λ μμ λΆλ¦¬λ ν©νμ΄λμμ μ λλμμΌλ©°, μ΅μ΄μ ACE μ΅μ μ λ‘μ μμ¬μ μλ―Έκ° μμ΅λλ€. μΈνμ± μ¬λΆμ (CHF) λ° κ³ νμ μΉλ£λ₯Ό μν νκ΄ νμ₯μ λ‘ ν¨κ³Όμ μ΄μ§λ§, λ°κ°κΈ°κ° μ§§μ(μ’ μ’ ν루 3ν ν¬μ¬ νμ) κ°μμ μμ₯κ΄ λΆμμ© λ°μλ₯ μ΄ λκΈ° λλ¬Έμ νμ¬ μμνμμλ **μλ λΌν릴**μ΄λ **λ² λμ ν릴**κ³Ό κ°μ μ΅μ μ½λ¬Όλ‘ λλΆλΆ λ체λμμ΅λλ€. **μμ μμ :** μλ λΌν릴과 λ¬λ¦¬ μΊ‘ν ν릴μ κ·Έ μμ²΄λ‘ νμ± μ½λ¬Όμ΄λ©°, ν¨κ³Όλ₯Ό λνλ΄κΈ° μν΄ κ°μμ νμ± λμ¬μ°λ¬Όλ‘ μ체 λ³νλ νμκ° μμ΅λλ€.
μμ© κΈ°μ : Captopril acts as a competitive inhibitor of **angiotensin-converting enzyme (ACE)**, for which it has a much higher affinity than the natural substrate, angiotensin-I. * **Angiotensin I** β (blocked by ACE) β **Angiotensin II** (a potent vasoconstrictor). * The reduction in Angiotensin II leads to **vasodilation**, decreasing total peripheral resistance, pulmonary vascular resistance, and blood pressure. * Decreased Angiotensin II also reduces **aldosterone** secretion, leading to decreased sodium and water retention, while increasing plasma renin activity. * Cardiovascular benefits in CHF include increased cardiac output, stroke volume, and exercise tolerance with little to no change in heart rate.
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- CHF / Hypertension Β· 1/4 to 1/2 of a 12.5 mg tablet PO q8-12h Β· PO Β· q8-12h
- Dilative, restrictive or hypertrophic cardiomyopathy Β· 0.55-1.54 mg/kg PO q8-12h Β· PO Β· q8-12h
- CHF / Hypertension Β· 0.5-2 mg/kg PO three times daily Β· PO Β· TID
- CHF / Hypertension Β· 0.5-2 mg/kg PO q8-12h Β· PO Β· q8-12h
μ©λμ λ©΄ν μμ μ λ¬Έκ°λ₯Ό μν μμ μ°Έκ³ μλ£μ λλ€. νμ μ΅μ λΌλ²¨κ³Ό κ°λ³ νμμ λν΄ νμΈνμμμ€.
ν¬μ¬ κ²½λ‘
κΈκΈ°
- Hypersensitivity to ACE inhibitors
μ΄μλ°μ
- Hypotension
- Renal failure
- Hyperkalemia
- Vomiting
- Diarrhea
- Skin rashes (reported in humans, not dogs)
- Neutropenia/agranulocytosis (rare, reported in humans)
μ½λ¬Ό μνΈμμ©
- Antacids Β· Reduced oral absorption of captopril; separate dosing by at least two hours.
- Cimetidine Β· Concomitant use has caused neurologic dysfunction in human patients.
- Digoxin Β· Digoxin levels may increase 15-30%; monitor serum digoxin levels.
- Diuretics Β· Concomitant use may cause hypotension; titrate dosages carefully.
- NSAIDs Β· May reduce the clinical efficacy of captopril when used as an antihypertensive agent.
- Potassium or Potassium-Sparing Diuretics (e.g., spironolactone) Β· Increased risk of developing hyperkalemia.
- Probenecid Β· Can decrease renal excretion of captopril, possibly enhancing clinical and toxic effects.
- Vasodilators (e.g., prazosin, hydralazine, nitrates) Β· Concomitant use may cause additive hypotension; titrate dosages carefully.
λͺ¨λν°λ§
- Clinical signs of CHF (respiratory rate/effort, exercise tolerance)
- Blood pressure (especially if treating hypertension or if signs of hypotension arise)
- Serum electrolytes (monitor for hyperkalemia)
- Renal panel (Creatinine, BUN)
- Urine protein
- CBC with differential (periodic)
κ³Όμ©λ
The primary concern in an overdose situation is **hypotension**. * **Treatment:** Supportive treatment with volume expansion using normal saline is recommended to correct blood pressure. * **Toxicity thresholds:** Dogs given 1.5 g/kg orally developed emesis and decreased blood pressure. Dogs receiving doses greater than 6.6 mg/kg q8h may develop renal failure.
VetSheet μ½λ¬Ό λ νΌλ°μ€λ λ©΄ν μμ μ λ¬Έκ°λ₯Ό μν μμ μμ¬κ²°μ 보쑰 λꡬμ΄λ©°, μ λ¬Έμ νλ¨μ΄λ μ μ‘°μ¬μ μ΅μ λΌλ²¨μ λμ νμ§ μμ΅λλ€.