ํด๋ก๋ผ์ ํ์ดํธ
ํด๋ก๋ผ์ ํ์ดํธ๋ **๋ฒค์กฐ๋์์ ํ๊ณ** ์ฝ๋ฌผ๋ก, ์์ํ์์๋ ์ฃผ๋ก ๋ณด์กฐ ํญ๊ฒฝ๋ จ์ ๋ฐ ๋ถ์์ด๋ ๊ณตํฌ์ ๊ด๋ จ๋ ํ๋ ์ฅ์ ์น๋ฃ์ ์ฌ์ฉ๋ฉ๋๋ค. * **์์ ์์ **: ์ด ์ฝ๋ฌผ์ ์ ๊ตฌ์ฝ๋ฌผ(prodrug)๋ก, ํก์๋๊ธฐ ์ ์ ์์ฐ ํ๊ฒฝ์์ ๋น ๋ฅด๊ฒ ํ์ฑ ๋์ฌ์ฒด์ธ **๋ ธ๋ฅด๋์์ ํ(Nordiazepam)**์ผ๋ก ๋ณํ๋์ด์ผ ํฉ๋๋คใ * ๊ฐ์์๋ ๋์น์ฑ ๋ฐ์์ ์น๋ฃํ๊ธฐ ์ํด ํ๋ ธ๋ฐ๋ฅด๋นํ๊ณผ ํจ๊ป ์์ฃผ ์ฌ์ฉ๋ฉ๋๋ค. ํญ๊ฒฝ๋ จ ํจ๊ณผ์ ๋ํ ๋ด์ฑ์ด ๋ฐ์ํ ์ ์์ผ๋, ํด๋ก๋์ ํ๋ณด๋ค๋ ๋ด์ฑ ๋ฐ์ ์๋๊ฐ ๋๋ฆฐ ๊ฒ์ผ๋ก ๋ณด๊ณ ๋ฉ๋๋ค. * ๊ณ ์์ด์์๋ ํญ๋ถ์์ ๋ก ์ฌ์ฉ๋๊ฑฐ๋ ๋ฐ์ ๊ด๋ฆฌ๋ฅผ ์ํด ํ๋ ธ๋ฐ๋ฅด๋นํ์ ๋์ฒด์ ๋ก ์ฌ์ฉ๋๊ธฐ๋ ํ์ง๋ง, ๊ฒฝ๊ตฌ์ฉ ๋ฒค์กฐ๋์์ ํ์ด ๊ณ ์์ด์์ ํน์ด์ฒด์ง์ฑ ๊ฐ๋ ์ฑ์ ์ ๋ฐํ ์ํ์ด ์์ผ๋ฏ๋ก ์ฃผ์๊ฐ ํ์ํฉ๋๋ค.
์์ฉ ๊ธฐ์ : Benzodiazepines exert their effects by enhancing the inhibitory activity of **gamma-aminobutyric acid (GABA)** in the central nervous system. * **Mechanism**: They bind to specific allosteric sites on the **GABA-A receptor** complex โ increases the frequency of chloride channel opening โ cellular hyperpolarization โ decreased neuronal excitability. * This depression of subcortical CNS levels (primarily limbic, thalamic, and hypothalamic) produces the characteristic anxiolytic, sedative, skeletal muscle relaxant, and anticonvulsant effects. * Other postulated mechanisms include antagonism of serotonin and diminished release or turnover of acetylcholine in the CNS.
๋๋ฌผ ์ข ๋ณ ์ฉ๋
- Anxiolytic or for compulsive behaviors ยท 0.2-0.5 mg/kg PO q12-24h ยท PO ยท q12-24h
- Alternative drug to phenobarbital for seizures ยท 3.75-7.5 mg (total dose per cat) PO once to twice daily ยท PO ยท q12-24h ยท Similar precautions are necessary as described for diazepam use in cats (risk of hepatic necrosis).
- Adjunctive medication in the treatment of seizures (in combination with phenobarbital) ยท 1-2 mg/kg PO q12h, but may need to divide q12h dose and give q8h to minimize adverse effects and maintain therapeutic levels ยท PO ยท q8-12h
- Adjunctive medication in the treatment of seizures (in combination with phenobarbital) ยท 0.5-1 mg/kg PO q8h ยท PO ยท q8h ยท No advantage gained with using sustained release products. May affect phenobarb levels; monitor 2 and 4 weeks later.
- Adjunctive medication in the treatment of seizures ยท 1-2 mg/kg PO q12h ยท PO ยท q12h
- Adjunctive medication in the treatment of seizures ยท 2-4 mg/kg PO twice daily, some dogs may require three times daily ยท PO ยท q8-12h
- Third-line agent for seizures ยท 1-2 mg/kg PO q8-12h ยท PO ยท q8-12h
- Management of cluster seizures ยท 0.5-2 mg/kg two to three times daily ยท PO ยท q8-12h ยท 48-96 hours ยท Give immediately after first seizure and stop after 48-96 hours. Used only during seizure activity, not as maintenance.
- Adjunctive therapy for fears and phobias ยท 11.25-22.5 mg per dog PO once to twice daily ยท PO ยท q12-24h ยท Recommends the sustained-delivery product (Tranxene-SD).
ํฌ์ฌ ๊ฒฝ๋ก
๊ธ๊ธฐ
- Hypersensitivity to benzodiazepines
- Significant liver disease/dysfunction
- Acute narrow angle glaucoma
- Fear-induced aggression (relative contraindication; may disinhibit bite inhibition)
์ด์๋ฐ์
- Sedation (most common)
- Ataxia
- Physical dependence (with chronic use)
- Acute hepatic necrosis (idiosyncratic in cats)
- Paradoxical excitation or disinhibition of aggression
์ฝ๋ฌผ ์ํธ์์ฉ
- Azole Antifungals (itraconazole, ketoconazole) ยท May increase serum levels of benzodiazepines by inhibiting their metabolism.
- Cimetidine ยท May decrease the metabolism of benzodiazepines, leading to prolonged effects.
- CNS Depressants (barbiturates, narcotics, anesthetics) ยท Additive CNS depression; may cause profound sedation or respiratory depression.
- Erythromycin ยท May decrease the metabolism of benzodiazepines.
- Phenobarbital ยท Complex interaction: Clorazepate may initially increase phenobarbital serum levels. Over time, clorazepate levels may decrease, leading to decreased phenobarbital levels. Requires close monitoring.
- Phenytoin ยท May decrease clorazepate concentrations.
- Rifampin ยท May induce hepatic microsomal enzymes and decrease the pharmacologic effects of benzodiazepines.
๋ชจ๋ํฐ๋ง
- Clinical efficacy (seizure frequency or behavioral improvement)
- Adverse effects (sedation, ataxia)
- Liver enzymes (especially critical in cats due to risk of acute hepatic necrosis)
- Phenobarbital serum levels (if used concurrently, monitor at 2 and 4 weeks after adding clorazepate)
๊ณผ์ฉ๋
When used alone, clorazepate overdoses are generally limited to significant **CNS depression** (confusion, coma, decreased reflexes, profound sedation). * **Treatment**: Consists of standard protocols for removing and/or binding the drug in the gut (e.g., emesis if asymptomatic and recent, activated charcoal) and supportive systemic measures. * The use of analeptic agents (CNS stimulants such as caffeine, amphetamines) is generally **not recommended**. * **Flumazenil** (a specific benzodiazepine reversal agent) may be considered for very serious, life-threatening overdoses.
VetSheet ์ฝ๋ฌผ ๋ ํผ๋ฐ์ค๋ ๋ฉดํ ์์ ์ ๋ฌธ๊ฐ๋ฅผ ์ํ ์์ ์์ฌ๊ฒฐ์ ๋ณด์กฐ ๋๊ตฌ์ด๋ฉฐ, ์ ๋ฌธ์ ํ๋จ์ด๋ ์ ์กฐ์ฌ์ ์ต์ ๋ผ๋ฒจ์ ๋์ ํ์ง ์์ต๋๋ค.