플루마제닐

벤조디아제핀 길항제

플루마제닐은 매우 특이적인 **벤조디아제핀 길항제**로, 수의학에서는 주로 치료적 사용이나 우발적 과다 복용으로 인한 벤조디아제핀(예: 디아제팜, 미다졸람, 졸라제팜)의 중추신경계(CNS) 억제 효과를 역전시키는 데 사용됩니다. **주요 임상 적용:** * **진정/마취 역전:** 벤조디아제핀으로 인한 진정 상태를 빠르게 회복시킵니다. * **간성 뇌증:** 내인성 벤조디아제핀 유사 물질을 길항하여 중증 간부전 환자의 신경 기능을 일시적으로 개선하기 위한 보조 요법으로 사용될 수 있습니다. * **독성/과다 복용:** 벤조디아제핀 및 졸피뎀(Ambien®)과 같은 특정 비벤조디아제핀계 수면제의 과다 복용 치료에 효과적입니다. > **임상 팁:** 틸레타민-졸라제팜(Telazol®) 마취 조합을 역전시키는 데 사용할 경우, 플루마제닐은 졸라제팜 성분(진통, 자세, 청각 효과)은 성공적으로 역전시키지만 틸레타민(해리성 마취제)은 역전시키지 **않습니다**. 이는 벤조디아제핀의 안정화 효과 없이 잔여 해리 효과(예: 근육 경직, 불쾌감)로 인해 거친 회복 과정을 유발할 수 있습니다.

작용 기전: Flumazenil acts as a competitive antagonist at the **benzodiazepine recognition site** on the **GABA-A/benzodiazepine receptor complex** in the central nervous system. **Mechanism Pathway:** Flumazenil binds to the receptor → competitively displaces benzodiazepine molecules → prevents the allosteric enhancement of **GABA** → prevents the opening of **chloride (Cl-) channels** → reverses GABAergic inhibitory effects (sedation, amnesia, muscle relaxation).

동물 종별 용량

Cats

As an antagonist for benzodiazepines · 0.01 mg/kg IV; may need to be repeated as half-life is only about an hour. May also be administered intratracheally in an emergency. · IV, Intratracheal · PRN · May need to be repeated due to short half-life.
Reversal of benzodiazepine sedation and respiratory depression · 0.01-0.1 mg/kg · IV · prn (can be repeated if marked respiratory depression reoccurs) · As needed · Start at the low end of the dose range. It takes 6-10 minutes for flumazenil to reach peak effects after IV administration.

Dogs

As an antagonist for benzodiazepines · 0.01 mg/kg IV · IV · once
As an antagonist for benzodiazepines · 0.01 mg/kg IV; may need to be repeated as half-life is only about an hour. May also be administered intratracheally in an emergency. · IV, Intratracheal · PRN · May need to be repeated due to short half-life.
For adjunctive therapy to improve neurologic function in dogs with severe hepatic encephalopathy · 0.02 mg/kg IV (one time) · IV · once
For adjunctive therapy to improve neurologic function in dogs with severe hepatic encephalopathy · 0.02 mg/kg IV; if animal responds, safe to use repeatedly · IV · PRN
Reversal of benzodiazepine sedation and respiratory depression · 0.01-0.1 mg/kg · IV · prn (can be repeated if marked respiratory depression reoccurs) · As needed · Start at the low end of the dose range. It takes 6-10 minutes for flumazenil to reach peak effects after IV administration.

용량은 면허 수의 전문가를 위한 임상 참고 자료입니다. 항상 최신 라벨과 개별 환자에 대해 확인하십시오.

투여 경로

IVIntratracheal

금기

Known hypersensitivity to flumazenil or other benzodiazepines
Patients receiving benzodiazepines for life-threatening conditions (e.g., status epilepticus, increased intracranial/CSF pressure)
Serious tricyclic antidepressant (TCA) overdose
Mixed overdoses where benzodiazepine reversal may precipitate seizures
Baclofen or carisoprodol overdoses (may worsen clinical signs)
Suspected tricyclic antidepressant overdose (can precipitate seizures)
Patients receiving long-term benzodiazepine administration for seizure control or sedation (relative contraindication)

이상반응

Injection site reactions
Vomiting
Cutaneous vasodilatation
Vertigo
Ataxia
Blurred vision
Seizures (especially in patients with a history of chronic benzodiazepine use or tricyclic antidepressant toxicity)
Potentially teratogenic at high dosages
Seizures (especially in patients receiving long-term benzodiazepine therapy)
Re-sedation (due to short half-life)
Agitation or anxiety upon rapid awakening

약물 상호작용

Cyclic Antidepressants (e.g., clomipramine, amitriptyline) · Increased risk for seizures; concurrent use is contraindicated.
Neuromuscular Blocking Agents · Not recommended to use flumazenil until neuromuscular blockade has been fully reversed.
Tricyclic antidepressants (TCAs) · Can precipitate seizures in patients with suspected TCA overdose · major
Benzodiazepines (Diazepam, Midazolam, etc.) · Antagonizes therapeutic effects (intended interaction) · major
Tricyclic antidepressants · Increased risk of seizures if flumazenil is administered during a TCA overdose. · major

모니터링

Efficacy of reversal (level of consciousness, respiratory rate)
Monitor for re-sedation after 1-2 hours due to short half-life
Monitor for seizures in susceptible patients
Respiratory rate and depth
Level of consciousness and sedation (monitor for re-sedation after 1 hour)
Seizure activity

과용량

Large IV overdoses have rarely caused symptoms in otherwise healthy humans. If seizures are precipitated by an overdose or rapid reversal, they have been successfully treated with barbiturates, benzodiazepines, and phenytoin, usually with prompt responses.

VetSheet 약물 레퍼런스는 면허 수의 전문가를 위한 임상 의사결정 보조 도구이며, 전문적 판단이나 제조사의 최신 라벨을 대신하지 않습니다.