What is the reversal agent for benzodiazepines?

What is the reversal agent for benzodiazepines?

• A. Naloxone
• B. Flumazenil
• C. Protamine sulfate
• D. Physostigmine

Answer: (B)

Flumazenil reverses benzodiazepine effects by acting as a competitive antagonist at the benzodiazepine binding site on the GABA-A receptor. When given, it displaces benzodiazepines from their receptor, reversing sedation and respiratory depression caused by benzos. In practice, start with a small IV dose (commonly 0.2 mg) and repeat every minute in small increments (0.1–0.2 mg) until the patient regains adequate consciousness and airway protection, with a typical maximum around 1 mg in many protocols. Use caution because abrupt reversal can cause withdrawal, agitation, hypertension, or seizures, especially in patients with chronic benzodiazepine use or co-ingestants that lower seizure threshold (like TCAs). Other agents like naloxone, protamine sulfate, or physostigmine reversal are for different toxicities and do not reverse benzodiazepines.

Flumazenil reverses benzodiazepine effects by acting as a competitive antagonist at the benzodiazepine binding site on the GABA-A receptor. When given, it displaces benzodiazepines from their receptor, reversing sedation and respiratory depression caused by benzos.

In practice, start with a small IV dose (commonly 0.2 mg) and repeat every minute in small increments (0.1–0.2 mg) until the patient regains adequate consciousness and airway protection, with a typical maximum around 1 mg in many protocols. Use caution because abrupt reversal can cause withdrawal, agitation, hypertension, or seizures, especially in patients with chronic benzodiazepine use or co-ingestants that lower seizure threshold (like TCAs). Other agents like naloxone, protamine sulfate, or physostigmine reversal are for different toxicities and do not reverse benzodiazepines.