Please check your internet connection and try again.
# Lorazepam
## Overview
Lorazepam is a benzodiazepine medication commonly used for its anxiolytic, sedative, and anticonvulsant properties.
## Primary Indications
* Anxiety disorders
* Insomnia (short-term treatment)
* Seizures (status epilepticus, acute treatment)
* Premedication for surgical procedures
* Management of alcohol withdrawal symptoms
## Adult Dosing
* **Anxiety:** 0.5 mg to 2 mg orally every 6 to 8 hours as needed. Doses may be increased cautiously based on response.
* **Insomnia:** 2 mg to 4 mg orally at bedtime.
* **Status Epilepticus:** 4 mg intravenously or intramuscularly. A repeat dose of 4 mg may be administered after 10 to 15 minutes if seizures persist. Maximum initial dose is 8 mg.
* **Premedication:** 2 mg to 4 mg orally or intramuscularly 2 hours before surgery.
* **Alcohol Withdrawal:** 1 mg to 4 mg orally or intramuscularly every 4 to 6 hours as needed.
Specific dosing for indications like procedural sedation or ICU sedation will vary based on patient factors and institutional protocols.
## Pediatric Dosing
Dosing in pediatric patients is highly variable and requires careful consideration of age, weight, and clinical condition. There is limited established pediatric dosing; use with caution.
* **Status Epilepticus:** Intravenous dose of 0.1 mg/kg, not to exceed 4 mg per dose. A repeat dose may be given after 10 to 15 minutes.
* **Anxiety/Sedation:** Dosing is not well-established and should be individualized.
## Dose Adjustments
* **Hepatic Impairment:** Use with caution. Dose reduction may be necessary.
* **Renal Impairment:** No specific dose adjustment is routinely recommended, but caution is advised.
## Contraindications
* Known hypersensitivity to lorazepam or other benzodiazepines.
* Acute narrow-angle glaucoma.
* Severe respiratory insufficiency.
* Severe hepatic insufficiency.
## Adverse Effects
Common adverse effects include drowsiness, dizziness, fatigue, ataxia, weakness, and confusion. Less common but serious adverse effects include respiratory depression, paradoxical excitation, anterograde amnesia, and dependence.
## Key Drug Interactions
* **CNS Depressants (e.g., opioids, alcohol, other sedatives):** Increased risk of profound sedation, respiratory depression, coma, and death.
* **Theophylline and Aminophylline:** May decrease the sedative effects of lorazepam.
* **Valproic Acid:** May increase plasma concentrations of lorazepam.
## Monitoring
* Level of consciousness, respiratory rate, and oxygen saturation, especially with IV administration or in combination with other CNS depressants.
* Signs of withdrawal if discontinued abruptly after prolonged use.
* Liver function tests and renal function tests if indicated.
## Clinical Pearls
* Lorazepam has a longer half-life than some other benzodiazepines, but its active metabolite is inactive.
* Intravenous administration can cause hypotension and respiratory depression.
* Avoid abrupt discontinuation, especially after chronic use, to prevent withdrawal symptoms. Tapering is recommended.
* Use in elderly patients may increase the risk of falls and cognitive impairment; start with lower doses.
***
*Disclaimer: This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always consult the most current prescribing information and relevant clinical guidelines before making any treatment decisions.*
