Is your patient on barbiturates?
This Post is adapted from the Canadian Pharmacists Association (CPhA) Drug Monograph: Barbiturates
Product Summary Information
- Barbiturates are nonselective central nervous system (CNS) depressants, capable of producing all degrees of depression from mild sedation and hypnosis to general anesthesia, deep coma and death.
- The extent of CNS depression varies with the route of administration, dose and pharmacokinetic characteristics of the particular barbiturate. Patient-specific factors such as age, physical or emotional state and the concomitant use of other drugs will also affect response.
- Barbiturates have been used parenterally in the management of status epilepticus or acute seizure episodes that are secondary to meningitis or other causes.
- Butalbital is used in combination with analgesics in the management of mild to moderate headache.
- Phenobarbital and primidone are used as second-line or adjunctive agents in the management of simple or complex partial seizures with or without secondary generalization.
- Phenobarbital is sometimes used in the management of acute alcohol withdrawal; it has also been used in combination with ergotamine and belladonna in the treatment of migraine.
- Pentobarbital is used as a sedative prior to surgery or other procedures.
- Pentobarbital is used in certain cases of increased intracranial pressure.
- Corticosteroids: Barbiturates may increase the metabolism of corticosteroids. There have been several reports of exacerbation of asthma and other conditions when barbiturates were added to regimens containing corticosteroids.
- Doxycycline: Barbiturates have been reported to increase the metabolism and correspondingly reduce the effectiveness of doxycycline.
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