Anxiolytics Flashcards
Anxiolytics Mean :
Drugs used to reduce anxiety and calm the patient
Sedatives mean :
Drugs used to reduce activity and the calm patient without inducing sleep
Hypnotics mean :
Are drugs used to induce sleep resembling normal sleep. They are used for insomnia
Drugs used to treat anxiety
Benzodiazepines
Buspirone
Antidepressants
Others
What’s the mechanism of action of benzodiazepines :
They work by binding to GABAa receptor and stimulating it, therefore increasing its inhibitory effect by facilitating chloride inward current. (Hyperpolarization)
Effects of benzodiazepines ?
- Reduces anxiety
- Reduces aggression
- Sedation
- Muscles relaxation
- Anterograde amnesias.
- Respiratory depression when used with CNS depressant (Alcohol)
Best choice of benzodiazepines for anxiety :
Alprazolam
Best choice of benzodiazepines for muscle spasm & seizures ?
Diazepam
Best choice of benzodiazepines for anesthesia ?
Midazolam
What is the route of administration for benzodiazepines
Orally
What’s the nature of benzodiazepines ?
Highly lipophilic
Where do the benzodiazepines metabolize ?
How are they excerted ?
Liver
Excerted renally
Adverse effects of benzodiazepines ?
- Morning sedation
- Confusion
- Poor motor coordination
- Anterograde amnesia
- Paradox excitation
Benzodiazepines interactions ?
- CNS depressants
- CYP450 inducers > decrease BDZs level
- CYP450 inhibitors > increase BDZs level
What’s the use flumazenil ?
Treat benzodiazepines and Z-drugs overdose
Competitive BDZ receptor antagonist
What is the mechanism of action of Buspirone ?
Partial agonist at the serotonin 1A receptor (5-HT1A)
Like Mirtazapine
What’s the onset of action for Buspirone ?
1-2 weeks
What’s the use of Buspirone ?
Chronic anxiety states
What’s the use of thiopental ?
Ultras short anesthesia
What’s the use of Phenobarbital ?
Used in some cases of seizures
What is the main class of drugs for anxiety ?
Antidepressants, especially when it’s paired with depression
Which class of anxiolytics is usually limited to acute relief of severe anxiety?
Benzodiazepines
Which class of drugs is the 1st line medication for GAD ?
SSRIs or SNRIs
Which class of drugs is the 1st line medication for OCD ?
SSRIs