Anxiolytics Flashcards
Dependence of benzodiazepines
- The drug induces a rewarding experience • Drug taking becomes compulsive
- Psychological dependence
- Physical dependence
- Genetic factors
Tolerance
is a physiological reaction (neuroadaption) characterized by a decrease in the effects of a drug with chronic administration.
Withdrawal
- A result of physical dependence
- Increased anxiety, onset / exacerbation of depression
- Disturbed sleep
- Pain, stiffness , muscular aches
- Convulsions
- Can occur after relatively short courses of treatment (4 weeks)
Abuse (DSM V Substance Use Disorder)
- Usually part of polydrug misuse
- Enhances “highs”
- Attenuates “crashes”
- In part iatrogenically driven
Management of acute alcohol withdrawal
- Acute admissions to hospital
- Supply of alcohol interrupted
- Index of suspicion
- Alcohol history
- Severity of alcohol dependence questionnaire
- Assessment of withdrawal symptoms Chlordiazepoxide 1-2 week reducing regime
CAGE questionnaire
• Have you ever felt you should Cut down your drinking?
• Have you ever been Annoyed by other people criticizing your
drinking?
• Have you ever felt Guilty about drinking?
• Have you ever taken a drink in the morning to steady your nerves or ease a hangover (Eye-opener)?
Symptoms of alcohol withdrawal
May start 8 hours after drop in alcohol levels (peak day 2) Insomnia / anxiety/ restlessness/ agitation Tremor
Nausea & vomiting
Sweating
Palpitations
Hallucinations auditory / visual/tactile Seizures
Investigations suggestive of chronic alcohol consumption
- Raised MCV
- Pancytopenia (result of alcohol induced bone marrow suppression
- Folate deficiency
- Prolonged prothrombin time
Management of insomnia
- Difficulty getting off to sleep or waking up?
- Assessment? Pain/ breathlessness
- Good sleep hygiene
- Hypnotics reserved for the acutely distressed
- Caution in the elderly • Confusion
- Falls
- Slower metabolism
What is sleep hygiene?
Sleep hygiene aims to make people more aware of behavioural, environmental & temporal factors that may be detrimental or beneficial to sleep
Good Sleep hygiene
• Establish a regular pattern of going to bed & getting up
• Get regular exercise preferably in the morning but not within 4 hours of going to bed
• Keep your bedroom cool, dark & quiet
• Don’t have caffeine, alcohol or smoke within 6 hours
of bedtime
• Avoid screen time for at least 30mins before bed
• Avoid naps during the day
Insomnia drug treatment
- Short acting benzo or z-drug
- Lowest effective dose for shortest time
- Inform patient no repeat prescriptions & explain why
Anticipatory care plan
- Benzodiazepines often used in the last days or weeks of life • Management of anxiety
- Massive terminal haemorrhage
- Agitated delirium
- Breathlessness or respiratory distress (alongside opioid) • Midazolam is usually drug of choice
Management of prolonged seizures (yes
- Protect the patient from injury
- Provide oxygen if available
- Consider / exclude hypoglycaemia
- Seizures lasting longer than 5 minutes intravenous lorazepam
- Intravenous access not available consider rectal diazepam or intranasal / buccal midazolam
Law on driving (March 2015)
- This law states that it is an offence to drive with certain drugs above specified levels in the body, whether your driving is impaired or not
- If you are taking these medicines as directed and your driving is not impaired, then you are not breaking the law
- Benzos, opioids, amphetamines