Addictions Flashcards
What is intoxication?
Transient syndrome of psychological or physical impairment after substance ingestion which disappears when substance is eliminated from the system
What is withdrawal state?
Group of symptoms when a drug is reduced in amount or stopped entirely
What is tolerance?
Biological neuroadaptations after repeated administration lead to drug producing decreased effect. Higher dose rq for the same effect
What is harmful use
Pattern of psychoactive substance use causing damage to health (physical/mental)
ICD 10/11 Dependence syndrome
11 - 3 pairs of criteria (CNN) impaired Control + compulsion, Neglect of other aspects of life, Neuroadaptation to the substance (incl. tolerance + withdrawal) continuous over 3mths/1 year
1 required for diagnosis
10 - 3/more in the past year
Control, impaired control, withdrawal, tolerance, neglect of alternative pleasures, persistent use despite effects
ICD 10/11 Harmful use
11 includes harm to the health of others e.g. society, partner etc
What are the main differences with DSM-5 to the other criteria?
Separates opioid use disorder and alcohol use disorder
Spectrum of diagnosis from mild, moderate, severe
used in america
Main features of all diagnostic criteria
Loss of control
Functional impairment
neuroadaptation
What are the 6 elements that should be taken in a history for substance misuse?
Presenting Complaint,
History of Presenting Complaint,
Substance Misuse History (length, pattern, amount, mode of admin, triggers),
Family History,
Psychiatric History (trauma, developmental disorders ADHD, comorbidities)
Personal History (relationships, stress)
What are the main causes of morbidity and mortality in substance misuse?
Trauma, Suicide, Overdose, road accidents///
Other medical conditions - cirrhosis from alcohol, infective endocarditis from IV, blood-borne viruses HIV, Hep B
Excretion rate of alcohol
1 unit per hour
What is the recommended limit for alcohol consumption for men and women?
14 units a week
How would you calculate units in an alcoholic drink?
Percentage Strength x Volume [ml] / 1000
How many units are in: a glass of wine, a bottle of wine, a pint of beer and a 25ml spirit glass?
Glass of Wine - 2 units // Pint of Beer - 2 units // Bottle of Wine - 10 units // Spirit Glass - 1 unit
What is speech like in excessive alcohol users?
Normal rate, rhythm, volume
What is mood and affect like in excessive alcohol users?
Euthymic but irritable
What is perception like in excessive alcohol use?
No hallucinations reported (unless severe withdrawal)
Alcohol absorption
Max blood conc within 1hr of ingestion
slowed by food and increased by fizzy drinks
hydrophilic .: widely distributed in body tissues
What is the pharmacodynamics of alcohol like?
Effect on the body:
Agonist of GABA-A (inhibitory -> anxiolysis)
Agonist of dopamine in mesolimbic system (reward)
Antagonist of NMDA glutamate receptors (causing amnesia)
How is alcohol metabolised and at what rate?
Ethanol oxidised eventually to carbon dioxide and water at a linear rate of 1 unit (8g of pure alcohol) per hour
ethanol - acetaldehyde - co2 + h20 via dehydrogenase enzymes
moonshine may contain methanol which forms formaldehyde, causing retinal toxicity.