Substance Use Disorders and Intoxication

Definition of Substance Use Disorders

  • Substance: A psychoactive compound that can cause health and social problems.

  • Millions of Americans misuse substances monthly.

Categories of Substances

  • Alcohol: Includes beer, wine, spirits.

  • Illicit Drugs:

    • Hallucinogens: e.g., mushrooms, LSD, PCP, ecstasy.

    • Stimulants: e.g., methamphetamine, cocaine, cannabis.

    • Prescription Drugs: Opioids, sedatives, hypnotics used inappropriately.

  • Over-the-Counter Drugs: Commonly cold medications (e.g., dextromethorphan, pseudoephedrine).

  • Other Substances: Inhalants (e.g., spray paint, gasoline).

Drug Scheduling

  • Schedule I: No acceptable medical use, high potential for abuse (e.g., heroin, LSD, cannabis).

  • Schedule V: Lowest potential for abuse, may contain small narcotic amounts (e.g., some cough medications).

Key Definitions

  • Substance Misuse: Use that could harm the user or others; can lead to serious health risks (e.g., overdose, cancer, HIV).

  • Intoxication: Effects on behavior and mental function during or after use.

  • Overdose: Body's reaction to excessive substance ingestion.

Alcohol Use and Intoxication

  • Standard Drink: 14 grams (0.6 ounces) of pure alcohol.

    • Examples:

      • 12-ounce regular beer (5% alcohol).

      • 5 ounces of wine (12% alcohol).

      • 1.5 ounces of spirits (40% alcohol).

  • Prevalence:

    • 50% of Americans (age 12+) consume alcohol.

    • 22% are binge drinkers; 6.4% are heavy users.

  • Heavy Drinking: 8+ drinks/week for females; 15+ drinks/week for males.

  • Binge Drinking: 5+ drinks (men) or 4+ drinks (women) on one occasion.

  • Intoxication Symptoms: Slurred speech, incoordination, unsteadiness, nystagmus, memory impairment.

  • Blood Alcohol Concentration (BAC): Measured in grams per 100 milliliters; BAC of 0.08 = 0.08% alcohol in blood.

  • Overdose Signs: Stupor, vomiting risk, seizures, slow or irregular breathing, slow heart rate, low body temperature, cyanosis risk.

Acute Alcohol Intoxication Management

  • Positioning: Keep them upright or on their side to protect the airway.

  • Assess blood alcohol level and check for other substances.

  • Administer thiamine (Vitamin B1) to prevent Wernicke's encephalopathy.

  • Monitor electrolytes and glucose levels.

Opioid Use and Intoxication

  • Opioids: Medications for pain; e.g., morphine, oxycodone, fentanyl.

  • Intoxication Symptoms: Euphoria, drowsiness, restricted pupils, slurred speech.

  • Overdose Classic Signs: Pinpoint pupils, respiratory depression, decreased consciousness.

  • Reversal Agent: Naloxone (administered intranasally or intramuscularly); short half-life.

Marijuana Use and Intoxication

  • Main Psychoactive Component: Delta-9 THC affecting memory and attention.

  • Effects: Euphoria, relaxation, impaired coordination, dry mouth, increased appetite, possible anxiety or paranoia.

Sedatives, Hypnotics, and Anxiolytics

  • Impact on GABA: CNS depressants that can cause tolerance.

  • Intoxication Symptoms: Slurred speech, impaired judgment, mood swings, potential stupor.

  • Reversal Agent: Flumazenil (caution: can induce seizures in chronic users).

Hallucinogens (e.g. PCP)

  • Effects: Erratic behavior, aggression; can cause nystagmus, hypertension, seizures.

  • Management: May require physical or chemical restraints; halting hazardous behavior.

Stimulants (e.g. cocaine, amphetamines)

  • Effects: Euphoria, increased energy, anxiety, paranoia, hallucinations.

  • Signs of Toxicity: Anxiety, seizures, cardiac issues; withdrawal can induce depression.

Inhalants

  • Common Items: Spray paint, glue, gasoline; causes short-lived euphoria.

  • Symptoms: Belligerence, impaired judgment, dizziness, potential stupor or coma.

Conclusion

  • Overview of substance use and intoxication addressed.

  • Next discussions will focus on withdrawal from substances.

Definition of Substance Use Disorders (DETAILED)

  • Substance: A psychoactive compound that can alter mental states and cause various health and social problems. This includes not only illicit drugs but also legal substances such as alcohol and prescription medications.

  • Millions of Americans misuse substances monthly, highlighting a significant public health concern that requires understanding and intervention.

Categories of Substances

  • Alcohol: Includes beer, wine, spirits; it is often socially acceptable but can lead to severe health issues like liver disease and addiction.

  • Illicit Drugs:

    • Hallucinogens: e.g., mushrooms (psilocybin), LSD (lysergic acid diethylamide), PCP (phencyclidine), ecstasy (MDMA). These substances alter perception and can lead to long-lasting psychological effects.

    • Stimulants: e.g., methamphetamine, cocaine, and cannabis. These can increase alertness and energy but often come with significant mental and physical health risks.

    • Prescription Drugs: Opioids (e.g., oxycodone, hydrocodone), sedatives (e.g., benzodiazepines), and hypnotics that are misused may lead to dependency and serious health consequences.

  • Over-the-Counter Drugs: Commonly cold medications containing dextromethorphan or pseudoephedrine, which can be misused for their psychoactive effects.

  • Other Substances: Inhalants (e.g., spray paint, gasoline) that are often used for their quick euphoric effects, can lead to serious health problems including sudden death from asphyxiation or cardiac arrest.

Drug Scheduling

  • Schedule I: No accepted medical use, with a high potential for abuse (e.g., heroin, LSD, cannabis). These substances are highly regulated.

  • Schedule V: Lowest potential for abuse, which may contain small amounts of narcotics (e.g., some cough medications). Laws regarding these substances are less stringent compared to higher schedules.

Key Definitions

  • Substance Misuse: Use of substances that can harm the user or others; this can lead to serious health risks, such as overdose, cancer, and transmission of infectious diseases (e.g., HIV, hepatitis).

  • Intoxication: Effects on behavior and mental function during or after substance use, affecting decision-making abilities and physical coordination.

  • Overdose: The body's negative reaction to excessive substance ingestion, which can be life-threatening and requires immediate medical attention.

Alcohol Use and Intoxication

  • Standard Drink: 14 grams (0.6 ounces) of pure alcohol; examples include

    • 12-ounce regular beer (5% alcohol),

    • 5 ounces of wine (12% alcohol),

    • 1.5 ounces of spirits (40% alcohol).

  • Prevalence:

    • 50% of Americans aged 12 and older consume alcohol regularly.

    • 22% are binge drinkers (consuming large amounts in a short period), while 6.4% are heavy users, exposing themselves to various health risks.

  • Heavy Drinking: Defined as 8 or more drinks per week for females; 15 or more drinks per week for males, which significantly increases the risk for alcohol dependence and chronic health issues.

  • Binge Drinking: Defined as consuming 5 or more drinks (men) or 4 or more drinks (women) on a single occasion, which raises the chances of injury and accidents.

  • Intoxication Symptoms: May include slurred speech, incoordination, unsteadiness, nystagmus (rapid eye movement), and memory impairment.

  • Blood Alcohol Concentration (BAC): A measurement indicating the amount of alcohol in the bloodstream, with a legal driving limit of 0.08%, indicating severe impairment.

  • Overdose Signs: Stupor, risk of vomiting and choking, seizures, slow or irregular breathing, bradycardia (slow heart rate), low body temperature, and cyanosis (bluish skin). These are critical signs that require emergency intervention.

Acute Alcohol Intoxication Management

  • Positioning: It is crucial to keep the individual upright or on their side to prevent aspiration and maintain an open airway.

  • Assessment: Measure blood alcohol levels and check for the presence of other substances to guide treatment decisions.

  • Thiamine (Vitamin B1) Administration: Administer thiamine to prevent Wernicke's encephalopathy, a serious condition that can arise from alcohol misuse.

  • Monitor: Regularly check electrolyte and glucose levels, as imbalances can occur, necessitating further medical intervention.

Opioid Use and Intoxication

  • Opioids: Common medications prescribed for pain relief; examples include morphine, oxycodone, and fentanyl.

  • Intoxication Symptoms: Euphoria, drowsiness, restricted pupils, confusion, and slurred speech may signify dangerous levels of use.

  • Overdose Classic Signs: Characterized by pinpoint pupils, respiratory depression (slow or shallow breathing), decreased consciousness, and potential death if not treated promptly.

  • Reversal Agent: Naloxone is effective if quickly administered either intranasally or intramuscularly; however, its short half-life may necessitate repeated doses in case of opioid overdose.

Marijuana Use and Intoxication

  • Main Psychoactive Component: Delta-9-tetrahydrocannabinol (THC) significantly impacts memory, coordination, and judgment.

  • Effects: Users may experience euphoria, relaxation, impaired motor skills, dry mouth, increased appetite, and possible feelings of anxiety or paranoia.

Sedatives, Hypnotics, and Anxiolytics

  • Mechanism: These CNS depressants enhance the effect of GABA, a neurotransmitter that inhibits nerve transmission in the brain, which can lead to tolerance and dependence.

  • Intoxication Symptoms: Commonly include slurred speech, impaired judgment, mood swings, and, in severe cases, potential stupor or coma.

  • Reversal Agent: Flumazenil can reverse the effects of these drugs but must be used cautiously as it may induce seizures in chronic users due to withdrawal effects.

Hallucinogens (e.g., PCP)

  • Effects: Utilize hallucinogens, which can cause erratic behavior and aggression, along with physiological effects such as nystagmus, hypertension, and seizures.

  • Management: May require the use of physical or chemical restraints to prevent self-harm or harm to others, especially when the individual is under intense distress.

Stimulants (e.g., cocaine, amphetamines)

  • Effects: Euphoria, increased energy levels, anxiety, paranoia, and hallucinations; stimulant use can lead to severe psychological and physical health risks.

  • Signs of Toxicity: Include anxiety and agitation, seizures, and significant cardiac issues; withdrawal symptoms can lead to severe depression and suicidal thoughts.

Inhalants

  • Common Items: Common household products like spray paint, glue, and gasoline; these are often misused for their euphoric effects but can be short-lived and dangerous.

  • Symptoms: Belligerence, impaired judgment, dizziness, and, in severe cases, stupor or coma due to overdose can occur.

Conclusion

  • An overview of substance use and intoxication has been provided, emphasizing the complexities and dangers associated with misuse. Future discussions will focus on withdrawal from various substances and treatment strategies to address these serious health issues.