Cocaine and Cocaethylene Quiz

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Questions and Answers

Which of the following effects does cocaethylene have compared to cocaine?

  • Increased euphoric effect (correct)
  • Shorter half-life
  • Less toxic
  • Weaker vasoconstrictor

Cocaethylene acts as a strong depressant of the nervous system.

False (B)

What is the primary neurotransmitter whose reuptake cocaine blocks?

Dopamine

Cocaethylene has a half-life of approximately _____ minutes in the body.

<p>150</p> Signup and view all the answers

Match the following effects with their corresponding categories related to cocaine and cocaethylene:

<p>Increased heart rate = Activation of the sympathetic nervous system Euphoria = Pharmacological effects Local anesthetic = Mechanism of action Vasoconstriction = Mechanism of action</p> Signup and view all the answers

What is a common effect of high doses of cocaine?

<p>Agitation and anxiety (A)</p> Signup and view all the answers

Cocaine use can lead to persistent euphoria and increased judgment.

<p>False (B)</p> Signup and view all the answers

What physiological impact can cocaine have on newborns if the mother uses it during pregnancy?

<p>Low birth weight and congenital anomalies</p> Signup and view all the answers

The acute toxic dose of cocaine is approximately _____ mg/kg.

<p>2</p> Signup and view all the answers

Match the following effects with the respective substance:

<p>Cocaine = Rapid crossover to placenta affecting newborns Amphetamines = Impairment of attentiveness and emotional expressivity Both = Potential for addiction and withdrawal symptoms</p> Signup and view all the answers

What is the primary neurotransmitter that psychostimulants augment?

<p>Dopamine (C)</p> Signup and view all the answers

Cocaine is synthesized from the leaves of the coca plant.

<p>True (A)</p> Signup and view all the answers

What is the half-life of cocaine in plasma?

<p>about 50 minutes</p> Signup and view all the answers

Cocaine that is soluble in alcohol, acetone, or ether is known as __________.

<p>crack cocaine</p> Signup and view all the answers

Match the following forms of cocaine with their characteristics:

<p>Crack Cocaine = Insoluble in water but soluble in alcohol Cocaine HCl = Water-soluble and used for local anesthesia Smoked Cocaine = Effects peak at 5 minutes Intravenous Cocaine = Immediate entry into bloodstream</p> Signup and view all the answers

What percentage of a snorted dose of cocaine is absorbed through the nasal mucosa?

<p>20 to 30% (D)</p> Signup and view all the answers

Cocaine is slowly removed from the brain, taking 8 or more hours after initial use.

<p>True (A)</p> Signup and view all the answers

What is the major metabolite of cocaine detected in urine?

<p>benzoylecgonine</p> Signup and view all the answers

What is the half-life of cocaine?

<p>30-90 minutes (B)</p> Signup and view all the answers

Amphetamines act as local anesthetics.

<p>False (B)</p> Signup and view all the answers

What neurotransmitters does amphetamine primarily affect?

<p>Dopamine and norepinephrine</p> Signup and view all the answers

At high doses, amphetamine can prevent dopamine degradation by binding to _____ .

<p>monoamine oxidase (MAO)</p> Signup and view all the answers

Match the pharmacological effects of low to moderate doses of amphetamine with their descriptions:

<p>Increased blood pressure = Stimulates cardiovascular activity Relaxed bronchial muscle = Facilitates easier breathing Increased alertness = Enhances cognitive function Loss of appetite = Reduces the desire to eat</p> Signup and view all the answers

Which of the following is a characteristic of high-dose amphetamine use?

<p>Increased euphoria (B)</p> Signup and view all the answers

Amphetamine metabolites can be detected in urine for up to 72 hours after consumption.

<p>False (B)</p> Signup and view all the answers

What potential impact does amphetamine use have during athletic competitions?

<p>Enhanced performance, but impaired fine motor skills</p> Signup and view all the answers

What is a notable challenge in identifying the effects of drug use during pregnancy?

<p>Separation from other contributing factors (C)</p> Signup and view all the answers

Withdrawal syndrome from opioids is usually more dramatic than from other substances.

<p>False (B)</p> Signup and view all the answers

At what age do children display higher scores for anxiety, depression, and aggression due to exposure to drugs in pregnancy?

<p>3 years old</p> Signup and view all the answers

Symptoms of withdrawal can include increased appetite, weight gain, and a need for increased _____ .

<p>sleep</p> Signup and view all the answers

Match the symptoms with their corresponding effects associated with opioid withdrawal:

<p>Increased appetite = Physical withdrawal symptom Decreased energy = Physical withdrawal symptom Paranoid symptoms = Psychological withdrawal symptom Severe depression = Psychological withdrawal symptom</p> Signup and view all the answers

What is the primary route of administration for the crystalline form of methamphetamine known as 'ice'?

<p>Smoking (D)</p> Signup and view all the answers

Methamphetamine has a relatively short half-life of about 3 hours.

<p>False (B)</p> Signup and view all the answers

What are two health risks associated with high doses of methamphetamine?

<p>Cardiac toxicity and paranoid delusions</p> Signup and view all the answers

The metabolic process of methamphetamine results in about _____ percent being metabolized in the liver.

<p>60</p> Signup and view all the answers

Match the following potential effects of methamphetamine use with their descriptions:

<p>Acute Psychotic Behavior = Severe alterations in perception and reality Cardiac Toxicity = Increased risk of heart-related complications Parkinson's Disease predisposition = Slower motor function and memory deficits Stereotypical Behaviors = Repetitive actions often seen in stimulant use</p> Signup and view all the answers

Flashcards

Psychostimulants

Drugs that increase brain activity by boosting neurotransmitters like dopamine. They also mimic the "fight or flight" response of the sympathetic nervous system.

Cocaine's origin

Cocaine is extracted from the leaves of the coca plant.

Cocaine's medical use

Cocaine is used as a local anesthetic during surgeries.

Crack Cocaine

A smokable form of cocaine that produces a rapid and intense high due to its quick absorption.

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Cocaine Absorption Sites

Cocaine can be absorbed through mucous membranes, the stomach, and lungs.

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Cocaine in the Brain

Cocaine enters the brain rapidly and reaches higher concentrations than in the bloodstream.

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Cocaine Elimination

Cocaine is metabolized by enzymes in the liver and plasma, resulting in a half-life of about 50 minutes.

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Cocaine Detection

Cocaine's main metabolite, benzoylecgonine, can be detected in urine for up to 2 weeks and in hair for 3 to 4 months.

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Cocaethylene

A metabolite formed when cocaine and ethanol interact in the liver, having effects similar to cocaine but with longer duration and increased toxicity.

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How does cocaethylene affect dopamine?

Cocaethylene blocks dopamine reuptake, similar to cocaine, leading to increased dopamine levels in the reward system.

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What are the main effects of cocaethylene?

Cocaethylene acts as a potent local anesthetic, vasoconstrictor, and psychostimulant with addictive potential.

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Cocaethylene's Toxicity

Cocaethylene is more toxic than cocaine due to its potent calcium channel blocking effect, exacerbating cocaine's cardiovascular effects. This can lead to heart attacks and strokes.

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Half-life of Cocaethylene

Cocaethylene has a longer half-life than cocaine, lasting approximately 150 minutes in the body. This contributes to its prolonged effects and increased risk of negative consequences.

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Cocaine's initial effect

Snorting, injecting, or inhaling cocaine initially causes a numbing sensation followed by an intense euphoria, lasting 10-20 minutes, leading to a mild depressive phase.

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Cocaine's rapid tolerance

Cocaine users quickly develop tolerance, requiring increased doses for the same effect. This leads to 'coke runs' or switching methods to maintain the desired effect.

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Higher cocaine doses

Increased cocaine doses escalate effects to agitation, impulsivity, anxiety, suspicion, paranoia, and possibly a toxic/paranoid psychosis.

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Amphetamine impact on brain

Amphetamines can hinder attention and emotional expression, similar to ADHD symptoms. They also reduce gray matter in brain areas responsible for reward, memory, and executive functions.

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Adderall's components

Adderall, a medication for ADHD, contains both dextroamphetamine (d-amphetamine) and levo-amphetamine (l-amphetamine) isomers.

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d-Amphetamine's Abuse

The most abused version of d-amphetamine is a modified version designed to cross the blood-brain barrier faster, achieving quicker and stronger effects.

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Amphetamine vs. Cocaine: Duration

Amphetamines have a longer duration of effect compared to cocaine, meaning their effects last longer.

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Cocaine's Half-Life

The half-life of cocaine is short, around 30-90 minutes, meaning its concentration in the body reduces rapidly.

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Amphetamine's Mechanism of Action

Amphetamine works by altering the levels of dopamine and norepinephrine in the brain. It increases their release, prevents their reuptake, and blocks their breakdown.

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Amphetamine's Effects on Dopamine

At low doses, amphetamine increases dopamine levels in the brain by promoting its release, blocking reuptake, and inhibiting its breakdown.

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Amphetamine's Effects at Low Doses

Low to moderate doses of amphetamine (5-50mg oral) produce moderate effects like increased alertness, mood elevation, and reduced fatigue.

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Amphetamine's Effects at High Doses

High doses of amphetamine (above 100mg intravenous) result in more potent effects, including intense euphoria, increased motor activity, and potentially dangerous side effects.

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Amphetamine's Performance Enhancement

Amphetamine can enhance performance in short-duration, high-intensity activities, but it may impair fine motor skills.

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Pregnancy and Meds: Clear Pattern?

There is no clear pattern of birth defects, growth issues, or low birth weight linked to these drugs. It's hard to separate the drug's impact from other factors.

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Early Childhood Impact

Children exposed to these drugs may show increased anxiety, depression, aggression, and attention problems at age 3.

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Withdrawal Symptoms

These drugs cause withdrawal symptoms, but they're less severe than for other opioids. They include increased appetite, sleepiness, and mood changes.

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Tolerance and Drug Abuse

Tolerance to the pleasurable effects of the drug develops quickly. This leads to a cycle of increasing drug use and withdrawal symptoms.

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Managing Withdrawal

Withdrawal symptoms are managed by careful observation, identifying depression, and using medications for mood and psychotic reactions.

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Methamphetamine's Mechanism

Methamphetamine works by boosting dopamine and norepinephrine levels in the brain, mimicking the effects of cocaine and causing similar euphoria and alertness. However, unlike cocaine, it can be smoked, providing an intense rush.

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Methamphetamine's 'Ice' Form

Methamphetamine can exist in a crystalline form called 'ice', which is similar to crack cocaine's form but is made from the parent compound (methamphetamine itself).

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Methamphetamine's Half-Life

Methamphetamine has a very long half-life (around 12 hours), meaning its effects last for a long time and it takes a while for the body to eliminate it.

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Methamphetamine Neurotoxicity

Methamphetamine's long-term abuse leads to damage in the brain, specifically to dopamine and serotonin nerve terminals, causing neuronal death and cognitive decline. This can predispose users to developing Parkinson's disease.

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Methamphetamine's Effects on High Doses

Chronic high doses of methamphetamine cause severe behavioral problems, including aggression, paranoia, and psychosis. Users may also experience physical symptoms like anorexia, skin sores, and a decline in overall health.

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