Final - opioids Flashcards

1
Q

What plant is opium derived from?

A

Opium poppy.

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2
Q

When is opium available for harvest?

A

Only a few days during the plant’s life.

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3
Q

How is raw opium collected?

A

By scraping the resin that oozes from shallow cuts in unripe seedpods.

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4
Q

What is extracted from raw opium?

A

Morphine.

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5
Q

What is derived from morphine?

A

Heroin.

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6
Q

How long has opium been used medically?

A

Approximately 6,000 years.

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7
Q

What were early uses of opium?

A

To relieve pain, reduce diarrhea, and relieve anxiety.

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8
Q

When was opioid addiction first documented?

A

Around 1,000 BCE.

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9
Q

Who developed laudanum?

A

Thomas Sydenham.

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10
Q

What year did opium smoking become outlawed in China?

A

1729

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11
Q

What triggered the Opium Wars?

A

British involvement in illicit opium trade in China.

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12
Q

What was Britain granted after winning the Opium Wars?

A

The island of Hong Kong and trading rights.

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13
Q

When was morphine isolated?

A

1806

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14
Q

How much stronger is morphine compared to opium?

A

10 times.

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15
Q

When was codeine isolated?

A

1832

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16
Q

What year was the hypodermic syringe developed?

A

1853

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17
Q

How potent is heroin compared to morphine?

A

Three times as potent.

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18
Q

Why was heroin marketed as better than codeine?

A

It was seen as non-habit-forming.

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19
Q

Where do most opium supplies in Canada come from?

A

South and Southwest Asia.

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20
Q

What is a major source of illicit opioids in Canada?

A

Prescription medications.

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21
Q

How are prescription opioids commonly misused?

A

Snorted or injected instead of taken orally.

22
Q

How much stronger is fentanyl compared to morphine?

A

Approximately 100 times stronger.

23
Q

What is fentanyl used for?

A

Cancer-related pain in tolerant patients via transdermal patch.

24
Q

What do endogenous opioids do?

A

Activate opioid receptors in the brain.

25
Name two naturally occurring opioid-like neurotransmitters.
Enkephalins and endorphins.
26
What are the three main opioid receptor types?
Mu (μ), Kappa (κ), and Delta (δ).
27
What is the main therapeutic use of opioids?
Pain relief.
28
How do opioids treat intestinal disorders?
By reducing peristaltic contractions.
29
What is paregoric?
An opium solution still used to treat diarrhea.
30
What opioid is used as a cough suppressant?
Codeine.
31
What nonprescription opioid analogue is used in cough medicine?
Dextromethorphan.
32
What does opioid tolerance mean?
A need for higher doses to achieve the same effect.
33
What is cross-tolerance?
Tolerance to one opioid creates tolerance to others.
34
Is opioid withdrawal life-threatening?
No, it is unpleasant but rarely life-threatening.
35
How does methadone compare to heroin in withdrawal?
It causes later and less severe symptoms.
36
What is positive reinforcement in opioid use?
Experiencing a high after use.
37
What is negative reinforcement in opioid use?
Avoiding withdrawal symptoms by using the drug.
38
Which opioids are most likely to cause dependence?
Fast-acting injectable opioids.
39
What do opioids do to breathing?
They depress respiratory centers, slowing breathing.
40
What substances increase overdose risk when mixed with opioids?
Depressants like alcohol or benzodiazepines.
41
What are the symptoms of opioid overdose triad?
Coma, depressed respiration, and pinpoint pupils.
42
What chronic health problems are linked to opioid injection?
HIV, Hepatitis C, and tetanus.
43
What can opioid use mask?
Symptoms of other illnesses.
44
What is InSite?
A supervised injection site with detox support.
45
What is Onsite?
The detox facility above InSite.
46
What was the NAOMI study?
A trial evaluating heroin-assisted treatment in Canada.
47
What did the NAOMI study find?
Heroin was more effective than methadone for some users.
48
What was the purpose of the SALOME study?
To test hydromorphone vs heroin and switch to oral formulations.
49
What is naloxone?
An opioid antagonist that reverses overdose.
50
What are the effects of naloxone?
Reverses depressed respiration, causes withdrawal, blocks highs.
51
What is a key tool in the opioid crisis in BC?
Naloxone.