Excited Delirium Syndrome (ExDS) Flashcards

1
Q

Which of the following is a “typical” ExDS patient?

A. First time stimulant user
B. Chronic abuser of stimulants
C. Acute-on-chronic drug abuse/mental illness patients.
D. Patients with recent severe psychiatric illness diagnosis

A

C. Acute-on-chronic drug abuse/mental illness patients.

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2
Q

The mortality rate for ExDS is approximately ____%.

A. 2
B. 8
C. 15
D. 25

A

B. 8

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3
Q

What are the common, but reversible, medical problems associated with ExDS?

A
  • hyperthermia
  • hypoglycemia
  • acidosis
  • hypoxia
  • hyperkalemia
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4
Q

Though Ketamine has more stability in its action than common anti-psychotics, benzodiazepines, etc., what is the common factor that drives Ketamine use over other medications?

A

Rapid onset of action (5-10 minutes versus 20-30 minutes)

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5
Q

Ketamine is a _____-receptor agonist.

A. Benzodiazepine
B. GABA
C. NMDA

A

C. NMDA

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6
Q

Though Ketamine is helpful in ensuring a patient maintains their airway, what potential complications may occur in Ketamine administration?

A
  • elevated BP/HR (2/2 decr. in NE, dopamine, and serotonin uptake)
  • hypersalivation
    vomiting
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7
Q

Standard IM ketamine dose?

A

5 mg/kg

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8
Q

Blockade of NMDA receptors in the CNS produces the effects of Ketamine. What type of channel is the NMDA-R?

A
  • Calcium ion channel.
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9
Q

What molecules will bind to the NMDA-R?

A

It binds to glutamate, glycine, and other allosteric molecules (EtOH, PCP, Dextromethorphan)

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10
Q

By what mechanism does ketamine work on the NMDA-R?

A

Ketamine is an uncompeitive inhibitor of the NMDA-R. Specifically, it acts to bind deep within the ion channel, blocking further Ca2+ influx, quieting the neurons.

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