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Medical School > Brain & Behaviour > Flashcards

Brain & Behaviour Flashcards

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USMLE® Step 1 flashcards
1
Q

How do inhaled anesthetics work?

A

Produce immobility via the spinal cord. Enhance inhibitory channels and attenuate excitatory channels.

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2
Q

What is Minimum Aveolar Concentration?

A

Aveolar (or end-expiratory) concentration at which 50% of patients will not show a motor response to a standardized surgical incision.

95% of patients will not respond to 1.2 MAC. 99% to 1.3 MAC.

NOTE: MAC of different gases are ADDITIVE

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3
Q

Which is the only inhaled anesthetic to have analgesic effects?

A

Nitrous Oxide

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4
Q

What are the components of consciousness and their anatomical regions?

A

Wakefulness/alertness: Ascending Reticular Activation System (ARAS)
Awareness/reasoning: cerebral cortex

Disturbances in alertness: delirium
Disturbances in awareness: dementia
Disturbances in both: delirium or coma

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Medical School (12 decks)

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