PreOp Meds: H1-Ant Diphenhyramine (Benadryl) Flashcards

1
Q

What H1 antagonist stimulates ventilation? Can this overcome narcotics?

A
  • Diphenhydramine (Benadryl)
  • No
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2
Q

What is normal dosing of Benadryl?

A
  • 25 - 50mg IV
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3
Q

What is the E ½ time of diphenhydramine?

A

7-12 hours

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4
Q

What salt of diphenhydramine is useful for motion sickness and why?

A
  • Dimenhydrinate (dramamine) is thought to inhibit the afferent arc of the oculo-emetic reflex.
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5
Q

What is diphenhydramine’s primary use and secondary uses?

A
  • Antipruritic
  • Pre-treatment of known allergies (IV dye)
  • Anaphylaxis
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