DIPHENHYDRAMINE ( BENADRYL ) Flashcards Preview

FORMULARY > DIPHENHYDRAMINE ( BENADRYL ) > Flashcards

Flashcards in DIPHENHYDRAMINE ( BENADRYL ) Deck (9)
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1
Q

CLASS

A

ANTIHISTAMINE

H1 BLOCKER

2
Q

ACTIONS

A

BLOCKS HISTAMINE AT H1 RECEPTOR SITES ( COMPETES FOR THESE SITES ) WITH FOLLOWING EFFECTS IF SUCCESSFUL:

  • REVERSAL OF HISTAMINE
  • INDUCED VASODILATION
  • REVERSAL OF HISTAMINE INDUCED INCREASED CAPIILARY PERMEABILITY

**NOTE: H1 RECEPTORS CAUSES BRONCHOCONS TRICTION AND CONTRACTION OF THE GUT

  • REVERSES DRUG INDUCED EXTRAPYRAMIDAL REACTIONS (EPS) OF MUSCLE TREMOR AND RIGIDITY FROM PHENOTHIAZINES (TRILAFON, STELAZINE, COMPAZINE, PHENERGAN, THORAZINE, MELLARIL, PROLIXIN AND OTHERS) AND THE BUTYROPHENONES (HALDOL)

MILD SEDATIVE

3
Q

INDICATIONS

A

ALLERGIC REACTION

ANAPHYLAXIS, BENADRYL IS GIVEN AFTER EPINEPHRINE BECASE EPI CAUSES IMMEDIATE BRONCHODILATION OF ITS B2 EFFECTS AND VASOCONSTRICTION BY ITS ALPHA EFFECTS

ACUTE DYSTONIC REACTION (EPS)

4
Q

DOSAGE / ROUTE

A

SEE HAWAII SO

5
Q

STANDARD PREP

A

50 MG/ML

6
Q

PEDIATRIC DOSE

A

SEE HAWAII SO

7
Q

CONTRAINDICATIONS

A

HYPERSENSITIVITY

LOWER RESPIRATORY DISEASES SUCH AS ASTHMA ATTACKS

8
Q

SIDE EFFECTS

A

SEDATIONS

DRY MOUTH

THICKENING OF BRONCIAL SECRETIONS

HYPOTENSION (RARE)

9
Q

PRECAUTIONS

A

POTENTIATES EFFECTS OF ETOH / CNS DEPRESSION