Diphenhydramine

Question 1

Diphenhydramine:
Classification -
1. (List of 2)

Answer 1

Classification -

1. Antihistamine, sedative.

Question 2

Diphenhydramine:
Action -
1. ___

Answer 2

Action -

1. Potent antihistame agent which possesses anticholinergic (antispasmodic), antiemetic, and sedative effects.

Question 3

Diphenhydramine:
Onset of Action -
1. IV/IO: ___
2. IM: ___

Answer 3

Onset of Action -

1. IV/IO: Immediate.
2. IM: 15-30 minutes.

Question 4

Diphenhydramine:
Duration of Action -
1. IV/IO and IM: ___

Answer 4

Duration of Action -

1. IV/IO and IM: 6-8 hours.

Question 5

Diphenhydramine: 
Indication - 
1. \_\_\_ 
     a. \_\_\_ 
     b. \_\_\_\_ 
2. \_\_\_

Answer 5

Indication -

1. Antihistamine.
   a. Anaphylaxis, use as an adjunct to epinephrine.
   b. Uncomplicated allergic conditions.
2. Dystonic or extrapyramidal reactions.

Question 6

Diphenhydramine:
Contraindication -
1. ___

Answer 6

Contraindication -

1. Hypersensitivity.

Question 7

Diphenhydramine: 
Use with Caution - 
1. \_\_\_ 
2. \_\_\_\_ 
3. \_\_\_

Answer 7

Use with Caution -

1. Hypotensive patients.
2. Glaucoma.
3. Chronic asthmatic.

Question 8

Diphenhydramine:
Dosage and Administration -
1. Adult: ___

Answer 8

Dosage and Administration -

1. Adult: 25-50 mg deep IM or slow IV/IO; maximum dose 100 mg.

Question 9

Diphenhydramine:
Adverse Reaction -
1. (List of 12)

Answer 9

Adverse Reaction -
1. Sedation, Sleepiness, Dizziness, Disturbed coordination, Epigastric distress, Dry mouth, Thickening of bronchial secretions, Hypotension, Palpitations, Tachycardia, Bradycardia, Blurred vision.

Question 10

Diphenhydramine:
Dosage and Administration -
1. Pediatric: ___

Answer 10

Dosage and Administration -

1. Pediatric: 1-2 mg/kg IM, slowly IV/IO; maximum dose 50 mg.