Diltiazem (Cardizem)

Question 1

Class / Action

Answer 1

Calcium-channel Blocker / Slows conduction through the AV node

Question 2

Onset / Duration

Answer 2

3min Onset / Duration of 1-3hours

Question 3

Indications

Answer 3

1. To control ventricular rate in symptomatic atrial fibrillation or flutter
2. Use after adenosine to treat refractory re-entry SVT in pts with narrow complex QRS

Question 4

Contraindications

Answer 4

1. Sick Sinus Syndrome
2. 2nd or 3rd Degree Heart Block
3. A-Fib associated with WPW or short PR syndrome
4. Hypotension - Systolic <90mmHg
5. Cardiogenic shock
6. Hypersensitivity
7. Wide complex tachycardia

Question 5

Precautions

Answer 5

1. Can cause hypotension
2. Impaired renal or hepatic function
3. Patients on oral beta-blockers

Question 6

Dosages / Administration

Answer 6

1. ADULT: Initial Dose 15-20mg/2min IV. Second Dose after 15min, PRN is 20-25mg/2min IV
2. PED: CONTACT MARY BRIDGE

Question 7

Adverse Reactions

Answer 7

Bradycardia, CP, Syncope, Ventricular arrhythmia, V-Fib, Sweating/Diaphoresis, Dizziness, Dry Mouth, Headache