| Question |
Answer |
| Adenosine other names |
Adenocard |
| Class: |
Antiarrhythmic |
| Pharmacology and Actions |
A. Endogenous nucleoside – present in all cell bodies |
| Pharmacology and Actions |
B. Slows conduction time through the A-V node |
| Pharmacology and Actions |
C. Can interrupt reentry pathways through the A-V node |
| Pharmacology and Actions |
D. Removed rapidly from circulation by erythrocytes and vascular endothelial cells. Half life is less than 10 seconds |
| Indications |
A. PSVT, SVT |
| Indications |
B. PSVT associated with WPW |
| Contraindications |
A. Does not convert Atrial Flutter, Atrial Fibrillation, or Ventricular Tachycardia |
| Contraindications |
B. Second or third degree A-V block |
| Contraindications |
C. Sick sinus syndrome |
| Precautions and Side Effects |
A. Antagonized by caffeine and theophylline due to prevention of adenosine binding at receptor sites. May need larger dose. |
| Precautions and Side Effects |
B. Potentiated by dipyridamole (persantine). May need smaller dose. |
| Precautions and Side Effects |
C. May produce a short lasting first, second, or third degree heart block |
| Precautions and Side Effects |
D. In extreme cases it may cause prolonged asystole. |
| Precautions and Side Effects |
E. May produce arrhythmias at the time of conversion which should only last a short while including PVC’s, PAC’s, sinus brady, sinus tach, skipped beats and varying degrees of A-V blocks |
| Precautions and Side Effects |
F. Tegretol may result in development of high-degree blocks. May need smaller dose. |
| Precautions and Side Effects |
G. May cause dizziness, flushing, HA, numbness in arms, dyspnea, chest pain, palpitations, nausea, chest pressure, bronchospasm, feeling of impending doom and heaviness in arms and neck |
| Dosages and supplied |
1st dose 6mg push, 2nd & 3rd dose 12mg. max 30mg..... supplied 6mg/2ml or 12mg/4ml |
Ch.18 LTI-MA 509
