SNS Blockers: Alpha-Adrenergic Blockers Flashcards
1
Q
Medications
A
“Phen-“ and “-amine”
- Phenoxybenzamine
- Phenotolamine
2
Q
Actions
A
- Blocks alpha 1 receptors: vasodilation resulting in decreased BP
- Blocks alpha 2 receptors: prevents norepinephrine feedback loop resulting in increase in reflex
3
Q
Indications
A
-Diagnose and manage episodes of pheochromocytoma
4
Q
Contraindications
A
- Allergy
- CAD
- MI
5
Q
Drug-Drug interactions
A
-Alcohol
6
Q
Adverse effects
A
- Increased reflex tachycardia
- GI effects
- CNS: HA, weakness, dizziness
- Related to vasodialtion: hypotension, flushing, arrhythmia, angina
