Cardiovascular Flashcards
Amlodipine
Mechanism
- L-type calcium channel blocker
- Reduces cardiac and smooth muscle contractility
Vascular smooth muscle
- amlodipine = nifedipine > diltiazem > verapamil
Cardiac muscle
- verapamil > diltiazem > amlodipine = nifedipine
Clevedipine
Mechanism
- L-type calcium channel blocker
- Reduces cardiac and smooth muscle contractility
Vascular smooth muscle
- amlodipine = nifedipine > diltiazem > verapamil
Cardiac muscle
- verapamil > diltiazem > amlodipine = nifedipine
Nicardipine
Mechanism
- L-type calcium channel blocker
- Reduces cardiac and smooth muscle contractility
Vascular smooth muscle
- amlodipine = nifedipine > diltiazem > verapamil
Cardiac muscle
- verapamil > diltiazem > amlodipine = nifedipine
Nifedipine
Mechanism
- L-type calcium channel blocker
- Reduces cardiac and smooth muscle contractility
Vascular smooth muscle
- amlodipine = nifedipine > diltiazem > verapamil
Cardiac muscle
- verapamil > diltiazem > amlodipine = nifedipine
Nimodipine
Mechanism
- L-type calcium channel blocker
- Reduces cardiac and smooth muscle contractility
Vascular smooth muscle
- amlodipine = nifedipine > diltiazem > verapamil
Cardiac muscle
- verapamil > diltiazem > amlodipine = nifedipine
Dihydropyridines
Site of action
Drug list
- Act on vascular smooth muscle
- Amlodipine, clevidipine, nicardipine, nifedipine, nimodipine
Non-dihydropyridines
Site of action
Drug list
- Act on cardiac muscle
- Diltiazem, verapamil
Drug class
- Act on vascular smooth muscle
- Amlodipine, clevidipine, nicardipine, nifedipine, nimodipine
Dihydropyridines
Calcium channel blockers
Drug class
- Act on cardiac muscle
- Diltiazem, verapamil
Non-dihydropyridines
Calcium Channel Blockers
Amlodipine
Clinical Use
- Hypertension
- Angina (including Prinzmetal)
- Raynaud phenominon
Clevidipine
Clinical Use
- Hypertensive urgency/emergency
- Angina (including Prinzmetal)
- Raynaud phenominon
Nicardipine
Clinical Use
- Hypertension
- Angina (including Prinzmetal)
- Raynaud Phenomenon
Nifedipine
Clinical Use
- Hypertension
- Angina (including Prinzmetal)
- Raynaud’s Phenomenon
Nimodipine
Clinical Use
- Subarachnoid hemorrhage
- Prevents cerebral vasospasm
Diltiazem
Clinical Use
- Hypertension
- Angina
- A. Fib/Flutter
Verapamil
Clinical Use
- Hypertension
- Angina
- A.Fib/flutter
Amlodipine
Toxicity
- Cardiac Depression
- AV Block
- Peripheral edema
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Clevidipine
Toxicity
- Cardiac Depression
- AV Block
- Peripheral edema
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Nicardipine
Toxicity
- Cardiac Depression
- AV Block
- Peripheral edema
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Nifedipine
Toxicity
- Cardiac Depression
- AV Block
- Peripheral edema
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Nimodipine
Toxicity
- Cardiac Depression
- AV Block
- Peripheral edema
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Diltazem
Toxicity
- Cardiac Depression
- Peripheral edema
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Verapamil
Toxicity
- Cardiac Depression
- Peripheral edema
- Hyperprolactinemia
- Flushing
- Dizziness
- Constipation
- Gingival hyperplasia
Hydralazine
Mechanism of action
- î cGMP ⇒ smooth vessel relaxation
- vasodilates arterioles > veins
- Reduces Afterload
Hydralazine
Clinical Use
- Severe Hypertension (especially acute)
- HF (w/ organic nitrate)
- Safe for Pregnancy
- co-admin w/ beta-blocker to prevent reflex tachycardia
Hydralazine
Toxicity
- Compensatory tachycardia
- Fluid retention
- Headache
- Angina
- Lupus-like symptoms
- Contraindicated in angina/CAD
Nitroprusside
Mechanism
- Î cGMP via direct release of NO
Nitroprusside
Clinical Use
- Hypertensive Emergency
Nitrprusside
Toxicity
- Cyanide Toxicity
Fenoldopam
Mechanism
- Dopamine D1 receptor agonist
- Increased naturesis
- reduced BP
Fenoldapam
Clinical Use
- Hypertensive Emergency
- coronary, peripheral, renal, splanchnic vasodilation
Fenoldapam
Toxicity
- Reflex tachycardia
- hypotension
Nitroglycerine
Mechanism
- Vasodilation by increased NO of in vasc smooth muscle
- ⇒ ^^ cGMP and smooth muscle relaxation
- Dilate veins >> arteries
- reduces preload
Isosorbide dinitrate
Mechanism
- Vasodilation by increased NO of in vasc smooth muscle
- ⇒ ^^ cGMP and smooth muscle relaxation
- Dilate veins >> arteries
- reduces preload
Isosorbide mononitrate
Mechanism
- Vasodilation by increased NO of in vasc smooth muscle
- ⇒ ^^ cGMP and smooth muscle relaxation
- Dilate veins >> arteries
- reduces preload
Nitroglycerine
Clinical Use
- Angina
- Acute Coronary Syndrome
- Pulmonary Edema
Isosorbide dinitrate
Clinical Use
- Angina
- Acute Coronary Syndrome
- Pulmonary Edema
Isosorbide mononitrate
Clinical Use
- Angina
- Acute Coronary Syndrome
- Pulmonary Edema
Nitroglycerine
Toxicity
- Reflex Tacycardia (tx w/ Beta-blockers)
- Hypotension
- flushing
- Headache
- “Monday disease”
- in industrial exposure; tolerance for vasodilation of actionduring work week
- loss of tolerance over the weekend
- ⇒ tachycardia, dizziness, headache on re-exposure