Pharmacology Flashcards
What are the antihypertensives that can be given in pregnancy
He Likes My Neonate
- Hydralazine
- Labetalol
- Meythldopa
- Nifedipine
What are the 2 types of CCB?
- Dihydropyridines (Dipine), act on vascular SM
- Non-Dihydropyridines (Verapamil, Diltiazim), act on heart
MOA for CCB
- Blocks voltage dependent L-type Ca channels > Decreasing the contractility
- Verapamil stronger than diltiazim
Use of Dihydropyridines except Nimodipine
HTN , Angina , Raynaud phenomenon
Use of Nimodipine
SAH (prevent cerebral vasospams)
Use of Non-dihydropyridines
HTN, Angina, Afib/ flutter
What is the side effect for All CCB
Gingival Hyperplasia
Side effect of Dihydropyridines
Peripheral edema, Flushing, Dizziness
Side effect of non dihydropyridines
Cardiac depression, AV block, constipation
Specific side effect for Verapamil
Hyperprolactinemia
MOA of Hydralazine
increases cGMP > relaxes SMC
Works on arterioles and decreases Afterload
Uses of Hydralazine
- In acute severe hypertension
- In HF (with organic nitrate)
Side effect of Hydralazine
- Compensatory Tachy
- Fluid retention
- Headache
- Angina
- Drug induced lupus
Drugs used in emergency HTN
Labetalol, Clevidipine, Nicardipine, Fenoldopam, Nitroprusside
MOA of Nitroprusside
Releases NO > Increases cGMP > Vasodilator (arteries = veins)
Side effect of Nitroprusside
Cyanide toxicity
MOA of Fenoldopam
- Dopamine D1 receptor agonist
- Decreases BP and Increases Natriuresis
Where does Fenoldopam works on
coronary, peripheral, Renal, Splanchnic
Which drug is used for post operation HTN
Fenoldopam
What are the nitrates
Nitroglycerin
Isosorbid mono/di Nitrate
MOA of Nitrates
Increases NO > Inc cGMP > relaxes SMC
Works on Veins! little bit on arteries
Dec preload
Uses of Nitrates
Acute coronary syndromes
Angina
Pulmonary edema
Adverse effects of Nitrate
- Reflex Tachy, Hypotension, Flushing, Headache
- Monday disease (loss of tolerance in the weekend for the drug)
Contraindicates of Nitrates
- Right ventricular Infarction
- Hypertrophic Cardiomyopathy
- use of PDE-5 inhibitor
MOA of Ranolazine
- Inhibits the late phase of inward Na current > reducing diastolic wall tension and O2 consumption
- Does not affect HR or Bp
Use of Ranolazine
Angina refractory to other therapies
Adverse effects of Ranolazine
Constipation, Headache, Dizziness, Nausea
MOA of Sacubitril
Neprilysin inhibitor > Prevents degradation of Natiuritic peptides, Angiotensin2 and substance P > vasodilation and dec in ECF volume
Uses of Sacubitril
Combined with Valsartan to treat HF with reduced EF (HFrEF)
Adverse effects of Sacubitril
- Hypotension
- Hyperkalemia
- Cough
- Dizziness
Which drug is contraindicated with Sacubitril
ACE inhibitors due to angioedema
How does statins affect LDL
they Increases the recycling of it by making less cholesterol
Lipid lowering drugs that cause Myopathy
Statins especially when used with Fibrates or Niacin