Chronic Chf Flashcards
Calcium channel blockers should not be used in CHF
Due to reflex sympathetic activation in case of nifedipine or direct cardiodepressant action in case of verapamil and diltiazem
Agents reducing both preload and afterload include
ACE inhibitors, angiotensin receptor blockers (ARBs), nitroprusside and alpha blockers.
Combination of hydralazine and isosorbide dinitrate
Decrease mortality
ACE Inhibitors and Angiotensin Receptor Blockers indicated in
These drugs are indicated in all grade of CHF unless contra-indicated. These can decrease mortality in CHF
How do ace i and arb dec mortality
These decrease the mortality via prevention and reversal of cardiac remodeling due to aldosterone
Ex of aldosterone antagonist
Spironolactone and epleronone are the aldosterone antagonists.
If tol dev in case of aldo antagonist
These can also be added to thiazides if tolerance develops.
Beta and chf ?
Previously beta blockers were considered to be contra-indicated in CHF due to their negative inotropic action but now it has been found that if used carefully, these drugs can increase the longevity of CHF patients.
Moa of beta blocker in. Chf
Beta-1 causes release of renin which stimulate RAAS and finally increase in aldosterone results. Beta blockers antagonize this pathway resulting in reversal of remodeling.
Most common beta blocker in chf
Most widely used beta blocker is carvedilol
Best indication of beta blocker in chf
These are best indicated in mild to moderate heart failure (NYHA class II and III) with dilated cardiomyopathy
Contraindication of beta blocker in which failure
absolutely contra-indicated in decompensated heart failure
How do we administer beta blocker
. These should be started at very low doses and the dose should be gradually increased to get the maximum benefit.
Ivabradine ufnny current blocker
It is a funny current blocker used in angina pectoris
Moa of ivabradin
It decreases myocardial oxygen demand by causing bradycardia.