NURS 3220 Lecture 20: Heart Failure
Document Summary
Direct and indirect costs: billion / year. 20% are likely to die within 1 year. 50% are likely to die within 5 years. Diet (mediterranean) & exercise can impact hypocholesteremia, hypertension and heart disease (preventable) Ventricular dysfunction (ventricles don"t work the way they should) Syndrome in which the heart is unable to pump sufficient blood to meet the metabolic needs of the tissues (at rest and with activity) Inadequate perfusion (forward effects of hf result of hf) Decrease cardiac output decrease in blood flow to renal artery activation of raas to try and raise bp increase release of aldosterone (water conservation) and angiotensin. In hypertension, inhibit raas (inhibit angiotensin 2 and aldosterone release), how meds work. When hypertension not controlled, heart will feel stress (too much volume, end diastolic filling pressure preload) and increased tone of vessels (afterload, vasoconstriction, pressure the heart has to pump against)
