Heart Failure/Valvular disease Flashcards
What are causes of right sided heart failure?
Left sided heart failure
Right ventricle MI
Pulmonary hypertension
What is the most common cause of left sided heart failure?
Hypertension
Describe left systolic heart failure.
Heart cannot pump forcefully enough to perfuse tissues
Describe left diastolic heart failure
Left ventricle cannot relax preventing filling (preload)
What are the 4 ways the body compensates for decreased cardiac output due to heart failure?
- Sns stimulation- increase HR and BP to increase CO
- RAAS- activated to increase preload and afterload
- Chemical/hormonal response- BNP (promotes vasodilation and diuresis) and ADH (fluid retention with release)
- Myocardial hypertrophy- walls thicken to increase force of contraction
What is ejection fraction?
Normal?
< 40% indicates what?
% of blood pushed out with ventricular contraction
Normal 60-70%
<40% not ejection enough blood, systolic left heart failure
What is the best way to diagnosis heart failure?
Echocardiogram
What is BNP lab test?
How does the BNP level distinguish from heart or lung failure?
blood natriuretic peptide
If high- sob by heart failure
If normal- sob caused by lung dz ( COPD/ pneumonia)
Normally BNP Is very low number
What are the common electrolyte imbalances seen with heart failure?
Hypokalemia
Hypo magnesium
Hypernaturemia- sodium retention 2* RAAS and diuretics
What is acute de compensated HF?
What are symptoms of ADHF?
Acute onset of HF
Bags for O2 and CO2 levels – risk for respiratory acidosis
Hemodynamics monitoring for cardiac function and fluid volume status
In left sided heart failure with hemodynamics monitoring, what happens to the pulmonary artery pressure/pulmonary artery wedge pressures?
Elevated.- fluid overload need diuretics to remove excess fluid
According to HF algorithm
, what are interventions
If EF is >50%…..
If EF is 40-50%…….
If EF is < 40%….
If EF is >50%…..encourage HTN control
If EF is 40-50%…….ACE inhibitors, ARB, consider beta blocker
If EF is < 40%….ACE inhibitor, ARB, beta blockers, dig, diuretics, VAD
What are 4 common nursing diagnosis for HF?
Impaired gas exchange
Decreased CO
Activity intolerance
Risk for pulmonary edema
What does the acronym UNLOAD FAST stand for in trying to improve gas exchange in HF patients?
Upright position Nitrates Lasix Oxygen ACE inhibitors Digoxin
Fluids decreased
Afterload decreased
Sodium restriction
Test dig level, ABGs, k* levels
What are the early manifestations of pulmonary edema you should be assessing for?
Crackles at base and moving upward Dyspnea at rest Confusion/disoriented Frothy blood tinged sputum Cold clammy sweaty skin Anxiety
What are the priority interventions for treating pulmonary edema?
Elevated HOB
Oxygen at 5-6 liters face mask or 10-15 L nonrebreather O2>90%
IVP Lasix/ bum ex
Nitro- reduce preload and afterload
IV morphine to reduce preload and anxiety
Resp therapy for CPAP/BiPAP
What does the acronym MAWDS stand for related to patient self management?
Meds- take as prescribed, know purpose and SE, avoids NSAIDS
Activity- stay inactive but not too strenuous
Weight- monitor weights daily, report changes
Diet- limit Na+ to 2-3G/ day, fluid intake
Symptoms- report to HCP ( rapid weight gain, decreased exercise tolerance, excessive nocturia, cold/flu symptoms > 3-5 days, dyspnea/ angina at rest, increased edema
What is mitral valve stenosis?
Leaflets ate stiff and narrowed opening prevents blood flow
What is mitral valve regurgitation?
Leaflets don’t close completely so blood back flows as heart beats
What is aortic stenosis
Aortic valve narrowing (wear and tear)
S1 sound is what?
Tricuspid and mortal valve close
Lub
S2 sound is what?
Aortic and pulmonary valves close
Dub
Where on the EKG do you see the S1 sound?
QRS (mitral valve closes)
Where on the EKG do you see the S2 sound?
T wave ( aortic valve closes)