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103 Cards in this Set
- Front
- Back
____ is a condition in which the heart can no longer pump enough blood to the rest of the body.
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Heart Failure
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2 diagnostic tests used for heart failure are
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EKG and Echocardiogram.
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An EKG is used with heart failure because the patient is at risk for ______ and it looks at _____
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dysrhythmias
electrical activity |
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The echocardiogram looks at the
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heart chambers and the valves.
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The 3 main causes of heart failure are:
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CHD
MI HTN |
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Causes for heart failure other than CHD, MI and HTN are:
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valvular heart disease
congenital heart disease alcohol and drugs |
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The heart has the ability to adjust _____ based on the body's needs (exercise, sleep, illness).
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cardiac output
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Cardiac output=
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stroke volume x heart rate
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Heart failure occurs when there is one or more alterations in preload, afterload, contractility and heart rate leading to _____.
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decreased cardiac output.
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When the heart begins to fail, adaptive mechanisms are activated to maintain its pumping function. These 3 main adaptive mechanisms are:
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1-neuroendocrine responses (SNS, RAAS)
2-Frank Sterling Mechanism 3-Ventricular remodeling |
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Ventricular remodeling results in cardiac muscle mass ____ or _____ or ______.
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dilation
hypertrophy both |
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As heart failure progresses compensatory mechanisms become ____ to muscle function.
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detrimental
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2 neuroendocrine responses that are part of the compensatory mechanisms which take over during heart failure are:
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sympathetic nervous system and renin angiotensin aldosterone system
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When there is decreased CO and BP the aortic baroreceptors will sense it and activate the _____. This causes increased HR and contractility as well as increased ____. The result is increased _____
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SNS
vasoconstriction CO |
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When the body detects decreased renal perfusion, the ____ is activated.
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Renin angiotensin aldosterone system
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Angiotensin I is converted to Angiotensin II in the ____.
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lungs
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Angiotensin II stimulates the secretion of _____ which increases ____ and _____ retention.
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aldosterone
water and sodium |
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Angiotensin II stimulates secretion of _____ and this increases _____. Angiotensin II also causes constriction of vascular smooth muscle which increases ______.
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Aldosterone
increases preload afterload |
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The _____ initially causes an increase in end-diastolic volume and myocardial stretch- therefore a more powerful ____ and increased ______.
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Frank Starling Mechanism
contraction stroke volume |
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Eventually, the Frank-Starling Mechanism will result in ______.
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ineffective contraction
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_____ happens over time with the hearts use of compensatory mechanisms.
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Ventricular remodeling
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____ is ventricular remodeling in which the ventricular walls thin.
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Dilation
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____ is ventricular remodeling in which there is an increase in muscle cell size.
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Hypertrophy
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The most common type of heart failure is ____.
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left sided.
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____ failure means the heart is unable to contract.
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Systolic
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_____ failure means the heart is unable to relax.
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Diastolic
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The primary cause of right sided heart failure is ____.
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left sided heart failure
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Left-sided failure happens when the ____ is not effective. Blood backs up into the left atria then pulmonary veins and lungs causing _____.
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left ventricle
pulmonary congestion |
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Symptoms of pulmonary congestion include:
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SOB, cough, wheezing, crackles
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Right sided failure occurs when the blood continues to back up into pulmonary artery, right ventricle and atria, SVC/IVC and then the rest of the body causing...
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visceral and peripheral congestion
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Manifestations of Left sided heart failure are
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-paroxysmal nocturnal dyspnea
-cough, crackles, wheezes -restlessness -orthopnea, tachycardia -exertional dyspnea |
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Manifestations of right-sided heart failure are
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-ascites
-enlarged liver and spleen -distended jugular vein -anorexia -c/o GI distress -swelling in hands and fingers -dependent edema |
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If a patient has severe heart failure, the ____ heart sound may be present.
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S3
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S3 heart sounds is also called the ______.
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ventricular gallop
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S3 closes after S2. It is during ____ and when there is closure of the _____.
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diastole
AV valves |
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S3 heart sound indicates...
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increased volume of blood within the ventricle.
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The S3 heart sound appears to be related to a sudden limitation of the movement of blood during _____.
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ventricular filling
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The S3 heart sound is best heard with the ____ of the stethoscope because it is used for lower frequency sounds.
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bell side
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The New York Heart Association scale classifies heart failure based on ____ in relation to _____.
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patient's symptoms
physical activity |
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The American Heart Association and the American College of Cardiology Foundation staging system for heart failure focuses on ___ and ____.
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prevention and progression
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The Heart Failure classifications for the AHA and ACCF are
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Stages A-D
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Classification of HF with the NYHA is
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Stage I-IV
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A person with Stage ___ HF is symptomatic at rest.
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IV
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A pt with Stage D HF is
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on the heart transplant list.
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A person with Stage A HF is
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at high risk for HF
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A person with Stage B HF is _____.
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asymptomatic
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A person with Stage C HF is _____.
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symptomatic
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____ is the lab test done to see if SOB is r/t HF.
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BNP
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BNP or brain natriuretic peptide is a protein stored primarily in the _____.
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ventricular myocardium
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BNP is released when ____ rises.
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ventricular diastolic pressure
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An increased ventricular volume causes an increased ____.
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BNP
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A BNP > ____ suggests HF.
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100
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In addition to a BNP you should look at ___ and ____ for HF.
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electrolyte panel and CBC.
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Burdens of Heart Failure include:
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-Congestive symptoms
-Activity Limitation -Dysrhythmias -Hospitalizations -Reduced survival |
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Medications that are prescribed for heart failure include:
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ACE inhibitors
Angiotensin II Receptor Blockers Beta Blockers Diuretics Nitrates Cardiac Glycosides |
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"-pril" medications are _____.
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ACE Inhibitors
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_____ are the med of choice for heart failure.
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ACE inhibitors
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ACE inhibitors work by
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reducing angiotensin II synthesis and therefore reduce aldosterone secretion and cause vasodilation.
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Reduced aldosterone secretion causes ____ preload.
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decreased
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Vasodilation causes ____ afterload.
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decreased
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ACE inhibitors decrease mortality and slow
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ventricular remodeling.
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Adverse effects of ACE Inhibitors are
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hyperkalemia
hypotension renal insufficiency acute angioedema dry cough |
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A life threatening adverse effect of ACE inhibitors is ____.
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acute angioedema
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Acute angioedema is the swelling of
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face, tongue and cheeks.
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Nursing responsibilities for pt on ACE inhibitors include:
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-monitor K for hyperkalemia
-check BP -teach pt about orthostatic hypotension -educate pt abt high K foods to avoid -teach pt to report acute angioedema and dry cough |
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"sartan" medications are _____.
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Angiotensin II Receptor Blockers (ARBs)
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ARBs work in the ____ not the lungs and block the action of _____ at its receptor sites directly.
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periphery
angiotensin II |
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Nursing care for a pt on ARBs includes:
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-check BP
-monitor K (hyperkalemia) -teach pt abt orthostatic hypotension -educate abt acute angioedema |
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Dry cough is not an issue with ARBs because they do not
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work in the lungs.
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_____ don't allow conversion of Angiotensin I to Angiotensin II whereas ____ don't allow Angiotensin II to attach to receptor sites.
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Angiotensin Converting Enzyme (ACE) Inhibitors
Angiotensin II Receptor Blockers (ARBs) |
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-"olol" meds are _____.
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beta blockers
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Beta blockers work by blocking beta receptors on the heart muscle and therefore they
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decrease heart rate and contractility
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Adverse effects of beta blockers include:
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bradycardia
hypotension dizziness fatigue |
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A serious side effect of taking beta blockers is
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rebound tachycardia.
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Rebound tachycardia may be seen within ____ if beta blockers are stopped abruptly.
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48-72 hours
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Nursing care for a pt taking beta blockers includes:
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-assess HR and BP prior
-assess for a report contraindications to therapy (HF, bradycardia, AV block, asthma, COPD) -teach pt to take radial pulse before taking -med may cause fatigue |
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____ diuretics inhibit the exchange of chloride and sodium in the distal loop of henle.
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Thiazide
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______ diuretics inhibit reabsorption of Na in the distal and collecting tubules.
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K-sparing/Aldosterone Antagonists
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____ diuretics inhibit exchange of chloride, sodium and potassium in the ascending loop of henle.
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Loop
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2 diuretics that are most commonly prescribed for the HF patient due to Fluid Volume excess are:
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K-sparing and Loop diuretics
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Nurses should monitor K for patients who are on ____ diuretics.
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loop
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"-actone/-one" meds are ____.
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K-sparing diuretics (Aldosterone antagonists)
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K-sparing diuretics (Aldosterone antagonists) work by
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blocking aldosterone receptors in the distal and collecting tubules in the kidney. This increases the excretion of sodium and water.
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If a patient is on a K-sparing diuretic they should be told to
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maintain regular diet; don't increase intake of bananas, cantaloupe, etc...
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Patients with heart failure have trouble with ventricular contraction. ____ improves the ventricular contraction making it more forceful.
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Digoxin
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Cardiac Glycosides, like Digoxin, slow conduction thru the ____ and improve myocardial contraction by interfering with the _____.
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AV node
Na/K/ATPase pump |
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Digoxin binds to the N/K/ATPase pump causing more sodium to stay inside the cell and slowing down the Na Ca exchange. Since Ca is inside the cell longer there is a _____.
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more forceful contraction
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Digoxin does not cause hypokalemia, however, it the pt is already hypokalemic and digoxin is administered, they are at increased risk for ____.
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digoxin toxicity
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S/Sx of digoxin toxicity are
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anorexia, nausea, vomiting, and vision changes.
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Nursing care for a pt taking digoxin includes:
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-check apical pulse 1 full minute
-monitor for hypokalemia -check therapeutic levels -monitor for signs of digoxin toxicity -teach pt check radial pulse 1 minute at home -withhold digoxin if pulse<60 |
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The therapeutic range for digoxin is _____ng/mL.
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0.8-2.0
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1 liter fluid= ___kg= ____lb
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1 liter fluid= 1 kg = 2.2 lb
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Some nursing diagnoses for HF are
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-Decreased CO
-Excess Fld Volume -Activity Intolerance -Knowledge deficient -Ineffective Therapeutic Regimen Management |
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Nursing interventions for a patient with HF are:
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-teach about Na restriction (2g/day)
-daily weights -fluid restriction (2L/day) -avoid smoking -limit alcohol -stress management -take prescribed meds as ordered -give written med schedule |
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HF discharge instructions include providing well written instructions and or educational material regarding:
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-activity level
-diet -medications -f/u appointment -weight monitoring |
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_____ is excessive edema even when pt is on extensive medication regimen.
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Acute Pulmonary Edema
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During Acute Pulmonary Edema the lungs are....
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filling rapidly with fluid.
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Acute Pulmonary Edema is characterized by
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-dyspnea of sudden onset
-crackles -gasping respirations -rapid pulse -decreased urine output -skin that is cool, moist, ashen gray or cyanotic |
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Manifestations of Acute Pulmonary Edema include:
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-tachypnea
-labored breathing -productive cough -pink, frothy sputum -crackles, wheezes -congestion |
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Treatment options for a patient with Acute Pulmonary Edema are:
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-reduce excess fluid with loop diuretic
-O2 by mask -MS by IV -diuretics |
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MS by IV is used for Tx of Acute Pulmonary Edema because is causes ____ and reduces ____ to heart which alleviates effects of the SNS.
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vasodilation
preload |
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Pulmonary Edema is a
MAD DOG |
Morphine
Assess R, O2, lung sounds Dobutamine Diuretics (Lasix) Oxygen Gases (ABGs) |
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Positioning for a pt with Acute Pulmonary Edema includes
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HOB raised and allow feet/legs to dangle
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