* Slight delay in the valve closure, with the aorta closing first and the pulmonary valve
S2 split
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* As blood flows rapidly from the atria into the ventricles, the vibrations of the blood flow against the ventricular wall can be heard as a third heart sound. * Gallops * This can be a normal sound in children and young adults, but in older adults it can indicate decreased ventricular muscle elasticity * Heart failure
S3
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* When the left atrium contracts against a noncompliant, stiff left ventricle. Low pitched sound, best heard with the bell piece of the stethoscope. * Associated with hypertension, because long-term hypertension causes left ventricular hypertrophy that creates a noncompliant, stiff left ventricle * LVH due to hypertension
S4
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fifth intercostal space, left midclavicular line
mitral valve
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second intercostal space, right sternal border
aortic valve
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* Innocent or functional heart murmurs, may be heard in states of high blood flow within the heart. * These heart murmurs are usually faint, and intermittent, occur in a small area of the chest, and usually do not cause symptoms.
physiologic murmurs
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Murmurs caused by anxiety, stress, fever, anemia, overactive thyroid, and pregnancy
physiologic murmurs
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* Sounds caused by abnormalities of the heart that include valvular deformities, valvular dysfunction, and heart wall defects. * Can cause heart failure * Require medical intervention to prevent complications
pathologic murmur
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Symptoms include:
shortness of breath, dizziness, chest pains, or palpitations
pathologic murmurs
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Grades of heart murmur:
* Very faint, heard only after listener has “tuned in”; may not be heard in all positions.
grade 1
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Grades of heart murmur;
* Quiet, but heard immediately after placing the stethoscope on the chest.
grade 2
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Grades of heart murmur;
* moderately loud
grade 3
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Grades of a heart murmur:
loud with a palpable thrill
grade 4
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grades of a heart murmur:
very loud, with thrill. May be heard when stethoscope is partly off the chest wall.
grade 5
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Grades of a heart murmur:
* Very loud, with thrill. May be heard with stethoscope off the chest wall.
grade 6
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Common causes of _____________ include:
* Rheumatic fever * Associated with aging, atherosclerosis * Few symptoms
* Transducer inserted into esophagus * More sensitive than TTE
* transesophageal echocardiography
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Used to diagnose valve disorders:
* Sound waves to measure velocity of blood flow across valves and in chambers; can be colorized
doppler echocardiography
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Medical treatment for valve disorders:
* Medications that is responsible for vasodilation, reducing ischemic chest pain
nitrates
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Medical treatment for valve disorders:
* Medications that is responsible for decreasing HR, and peripheral resisitance
beta-adrenergic blockers
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Medical treatment for valve disorders:
* Medications that reduce clot risk
anticoagulants
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Medical treatment for valve disorders:
* Medications that reduce blood volume overload
diuretics
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Medical treatment for valve disorders:
* Prophylactic may be needed * Deformed or artificial valves can act as a site for bacterial growth if a patient develops bacteremia * Recommended whenever patients * undergo dental treatment * other invasive procedures (including insertion of an IV)
Why some patients would need prophylactic-antibiotic treatment?
* ______ or artificial valves can act as a site for bacterial growth if a patient develops _______ * Recommended whenever patients * undergo _______ treatment * other _______ procedures (including insertion of an IV)
deformed, bacteremia, dental, invasive
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Risks vs Benefits of a _______ valve:
* ______ risk of clot formation * _______ therapy needed * Last ______
mechanical, increased, anticoagulant, longer
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Risk vs Benefit of a ________ valve:
* Porcine, _______, or human cadaver * Less _______ * 30% of patients need to ______ after 10 years * ___% need a replacement after 15 yearsÂ
bioprosthetic, bovine, durable, replace, 50
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Patho of Mitral Stenosis:
* Â _____ blood flow from left into ____ ventricle
impedes, atria, left
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Characteristics of Mitral Stenosis;
* Murmur at the apex→_____: Low pitched _____, left lateral decubitus position accentuates the murmur * Opening _____: rigid mitral valve opening * _____ cardiac output as less blood flows into left _______ * _____ of left ____ as blood can not enter left ventricle
* Increased risk of ______ fibrillation and stroke
atrial
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Commonality of mitral stenosis:
very common
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Patho for Aortic stenosis:
* Aortic sclerosis=________ of the ______ valve in the elderly
calcification, aortic
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Characteristics of Aortic Stenosis:
* Difficult for ___ ventricle to eject blood due to increased ____, leading to __ __ ___ * Murmur:Â * As the ventricle contracts (during systole), blood flows through the narrowed valve * ______, crescendo and low-pitched * _______ intercostal space with patient seated and leaning forward * Systolic ______ may be present
left, resistance, LVH, systolic, second, thrill
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Symptoms of Aortic stenosis:
* _______ dyspnea * Pulmonary ______ as blood backs up LV to LA to the pulmonary circulation * Angina ____ due to poor oxygenation of _____
exertional, edema, pectoris, LVH
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Risks of Aortic stenosis:
valve replacement
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Commonality of aortic stenosis:
very common
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Patho of mitral insufficiency:
* Mitral valve does not ____ properly
close
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Characteristics of Mitral Insufficiency:
* Murmur: ________ murmur heard at apex that radiates into ________ * Portion of blood moves from left ________ into left atria * ________ blood for ________ circulation * Post-____ due to papillary muscle damage
holosystolic, axilla, ventricle, decreased, coronary, MI
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Symptoms of Mitral Insufficiency:
* Often _________→assess post MI with echocardiography * Diminished ____ * Pulmonary symptoms due to fluid back up in the lungs * Severe chest _____
asymptomatic, S1, pain
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Risks of Mitral Insufficiency:
afib and heart failure
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Commonality of mitral insufficiency:
very rare
50
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Patho of aortic insufficiency:
* Deformed aortic valve does not ____ properly * Backflow of blood from aorta into ___ * Dilation and decreased _______ of LV * Backup of blood into _______ circulation
close, LV, contraction, pulmonary
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Characteristics of aortic insufficiency:
* Austin Flint murmur * LV impulse _____ through the chest wall * Murmur: high-pitched, blowing, _____ ______ murmur
visible, decrescendo, diastolic
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Patho Hypertrophic Cardiomyopathy;
* The ________ septum of the ___ enlarged * Asymmetric vs concentric ______ seen in LVH in response to ______ * Inhibits _______ of LV blood
interventricular, LV, enlargement, HTN, ejection
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Characteristics of Hypertrophic cardiomyopathy:
* ______ disorder * Enlarged LV compromises the functioning of aortic and mitral ______ * Murmur * Diamond-shaped ______ murmur
genetic, valves, systolic
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Risks of Hypertrophic cardiomyopathy:
* atrial and ventricular ________ * Atrial fibrillation * ______ * Non-sustained ventricular _______ * Sudden ______ due to ventricular dysrhythmias
dysthymias, PVCs, tachycardia, death
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Commonality of hypertrophic cardiomyopathy:
rare
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Patho of Mitral Valve Prolapse:
* AKA Barlow syndrome, _____ valve syndrome * Females: age 14 to 30 years; relatively _______ * Commonly __________ with unknown cause * Myxomatous degeneration of the valve tissues cause _____ closure, as leaflet(s) prolapse upward into LA * Mid-systolic click may be present followed by ________ murmur
floppy, common, asymptomatic, poor, systolic
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* MVP Syndrome: * Benign MVP with sporadic episodes of prolapse of _____ * Patient may describe dizziness, palpitations, atypical chest ____, anxiety
leaflet, pain
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Expected treatment of MVP
doesn’t require treatment
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Pulmonary stenosis;
* ______ of valve * Increased workload on ____ ventricle * May cause right ventricle ______
* Murmur * Harsh, ____ crescendo-decrescendo in ___ intercostal space on sternal border
narrowing, right, failure, systolic, 2nd
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Treatment of pulmonary stenosis
percutaneous balloon valvotomy
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Pulmonic Insufficiency:
* _____ does not close properly * _______ of right ventricle * Signs of right-side heart ______ may appear * Commonly secondary to pulmonary ______ * Other causes: congenital heart disease, RHD, and endocarditis * Murmur * Graham Steell murmur; high-pitched, decrescendo _________ murmur
A weakened ventricular muscle that is unable to sufficiently pump blood into the arterial circulation to meet the needs of the tissues.
heart failure
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Pre-existing Heart Conditions:
MI, CAD, metabolic syndrome, DM
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* Women are often diagnosed with HF at an _____ age than men because natural _____ is cardio-protective * After menopause, the risk of cardiovascular disease for men and women is ______ * Greater prevalence of HF among people of ______ origin compared with people of European origin
older, estrogen, equal, african
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* Amount heart is filled per beat * Increased EDV leads to increased SV * Volume of blood in ventricles at end of diastole * Increased in - Hypovolemia regurgitation of cardiac valves Heart Failure
preload
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* Resistance that heart pumps against * Increased afterload reduces cardiac output * Resistance left ventricle must overcome to circulate blood * Increased in-people with HTn vasoconstriction
afterload
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increase in afterload=
increase in cardiac workload
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Effects on the heart:
* Force of contraction * Ca++ and SNS activation * Positive _______ agents * Digitalis * Positive _______ agent
inotropic
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Effects on the heart:
* Rate of heart * Digitalis and beta blockers * Negative ______ effect * Epinephrine and SNS activation * Positive _______ effect
chronotropic
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Four Major pathologic:
* Increased _____ volume or volume overload * Impaired _______ filling * _________ of ventricular muscle * _________ ventricular contractile function
fluid, ventricular, degeneration, decreased
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* ____ sided heart failure due to pulmonary issues * COPD-→hypoxia-→pulmonary vasoconstriction-→____ workload on ____ side of heart
* Usually LV muscle enlarged, encroaches on ejection of blood into aorta * Primary: genetic * Secondary: due to HTN
hypertrophic cardiomyopathies
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Causes of HF:
* Irregular heart rhythm may precipitate failure * Both tachyarrhythmias and bradyarrhythmia
dysrhythmia
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Causes of HF:
* Endocarditis, myocarditis
cardiac infection
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Causes of HF:
Acute RV failure due to increased pulmonary artery pressure
pulmonary embolism
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Causes of HF:
* May occur after transmural LV MI * Valve does not close properly, backward flow into right atrium (decreased blood ejected from LV)
mitral regurgitation
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Causes of HF:
* LV must generate more pressure to eject blood
* LVH develops
aortic stenosis
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* When the body's need for blood is unusually high * Heart failure symptoms happen even though the heart is working well * Heart output can not meet high circulatory needs * Relatively uncommon * Thyrotoxicosis, severe anemia
high output
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* When the heart cannot keep up with the normal demands of the body * Weakened heart muscle * Typical heart failure
low output
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What kind of Heart Failure;
* Difficulty ejecting blood * Decreased stroke volume and cardiac output * Activation of RAAS, SNS, vasoconstriction place more stress on heart * Backup of fluid from failed ventricle
systolic
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What kind of heart failure?
* Difficulty relaxing/filling * Stiff or enlarged ventricles can not easily fill * EF may be normal (due to reduced EDV)
diastolic
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Symptoms of _______ sided heart failure:
* JVD * Ascites * Gastrointestinal disturbances caused by venous congestion * Hepatojugular reflux * Hepatomegaly * Splenomegaly  * Peripheral edema- ankle or sacral edema; fingers, feet
* Â most significant * _____: jugular vein distention * Increased central ______ pressure (CVP) * Hepato_____, splenomegaly, ascites * Hepatojugular reflex may be present * Venous congestion of _____ tract causing anorexia, nausea * Hypoxia and cyanosis may develop * Peripheral edema
JVD, venous, megaly, GI
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Forward effects of right sided heart failure
weakness and fatigue
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Implications of heart sounds:
* High ventricular volume and pressure
S3
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Implications of heart sounds:
* atrium contracting against noncompliant ventricle
S4
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The repeated simulation of the ____ increases the risk of ______. Imbalances in serum electrolytes, particularly potassium, can have adverse effects on ______ function. Hypokalemia predisposes the heart to _____. In heart failure, serum electrolytes require periodic _______ and correction if abnormal.