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41 Cards in this Set
- Front
- Back
what is the definition of congestive heart failure
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failure of heart to pump an adequate amt of blood to supply the metabolic requirements of the organs..can be due to pathologic conditions inside or outside the heart
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ways to compensate for CHF
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myocardial hypertrophy
ventricular dilation physiologic mechanisms (inc. HR, inc. intravascular volume, etc.) |
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etiology (causes) of CHF
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IHD
hypertension myocarditis cardiomyopathy valvular disease |
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what happens if you have CHF
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RV failure:
congestion of liver (nutmeg) congestion of spleen edema of subcut. tissues (feet and ankles) LV failure: pulmonary edema LV and/or RV failure: cerebral hypoxia LV failure leads to RV failure |
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cerebral hypoxia is caused by
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left or right ventricular failure
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pulmonary edema is caused by
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left ventricular failure
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congestion of liver (nutmeg) and spleen is caused by
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RV failure
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edema of subcutaneous tissues in feet/ankles is caused by
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RV failure
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RV failure causes
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congestion of liver (zonal/nutmeg pattern) and spleen; edema of subcut. tissues in feet and ankles
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___ ventricular failure leads to ____ ventricular failure
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left leads to right
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congenital heart disease is divided into 2 forms:
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cyanotic
non-cyanotic |
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what causes cyanotic congenital heart disease
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shunting of poorly oxygenated systemic venous blood to arteries BYPASSING THE LUNGS
(patent ductus arteriosus, vsd, etc.) |
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ductus arteriosis connects
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pulm artery to aorta
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tetralogy of fallot
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VSD
narrowing RV outflow overriding aorta RV hypertrophy |
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what causes IHD
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narrowing of the coronary arteries at least 75% by atherosclerosis
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4 types of IHD
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angina pectoris
acute MI chronic ischemic heart disease sudden cardiac death |
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what initiates coronary artery thrombosis
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fissure in the fibrous cap of an atherosclerotic plaque
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diagnostic tests for acute MI
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ECG changes
Elevation of serum enzymes (creatine kinase) and troponin derived from necrotic myocytes |
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pathology of acute MI (the progression of what happens)
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coagulative necrosis (few hours)
neutrophil infiltration (few days) granulation tissue (1 week) scar formation (weeks/months) C N G S |
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what is chronic ischemic heart disease
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gradual onset of chronic congestive heart failure with at least one large LEFT VENTRICLULAR SCAR (healed infarct); there is biventricular hypertrophy and dilation of all cardiac chambers
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the following symptoms describe which type of heart diseaes:
at least 1 large left ventricular scar (healed infarct), biventricular hypertrophy, dilation of all cardiac chambers |
chronic ischemis heart disease
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a patient has to survive at least ______ after a heart attack to be able to see it in an autopsy
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12 hours
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what are the 3 morphologic patterns of cardiomyopathy
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dilated
hypertrophic restrictive |
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dilated cardiomyopathy
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dilation of all 4 hrt chambers
familial in 25-35% of cases poor ventricular contraction (systolic dysfunction) |
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hypertrophic cardiomyopathy
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primary, genetic cardiomyopathy
point mutation autosomal dominant more hypertrophy in INTERVENTRICULAR SEPTUM than the left ventricle free wall obstructs left ventricular outflow cardiac disarray of myocytes |
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restrictive cardiomyopathy
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decr. vent. compliance (stiffer wall)
impaired ventricular filling during diastole |
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defn of myocarditis
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inflamm involving the myocardium
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most common cause of myocarditis in US is
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viral infection (enterovirus)
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myocarditis can be caused by
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virus (most common in US...enterovirus)
bacteria fungus parasite toxing hypersensitivity auto-immune |
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pathology of viral myocarditis
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lymphocytic infiltrate with foci of necrosis
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pathology of pyogenic bacteria myocarditis
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abscesses
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pathology of parasite myocarditis
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parasites infect individual myocetes
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pathology of hypersensitivity myocarditis
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perivascular inflammatory infiltrate with many eosinophils
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clinical manifestations of LV failure
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pulmonary edema and congestion resulting in dyspnea
chronic cough orthopnea |
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clinical manifestations of RV failure
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congestion of liver (nutmeg) and spleen
edema ("pitting") of subcutaneous tissue |
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atrio septal defects are most common in
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adults
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ventricular septal defects are most common in
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kids and may close later in life
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tetralogy of fallot
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vsd
pulm. art. stenosis aorta overrides vsd rv hypertrophy |
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sublingual nitroglycerin is used to treat
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angina pectoris and it dilates peripheral vasculature
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tests for acute MI
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ECG
elevated serum proteins (troponins T and I) enzymes like creatine kinase (CK-MB) |
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true or false: in myocarditis the inflammation is the CAUSE of the disease
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true
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