MIDTERM REVIEW NR507 LATEST
UPDATE PRACTICE QUESTIONS WITH
CORRECT ANSWERS 2026
Glomerulonephritis - ans-The glomerular-capillaries can trap blood-borne Ab & Ag-
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Ab complexes
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- Causes: PRIMARY: infection, drugs, toxins, vascular disorders, ischemia, immunolo
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gic responses, free radicals. SECONDARY: DM, CHF, HIV, Lupus
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Triggering event (infection)- Ag-Ab complex formation & deposition in glomerulus-
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Activation of complement system & WBC infiltration- Glomerular injury & leakage-
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Proteinuria/hematuria- edema, increase creat, azotemia, oliguria
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OR
after glomerular injury & leakage-
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Coagulation cascade activation & FIbrin deposition- Decreased capillary perfusion-
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decreased GFR- edema, increase creat, azotemia, oliguria
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S1 - ans--Closing of mitral and tricuspid valve
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- Beginning of systole
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S2 - ans-- Closure of the aortic and pulmonic valve
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- End of systole
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Valvular stenosis - ans- ws ws ws
the valve orifice is constricted and narrowed, impeding the forward flow of blood and
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increasing the workload of the cardiac chamber proximal to the diseased valve. Intr
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aventricular or atrial pressure increases in the chamber to overcome resistance to fl
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ow through the valve. Increased pressure causes the myocardium to work harder, c
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ausing myocardial hypertrophy.
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Aortic stenosis - ans-- LV hypertrophy
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- L heart failure
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- Pulmonary edema
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- Exertional dyspnea
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-Syncope
-Angina pectoris ws
- Systolic murmur
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, Mitral Stenosis - ans-- LA hypertrophy
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-R ventricular failure
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- Pulmonary edema
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- Orthopnea
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- Respiratory infection s
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- PH
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-Edema
-Atypical chest pain ws ws
- Diastolic murmur
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Stroke volume - ans-The volume of blood ejected per bear during systole
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Cor Pulmonale - ans-
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right ventricular hypertrophy and heart failure due to pulmonary hypertension
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Cardiac output - ans-HR x SV
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-Normal= 5Lpm ws
-Preload, afterload, contractility, heart rate
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Preload - ans-The volume inside the ventricle at the end of diastole
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Determined by: ws
- Amount of venous blood returning to the ventricle during diastole
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- The amount of blood in the ventricle after systole
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Afterload - ans-The resistance to ejection of blood from the ventricle
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total peripheral resistance (TPR)
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Systemic vascular resistance (SVR) ws ws ws
Contractility - ans-sympathetic nervous system, epi and norepi) + inotropes
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Acetylcholine released from vagus nerve - inotrope ws ws ws ws ws ws
Cytokines released during sepsis impair contractility
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O2 < 50% decreased contractility
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Troponin - ans-Relaxing proteinws ws ws ws
Troponin T- aids in binding the troponin complex to actin and tropomyosin
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Troponin I- Inhibits the ATPhase of actomyosin
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