Quiz 03 - 1 of 20 The overriding effect of the renal f...

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1 of 20 The overriding effect of the renal fluid-volume mechanism over long-term blood pressure can be explained by the: A. Ability of the kidney to sense momentary changes in salt intake B. High blood flow to the kidneys relative to other organs C. High sensitivity of the kidney to small changes in blood pressure D. Necessary equivalence of long-term salt intake and excretion Question 2 of 20 An increase in total peripheral vascular resistance: A. Is the cause of most cases of chronic hypertension B. Occurs as a result of blood flow autoregulation in most cases of chronic hypertension C. Occurs only in cases of chronic hypertension caused by increased levels of angiotensin II D. Rarely occurs in chronic hypertension Question 3 of 20 Laboratory Data on Admission Serum sodium (mEq/liter) 130 Plasma osmolarity (mOsm/liter) 280 Urine osmolarity (mOsm/liter) 900 V (liters/day) 0.9 Urine sodium (mEq/liter) 7 Urine potassium (mEq/liter) 48 A 78-year-old woman with congestive heart failure has the laboratory data shown above when admitted to the hospital with pulmonary edema. If it is assumed that her insensible water losses are approximately 500 ml/day, the maximum amount of water that she can ingest daily (in liters/day) to avoid lowering her serum sodium is approximately: A. 2. 8 B. 2. 0 C. 1.0 D. 0.6 E. 0. 4 Question 4 of 20 Laboratory Data after Treatment with Furosemide Serum sodium (mEq/liter) 125 Plasma osmolarity (mOsm/liter) 265 Urine osmolarity (mOsm/liter) 265 V (liters/day) 2.9 Urine sodium (mEq/liter) 60 Urine potassium (mEq/liter) 50 The patient described in question 3 is treated with IV furosemide for 24 hours; repeat laboratory data are shown in the above table. Noting that her serum sodium decreased following the administration of furosemide and assuming that her insensible water losses remain at approximately 500 ml/day, you estimate that her water intake (in liters/day) must have exceeded: A. 2.9 B. 2.5 C. 2.0 D. 1.1 E. 0.85 Question 5 of 20 A patient has the option of undergoing surgery or proceeding with medical treatment. If he goes to surgery, he has a 0.05 chance of dying but will be free of disease if he
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survives (i.e., he has a 0.95 chance of becoming disease- free). The utilities for being dead and being free of disease are 0 and 10, respectively. Building a decision tree from this
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This note was uploaded on 09/14/2011 for the course PHARM rs taught by Professor Staff during the Spring '11 term at UCSD.

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Quiz 03 - 1 of 20 The overriding effect of the renal f...

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