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TLS Online TPP Program

#Question id: 11939

Which of the following would cause the greatest degree of hyperkalemia?

#Unit 7. System Physiology – Animal
  1. Increase in potassium intake from 60 to 180 mmol/day in a person with normal kidneys and a normal aldosterone system
  2. Chronic treatment with a diuretic that inhibits the action of aldosterone
  3. Decrease in sodium intake from 200 to 100 mmol/day
  4. Chronic treatment with a diuretic that inhibits loop of Henle Na+-2Cl−-K+ co-transport
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TLS Online TPP Program

#Question id: 12480

#Unit 7. System Physiology – Animal

A patient’s one remaining kidney has moderate renal artery stenosis that reduces renal artery pressure distal to the stenosis to 85 mm Hg, compared with the normal level of 100 mm Hg. Which of the following is most likely decreased in this patient 2 weeks after the stenosis has occurred, assuming that his diet is unchanged?
TLS Online TPP Program

#Question id: 12390

#Unit 7. System Physiology – Animal

 Which of the following statements is true?
TLS Online TPP Program

#Question id: 12389

#Unit 7. System Physiology – Animal

In a patient with very high levels of aldosterone and otherwise normal kidney function, approximately what percentage of the filtered load of sodium would be reabsorbed by the distal convoluted tubule and collecting duct?
TLS Online TPP Program

#Question id: 12388

#Unit 7. System Physiology – Animal

Which of the following has similar values for both intracellular and interstitial body fluids?
TLS Online TPP Program

#Question id: 12387

#Unit 7. System Physiology – Animal

An elderly patient complains of muscle weakness and lethargy. A urine specimen reveals a Na+ concentration of 600 mmol/L and an osmolarity of 1200 mOsm/L. Additional laboratory tests provide the following information: plasma Na+ concentration = 167 mmol/L, plasma renin activity = 4 ng angiotensin I/ml/hr (normal = 1), plasma antidiuretic hormone (ADH) = 60 pg/ml (normal = 3 pg/ml), and plasma aldosterone = 15 ng/dL (normal = 6 ng/dL). Which of the following is the most likely reason for this patient’s hypernatremia?
TLS Online TPP Program

#Question id: 12386

#Unit 7. System Physiology – Animal

Which of the following changes would you expect to find in a patient who developed acute renal failure after ingesting poisonous mushrooms that caused renal tubular necrosis?