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Exam & Evaluation (Understanding Renal Function Tests)
 
Questions: Please respond to following statements.

1 Without at least one functioning kidney, death can occur:
  within several hours
  within a few days
  after several weeks
  within 2 to 3 months
2 The normal percentage of solids in the urine is approximately:
  2%
  3%
  5%
  8%
3 How much urine is normally excreted in a 24 hour period?
  750 ml
  1500 ml
  2000 ml
  3000 ml
4 Sodium and water pass back into the bloodstream from the renal tubule during the process of:
  renal perfusion
  tubular reabsorption
  glomerular filtration
  tubular secretion
5 Which of the following hormones are involved in renal absorption and secretion?
  aldosterone
  antidiuretic hormone
  parathyroid hormone
  all of the above
6 Which of the following conditions is associated with post renal acute renal failure?
  congestive heart failure
  viral infection
  drug induced renal damage
  benign prostatic hypertrophy
7 In addition to renal disease, which of the following conditions can affect a patientís BUN level?
  increase protein metabolism
  hydration status
  liver failure
  all of the above
8 Azotemia refers to an increase in:
  BUN
  serum creatinine
  urine osmolality
  serum osmolality
9 A patient has a massive gastrointestinal hemorrhage, which laboratory value will increase.
  hematocrit
  BUN
  serum creatinine
  creatinine clearance
10 Which of the following is a panic value for serum creatinine for an individual who is not on dialysis?
  2mg/dl
  5mg/dl
  8mg/dl
  10mg/dl
11 The only pathological condition that causes a significant increase in the serum creatinine is:
  dehydration
  muscle atrophy
  high protein diet
  nephron damage
12 Which of the following tests is an accurate measurement of the glomerular filtration rate?
  urinary urea nitrogen
  BUN
  Serum creatinine
  Creatinine clearance
13 A patient is scheduled for a creatinine clearance test and has just emptied his bladder. The patient should be instructed to:
  save all urine for the next 24 hours and then expect to have blood drawn
  consume only clear liquids while the test is in progress
  force fluids during the next 24 hours
  all of the above
14 A negative urinary urea nitrogen test indicates that a patient is deficient in:
  protein
  carbohydrate
  calcium
  sodium
15 Over a 24 hour period, urine osmolality should average:
  between 290 and 350 mOsm/Kg
  between 150 and 300 mOsm/Kg
  between 500 and 800 mOsm/Kg
16 In renal failure, the effects of drugs last longer than normal.
True     False
17 Patients who have surgery often conserve water during the immediate post-operative period.
True     False
18 An average adult produces approximately 3 liters of urine in a 24-hour period.
True     False
19 Creatinine clearance is normally lower in an 80-year-old than a 30-year-old.
True     False
20 The nurse should always check a patient's latest creatinine and BUN results before administering a potentially nephrotoxic drug.
True     False
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