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25 Cards in this Set
- Front
- Back
Given the following lab results, what is the most likely cause of this patient's BUN? BUN 45 mg/dL, Creatinine 1.8 mg/dL, Uric Acid 7 mg/dL, pH 7.22, pC02 74.4 mm Hg, p 02, 32.8 mm Hg, 02 sat. 51.3%
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Congestive heart failure
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A toxic condition involving a very high serum level of urea and accompanied by failure of the three main functions of the renal system is referred to as:
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Uremia
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The major causes of decreased plasma urea concentration include:
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Decreased protein and severe liver disease
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A plasma specimen from a hospital patient is analyzed on an osmometer and reported as 400 mOsm/Kg. What is the most likely effect on this patient's water distribution in the tissues?
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Dehydrated
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Which electrolyte would be increased in the serum if the blood specimen was hemolyzed?
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Potassium and phosphate
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A patient brought to the emergency room has the following laboratory results: sodium = 140 mmol/L glucose = 80 mg/dL BUN = 6.0 mg/dL osmolality = 3 16 mOsm/Kg H20 The calculated osmolality on this patient using the Weisberg fonnula is
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286
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You just received a blood specimen from the emergency room. According to the requisition, the patient had overdosed on an antacid medication containing bromide salts. You have been asked to run a STAT set of electrolytes on the serum. Which electrolyte would most likely be falsely elevated?
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Chloride
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The membrane substance used in the potassium ion-selective electrode is:
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Valinomycin
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One cause for a DECREASED "anion gap" is:
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A decrease in albumin
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An electrolyte panel was performed on a patient in the emergency room. The following values were reported:Sodium:150 mEq/L Potassium: 5 mEq/L Chloride: 110 mEq/L Bicarbonate: 30 mEq/L The anion gap (without using K) for this patient is:
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10 meq/L
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The method of choice for measurement of serum ionized calcium is:
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Cresolphthalein
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Bilirubin is reduced to_______ in the small intestine.
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Urobilinogen
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What is the first feature of nephrotic syndrome that results in manifestation of the other four classic signs?
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Proteinuria
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A physician calls the laboratory and asks what lab tests should be requested to assess the acid—base balance function of a patient's renal system. You reply:
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Sodium bicarbonate and blood ph
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Which protein fractions are produced in the liver is?
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Gamaglobulin
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Common clinical laboratory methods for the measurement of serum albumin are based on the properties of albumin as a/an:
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binding proteins
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The acute phase reactant protein that also inhibits proteolysis and has the highest concentration within its globulin fraction is: |
Alpha 1 antitrypsin |
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Elevations in what are most likely to indicate liver disease?
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ALP, ALT, alkaline phosphate
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A hemolyzed specimen is received in the laboratory for enzyme analysis. The assay for which enzyme values would be affected by hemolysis?
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Creatine kinase
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The most common non-reducing sugar is:
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Ascorbic acid
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Which method for glucose is the most common:
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Hexokinase
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Which enzymes has multiple molecular forms (isoenzymes) whose clinical significance is used in diagnosis? |
LD, CK, and ALP |
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An LD flip, in assessing a possible myocardial infarction, refers to:
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LD1 is greater than LD2
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Which MI marker is the most specific and sensitive and remains elevated for 14 days or more?
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Troponin t
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Which statements regarding the clinical use of CK-MB (CK-2) are true?
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Mass unit assays are more sensitive than electrophoretic method
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