Mlt Chemistry Final Part 2

Front 1

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%

Back 1

Congestive heart failure

Front 2

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:

Back 2

Uremia

Front 3

The major causes of decreased plasma urea concentration include:

Back 3

Decreased protein and severe liver disease

Front 4

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?

Back 4

Dehydrated

Front 5

Which electrolyte would be increased in the serum if the blood specimen was hemolyzed?

Back 5

Potassium and phosphate

Front 6

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

Back 6

286

Front 7

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?

Back 7

Chloride

Front 8

The membrane substance used in the potassium ion-selective electrode is:

Back 8

Valinomycin

Front 9

One cause for a DECREASED "anion gap" is:

Back 9

A decrease in albumin

Front 10

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:

Back 10

10 meq/L

Front 11

The method of choice for measurement of serum ionized calcium is:

Back 11

Cresolphthalein

Front 12

Bilirubin is reduced to_______ in the small intestine.

Back 12

Urobilinogen

Front 13

What is the first feature of nephrotic syndrome that results in manifestation of the other four classic signs?

Back 13

Proteinuria

Front 14

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:

Back 14

Sodium bicarbonate and blood ph

Front 15

Which protein fractions are produced in the liver is?

Back 15

Gamaglobulin

Front 16

Common clinical laboratory methods for the measurement of serum albumin are based on the properties of albumin as a/an:

Back 16

binding proteins

Front 17

The acute phase reactant protein that also inhibits proteolysis and has the highest concentration within its globulin fraction is:

Back 17

Alpha 1 antitrypsin

Front 18

Elevations in what are most likely to indicate liver disease?

Back 18

ALP, ALT, alkaline phosphate

Front 19

A hemolyzed specimen is received in the laboratory for enzyme analysis. The assay for which enzyme values would be affected by hemolysis?

Back 19

Creatine kinase

Front 20

The most common non-reducing sugar is:

Back 20

Ascorbic acid

Front 21

Which method for glucose is the most common:

Back 21

Hexokinase

Front 22

Which enzymes has multiple molecular forms (isoenzymes) whose clinical significance is used in diagnosis?

Back 22

LD, CK, and ALP

Front 23

An LD flip, in assessing a possible myocardial infarction, refers to:

Back 23

LD1 is greater than LD2

Front 24

Which MI marker is the most specific and sensitive and remains elevated for 14 days or more?

Back 24

Troponin t

Front 25

Which statements regarding the clinical use of CK-MB (CK-2) are true?

Back 25

Mass unit assays are more sensitive than electrophoretic method