🎯🪬🪬🪬🪬 Flashcards
Metabolic acidosis with a normal anion gap (AG) occurs with
A. Diabetic acidosis
B. Renal failure
C. Severe diarrhea
D. Starvation
Severe diarrhea
All are possible causes of postoperative hyponatremia EXCEPT
A. Excess infusion of normal saline intraoperatively.
B. Administration of antipsychotic medication.
C. Transient decrease in antidiuretic hormone (ADH) secretion.
D. Excess oral water intake.
Transient decrease in antidiuretic hormone (ADH) secretion.
Which of the following is an early sign of hyperkalemia?
A. Peaked T waves
B. Peaked P waves
C. Peaked (shortened) QRS complex D. Peaked U waves
Peaked T waves
Hypocalcemia may cause which of the following?
A. Congestive heart failure
B. Atrial fibrillation
C. Pancreatitis
D. Hypoparathyroidism
Congestive heart failure
The next most appropriate test to order in a patient with a pH of7.1, Pco2 of 40, sodium ofl32, potassium of4.2, and chloride of 105 is
A. Serum bicarbonate
B. Serum magnesium
C. Serum ethanol
D. Serum salicylate
Serum bicarbonate
Which of the following is FALSE regarding hypertonic saline?
A. Is an arteriolar vasodilator and may increase bleeding
B. Should be avoided in closed head injury
C. Should not be used for initial resuscitation
D. Increases cerebral perfusion
Should be avoided in closed head injury
Normal saline is
A. 135 mEq NaCl!L
B. 145 mEq NaCl!L
C. 148 mEq NaCl!L
D. 154mEqNaCl!L
154mEqNaCl!L
Fluid resuscitation using albumin
A. Is associated with coagulopathy
B. Is available as 1% or 5% solutions
C. Can lead to pulmonary edema
D. Decreased factor XIII
Can lead to pulmonary edema
Water constitutes what percentage of total body weight?
A. 30-40%
B. 40-50%
c. 50-60%
D. 60-70%
50-60%
If a patient›s serum glucose increases by 180 mg/dL, what is the increase in serum osmolality, assuming all other laboratory values remain constant?
A. Does not change
c. 10
B. 8
D. 12
10
What is the actual potassium of a patient with pH of7.8 and serum potassium of2.2?
A. 2.2 B. 2.8 c. 3.2 D. 3.4
3.4
The free water deficit of a 70 kg man with serum sodium of 154 is
A. 0.1 L
B. 0.7 L
C. lL
D. 7L
7L
All the following treatments for hyperkalemia reduce serum potassium EXCEPT
A. Bicarbonate
B. Kayexalate
C. Glucose infusion with insulin
D. Calcium
D. Calcium
An alcoholic patient with serum albumin of 3.9, K
of 3.1, Mg of 2.4, Ca of 7.8, and P04 of 3.2 receives three boluses ofiV potassium and has serum potassium of 3.3. You should
A. Continue to bolus potassium until the serum level is >3.6.
B. Give MgSO 4 IV
C. Check the ionized calcium.
D. Check the BUN and creatinine.
B. Give MgSO 4 IV
Calculate the daily maintenance fluids needed for a 60-kg female
A. 2060
B. 2100
c. 2160
D. 2400
B. 2100
A patient who has spasms in the hand when a blood pressure cuff is blown up most likely has
A. Hypercalcemia
B. Hypocalcemia
C. Hypermagnesemia
D. Hypomagnesemia
B. Hypocalcemia
The actual AG of a chronic alcoholic with Na 133, K 4, CI-101, HC03-22, albumin of2.5 mg/dL is
A. 6
B. 10
c. 14
D. 15
D. 15
The effective osmotic pressure between the plasma and interstitial fluid compartments is primarily controlled by
A. Bicarbonate
B. Chloride ion
C. Potassium ion
D. Protein
D. Protein
The metabolic derangement most commonly seen in patients with profuse vomiting
A. Hypochloremic, hypokalemic metabolic alkalosis
B. Hypochloremic, hypokalemic metabolic acidosis
C. Hypochloremic, hyperkalemic metabolic alkalosis
D. Hypochloremic, hyperkalemic metabolic acidosis
B. Hypochloremic, hypokalemic metabolic acidosis
Symptoms and signs of extracellular fluid volume deficit include all of the following EXCEPT
A. Anorexia
B. Apathy
C. Decreased body temperature
D. High pulse pressure
D. High pulse pressure
A low urinary [NH/] with a hyperchloremic acidosis indicates what cause?
A. Excessive vomiting
B. Enterocutaneous fistula
C. Chronic diarrhea
D. Renal tubular acidosis
D. Renal tubular acidosis
When lactic acid is produced in response to injury, the body minimizes pH change by
A. Decreasing production of sodium bicarbonate in tissues
B. Excreting carbon dioxide through the lungs
C. Excreting lactic acid through the kidneys
D. Metabolizing the lactic acid in the liver
B. Excreting carbon dioxide through the lungs
What is the best determinant of whether a patient has a metabolic acidosis versus alkalosis?
A. Arterial pH
B. Serum bicarbonate
C. Pco2
D. Serum C02 level
A. Arterial pH
If a patient›s arterial Pco2 is found to be 25 mm Hg, the arterial pH will be approximately
A. 7.52
B. 7.40
c. 7.32
D. 7.28
D. 7.28