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  #1  
Old 07-29-2011
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Default hyperkalemia

1. Which is the most important site of K+ secretion in the kidney?
a. proximal tubule
b. thin descending limb of loop of Henle
c. thick ascending limb of loop of Henle
d. distal tubule convolute
e. cortical collecting duct


2. Which drug does not cause hyperkalemia?
a. furosemide
b. amiloride
c. digoxin
d. labetalol
e. trimetoprim

3. Which of the following clinical conditions typically causes hyperkalemia (answer true or false for (a) through (e))
a. acute renal failure
b. acute myocardial infarction
c. rhabdomyolysis
d. hyperaldosteronism
e. Gordonís syndrome

4. In managing a patient with severe hyperkalemia: (answer true or false for (a) through (e))
a. first aspect of management is to establish the underlying diagnosis
b. ECG may show QRS widening
c. the patient is invariably vomiting
d. in the short term, calcium gluconate may reduce risk of arrhythmias
e. ventricular fibrillation and death may occur

5. The mode of action of salbutamol and glucose/insulin is mediated by
a. an increase of renal elimination of potassium
b. a reduction of intestinal potassium intake
c. stabilization of membrane potential
d. an increase of potassium shift from extracellular into intracellular compartment
e. hypoglycemia

6. In anuric patients, treatment of hyperkalemia
a. should include diuretics
b. by increasing elimination of potassium via the gut (e.g., by enemas) may be an important option
c. is an infrequent problem
d. is always associated with cardiac symptoms
e. by shifting potassium into the intracellular department is ineffective
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Old 07-29-2011
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1. Which is the most important site of K+ secretion in the kidney?
a. proximal tubule
b. thin descending limb of loop of Henle
c. thick ascending limb of loop of Henle
d. distal tubule convolute
e. cortical collecting duct

2. Which drug does not cause hyperkalemia?
a. furosemide
b. amiloride
c. digoxin
d. labetalol
e. trimetoprim

3. Which of the following clinical conditions typically causes hyperkalemia (answer true or false for (a) through (e))
T a. acute renal failure
F b. acute myocardial infarction
T c. rhabdomyolysis
F d. hyperaldosteronism
T e. Gordonís syndrome

4. In managing a patient with severe hyperkalemia: (answer true or false for (a) through (e))
F!!! a. first aspect of management is to establish the underlying diagnosis
T b. ECG may show QRS widening
F c. the patient is invariably vomiting
T d. in the short term, calcium gluconate may reduce risk of arrhythmias
T e. ventricular fibrillation and death may occur

5. The mode of action of salbutamol and glucose/insulin is mediated by
a. an increase of renal elimination of potassium
b. a reduction of intestinal potassium intake
c. stabilization of membrane potential
d. an increase of potassium shift from extracellular into intracellular compartment
e. hypoglycemia

6. In anuric patients, treatment of hyperkalemia
a. should include diuretics = NO...the patient is anuric!
b. by increasing elimination of potassium via the gut (e.g., by enemas) may be an important option
c. is an infrequent problem
d. is always associated with cardiac symptoms
e. by shifting potassium into the intracellular department is ineffective[/QUOTE]

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Old 07-29-2011
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1. A

2. A

3.
a. True
B. False
C. True
D. False
E. True

4.
a. False
b. True
c. False
D. True
F. True

5. D

6. i think D

Btw, i hate this question hahahahaha
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  #4  
Old 07-29-2011
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1. d. DCT

2. a. furosemide

3. a. acute renal failure (T)
b. acute myocardial infarction (F)
c. rhabdomyolysis (T)
d. hyperaldosteronism (F!)
e. Gordonís syndrome (i had to look this up!) (T)

4.
a. first aspect of management is to establish the underlying diagnosis (F)
b. ECG may show QRS widening (T)
c. the patient is invariably vomiting (F)
d. in the short term, calcium gluconate may reduce risk of arrhythmias (T)
e. ventricular fibrillation and death may occur (T)

5. d. an increase of potassium shift from extracellular into intracellular compartment

6. I'm between a and b on this. Though I think you could give diuretics which may cause immense potassium loss, the patient is anuric. SO!


God, scary questions!
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Old 07-30-2011
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i wud like to knw the ans to the last q
but thanxxx these q were really helpful
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Old 07-30-2011
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Quote:
Originally Posted by qurat21 View Post
i wud like to knw the ans to the last q
but thanxxx these q were really helpful
An anuric patients, treatment of hyperkalemia

a. should include diuretics = No true...(anuric)
b. by increasing elimination of potassium via the gut (e.g., by enemas) may be an important option = TRUE (kayexalate enema)
c. is an infrequent problem = NOOOOOO
d. is always associated with cardiac symptoms = NO (key word ALWAYS)
e. by shifting potassium into the intracellular department is ineffective = NO (you could use Insuline+glucose or beta2)
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  #7  
Old 07-30-2011
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Default answers!!-hyperkalemia

1. e
2. a
3. (a) true (b) false (c) true (d) false (e) true
4. (a) false (b) true (c) false (d) true (e) true
5. d
6. b
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Old 07-30-2011
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Quote:
Originally Posted by medkary View Post
1. e
2. a
3. (a) true (b) false (c) true (d) false (e) true
4. (a) false (b) true (c) false (d) true (e) true
5. d
6. b
Which is the most important site of K+ secretion in the kidney?

ups, in UW I read:

d. distal tubule convolute = principal cells = K
e. cortical collecting duct = mostly ADH (and also K)
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