An ECG technician is performing an ECG on a hospital patient who ...

[shenderson6]

An ECG technician is performing an ECG on a hospital patient who has developed hypokalemia secondary to diuretic use. Which of the following manifestations of the client's health problem will the technician anticipate on the ECG?
 
  A)
  Irregular heart rate and a peaked T wave
  B)
  A low T wave and an absent P wave
  C)
  A prominent U wave and a flattened T wave
  D)
  A narrow QRS complex and an absent U wave

Question 2

A 42-year-old female client with a long-standing history of chronic nausea and vomiting but a near-insatiable appetite has had her symptoms attributed to an enzyme deficiency.
 
  Further diagnostic testing indicates that she has inadequate pancreatic enzyme levels and that her large appetite is due to a lack of enzyme control of food intake inhibition. In which of the following enzymes is the woman most likely deficient?
  A)
  Cholecystokinin
  B)
  Ghrelin
  C)
  Gastrin
  D)
  Secretin

[cpetit11]

Answer to Question 1

Ans:
C

Feedback:

ECG changes associated with hypokalemia include a prominent U wave and a flattening of the T wave. Atrial fibrillation, a low P wave, and the absence of a U wave are not associated with hypokalemia.

Answer to Question 2

Ans:
A

Feedback:

Cholecystokinin is responsible for inhibiting food intake as well as stimulating pancreatic enzyme secretion. Ghrelin stimulates food intake, while gastrin stimulates gastric acid production, and secretin inhibits it.