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Author Question: An ECG is used to diagnose all of the following conditions except A) an AV block. B) an ectopic ... (Read 57 times)

lak

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on: Feb 27, 2019
An ECG is used to diagnose all of the following conditions except
 A) an AV block.
  B) an ectopic pacemaker.
  C) angina pectoris.
  D) premature atrial contractions.
  E) ventricular tachycardia.

Question 2

Why does potassium concentration rise in patients with acidosis? What is this called? What effects does it have?


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mmpiza

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Reply #1 on: Feb 27, 2019
Answer to Question 1

C

Answer to Question 2

When pH is low, hydrogen ion levels in the blood are high and also in the interstitial and peritubular fluid. Hydrogen ion competes with potassium ion for the sodium countercurrent exchanger in the tubules. As hydrogen ion secretion rises (which compensates for the acidosis), potassium is retained and hyperkalemia develops. If severe enough, muscle cramps and cardiac arrhythmias result.


lak

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Reply 2 on: Feb 27, 2019
Excellent

ktidd

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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