A nurse is attempting to identify a rhythm on an EKG and notices the P: QRS ratio is not normal. The nurse identifies the rhythm as atrial flutter. Which of the following P: QRS ratios is the nurse likely observing? Select all that apply.
a. 1:4
b. 5:1
c. 4:1
d. 4:5
e. 1:5
b. 5:1
c. 4:1
rationale: This is a characteristic of Atrial flutter. The classic sign of Atrial Flutter is a sawtooth baseline. This means there are 3, 4, 5, or more P-waves before each QRS as the atria are firing rapidly. Therefore, the P to QRS ratio in Atrial Flutter tends to be 4:1 or 5:1 depending on how many P-waves are seen.
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