The ECG you are looking at has one P wave for every QRS complex and the PR interval is 0.30 sec. What is your interpretation?

a. First-degree heart block
b. Right-axis deviation
c. Third-degree heart block
d. Atrial hypertrophy

ANS: A
In first-degree heart block, the PR interval is longer than 0.20 sec. In addition, there is one P wave before each QRS complex.

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Medical imaging includes:

A) radiology. B) MRI. C) CT. D) all of the above.

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The abbreviation ____________________ is the equivalent of unspecified.

Fill in the blank(s) with the appropriate word(s).

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