QRS complexes that measure 0.12 seconds or greater and have a heart rate between 20 and 40 bpm indicate that the impulses causing ventricular depolarization are coming from the ________.

Your patient is complaining of respiratory distress. In ruling out congestive heart failure, the absence of swollen ankles would be a:

A) false positive finding. B) false negative finding. C) pertinent negative finding. D) true positive finding.

The ________ block is aligned with and typed three to four lines below the complimentary closing. 

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