Aacn Ecg Written Exam

What part of the heart does Lead 1 view? {Ans: The lateral wall of the heart.}Select the chamber of the heart where the pressures are the highest. {Ans: Left ventricle.}On the ECG tracing, capture is identified by: {Ans: The presence of a pacing spike followed by the response of the atrium or ventricle to the stimulus.}A Second Degree AV Block Type II has a high risk of progressing to complete heart block. {Ans: True}PVCs are always harmful and need to be treated. {Ans: False}The three periods of the refractory phase of the cardiac cycle are: {Ans: Absolute, Relative, and Vulnerable}