Question

The nurse is analyzing the electrocardiogram (ECG) tracing of a client newly admitted to the cardiac step-down unit with a diagnosis of chest pain. Which of the following findings indicate the need for follow-up?

a) ST segment that is isoelectric in appearance
b) PR interval that is 0.18 seconds long
c) QRS complex that is 0.10 seconds long
d) QT interval that is 0. 46 seconds long

Answer 1

An electrocardiogram (ECG) finding that requires follow-up in a patient with chest pain is a QT interval that is 0.46 seconds long, as it exceeds the normal range and can indicate a risk for serious arrhythmias.

Step-by-step explanation:

In analyzing the electrocardiogram (ECG) tracing of a client with chest pain, the findings that indicate the need for follow-up include an ST segment elevation or depression, a prolonged PR interval, a prolonged QT interval, and abnormalities in the shape and duration of the QRS complex. The options provided in the question are all within normal ranges except for the QT interval which is 0.46 seconds long. This is longer than the normal range for a QT interval, which is typically up to about 0.44 seconds based on the heart rate. An extended QT interval can be a risk factor for life-threatening arrhythmias such as Torsades de Pointes. Therefore, option (d), a QT interval that is 0.46 seconds long, would indicate the need for follow-up.