What part of the ECG would you look for atrial depolarization?
Pwave.
Twave.
QRS complex.
ST Segment.
The Correct Answer is A
Choice A rationale:
The P wave on an ECG represents atrial depolarization, which is when the atria contract.
Choice B rationale:
The T wave represents ventricular repolarization, which is when the ventricles relax.
Choice C rationale:
The QRS complex represents ventricular depolarization, which is when the ventricles contract.
Choice D rationale:
The ST segment represents the period when the ventricles are depolarized.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The first step when a medication error occurs is to assess the client. This is to ensure the safety of the patient and to monitor for any adverse effects.
Choice B rationale:
Reporting the error to the nurse manager is important, but it is not the first step. Patient safety is the priority.
Choice C rationale:
Notifying the provider is crucial, but it comes after ensuring the patient’s safety.
Choice D rationale:
Completing an incident report is a later step in the process. The immediate concern is the patient’s wellbeing.
Correct Answer is B
Explanation
Choice A rationale:
Coronary artery disease is a chronic condition that develops over time, not typically associated with chest pain that resolves with rest.
Choice B rationale:
Angina pectoris is characterized by chest pain that often improves with rest, as the heart’s demand for oxygen decreases.
Choice C rationale:
Congestive heart failure usually presents with symptoms like shortness of breath, fatigue, and swelling, not necessarily chest pain.
Choice D rationale:
Myocardial infarction, or a heart attack, typically causes severe chest pain that does not improve with rest.
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