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 C
Explanation
Choice A rationale:
Captopril is an ACE inhibitor, not a beta blocker. It’s used to treat hypertension, but it’s not a beta blocker.
Choice B rationale:
Warfarin is an anticoagulant, not a beta blocker. It’s used to prevent blood clots, not to treat hypertension.
Choice C rationale:
Atenolol is a beta blocker. It’s often prescribed for hypertension because it can reduce the workload on the heart and help it beat more regularly.
Choice D rationale:
Aspirin is a nonsteroidal anti-inflammatory drug (NSAID), not a beta blocker. It’s often used to reduce pain or inflammation, and can help prevent heart attacks in some people, but it’s not used to treat hypertension.
Correct Answer is A
Explanation
Choice A rationale:
Fatigue is a common symptom of iron deficiency due to the body’s inability to produce enough hemoglobin, which helps carry oxygen in the blood.
Choice B rationale:
Goiter, an enlargement of the thyroid gland, is not related to iron deficiency but rather iodine deficiency.
Choice C rationale:
Tooth decay is generally caused by bacteria in the mouth and poor oral hygiene, not iron deficiency.
Choice D rationale:
Tetany, involuntary contraction of muscles, is typically associated with low calcium levels, not iron deficiency.
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