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 D
Explanation
Choice A rationale:
Cardiac output is the amount of blood the heart pumps through the circulatory system in a minute. It is not the volume of blood ejected from the ventricles during each beat.
Choice B rationale:
The cardiac cycle refers to the sequence of events that occur when the heart beats. It is not the volume of blood ejected from the ventricles during each beat.
Choice C rationale:
Systole is the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries. It is not the volume of blood ejected from the ventricles during each beat.
Choice D rationale:
Stroke volume is the volume of blood ejected from the ventricles during each beat. This is the correct answer.
Correct Answer is D
Explanation
Choice A rationale:
Orange essential oil is known for its uplifting and worry-reducing properties, not necessarily for promoting sleep.
Choice B rationale:
Ginger essential oil is often used for its anti-inflammatory properties and can help with digestion, but it doesn’t directly promote sleep.
Choice C rationale:
Peppermint essential oil is commonly used for its refreshing and invigorating properties, not for sleep promotion.
Choice D rationale:
Lavender essential oil is widely recognized for its calming and soothing properties, which can promote sleep.

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