A nurse is reviewing the electrocardiogram (ECG) results. Which portion of the conduction system does the nurse consider when evaluating the P wave?
SA node
AV node
Bundle of His
Purkinje fibers
The Correct Answer is A
A. The P wave represents atrial depolarization, which is initiated by the SA node, the heart's natural pacemaker.
B. The AV node is responsible for conducting impulses from the atria to the ventricles but does not initiate the P wave.
C. The Bundle of His transmits the electrical impulses to the ventricles but is not directly associated with the P wave.
D. Purkinje fibers are involved in ventricular depolarization, which corresponds to the QRS complex, not the P wave.
Free Nursing Test Bank
- Free Pharmacology Quiz 1
- Free Medical-Surgical Quiz 2
- Free Fundamentals Quiz 3
- Free Maternal-Newborn Quiz 4
- Free Anatomy and Physiology Quiz 5
- Free Obstetrics and Pediatrics Quiz 6
- Free Fluid and Electrolytes Quiz 7
- Free Community Health Quiz 8
- Free Promoting Health across the Lifespan Quiz 9
- Free Multidimensional Care Quiz 10
View Related questions
Correct Answer is D
Explanation
A. Sequential compression devices are used to prevent deep vein thrombosis and are not relevant for assessing orthostatic hypotension.
B. Elastic stockings are used to promote venous return and prevent edema, not for measuring blood pressure.
C. A thermometer measures body temperature and does not provide information on blood pressure or orthostatic changes.
D. A blood pressure cuff is essential for assessing orthostatic hypotension. The nurse will measure blood pressure while the patient is supine, sitting, and standing to determine any significant changes that occur with position changes.
Correct Answer is C
Explanation
A. Certification relates to additional qualifications and does not directly involve independent nursing actions in patient care.
B. Licensure is the legal permission to practice nursing but does not describe decision-making and action in patient care.
C. Autonomy is demonstrated when the nurse independently assesses the patient’s fluid status and takes action to promote health by encouraging fluid intake. This reflects the nurse’s ability to make decisions and act based on professional judgment.
D. Accountability refers to being responsible for one's actions but does not specifically cover the independent decision-making shown here.