In the conduction system of the heart, which of the following components is stimulated after the sinoatrial node?
Left bundle branch
Purkinje fibers
Right bundle branch
Atrioventricular node
The Correct Answer is D
A. Left bundle branch: The left bundle branch is stimulated after the atrioventricular node and bundle of His, not immediately after the sinoatrial node.
B. Purkinje fibers: The Purkinje fibers are stimulated later in the conduction pathway, after the bundle branches.
C. Right bundle branch: The right bundle branch is also stimulated after the atrioventricular node and bundle of His.
D. Atrioventricular node: After the sinoatrial node initiates the heartbeat, the electrical impulse travels to the atrioventricular node, which then passes the signal to the bundle of His and down to the bundle branches.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Nails no longer than 1⁄2 inch: While nails should be kept short and clean, this answer does not directly address the CDC’s recommendations for hand hygiene.
B. Using alcohol-based hand sanitizer with at least 60% alcohol: The CDC recommends using alcohol-based hand sanitizers with at least 60% alcohol for effective hand hygiene.
C. Washing visibly soiled hands with soap and water for 3 to 5 min: Hand washing should be performed for 20 seconds with soap and water, not 3 to 5 minutes. The duration mentioned is excessive and not in line with standard guidelines.
D. Artificial nails without cracks or chips: The CDC advises against wearing artificial nails when providing patient care, as they can harbor bacteria and pose an infection risk.
Correct Answer is A
Explanation
A. Home health care: Home health care services include assistance with personal care and meal preparation for individuals who need help with daily activities but do not require 24-hour medical supervision.
B. Hospice care: Hospice care is focused on end-of-life comfort and pain management, not on routine personal care or meal preparation.
C. Assisted living facility: Assisted living facilities provide residential care and help with daily activities but are not arranged directly for home-based care.
D. Skilled nursing facility: Skilled nursing facilities provide more intensive medical care and supervision, which is beyond the level of personal care and meal preparation needed.
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