A nurse is teaching a health class about the heart. Which information from the class members indicates teaching by the nurse is successful for the flow of blood through the heart, starting in the right atrium?
Left atrium, right ventricle, left ventricle
Left atrium, left ventricle, right ventricle
Right ventricle, left atrium, left ventricle
Right ventricle, left ventricle, left atrium
The Correct Answer is A
A. Blood flow starts from the right atrium, moves into the right ventricle, then to the lungs, where it is oxygenated and returns to the left atrium, and then flows into the left ventricle before being pumped into the aorta.
B. This sequence incorrectly places the left atrium before the right ventricle, which is not the correct flow of blood.
C. This sequence starts incorrectly with the right ventricle, skipping the left atrium entirely after blood is oxygenated.
D. This option also incorrectly starts with the right ventricle and does not include the proper sequence of blood flow.
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Correct Answer is C
Explanation
A. Elevated blood pressure may occur with various conditions but is not a specific late sign of hypoxia.
B. An increased pulse rate can be an early compensatory response to hypoxia rather than a late sign.
C. Cyanosis, which is a bluish discoloration of the skin and mucous membranes, is a classic late sign of hypoxia, indicating severe oxygen deprivation.
D. Restlessness may indicate early signs of hypoxia or anxiety rather than a late sign and can occur before cyanosis develops.
Correct Answer is A
Explanation
A. "Readiness for enhanced urinary elimination" is classified as a health promotion diagnosis, indicating the patient’s desire to improve their health condition and adopt new health behaviors.
B. A risk diagnosis is used when there is a potential for problems to occur, not applicable in this scenario as the patient is actively seeking improvement.
C. A problem-focused diagnosis describes an existing problem that requires intervention; this situation reflects readiness for improvement, not an existing issue.
D. A collaborative problem involves potential complications that require both nursing and medical management; this case focuses on the patient's willingness to learn a self-management skill rather than managing a specific medical problem.