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 D
Explanation
A. Chest physiotherapy is used to mobilize secretions and improve lung function, not specifically for increasing stroke volume or preload.
B. Diuretics would decrease preload by removing excess fluid, which is counterproductive in a patient with inadequate stroke volume related to decreased preload.
C. Vasodilators can further decrease preload and are not appropriate in this scenario where preload needs to be increased.
D. Intravenous (IV) fluids are administered to increase preload and improve stroke volume by enhancing the circulating blood volume.
Correct Answer is ["A","B","C","D","F"]
Explanation
A. Applying knowledge of disease processes is essential in preventing the spread of infections and understanding transmission routes.
B. Proper disposal of supplies is crucial in minimizing the risk of cross-contamination and infection spread.
C. Checking the negative-pressure system is critical to ensure it functions properly to contain airborne pathogens.
D. Hand hygiene is a key practice in preventing infection and should be performed before and after patient contact in both scenarios.
E. This statement is misleading; while some precautions may overlap, there are specific differences that must be addressed in interventions for airborne versus contact precautions.
F. It is important for patients in airborne precautions to wear a mask during transportation to prevent the spread of infectious particles.