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 A
Explanation
A. After a nurse is exposed to blood from a cut by a used scalpel, it is crucial to test the patient for bloodborne pathogens (e.g., HIV, hepatitis B, hepatitis C) and to offer post-exposure prophylaxis or treatment to the nurse if indicated.
B. While removing gloves and disposing of them properly is part of standard infection control practices, it is not the primary process required after an exposure incident.
C. Although the nurse should report the incident, providing a medical evaluation should follow the protocols established by the facility, not just the manager's assessment.
D. Properly disposing of the scalpel in a sharps container is necessary for safety but does not directly address the required process for managing exposure to blood.
Correct Answer is A
Explanation
A. Hyperkalemia can lead to dangerous cardiac arrhythmias and other heart-related complications due to its effect on the electrical conduction system of the heart, making cardiac assessment the priority.
B. While neurological assessment is important in various conditions, it is secondary to assessing cardiac status in hyperkalemia.
C. Gastrointestinal symptoms can occur with hyperkalemia, but they do not pose an immediate life-threatening risk like cardiac issues do.
D. Respiratory assessment is essential in many contexts, but the immediate threat of hyperkalemia lies in its impact on heart function, making cardiac assessment the most critical.