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 B
Explanation
A. A Yankauer suction tip catheter is used for suctioning secretions and does not assess cardiac function or afterload.
B. A blood pressure cuff is essential for measuring blood pressure, which can indicate increased afterload through elevated systemic vascular resistance.
C. An oxygen cannula is used for delivering supplemental oxygen and does not provide information about cardiac afterload.
D. A pulse oximeter measures oxygen saturation, which is not directly related to assessing cardiac afterload.
Correct Answer is C
Explanation
A. While monitoring cardiac output can provide insights into heart function, it does not directly determine the presence of dysrhythmias.
B. Peripheral extremity circulation is influenced by cardiac output but is not the primary focus of monitoring it.
C. Cardiac output is essential for determining the heart's ability to meet the body's oxygenation requirements; low cardiac output can lead to inadequate oxygen delivery.
D. Ventilation status refers to the respiratory function and is not directly assessed through cardiac output measurements.