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. A 3-mL syringe is not appropriate for administering U-500 insulin, as the concentration may not allow for accurate dosing at such a small volume.
B. A U-100 syringe is designed for U-100 insulin and would not provide accurate measurement for U-500 insulin.
C. A needleless syringe may be useful in certain contexts, but it does not specifically provide the necessary precision for insulin dosage.
D. A tuberculin syringe is suitable for administering small doses (like 0.3 mL) and provides more accurate measurement for high-concentration insulin such as U-500.
Correct Answer is D
Explanation
A. The Good Samaritan Law typically protects individuals who provide care in emergency situations but may not apply if the actions taken are beyond the standard of care or are not in the nurse's training.
B. While the nurse's intention was to save the patient's life, the method employed was not a recognized standard procedure for airway management and may have caused harm.
C. Waiting for help may not have been an appropriate option if the patient's airway was compromised, but the method employed by the nurse was not advisable.
D. Cutting into the trachea and using a straw as a makeshift airway are actions that exceed the typical scope of nursing practice and could be deemed inappropriate, regardless of the outcome for the patient.