A patient has been prescribed to receive 0.3 mL of U-500 insulin. Which syringe will the nurse use to administer the medication?
3-mL syringe
U-100 syringe
Needleless syringe
Tuberculin syringe
The Correct Answer is D
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.
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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.
Correct Answer is D
Explanation
A. An increase in heart rate does not directly affect hemoglobin levels; this option is incorrect.
B. A higher heart rate decreases diastolic filling time, as there is less time for the heart to fill between beats, which can lead to reduced stroke volume.
C. An increased heart rate does not inherently increase stroke volume; in fact, at very high rates, stroke volume can decrease due to reduced filling time.
D. The significant increase in heart rate to 164 beats/min can lead to decreased cardiac output due to compromised diastolic filling and reduced stroke volume.