A patient is prescribed 250 mL of packed red blood cells to be transfused over 120 minutes. The drop factor on the tubing is 15 gtt/mL. At what rate should the nurse regulate the IV (gtt/min)? (round to the nearest whole number)
The Correct Answer is ["31"]
(Volume to be infused (mL) × Drop factor (gtt/mL)) / Time (min).
For the patient prescribed 250 mL of packed red blood cells with a drop factor of 15 gtt/mL over 120 minutes, the calculation would be (250 mL × 15 gtt/mL) / 120 min, which equals 31.25 gtt/min.
Therefore, the nurse should regulate the IV to 31 gtt/min.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D"]
Explanation
A. Increased respiratory rate - Fluid overload can lead to pulmonary edema, which causes difficulty breathing and an increased respiratory rate.
B. Increased temperature - Fluid overload does not typically cause a temperature increase. A fever may indicate infection rather than fluid overload.
C. Increased heart rate - The body compensates for fluid overload by increasing the heart rate to maintain cardiac output.
D. Increased blood pressure - Fluid overload leads to increased blood volume, which results in elevated blood pressure.
E. Increase hematocrit - Hematocrit usually decreases with fluid overload, as it is diluted by the extra fluid volume.
Correct Answer is D
Explanation
A. This type of AV block is characterized by a progressively lengthening PR interval until a QRS complex is dropped (a blocked beat). A PR interval of 0.28 seconds could be seen in 2nd degree Mobitz I (Wenckebach), not Mobitz II, which has a more irregular pattern of dropped beats
B. Atrial flutter: Atrial flutter is a type of arrhythmia characterized by rapid atrial rates (typically around 250-350 beats per minute) with a sawtooth pattern of P-waves. It does not relate to the PR interval, but rather the atrial rhythm.
C. Sinus bradycardia: Sinus bradycardia is characterized by a slower-than-normal heart rate (less than 60 beats per minute), but this does not affect the PR interval directly. A normal PR interval (0.12-0.20 seconds) can still be seen in sinus bradycardia, so the prolonged PR interval in this case makes sinus bradycardia less likely.
D. 1st degree AV block: In 1st degree AV block, the PR interval is consistently prolonged, usually more than 0.20 seconds, but it is still a constant, non-variable delay in the conduction between the atria and ventricles. A PR interval of 0.28 seconds (which is longer than normal but consistent) is characteristic of a first-degree AV block, making it the correct answer.
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