A nurse is preparing to administer a continuous heparin infusion at 1600 units/hr. Available is heparin 25.000 units in dextrose 5% in water (DSW) 500 mL The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["32"]
1. Determine the concentration of heparin in the solution:
- There are 25,000 units of heparin in 500 mL of D5W.
- Concentration = 25,000 units / 500 mL = 50 units/mL.
2. Calculate the required mL/hr for the desired infusion rate:
- The order is for 1600 units/hr.
- To find the mL/hr:
ML/HR=desired units/hr divided by unts/ml
=1600/50
=32ml/hr
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Correct Answer is B
Explanation
A. Inability to move toes may be a sign of tightness in the cast, but it is not the first finding to be expected if the cast is too tight.
B. Pallor of the toes indicates compromised blood flow and is the earliest sign of circulatory impairment due to tightness of the cast.
C. Change in temperature of the toes may be a sign of impaired circulation, but it is not the earliest finding to be expected.
D. Edema of the toes may occur as a result of compromised circulation, but it is not the first finding to be expected if the cast is too tight.
Correct Answer is D
Explanation
A. Rowing - This activity can put strain on the lower back and may exacerbate low back pain.
B. Tennis - This sport involves a lot of twisting and sudden movements, which can potentially worsen low back pain.
C. Canoeing - While generally a low-impact activity, it still requires core stability which could potentially aggravate low back pain.
D. Swimming - Swimming is a highly recommended exercise for individuals with low back pain. It is a low-impact activity that helps strengthen the muscles in the back, as well as other parts of the body, without putting excessive strain on the spine. Additionally, the buoyancy of water provides support, reducing the impact on the joints.
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