Heparin is supplied in bags that have 25,000 units / 250 mL. What is the concentration of Heparin?
1 unit per 1mL
10 units per 1 mL
100 units per 1 mL
1000 units per 1 mL
The Correct Answer is C
A. If the concentration were 1 unit/mL, then in 250 mL there would only be 250 units total, which is much lower than the provided 25,000 units.
B. If the concentration were 10 units/mL, then in 250 mL there would be 2,500 units total, which is also much lower than the provided 25,000 units.
C. If the concentration were 100 units/mL, then in 250 mL there would be 25,000 units total, which matches the provided information. However, while this seems plausible, it is not the answer we calculated.
D. If the concentration were 1,000 units/mL, then in 250 mL there would be 250,000 units total, which is significantly higher than the 25,000 units provided.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A carotid endarterectomy does not involve bypassing the plaques; rather, it directly addresses the blockage.
B. Carotid endarterectomy is a surgical procedure that involves making an incision in the neck to access the carotid artery, where the surgeon removes the atherosclerotic plaques that are causing narrowing and restricting blood flow. This helps reduce the risk of stroke.
C. Carotid endarterectomy is not brain surgery; it is performed on the carotid arteries in the neck. The procedure aims to prevent strokes by improving blood flow to the brain, but it does not involve surgery on the brain itself.
D. This description does not accurately reflect carotid endarterectomy. The procedure does not involve resecting an artery in the brain or using a graft; rather, it focuses on removing plaques from the carotid artery in the neck.
Correct Answer is A
Explanation
A. This is a significant finding that warrants immediate notification. Changes in mental status in elderly patients can indicate a variety of issues, including infection (such as a urinary tract infection), dehydration, or other acute illnesses. Given that elderly patients are at higher risk for delirium and other cognitive changes, this finding should be taken seriously.
B. These vital signs are largely within normal limits for an elderly patient. While the blood pressure is on the higher side, the heart rate and respiratory rate are within acceptable ranges. Therefore, this does not warrant immediate notification unless other symptoms are present.
C. This statement is reassuring and suggests that the client is not experiencing complications related to the indwelling catheter, such as infection or obstruction. It does not indicate any need for immediate notification of the provider.
D. Cloudy urine with sediment can be indicative of a urinary tract infection (UTI) or other complications related to the indwelling catheter. While this finding is concerning and may require further evaluation, it is not as urgent as a change in mental status. It should still be reported to the healthcare provider but may not necessitate immediate action.
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