The nurse is checking the range of motion in a patient's knee and knows that the knee is capable of which movement(s)?
Flexion & extension.
Inversion & eversion.
Supination & pronation.
Circumduction & rotation.
The Correct Answer is A
Choice A rationale
The knee joint, a modified hinge joint, primarily facilitates movement within the sagittal plane. Flexion involves decreasing the angle between the femur and tibia, bending the knee, while extension involves increasing this angle, straightening the knee. These movements are achieved through the coordinated action of muscles like the quadriceps femoris and hamstrings, acting on the condyles of the femur and tibia.
Choice B rationale
Inversion and eversion are movements specific to the ankle and foot. Inversion involves turning the sole of the foot inward, towards the midline of the body, while eversion involves turning the sole of the foot outward, away from the midline. These movements are mediated by the subtalar and transverse tarsal joints, not the knee.
Choice C rationale
Supination and pronation are rotatory movements primarily associated with the forearm and hand. Supination involves rotating the forearm so the palm faces anteriorly or superiorly, while pronation involves rotating it so the palm faces posteriorly or inferiorly. These actions are controlled by muscles acting on the radius and ulna, not the knee joint.
Choice D rationale
Circumduction is a complex movement combining flexion, extension, abduction, and adduction, commonly seen in ball-and-socket joints like the shoulder or hip. Rotation, where a bone pivots around its own longitudinal axis, is also more prominent in these joints. While the knee has minimal rotational capability when flexed, it's not a primary movement.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["50"]
Explanation
Step 1 is to calculate the total drops to be infused. 100 mL × 15 gtt/mL = 1500 gtt.
Step 2 is to calculate the flow rate in drops per minute. 1500 gtt ÷ 30 minutes = 50 gtt/min. The final calculated answer is 50 gtt/min
Correct Answer is B
Explanation
Choice A rationale
A stat medication order signifies an immediate and urgent administration of the drug, typically within 30 minutes of the order. This is for critical situations where delay could significantly impact patient outcome, requiring prompt action rather than nurse's judgment for necessity.
Choice B rationale
A PRN (pro re nata) medication order means "as needed.”. This type of order grants the nurse professional discretion to administer the medication based on their assessment of the patient's condition and the specific criteria outlined in the order, such as pain level or fever.
Choice C rationale
A scheduled medication order involves administering the drug at regularly prescribed intervals, such as every 8 hours or once daily. The timing is predetermined, and the nurse's primary role is adherence to the schedule, with less independent judgment regarding administration necessity.
Choice D rationale
A single-dose order is for a medication to be given only once at a specific time. This is often used for preoperative medications or diagnostic procedures. Like scheduled orders, the timing is set, and the nurse's judgment about the necessity of administration is not the primary factor.
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