Choice B rationale:
Benign tumors typically grow in the wrong place or at the wrong time. This is a key distinguishing feature of benign tumors compared to normal cells. Normal cells have precise mechanisms that control their growth, ensuring they divide and multiply only when and where they are needed. Benign tumors, however, have disruptions in these regulatory mechanisms, leading to abnormal growth patterns. This means they may grow in locations where they don't belong or continue to grow even when they are no longer needed.
Here's a detailed explanation of why the other choices are incorrect:
Choice A:
Benign tumors have not lost their cellular regulation from contact inhibition. Contact inhibition is a process that stops normal cells from growing when they come into contact with other cells. Benign tumors still maintain this ability, which helps to limit their growth and prevent them from spreading to other tissues.
Choice C:
Benign tumors do not grow through invasion of other tissue. Invasion is a hallmark feature of malignant tumors (cancers). Benign tumors, on the other hand, typically grow as encapsulated masses, meaning they are surrounded by a well-defined border that separates them from surrounding tissues. They do not infiltrate or invade surrounding structures.
Choice D:
Anaplasia refers to the loss of differentiation and resemblance to the parent cells, which is a characteristic of malignant tumors, not benign tumors. Benign tumors still maintain a degree of differentiation, meaning they retain some of the characteristics of the normal cells from which they originated.

Rationale for Choice A:

Arranging for a bedside commode can be helpful for patients who have difficulty ambulating to the bathroom. However, it is not the most effective intervention for preventing falls in an ambulatory and independent patient. In fact, it could potentially increase the risk of falls if the patient attempts to use the commode without assistance or if they become disoriented in the dark.

Research has shown that bedside commodes are associated with an increased risk of falls in hospitalized patients. This is because patients may try to get out of bed to use the commode without assistance, or they may become disoriented in the dark and fall.

Additionally, bedside commodes can be a tripping hazard, especially for patients with impaired mobility.

Rationale for Choice B:

Ensuring the bathroom light is kept on during the night can help to reduce the risk of falls by making it easier for the patient to see. However, it is not the most effective intervention for preventing falls.

Patients may still fall even if the bathroom light is on, especially if they are weak, unsteady, or have impaired vision. Additionally, keeping the bathroom light on all night can disrupt the patient's sleep, which can also increase the risk of falls.

Rationale for Choice C:

Using side rails to keep the patient in bed is not an effective intervention for preventing falls. In fact, it can actually increase the risk of falls by making it more difficult for the patient to get out of bed safely.

Patients may try to climb over the side rails, which can lead to falls.

Additionally, side rails can restrict the patient's movement and make them feel trapped, which can lead to agitation and an increased risk of falls.

Rationale for Choice D:

Implementing a toileting schedule is the most effective intervention for preventing falls in an ambulatory and independent patient. This is because it helps to reduce the patient's need to get out of bed at night to use the bathroom.

When a patient has a scheduled time to toilet, they are less likely to try to get out of bed on their own and risk a fall. Additionally, a toileting schedule can help to prevent incontinence, which can also lead to falls.