What effect does chronic exposure to ultraviolet (UV) rays have on the skin that increases the risk for skin cancer?

Choice A rationale
While having a room within view of the nurses’ station can be beneficial for monitoring the patient, it does not specifically address the needs of a patient with active tuberculosis.
Choice B rationale
Placing a patient with active tuberculosis in a room with another non-surgical patient could potentially expose the other patient to the disease. Tuberculosis is an airborne disease and can easily spread to others in close proximity.
Choice C rationale
A room with air exhaust directly to the outdoor environment is the most appropriate choice for a patient with active tuberculosis. This type of room, known as a negative pressure room, helps prevent the spread of airborne diseases like tuberculosis. The air in the room is vented outside, reducing the risk of the disease spreading to other areas of the hospital.
Choice D rationale
While the ICU is equipped to handle severe and critical cases, a patient with active tuberculosis does not necessarily need to be in the ICU unless they are critically ill. Moreover, placing them in the ICU could potentially expose other critically ill patients to tuberculosis.

Choice A rationale

While an elevated serum ammonia level can indicate liver dysfunction, it is not typically a contraindication for liver biopsy. Ammonia is a byproduct of protein metabolism and is normally converted into urea by the liver, which is then excreted in the urine. Elevated levels can occur in liver disease, but they are not typically a direct concern in the context of a liver biopsy.
Choice B rationale
A hemoglobin level of 11 g/dL is slightly low, but it is not typically a contraindication for a liver biopsy. Hemoglobin is the protein in red blood cells that carries oxygen. While a low hemoglobin level can indicate anemia, it would not typically prevent a patient from undergoing a liver biopsy.
Choice C rationale
A white blood cell count of 14.2 x 103/uL is slightly elevated, indicating a possible infection or inflammation. However, this would not typically be a contraindication for a liver biopsy.
Choice D rationale
A prothrombin time of 32 seconds is significantly prolonged, indicating a potential problem with blood clotting. This would be a major concern for a nurse caring for a patient scheduled for a liver biopsy, as the procedure involves inserting a needle into the liver and could lead to bleeding. Patients with a prolonged prothrombin time are at an increased risk of bleeding complications.