Correct Answer: D

Rationale: The AP position stands for Anteroposterior Projection. When a patient is in the AP position for an X-ray, they are facing away from the X-ray film. This positioning allows for a clear view of the structures being imaged from front to back.

Choices A, B, and C are incorrect because the patient is not facing or positioned against the X-ray film in the AP position, but rather facing away from it to capture the necessary diagnostic information.

Correct Answer: C

Rationale: Increasing the sensitivity control to 20 mm deflection will double the sensitivity, allowing for better observation of the small QRS complexes. This step is crucial in obtaining a clearer EKG reading.
Choice A is incorrect because small QRS complexes do not necessarily indicate impending cardiac arrest; it's more likely a technical issue.
Choice B is not the first step to take when small QRS complexes are observed; it's important to adjust the settings first.
Choice D is incorrect because decreasing the run speed to 50 is not the appropriate action for this situation; adjusting the sensitivity control is more relevant to improve the visualization of the complexes.

Correct Answer: D

Rationale: Each small square on an EKG paper represents 0.04 seconds long and 1mm tall. This standardization is essential for accurate measurements. One large square on EKG paper consists of 5 small squares in length and 5 small squares in height, which equals 0.2 seconds long and 5mm tall (0.5 mV).
Choice A is incorrect because while the duration is correct, the height mentioned is not accurate.
Choice B is incorrect as it provides the correct height but the duration is inaccurate.
Choice C is incorrect as the height mentioned is exaggerated, and the duration is correct but the height is not.
Therefore, the correct answer is 0.04 seconds long and 1mm tall.

Correct Answer: A

Rationale: The correct technique for a three-point gait involves the injured leg moving simultaneously with both crutches, followed by the uninjured leg. This gait pattern is utilized when the patient is unable to bear full weight on one of their legs.
Choice A accurately describes the appropriate sequence of movements for the three-point gait technique.

Choices B and C do not accurately reflect the correct pattern of movement during the three-point gait technique, making them incorrect.
Choice D is incorrect as there is a correct option among the choices provided.

Correct Answer: D

Rationale: Bilirubin is easily broken down by light, so all samples testing positive for bilirubin should be protected from light exposure. Storing the specimen in an area protected from light helps maintain the integrity of the bilirubin levels for accurate testing.
Choice A is incorrect because the presence of bilirubin in urine does not necessarily indicate kidney disease.
Choice B is incorrect as the exposure to light, not room temperature, affects bilirubin levels.
Choice C is incorrect as the presence of bilirubin does not indicate the presence of bacteria in the specimen.