Correct Answer: B

Rationale: The correct answer is B because in a normal Rinne test, air conduction is heard longer than bone conduction in both ears. This is due to the fact that air conduction involves the transmission of sound waves through the external auditory canal, middle ear, and inner ear, which is more efficient than bone conduction where the sound waves are transmitted directly to the inner ear through the bones of the skull. Therefore, when the tuning fork is placed on the mastoid bone (bone conduction) and then moved next to the ear (air conduction), the sound should be heard longer through air conduction. Choice A is incorrect because normal auditory acuity does not necessarily mean equal perception in both ears. Choice C is incorrect as bone conduction should be heard shorter than air conduction in a normal Rinne test. Choice D is incorrect as the test does not determine which ear perceives sound better, but rather the difference in duration between air and bone conduction.

Correct Answer: D

Rationale: Correct Answer: D. Antagonize the action of K on the heart Rationale: 1. Calcium gluconate stabilizes cardiac cell membranes during hyperkalemia. 2. By antagonizing the effects of potassium on the heart, it helps prevent life-threatening cardiac arrhythmias. 3. It does not lower potassium levels immediately or prevent transient renal failure. 4. Administering calcium gluconate is specific to addressing the cardiac effects of hyperkalemia, not renal or overall potassium reduction.

Correct Answer: A

Rationale: The correct answer is A because in surgical asepsis, sterile articles should not touch other sterile articles or surfaces to maintain sterility. Choice B is correct as surgical team gowns are sterile in front. Choice C is correct as any breach makes the area contaminated. Choice D is correct as sterile drapes create a sterile field.

Correct Answer: B

Rationale: The correct answer is B: Respiratory acidosis. Aspirin can lead to respiratory acidosis due to its effect on the respiratory center in the brainstem. It causes hyperventilation, leading to respiratory alkalosis initially, followed by respiratory acidosis as compensation mechanism fails. Weight gain is not a typical adverse reaction of aspirin. Fine motor tremors are not associated with aspirin therapy. Bilateral hearing loss is a rare but serious side effect of aspirin overdose, not prolonged therapy.

Correct Answer: C

Rationale: The correct answer is C: “Be sure to protect your tracheostomy from pollutants such as powders, hair, and chemicals.” This instruction is appropriate because keeping the tracheostomy site clean and free from pollutants is crucial in preventing infections and complications. Powders, hair, and chemicals can lead to irritation and blockages, increasing the risk of infection. Explanation of why other choices are incorrect: A: “Never suction your tracheostomy; you might damage your trachea.” - This is incorrect because suctioning is a necessary part of tracheostomy care to clear secretions and ensure proper breathing. B: “You should not feel bad about the tracheostomy – you should feel lucky to be alive.” - This is incorrect as it does not provide practical instructions for tracheostomy care and may not address the patient's emotional concerns adequately. D: “Your tracheostomy will be cleaned each time you visit your doctor.” - This is