Snellen chart 20/ 80

Correct Answer: A

Rationale: The correct answer is A because in a Snellen chart, the first number represents the distance at which the test is conducted, which is typically 20 feet. The second number indicates the distance at which a person with normal vision can read the same line that the patient being tested can read. In this case, 20/80 means the patient can read at 20 feet what a person with normal vision can read at 80 feet. Choice B is incorrect as 80 is not the patient's distance but the standard distance for comparison.

Correct Answer: A

Rationale: The correct answer is A: Document. After taking a temperature, it is crucial to document the reading for accurate record-keeping and monitoring. Documenting the temperature allows for tracking trends, assessing changes, and providing necessary information for healthcare providers. Clicking a button (Choice B) or leaving the field blank (Choices C and D) do not fulfill the essential task of documenting the temperature, which is critical for proper healthcare management.

Correct Answer: A

Rationale: The correct answer is A: Obstruction. Middle ear problems can lead to hearing issues due to blockages or obstruction in the ear canal or Eustachian tube. This obstruction can prevent sound waves from reaching the inner ear, affecting hearing. Choices B, C, and D do not directly relate to middle ear problems causing hearing issues. Cochlea is a structure in the inner ear responsible for converting sound vibrations into electrical signals, which is not the primary cause of hearing problems in the middle ear. Choices C and D are likely irrelevant or incomplete options, as they do not provide a logical connection to middle ear problems affecting hearing.

Correct Answer: A

Rationale: The correct answer is A: Disease. An alteration in body function refers to a disruption in the normal physiological processes of the body, which is characteristic of a disease. Diseases can manifest as changes in organ function, biochemical pathways, or cellular processes. Illness, on the other hand, is a subjective feeling of being unwell and does not necessarily imply an underlying physiological dysfunction. Choice C and D are incomplete and do not provide a relevant response to the question.

Correct Answer: A

Rationale: The correct answer is A: Autoclave. An autoclave is the most effective method for sterilizing equipment in a community setting due to its ability to reach high temperatures and pressure to kill all microorganisms. Handwashing (B) is important for reducing the spread of germs but does not achieve sterilization. Boiling water (C) can kill some bacteria and viruses but may not be sufficient for sterilization. Choice D is not provided, so it is not a valid option. Autoclaving ensures complete sterilization, making it the best choice for community sterilization needs.