Core temperature, wrong

Correct Answer: A

Rationale: The correct answer is A: At the extremities. Core temperature refers to the internal temperature of the body, which is regulated by the hypothalamus in the brain. Temperature readings at the extremities, such as the hands and feet, are usually lower than core body temperature. This is because blood flow is more restricted in these areas compared to the core, where vital organs are located. Therefore, measuring temperature at the extremities is not an accurate reflection of core body temperature. Choices B, C, and D are incorrect because core temperature is not typically measured at the abdomen or any other body part, but rather at central locations like the mouth, ear, or rectum for accurate readings.

Correct Answer: B

Rationale: The Shellen chart is used to measure visual acuity. The notation "20/200" means that at 20 feet, the patient can see what a normal person can see at 200 feet. Therefore, choice B is correct because 200 represents the distance at which a normal person can read the same line of letters on the chart as the patient can at 20 feet. Choices A, C, and D are incorrect as they do not accurately interpret the notation or the purpose of the Shellen chart.

Correct Answer: A

Rationale: The correct answer is A: Urinate after intercourse. This helps to flush out bacteria that may have entered the urethra during intercourse, reducing the risk of urinary tract infection. Drinking water (choice B) is important for overall urinary health but alone may not prevent UTIs. Choices C and D are incomplete and irrelevant for preventing UTIs.

Correct Answer: B

Rationale: The correct answer is B: Rectal temperature on an infant. This method provides the most accurate measurement as it reflects the core body temperature. Infants are more prone to temperature fluctuations, making rectal temperature the most reliable. Oral temperature may not be accurate due to infants' inability to keep the thermometer in their mouth. Axillary temperature (option C) is less accurate than rectal temperature. Tympanic temperature (option D) can also be influenced by factors like earwax and positioning, making it less reliable for infants.

Correct Answer: A

Rationale: An environment where providers are 'tuned in' enables staff to notice subtle changes in residents' conditions through familiarity and attentiveness, improving safety.