A causative agent is

Correct Answer: B

Rationale: The correct answer is B: A pathogen or microorganism that causes disease. This is because a causative agent is specifically defined as a factor, such as a microorganism or pathogen, that can directly lead to the development of a disease. Choices A, C, and D are incorrect because they do not fully capture the essence of a causative agent. Choice A is too broad, choice C refers to normal flora which are not necessarily causative agents, and choice D describes the incubation period of an infection rather than the actual agent causing the disease.

Correct Answer: B

Rationale: The correct answer is B because having the resident lean forward and place her head between her knees can help increase blood flow to the brain, potentially preventing fainting. This position helps improve circulation and oxygenation to the brain, reducing the risk of fainting. A: Trying to have the resident stand up before fainting occurs may lead to a fall and injury. C: Tightening the resident's clothing restricts blood flow and does not address the underlying cause of fainting. D: Leaving the resident alone as soon as symptoms disappear is unsafe as the cause of fainting should be addressed and monitored.

Correct Answer: C

Rationale: The correct answer is C: Lack of sleep can cause decreased mental function. This is true because sleep is essential for cognitive function and overall well-being. Lack of sleep can impair memory, concentration, decision-making, and mood. It can also lead to slower reaction times and decreased performance in various tasks. Choice A is incorrect because the elderly generally have more sleep disturbances and take longer to fall asleep. Choice B is incorrect as older adults are actually more sensitive to the effects of sleep deprivation. Choice D is incorrect because consistent lack of sleep can lead to various health issues and impact overall well-being.

Correct Answer: B

Rationale: The correct answer is B because when transferring a resident with a weak side, it is safer to have the stronger side move first to provide better support and stability. This helps prevent falls and injuries by ensuring the resident's weight is predominantly supported by the stronger side. Moving the weaker side first may increase the risk of imbalance and potential harm. Choice A is correct because it prioritizes safety and proper weight distribution. Choices C and D are incorrect as they do not address the importance of supporting the resident effectively during transfers, which is crucial for their well-being.

Correct Answer: A

Rationale: The correct answer is A because residents' hair should be handled gently to prevent hair loss. Pulling or tugging on the hair can cause damage to the hair follicles and lead to hair loss. It is important to be gentle when combing or brushing elderly residents' hair to maintain their hair health. Choice B is incorrect because hairstyles should be chosen based on residents' preferences and comfort, not based on aesthetic appeal. Choice C is incorrect because cutting residents' hair should be done by trained professionals unless the resident requests it specifically. Choice D is incorrect because pediculosis can spread quickly through close contact or shared personal items.