Before helping a resident into a shower the nursing assistant should

Correct Answer: A

Rationale: The correct answer is A: Test the water temperature. This is important to prevent burns or discomfort for the resident. Testing the water temperature ensures it is safe and comfortable for the resident. Soaking the resident's fingertips (B) or massaging the resident's head (C) are not necessary steps for preparing a resident for a shower. Exfoliating the resident's skin with a brush (D) should only be done if it is part of the resident's care plan and not as a general step before a shower.

Correct Answer: D

Rationale: The correct answer is D: To treat constipation. Rectal suppositories are commonly used to provide direct medication to the rectum to stimulate a bowel movement in cases of constipation. The suppository dissolves and lubricates the rectum, softening the stool and making it easier to pass. It is not used to reduce fecal incontinence (A), eliminate bouts of diarrhea (B), or induce a bowel movement in general (C). These options do not align with the specific purpose of rectal suppositories in treating constipation.

Correct Answer: D

Rationale: The correct answer is D: Trichomoniasis. Trichomoniasis is caused by a protozoan parasite called Trichomonas vaginalis. This infection is transmitted through sexual contact. The other choices (A, B, C) are incorrect because HPV infection (A) is caused by a virus, genital herpes (B) is caused by the herpes simplex virus, and syphilis (C) is caused by the bacterium Treponema pallidum. Trichomoniasis is the only option caused by a protozoa, making it the correct answer in this context.

Correct Answer: D

Rationale: The correct answer is D: Systole. During systole, the ventricles of the heart contract to pump blood out into the circulation. This phase is essential for maintaining blood flow and delivering oxygen and nutrients to the body. A: Flatlining is incorrect as it refers to a complete absence of heart activity, which is a medical emergency. B: Diastole is incorrect as it is the phase when the heart muscle relaxes and fills with blood. C: Homeostasis is incorrect as it refers to the body's ability to maintain internal balance, not a specific phase of heart function.

Correct Answer: C

Rationale: The correct answer is C: Oxygen in the blood decreases. As people age, lung function declines, leading to reduced oxygen intake and exchange in the bloodstream. This is a normal age-related change due to decreased lung elasticity and efficiency. Choice A is incorrect as air sacs typically decrease in number and size with age. Choice B is incorrect because chest muscles tend to weaken, not strengthen, as individuals age. Choice D is also incorrect since lung capacity tends to decrease with age due to changes in lung tissue and decreased respiratory muscle strength.