_________ is a parasomnia that consists of talking and violent movements and may be related to nervous system disorders such as Parkinson's disease.

Correct Answer: D

Rationale: The correct answer is D: REM behavior disorder. This disorder is characterized by talking and violent movements during REM sleep. It is often associated with neurodegenerative disorders like Parkinson's disease. Somnambulism (A) is sleepwalking, not typically involving violent movements. Narcolepsy (B) is a sleep disorder characterized by excessive daytime sleepiness, not violent movements. Restless leg syndrome (C) causes discomfort in the legs, not violent movements during sleep. Therefore, D is the correct answer based on the symptoms described.

Correct Answer: D

Rationale: Step-by-step rationale for why choice D (Dizziness) is correct: 1. Dehydration leads to reduced blood volume, causing decreased blood flow to the brain. 2. This reduced blood flow can result in dizziness, lightheadedness, and even fainting. 3. Dizziness is a common symptom of dehydration due to impaired brain function. Summary of why other choices are incorrect: A: Moist mucous membranes - Dehydration leads to dry mucous membranes, not moist. B: An increase in urinary output - Dehydration typically causes a decrease in urine output. C: Slowed heartbeat - Dehydration usually leads to an increased heart rate to compensate for reduced blood volume, not a slowed heartbeat.

Correct Answer: D

Rationale: The correct answer is D: Abdominal cramps and vomiting. Fecal impaction can cause abdominal cramps due to the blockage of the colon. Vomiting can occur as a result of the pressure and discomfort caused by the impaction. Urgency and black stools (A) are more indicative of lower gastrointestinal issues like bleeding or inflammation. Urination and flatus (B) are not typical signs of fecal impaction. Bleeding and itching (C) are more commonly associated with hemorrhoids or anal fissures, not fecal impaction.

Correct Answer: C

Rationale: The correct answer is C: Small painless sores. Syphilis typically presents with painless sores called chancres at the site of infection. These sores are usually firm, round, and often go unnoticed. Other choices like A (Green-yellow discharge) and B (Yellow or white discharge) are more indicative of other sexually transmitted infections like gonorrhea or trichomoniasis. Choice D (Warts on the genitals) is a symptom of genital warts caused by the human papillomavirus (HPV), not syphilis.

Correct Answer: D

Rationale: The correct answer is D: Sequential compression stocking. This device helps reduce fluid buildup and improve circulation by applying sequential pressure to the legs, aiding in venous return. This promotes blood flow and prevents blood clots. A: Antiembolic plastic sleeve does not provide sequential compression, which is essential for improving circulation. B: Continuous bladder irrigation is used for clearing the bladder of clots or debris, not for reducing fluid buildup in the legs. C: Catheter irrigation is used to clear blockages in catheters, not for improving circulation in the legs. Therefore, the correct choice is D as it is specifically designed to address the issue of fluid buildup and circulation in the legs.