Correct Answer: D

Rationale: The correct answer is D. The nurse should instruct the client to avoid corticosteroids and vitamin C prior to testing to prevent false-positive results. Choice A is incorrect because stool samples from bowel movements, not from digital rectal examinations, are used for FOBT. Choice B is incorrect because a stimulant laxative is not typically prescribed before FOBT; rather, the client is instructed to follow specific dietary restrictions. Choice C is incorrect because biennial fecal occult blood testing for colorectal cancer screening usually begins at 50 years old, not 40.

Correct Answer: C

Rationale: The client presents with bradycardia, diaphoresis, and chest pain, indicating reduced cardiac output. Atropine is the appropriate choice as it increases heart rate by blocking the parasympathetic nervous system. Lidocaine is used for ventricular arrhythmias, Adenosine for supraventricular tachycardia, and Verapamil for controlling heart rate in atrial fibrillation or atrial flutter. These medications are not suitable for the client's current presentation.

Correct Answer: A

Rationale: The correct answer is A, Propofol. Propofol is a short-acting anesthetic medication commonly used to induce moderate sedation for procedures like a colonoscopy. This medication provides rapid onset and recovery, making it an ideal choice for such procedures. Choice B, Pancuronium, is a neuromuscular blocking agent used for muscle relaxation during surgery and would not be appropriate for sedation during a colonoscopy. Choice C, Promethazine, is an antihistamine used for nausea and motion sickness, not for anesthesia. Choice D, Pentoxifylline, is a medication used to improve blood flow in patients with circulation problems and is not indicated for anesthesia during a colonoscopy.

Correct Answer: C

Rationale: The correct information that the nurse should include in the teaching about a CPAP device is that it delivers a preset amount of airway pressure throughout the breathing cycle. This consistent positive airway pressure helps keep the airway open during both inspiration and expiration. Choice A is incorrect as CPAP does not deliver pressure only at the beginning of each breath. Choice B is incorrect because CPAP provides a constant level of pressure without continuous adjustments throughout the cycle. Choice D is incorrect as CPAP does not provide positive pressure at the end of each breath; instead, it maintains a continuous positive pressure.

Correct Answer: D

Rationale: The correct answer is D. Limiting activities that require bending at the waist can help prevent episodes of reflux in clients with GERD. Choices A, B, and C are incorrect. Taking medicine with orange juice may not be appropriate as citrus juices can aggravate GERD. Having a bedtime snack can exacerbate heartburn by increasing stomach acid production, and lying down after meals can worsen symptoms of GERD by allowing stomach acid to flow back into the esophagus.