A patient is being taught the action of digoxin, which is an inotropic agent. The nurse defines an inotropic agent as a medication that has which of the following actions?

Correct Answer: D

Rationale: An inotropic agent, such as digoxin, is a medication that strengthens the contraction of the heart muscle. It works by increasing the force of each heartbeat, helping the heart pump more efficiently. This can be beneficial in conditions such as heart failure or certain types of arrhythmias where the heart's pumping ability is compromised. Inotropic agents do not decrease heart rate, increase conduction time, or increase heart rate; their primary action is to enhance the heart's contractility.

Correct Answer: B

Rationale: For an agitated head-injured patient, the most therapeutic setting would be a semiprivate room with one or two consistent caregivers. Consistency and familiarity can help reduce agitation and promote a sense of security for the patient. A quieter environment with fewer stimuli can also help in managing agitation and promoting a sense of calmness. By having consistent caregivers, the patient can build trust and feel more comfortable, which can contribute to their overall well-being and recovery. It is essential to minimize external factors that could contribute to further agitation, making a semiprivate room with consistent caregivers the most optimal setting for an agitated head-injured patient.

Correct Answer: C

Rationale: High fluid intake is the dietary intervention that prevents the precipitation of calcium renal stones. By increasing fluid intake, particularly water, the urine gets diluted, thus reducing the concentration of substances that can lead to the formation of kidney stones, including calcium. Drinking enough water can also help to flush out any potential stone-forming minerals or substances before they have a chance to crystallize and form stones in the kidney. It is recommended to have an adequate fluid intake of around 2 to 3 liters per day to reduce the risk of calcium stone formation in the kidneys. High fiber diet, increased protein intake, and intake of zinc do not directly prevent the precipitation of calcium renal stones as effectively as maintaining high fluid intake.

Correct Answer: B

Rationale: The nurse can examine the client for stiffness and rigidity of the neck by moving the head and chin of the client toward the chest. This maneuver, known as neck flexion, assesses the resistance and presence of stiffness in the neck muscles. Stiffness and rigidity of the neck muscles may suggest conditions such as meningitis, cervical dystonia, or other neurologic disorders. It is important for the nurse to perform this examination maneuver carefully to avoid causing discomfort or injury to the client.

Correct Answer: B

Rationale: Using pressure relieving devices when the client is in bed is essential to prevent skin breakdown. Clients with neuromuscular disorders are at higher risk for impaired skin integrity due to limited mobility and sensation. Pressure relieving devices such as specialized mattresses, cushions, or pads help distribute pressure evenly and reduce the risk of pressure ulcers. Maintaining good skin integrity is crucial in preventing complications and promoting the overall well-being of the client. It is important for the nurse to assess the client's risk factors, implement preventive measures like using pressure relieving devices, and monitor the client's skin regularly to prevent skin breakdown.