Nokea
In helping Mr. Hall to maintain proper body alignment in bed to prevent dislocation of the prosthetic head and hip contracture, the nurse should assist the patient to lie
- A. straight in bed alternating head position from flat to 30° elevation and left leg abducted
- B. diagonally toward the right side of the bed with legs together
- C. flat on back in bed for first 48 hours with legs adducted
- D. on the right side only with the left leg in front of the right leg
Correct Answer: A
Rationale: This position minimizes stress on the new hip joint.
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In counseling patients with spinal cord lesions regarding sexual function, how should the nurse advise a male patient with a complete lower motor neuron lesion?
- A. He is most likely to have reflexogenic erections and may experience orgasm if ejaculation occurs
- B. He may have uncontrolled reflex erections but orgasm and ejaculation are usually not possible
- C. He has a lesion with the greatest possibility of successful psychogenic erection with ejaculation and orgasm
- D. He will probably be unable to have either psychogenic or reflexogenic erections and no ejaculation or orgasm
Correct Answer: B
Rationale: Lower motor neuron lesions result in uncontrolled reflex erections.
Which functional cell of the nervous system is responsible for transmission of information from one cell to another?
- A. nerves
- B. neurons
- C. ganglions
- D. glial cells
Correct Answer: B
Rationale: Neurons are specialized cells that transmit electrical and chemical signals throughout the nervous system. They are the primary functional units of the nervous system, responsible for processing and transmitting information to other neurons, muscles, or glands.
Dopamine is an important neurotransmitter. Which disease or disorder results when the neurons in the brain that produce dopamine die?
- A. Multiple sclerosis
- B. Lou Gehrig disease (amyotrophic lateral sclerosis)
- C. Parkinson disease
- D. Seizure disorder
Correct Answer: C
Rationale: Parkinson disease is caused by the degeneration of dopamine-producing neurons in the brain, leading to motor symptoms such as tremors and rigidity. Multiple sclerosis and ALS involve different neurological mechanisms, while seizure disorders are related to abnormal electrical activity in the brain. Dopamine's role in motor control is critical to understanding Parkinson disease.
A client with a subdural hematoma becomes restless and confused, with dilation of the ipsilateral pupil. The physician orders mannitol for which of the following reasons?
- A. To reduce intraocular pressure
- B. To prevent acute tubular necrosis
- C. To promote osmotic diuresis to decrease ICP
- D. To draw water into the vascular system to increase blood pressure
Correct Answer: C
Rationale: Mannitol is an osmotic diuretic that draws fluid from the brain tissue into the vascular system, reducing intracranial pressure (ICP). This is critical in cases of subdural hematoma, where increased ICP can lead to brain herniation and further neurological damage. The drug works by creating an osmotic gradient, pulling water from the extracellular space of the brain into the bloodstream, which is then excreted by the kidneys. This mechanism helps alleviate symptoms like restlessness, confusion, and pupil dilation caused by increased ICP.
Regarding the cutaneous nerve supply to arm and forearm
- A. C3/4 supply pectoral and upper shoulder
- B. Branches of the brachial plexus supply arm and forearm
- C. C4/5/6/T1 supply the majority of the arm
- D. ?
Correct Answer: B
Rationale: The brachial plexus, formed from C5-T1, supplies the cutaneous innervation of the arm and forearm. Specific branches include the median, ulnar, and radial nerves.