Nokea
What is the pathophysiology of systemic lupus erythematosus (SLE) characterized by?
- A. Destruction of nucleic acids and other self-proteins by autoantibodies
- B. Overproduction of collagen that disrupts the functioning of internal organs
- C. Formation of abnormal IgG that attaches to cellular antigens, activating complement
- D. Increased activity of T suppressor cells with B-cell hypoactivity, resulting in an immunodeficiency
Correct Answer: A
Rationale: Autoantibodies attack self-proteins in SLE.
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When positioning the patient after a total hip arthroplasty with a posterior approach, it is important that the nurse maintain the affected extremity in what position?
- A. Adduction and flexion
- B. Abduction and extension
- C. Abduction and internal rotation
- D. Adduction and external rotation
Correct Answer: B
Rationale: Abduction and extension prevent dislocation.
Which of the following nursing interventions is taken as a precautionary measure if shock develops when a client with spinal cord injury is hospitalized?
- A. An IV line is inserted to provide access to a vein.
- B. Head and back are immobilized mechanically with a cervical collar and back support.
- C. Traction with weights and pulleys is applied.
- D. A turning frame is used.
Correct Answer: A
Rationale: IV access is critical for administering fluids and medications in shock.
Which finding may suggest a problem with the patient's proprioception?
- A. Difficulty standing with eyes closed or swaying when standing still.
- B. Steady gait and normal balance.
- C. Clear, intact sensation in all extremities.
- D. Normal muscle strength and coordination.
Correct Answer: A
Rationale: Proprioception issues are indicated by difficulty standing with eyes closed or swaying. Steady gait, intact sensation, and normal strength are normal findings.
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.
Which motor symptom, visible in the hands, is characteristic of Parkinson's disease?
- A. blue discoloration
- B. red discoloration
- C. tremor
- D. severe edema
Correct Answer: C
Rationale: Tremor, particularly a resting tremor, is a hallmark symptom of Parkinson's disease. It often begins in the hands and can progress to other parts of the body as the disease advances.