Which of the following clients diagnosed with myasthenia gravis would the nurse identify as most at risk for developing a cholinergic crisis? A client who
reports taking an extra dose each day of their anticholinesterase medication.
is experiencing a respiratory infection and is short of breath.
has a family history of autoimmune disorders.
has a past medical history of type 2 diabetes mellitus.
The Correct Answer is A
A. "Reports taking an extra dose each day of their anticholinesterase medication."
This client is at highest risk for developing a cholinergic crisis. A cholinergic crisis occurs when there is overdose or excessive stimulation of acetylcholine receptors due to too much anticholinesterase medication. Symptoms include muscle weakness, respiratory distress, salivation, sweating, and bradycardia. Taking an extra dose of the medication can result in an overdose of acetylcholine, triggering these symptoms. Therefore, this client is at the greatest risk for a cholinergic crisis.
B. "Is experiencing a respiratory infection and is short of breath."
While respiratory infections can worsen symptoms of myasthenia gravis due to increased muscle weakness, this client is not directly at risk for a cholinergic crisis. Respiratory infections can increase the risk of myasthenic crisis, which is a different complication where muscle weakness worsens to the point of respiratory failure. A myasthenic crisis is caused by insufficient anticholinesterase medication or a disease exacerbation, not an overdose.
C. "Has a family history of autoimmune disorders."
A family history of autoimmune disorders may suggest a genetic predisposition to autoimmune diseases, but it does not increase the risk of a cholinergic crisis specifically. The risk of a cholinergic crisis is more directly related to medication management, not family history.
D. "Has a past medical history of type 2 diabetes mellitus."
Type 2 diabetes mellitus does not directly increase the risk of a cholinergic crisis. While diabetes may influence overall health and immune function, it does not have a direct impact on anticholinesterase therapy or the risk of cholinergic crisis in myasthenia gravis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Tizanidine is a sleep aid and used to promote sleep along with melatonin:
This is incorrect. Tizanidine is not classified as a sleep aid. While muscle relaxants like tizanidine may cause drowsiness as a side effect, its primary purpose is to reduce muscle spasms rather than to promote sleep. Using it in combination with melatonin for sleep would not be appropriate unless specifically prescribed by a healthcare provider.
B. Tizanidine is a muscle relaxant medication used to reduce muscle spasms:
Tizanidine is a centrally acting muscle relaxant that is commonly used to treat muscle spasms and spasticity. In clients with amyotrophic lateral sclerosis (ALS), spasticity can be a significant symptom, leading to muscle stiffness and discomfort. Tizanidine helps by relaxing the muscles and alleviating the muscle tightness associated with ALS. It works by inhibiting nerve impulses that cause muscles to contract, thus reducing spasticity and improving mobility. This medication is not intended for sleep promotion or pain relief directly, but rather to manage muscle spasms.
C. Tizanidine is an antibiotic medication used to treat bacterial infections:
This is incorrect. Tizanidine is not an antibiotic and has no role in treating bacterial infections. It is a muscle relaxant used for managing spasticity, not an antimicrobial drug.
D. Tizanidine is an opiate and is used to relieve severe pain:
This is incorrect. Tizanidine is not an opiate and does not belong to the class of opioids. It does not have the pain-relieving effects of opioid analgesics. While it may provide some relief from muscle discomfort, it is not used to treat severe pain in the way opiates like morphine or oxycodone are. Tizanidine’s primary purpose is to address muscle spasticity, not pain management.
Correct Answer is B
Explanation
Explanation of each option:
A. Respiratory rate of 10 breaths per minute:
A respiratory rate of 10 breaths per minute would be too slow in a patient with ARDS and hypoxemia. In response to hypoxemia, the body typically increases the respiratory rate to improve oxygenation. A respiratory rate of 10 breaths per minute would not be expected in this situation.
B. Respiratory rate of 32 breaths per minute: The arterial blood gas (ABG) results indicate respiratory alkalosis with hypoxemia, which is a common finding in patients with acute respiratory distress syndrome (ARDS). pH 7.59: This is alkalotic, meaning the body is experiencing respiratory alkalosis.
PaCO2 29 mmHg: The PaCO2 is low, indicating hyperventilation, which is a compensatory response to the alkalosis in an attempt to reduce carbon dioxide levels.
PaO2 55 mmHg: This is severely low, indicating hypoxemia (low oxygen levels in the blood), a hallmark of ARDS. HCO3 22 mEq/L: The bicarbonate is normal, suggesting that the metabolic component has not yet compensated for the respiratory alkalosis, or that it is in the early stages of compensation. Given these ABG results, the body is attempting to compensate for hypoxemia by increasing respiratory rate (tachypnea), which leads to hyperventilation and further reduction in PaCO2. Therefore, an expected assessment finding in this scenario would be a high respiratory rate (such as 32 breaths per minute), which is a compensatory response to hypoxemia.
C. Blood pressure 86/42 mmHg:
While hypotension can occur in severe cases of ARDS due to impaired oxygenation and circulation, it is not directly reflected by the ABG results provided. Hypoxemia and alkalosis would more likely lead to tachypnea and compensatory mechanisms like tachycardia, rather than significant hypotension unless there is another contributing factor, such as shock or sepsis. Therefore, hypotension is not the most expected finding based on these ABGs.
D. Heart rate of 45 beats per minute:
A heart rate of 45 beats per minute is bradycardic, which would be unusual in a patient with hypoxemia and respiratory alkalosis. Tachycardia is a more common compensatory response to hypoxia, as the heart works harder to improve oxygen delivery to tissues. A heart rate of 45 beats per minute would be more suggestive of a different underlying condition, such as vagal stimulation or cardiac conduction issues, but it is not the expected response in this case.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
