A patient with asthma is prescribed a mast cell stabilizer for long term management. The nurse is teaching the patient about this medication. Which statement by the patient indicates a correct understanding of the expected pharmacological action of mast cell stabilizers?
Mast cell stabilizers work by preventing the release of histamine and other inflammatory mediators from mast cells, which reduces airway inflammation and bronchoconstriction.
Mast cell stabilizers function by directly blocking the effects of histamine already released from mast cells to alleviate symptoms
Mast cell stabilizers work by enhancing the degranulation process of mast cells, leading to increased histamine release and airway constriction.
Mast cell stabilizers work by promoting the degranulation of mast cells, facilitating the release of inflammatory mediators to improve airway function.
The Correct Answer is A
A. Mast cell stabilizers work by preventing the release of histamine and other inflammatory mediators from mast cells, which reduces airway inflammation and bronchoconstriction: This statement accurately describes the mechanism of action of mast cell stabilizers. By preventing degranulation, these medications help control chronic inflammation and reduce asthma symptoms over time.
B. Mast cell stabilizers function by directly blocking the effects of histamine already released from mast cells to alleviate symptoms: Mast cell stabilizers do not block histamine receptors or counteract histamine already released. Antihistamines perform that role, not mast cell stabilizers.
C. Mast cell stabilizers work by enhancing the degranulation process of mast cells, leading to increased histamine release and airway constriction: Enhancing degranulation would worsen asthma symptoms. Mast cell stabilizers aim to prevent, not promote, the release of inflammatory mediators.
D. Mast cell stabilizers work by promoting the degranulation of mast cells, facilitating the release of inflammatory mediators to improve airway function: Promoting degranulation is the opposite of the intended effect. Increasing mediator release would exacerbate inflammation and bronchoconstriction rather than improving airway function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Serum creatinine level:Vancomycin is nephrotoxic, especially with prolonged therapy or high serum levels. Monitoring serum creatinine evaluates kidney function and helps detect early signs of renal impairment. Renal monitoring is essential to ensure safe dosing and prevent toxicity.
B. Complete blood count:A complete blood count may be monitored for overall infection response, but it does not specifically assess vancomycin toxicity. CBC changes are not the primary safety concern associated with this medication.
C. Serum potassium level:Vancomycin does not typically cause significant potassium imbalances. Potassium monitoring is not routinely required unless the patient has other risk factors or is receiving additional nephrotoxic or potassium-altering medications.
D. Serum glucose level:Vancomycin does not directly affect blood glucose levels. Glucose monitoring would only be indicated if the patient has diabetes or another condition affecting glucose regulation.
Correct Answer is D
Explanation
A. The client is diaphoretic:Diaphoresis often indicates pain, stress, or sympathetic nervous system activation. Sweating after opioid administration may suggest inadequate pain relief or other complications, not pain reduction.
B. The client has an elevated blood pressure:Elevated blood pressure can result from pain, anxiety, or sympathetic stimulation. A rise in blood pressure after opioid administration may indicate ongoing pain rather than relief.
C. The client has an increased respiratory rate:Opioids typically cause respiratory depression. An increased respiratory rate may suggest pain, anxiety, or other physiologic stress rather than effective analgesia.
D. The client is asleep:Sleep or a relaxed state following opioid administration generally indicates adequate pain control. Opioids reduce pain perception and promote comfort, allowing the client to rest, which reflects effective analgesia.
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