Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
Which statement about monoamine oxidase inhibitors is inaccurate?
A. The client should be careful with their diet since some foods cause adverse reactions
Monoamine oxidase inhibitors (MAOIs) require dietary restrictions to avoid tyramine-rich foods (e.g., aged cheese), which can cause hypertensive crisis by increasing norepinephrine release. MAOIs inhibit monoamine breakdown, amplifying tyramine’s effects. This statement is accurate, as dietary caution is critical to prevent serious adverse reactions.
B. Clients experience immediate improvement in symptoms
MAOIs, like phenelzine, take 2-6 weeks to improve depressive symptoms by increasing monoamine levels (serotonin, norepinephrine, dopamine). Immediate improvement does not occur due to gradual synaptic changes. This statement is inaccurate, as the delayed onset is a key characteristic of MAOIs, similar to other antidepressants.
C. These drugs are used when newer drugs have not been effective
MAOIs are reserved for treatment-resistant depression when newer drugs like SSRIs fail, due to their side effect profile and dietary restrictions. They effectively increase monoamine availability but are less preferred due to safety concerns. This statement is accurate, reflecting their role in refractory cases.
D. There are some drug-to-drug interactions that can contribute to hypertensive crisis
MAOIs can cause hypertensive crisis via drug interactions (e.g., with SSRIs or sympathomimetics), as they inhibit monoamine breakdown, leading to excessive norepinephrine. This can result in severe blood pressure elevation. This statement is accurate, as drug interactions are a significant risk with MAOI therapy.
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Full Explanation
Choice A reason: Monoamine oxidase inhibitors (MAOIs) require dietary restrictions to avoid tyramine-rich foods (e.g., aged cheese), which can cause hypertensive crisis by increasing norepinephrine release. MAOIs inhibit monoamine breakdown, amplifying tyramine’s effects. This statement is accurate, as dietary caution is critical to prevent serious adverse reactions.
Choice B reason: MAOIs, like phenelzine, take 2-6 weeks to improve depressive symptoms by increasing monoamine levels (serotonin, norepinephrine, dopamine). Immediate improvement does not occur due to gradual synaptic changes. This statement is inaccurate, as the delayed onset is a key characteristic of MAOIs, similar to other antidepressants.
Choice C reason: MAOIs are reserved for treatment-resistant depression when newer drugs like SSRIs fail, due to their side effect profile and dietary restrictions. They effectively increase monoamine availability but are less preferred due to safety concerns. This statement is accurate, reflecting their role in refractory cases.
Choice D reason: MAOIs can cause hypertensive crisis via drug interactions (e.g., with SSRIs or sympathomimetics), as they inhibit monoamine breakdown, leading to excessive norepinephrine. This can result in severe blood pressure elevation. This statement is accurate, as drug interactions are a significant risk with MAOI therapy.
Similar Questions
A client who was placed on a medication for depression 7 days ago is concerned that he is not experiencing any change in his symptoms. What is the best response by the nurse?
A. This is normal because it typically takes 3-6 weeks for medications for depression to reach full therapeutic effect
Antidepressants, like SSRIs or tricyclics, require 3-6 weeks to achieve full therapeutic effect due to gradual neuroplastic changes, including upregulation of serotonin or norepinephrine receptors. Initial synaptic monoamine increases take time to translate into mood improvement, making this statement accurate and reassuring for the patient.
B. Your symptoms should have improved by now. You need to schedule a follow-up appointment with your provider
Expecting symptom improvement within 7 days is unrealistic, as antidepressants require weeks to alter brain chemistry effectively. Suggesting immediate follow-up implies treatment failure prematurely, which is inaccurate. Monitoring is needed, but this statement misrepresents the typical timeline for antidepressant efficacy.
C. Clients who do not have symptom relief in 5-7 days usually need to be placed on a different medication
Lack of symptom relief in 5-7 days does not necessitate switching medications, as antidepressants typically take 3-6 weeks for effect. Early non-response does not indicate failure, as synaptic and receptor adaptations are gradual. This statement is inaccurate and may lead to unnecessary medication changes.
D. It is normal for clients to have incomplete symptom relief, but any symptoms that remain after 7 days will be permanent
Incomplete symptom relief at 7 days is normal, but stating remaining symptoms are permanent is inaccurate. Antidepressants often achieve partial or full response by 6-8 weeks, and adjustments can optimize outcomes. This statement is misleading, as it falsely suggests persistent symptoms are unchangeable.
Full Explanation
Choice A reason: Antidepressants, like SSRIs or tricyclics, require 3-6 weeks to achieve full therapeutic effect due to gradual neuroplastic changes, including upregulation of serotonin or norepinephrine receptors. Initial synaptic monoamine increases take time to translate into mood improvement, making this statement accurate and reassuring for the patient.
Choice B reason: Expecting symptom improvement within 7 days is unrealistic, as antidepressants require weeks to alter brain chemistry effectively. Suggesting immediate follow-up implies treatment failure prematurely, which is inaccurate. Monitoring is needed, but this statement misrepresents the typical timeline for antidepressant efficacy.
Choice C reason: Lack of symptom relief in 5-7 days does not necessitate switching medications, as antidepressants typically take 3-6 weeks for effect. Early non-response does not indicate failure, as synaptic and receptor adaptations are gradual. This statement is inaccurate and may lead to unnecessary medication changes.
Choice D reason: Incomplete symptom relief at 7 days is normal, but stating remaining symptoms are permanent is inaccurate. Antidepressants often achieve partial or full response by 6-8 weeks, and adjustments can optimize outcomes. This statement is misleading, as it falsely suggests persistent symptoms are unchangeable.
A client with a history of hypertension has a urine analysis ordered. Which finding would warrant additional assessment?
A. Negative for glucose
Negative glucose in urine is normal, as the kidneys reabsorb glucose unless blood levels exceed 180 mg/dL (e.g., in diabetes). In hypertension, this finding does not indicate renal damage or require further assessment, as it aligns with normal renal function and glucose handling.
B. Negative for white blood cells
Negative white blood cells in urine suggest no urinary tract infection or inflammation, a normal finding. In hypertensive patients, this does not signal kidney damage or other complications, so no additional assessment is needed, as it indicates an absence of acute inflammatory processes.
C. Positive for protein
Proteinuria (positive protein) indicates potential renal damage, common in hypertension due to glomerular injury from elevated pressure. It suggests impaired filtration, allowing proteins like albumin to leak into urine. This finding warrants further assessment, such as quantifying protein levels or evaluating kidney function, making it the correct choice.
D. Positive for creatinine
Creatinine in urine is normal, as it is a waste product excreted by the kidneys. While serum creatinine assesses renal function, urinary creatinine presence is expected and does not indicate pathology in hypertension, so it does not require additional assessment in this context.
Full Explanation
Choice A reason: Negative glucose in urine is normal, as the kidneys reabsorb glucose unless blood levels exceed 180 mg/dL (e.g., in diabetes). In hypertension, this finding does not indicate renal damage or require further assessment, as it aligns with normal renal function and glucose handling.
Choice B reason: Negative white blood cells in urine suggest no urinary tract infection or inflammation, a normal finding. In hypertensive patients, this does not signal kidney damage or other complications, so no additional assessment is needed, as it indicates an absence of acute inflammatory processes.
Choice C reason: Proteinuria (positive protein) indicates potential renal damage, common in hypertension due to glomerular injury from elevated pressure. It suggests impaired filtration, allowing proteins like albumin to leak into urine. This finding warrants further assessment, such as quantifying protein levels or evaluating kidney function, making it the correct choice.
Choice D reason: Creatinine in urine is normal, as it is a waste product excreted by the kidneys. While serum creatinine assesses renal function, urinary creatinine presence is expected and does not indicate pathology in hypertension, so it does not require additional assessment in this context.
A nurse is caring for a client who sustained significant crush injuries and is being treated for acute renal injury. What is the pathophysiology behind the development of this renal injury?
A. High levels of myoglobin obstructed the tubules and caused intra-renal damage
Crush injuries release myoglobin from damaged muscles, causing rhabdomyolysis. Myoglobin precipitates in renal tubules, obstructing them and leading to acute tubular necrosis, an intra-renal acute kidney injury. This toxic effect, combined with oxidative stress, impairs filtration, making this statement accurate for the pathophysiology of renal injury.
B. Large amounts of IV fluids overloaded the kidneys and caused pre-renal damage
Large IV fluid volumes are used to prevent renal injury in rhabdomyolysis by diluting myoglobin and maintaining perfusion. Fluid overload may cause pulmonary edema but does not typically cause pre-renal damage, which results from hypoperfusion. This statement is inaccurate, as fluids are protective, not harmful.
C. Pain medications for the injuries were nephrotoxic and caused pre-renal damage
Pain medications like NSAIDs can be nephrotoxic, causing intra-renal damage by reducing renal blood flow or causing interstitial nephritis. However, pre-renal damage results from hypoperfusion, not direct toxicity. In crush injuries, myoglobin is the primary cause, making this statement less accurate than myoglobin-related tubular damage.
D. Significant blood loss impaired renal perfusion and caused post-renal damage
Significant blood loss causes pre-renal injury by reducing renal perfusion, not post-renal damage, which involves urinary obstruction. Crush injuries primarily cause intra-renal damage via myoglobin. This statement is inaccurate, as it misattributes the mechanism and type of renal injury in this context.
Full Explanation
Choice A reason: Crush injuries release myoglobin from damaged muscles, causing rhabdomyolysis. Myoglobin precipitates in renal tubules, obstructing them and leading to acute tubular necrosis, an intra-renal acute kidney injury. This toxic effect, combined with oxidative stress, impairs filtration, making this statement accurate for the pathophysiology of renal injury.
Choice B reason: Large IV fluid volumes are used to prevent renal injury in rhabdomyolysis by diluting myoglobin and maintaining perfusion. Fluid overload may cause pulmonary edema but does not typically cause pre-renal damage, which results from hypoperfusion. This statement is inaccurate, as fluids are protective, not harmful.
Choice C reason: Pain medications like NSAIDs can be nephrotoxic, causing intra-renal damage by reducing renal blood flow or causing interstitial nephritis. However, pre-renal damage results from hypoperfusion, not direct toxicity. In crush injuries, myoglobin is the primary cause, making this statement less accurate than myoglobin-related tubular damage.
Choice D reason: Significant blood loss causes pre-renal injury by reducing renal perfusion, not post-renal damage, which involves urinary obstruction. Crush injuries primarily cause intra-renal damage via myoglobin. This statement is inaccurate, as it misattributes the mechanism and type of renal injury in this context.