Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
A nurse is caring for an older adult client in the emergency department who sustained a head injury due to a fall. Which of the following are common reasons for head injuries in older adults?
(Select All that Apply.)
A. Decreased visual acuity
Decreased visual acuity is correct. Yes, decreased visual acuity, including issues such as poor depth perception, reduced peripheral vision, and difficulty with contrast sensitivity, can contribute to falls and head injuries in older adults.
B. Motor vehicle crashes
Motor vehicle crashes is incorrect. While motor vehicle crashes can cause head injuries in individuals of all ages, they are less common among older adults compared to younger age groups.
C. Polypharmacy
Polypharmacy is correct. Yes, polypharmacy, which refers to the use of multiple medications concurrently, is a common risk factor for falls and head injuries in older adults. Certain medications, especially those with sedative or psychotropic effects, can increase the risk of falls and accidents.
D. Weakness
Weakness is correct. Yes, weakness, frailty, and decreased muscle strength are common age-related changes that can increase the risk of falls and subsequent head injuries in older adults.
E. Chronic hypertension
Chronic hypertension, particularly when poorly controlled, can contribute to an increased risk of falls in older adults through various mechanisms:Hypertension medications or the condition itself can lead to orthostatic hypotension. This can cause dizziness or lightheadedness, increasing the risk of falls.Chronic hypertension is a major risk factor for cerebrovascular disease, including strokes. These events can lead to neurological deficits such as weakness, numbness, or impaired balance, predisposing individuals to falls.
F. Previous military experience
Previous military experience is incorrect. While previous military experience may contribute to certain health conditions or injuries in older adults, it is not a common reason for head injuries specifically related to falls or accidents in this population.
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Full Explanation
Choice A Reason:
Decreased visual acuity is correct. Yes, decreased visual acuity, including issues such as poor depth perception, reduced peripheral vision, and difficulty with contrast sensitivity, can contribute to falls and head injuries in older adults.
Choice B Reason:
Motor vehicle crashes is incorrect. While motor vehicle crashes can cause head injuries in individuals of all ages, they are less common among older adults compared to younger age groups.
Choice C Reason:
Polypharmacy is correct. Yes, polypharmacy, which refers to the use of multiple medications concurrently, is a common risk factor for falls and head injuries in older adults. Certain medications, especially those with sedative or psychotropic effects, can increase the risk of falls and accidents.
Choice D Reason:
Weakness is correct. Yes, weakness, frailty, and decreased muscle strength are common age-related changes that can increase the risk of falls and subsequent head injuries in older adults.
Choice E Reason:
Chronic hypertension, particularly when poorly controlled, can contribute to an increased risk of falls in older adults through various mechanisms:Hypertension medications or the condition itself can lead to orthostatic hypotension. This can cause dizziness or lightheadedness, increasing the risk of falls. Chronic hypertension is a major risk factor for cerebrovascular disease, including strokes. These events can lead to neurological deficits such as weakness, numbness, or impaired balance, predisposing individuals to falls.
Choice F Reason:
Previous military experience is incorrect. While previous military experience may contribute to certain health conditions or injuries in older adults, it is not a common reason for head injuries specifically related to falls or accidents in this population.
Similar Questions
A nurse is caring for a group of clients in a medical unit. Which of the following clients is at the highest risk for developing osmotic cerebral edema?
A. A client with a decreased potassium level
A client with a decreased potassium level is incorrect. Hypokalemia (decreased potassium level) can cause various neurological symptoms, but it doesn't directly lead to osmotic cerebral edema.
B. A client with a decreased serum glucose
When plasma glucose levels are rapidly lowered, an osmotic gradient develops between the brain and plasma, which can lead to cerebral edema. Brain cells pull water from the plasma, resulting in widespread edema.
C. A client with an increased hemoglobin A1C
While it is an important marker of diabetes control and may indicate poor long-term management, it does not directly relate to the acute metabolic derangements (e.g., rapid osmotic shifts, severity of acidosis) that predispose to cerebral edema in DKA.
D. A client with an increased creatinine level
A client with an increased creatinine level is incorrect. Elevated creatinine levels typically indicate kidney dysfunction or dehydration, but they don't directly cause osmotic cerebral edema.
E. None
None
F. None
None
Full Explanation
Choice A Reason:
A client with a decreased potassium level is incorrect. Hypokalemia (decreased potassium level) can cause various neurological symptoms, but it doesn't directly lead to osmotic cerebral edema.
Choice B Reason:
When plasma glucose levels are rapidly lowered, an osmotic gradient develops between the brain and plasma, which can lead to cerebral edema. Brain cells pull water from the plasma, resulting in widespread edema.
Choice C Reason:
While HbA1c is an important marker of diabetes control and may indicate poor long-term management, it does not directly relate to the acute metabolic derangements (e.g., rapid osmotic shifts, severity of acidosis) that predispose to cerebral edema in DKA.
Choice D Reason:
A client with an increased creatinine level is incorrect. Elevated creatinine levels typically indicate kidney dysfunction or dehydration, but they don't directly cause osmotic cerebral edema.
A nurse is assessing a client who has acute respiratory distress syndrome (ARDS). Which of the following findings should the nurse expect?
A. Hypoxemia due to dead space
Hypoxemia due to dead space is not appropriate. Dead space refers to areas of the lung where ventilation occurs but no perfusion takes place. In ARDS, hypoxemia typically occurs due to ventilation-perfusion (V/Q) mismatch and shunting rather than dead space.
B. Impaired carbon dioxide elimination due to shunting
Impaired carbon dioxide elimination due to shunting is not appropriate. Shunting occurs when blood bypasses ventilated alveoli, leading to inadequate gas exchange. In ARDS, shunting contributes to hypoxemia, but it doesn't directly impair carbon dioxide elimination.
C. Decreased pulmonary arterial pressure due to ventilation-perfusion (V/Q) mismatch
Decreased pulmonary arterial pressure due to ventilation-perfusion (V/Q) mismatch is incorrect. V/Q mismatch occurs when ventilation and perfusion are mismatched in different areas of the lung. This leads to areas of low ventilation (dead space) and areas of low perfusion (shunting). V/Q mismatch contributes to hypoxemia in ARDS but does not typically lead to decreased pulmonary arterial pressure.
D. Decreased pulmonary compliance due to stiffness
Decreased pulmonary compliance due to stiffness is correct. This is a characteristic feature of ARDS. The inflammation and damage to the alveoli cause them to become stiff, reducing pulmonary compliance and impairing lung expansion during ventilation.
Full Explanation
Choice A Reason:
Hypoxemia due to dead space is not appropriate. Dead space refers to areas of the lung where ventilation occurs but no perfusion takes place. In ARDS, hypoxemia typically occurs due to ventilation-perfusion (V/Q) mismatch and shunting rather than dead space.
Choice B Reason:
Impaired carbon dioxide elimination due to shunting is not appropriate. Shunting occurs when blood bypasses ventilated alveoli, leading to inadequate gas exchange. In ARDS, shunting contributes to hypoxemia, but it doesn't directly impair carbon dioxide elimination.
Choice C Reason:
Decreased pulmonary arterial pressure due to ventilation-perfusion (V/Q) mismatch is incorrect. V/Q mismatch occurs when ventilation and perfusion are mismatched in different areas of the lung. This leads to areas of low ventilation (dead space) and areas of low perfusion (shunting). V/Q mismatch contributes to hypoxemia in ARDS but does not typically lead to decreased pulmonary arterial pressure.
Choice D Reason:
Decreased pulmonary compliance due to stiffness is correct. This is a characteristic feature of ARDS. The inflammation and damage to the alveoli cause them to become stiff, reducing pulmonary compliance and impairing lung expansion during ventilation.
A nurse is caring for a client who is being evaluated for multiple sclerosis. Which of the following tests should the nurse anticipate the provider will order to assist with diagnosis?
A. Myelogram
Myelogram is not appropriate. This imaging test involves injecting contrast dye into the spinal canal to visualize the spinal cord and nerve roots. While it may help identify certain spinal cord abnormalities, it is not typically used as a primary diagnostic tool for multiple sclerosis.
B. Brain natriuretic peptide
Brain natriuretic peptide (BNP) is not appropriate. This blood test measures the level of BNP, a hormone produced by the heart, which can be elevated in conditions such as heart failure. It is not used in the diagnosis of multiple sclerosis.
C. Troponin level
Troponin level is not appropriate. Troponin is a protein released into the bloodstream during a heart attack or other heart-related conditions. This test is used to diagnose heart muscle damage and is not relevant to the diagnosis of multiple sclerosis.
D. Lumbar puncture
Lumbar puncture is appropriate. Also known as a spinal tap, a lumbar puncture involves collecting cerebrospinal fluid (CSF) from the spinal canal for analysis. In the diagnosis of multiple sclerosis, analysis of CSF can help identify certain abnormalities, such as an elevated level of immunoglobulin G (IgG) or the presence of oligoclonal bands, which are often indicative of inflammation in the central nervous system. Therefore, a lumbar puncture is commonly ordered to assist with the diagnosis of multiple sclerosis.
Full Explanation
Choice A Reason:
Myelogram is not appropriate. This imaging test involves injecting contrast dye into the spinal canal to visualize the spinal cord and nerve roots. While it may help identify certain spinal cord abnormalities, it is not typically used as a primary diagnostic tool for multiple sclerosis.
Choice B Reason:
Brain natriuretic peptide (BNP) is not appropriate. This blood test measures the level of BNP, a hormone produced by the heart, which can be elevated in conditions such as heart failure. It is not used in the diagnosis of multiple sclerosis.
Choice C Reason:
Troponin level is not appropriate. Troponin is a protein released into the bloodstream during a heart attack or other heart-related conditions. This test is used to diagnose heart muscle damage and is not relevant to the diagnosis of multiple sclerosis.
Choice D Reason:
Lumbar puncture is appropriate. Also known as a spinal tap, a lumbar puncture involves collecting cerebrospinal fluid (CSF) from the spinal canal for analysis. In the diagnosis of multiple sclerosis, analysis of CSF can help identify certain abnormalities, such as an elevated level of immunoglobulin G (IgG) or the presence of oligoclonal bands, which are often indicative of inflammation in the central nervous system. Therefore, a lumbar puncture is commonly ordered to assist with the diagnosis of multiple sclerosis.