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NurseDive Free Nursing Practice Question
A nurse is caring for a client who has a subarachnoid hemorrhage and asks why they are having a CT angiography. Which of the following should the nurse understand about CT angiography?
A. A CT angiogram will reveal any edema within the brain tissue.
A CT angiogram will reveal any edema within the brain tissue: CT angiography primarily focuses on visualizing blood vessels and blood flow within the brain. While it may incidentally detect areas of edema, its primary purpose is to assess vascular structures rather than brain tissue changes such as edema.
B. A CT angiogram will reveal any overproduction of cerebrospinal fluid (CSF).
A CT angiogram will reveal any overproduction of cerebrospinal fluid (CSF): CT angiography does not assess cerebrospinal fluid (CSF) production. Its main function is to visualize blood vessels and blood flow within the brain, particularly to detect abnormalities such as aneurysms, arteriovenous malformations, or vasospasm.
C. A CT angiogram will reveal any fractures within the skull or spine.
A CT angiogram will reveal any fractures within the skull or spine: CT angiography primarily focuses on imaging blood vessels and is not the preferred modality for detecting fractures within the skull or spine. CT scans or plain radiography are typically used to assess bony structures for fractures.
D. A CT angiogram will reveal any decreased blood flow related to vasospasm.
A CT angiogram will reveal any decreased blood flow related to vasospasm: This statement is correct. CT angiography is a specialized imaging technique that combines computed tomography (CT) scanning with contrast dye to visualize blood vessels and blood flow within the brain. It is commonly used to detect and monitor vasospasm, a potentially serious complication of subarachnoid hemorrhage, where blood vessels in the brain constrict, leading to decreased blood flow. CT angiography allows for the visualization of these changes in blood vessel diameter and blood flow dynamics.
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Full Explanation
A. A CT angiogram will reveal any edema within the brain tissue: CT angiography primarily focuses on visualizing blood vessels and blood flow within the brain. While it may incidentally detect areas of edema, its primary purpose is to assess vascular structures rather than brain tissue changes such as edema.
B. A CT angiogram will reveal any overproduction of cerebrospinal fluid (CSF): CT angiography does not assess cerebrospinal fluid (CSF) production. Its main function is to visualize blood vessels and blood flow within the brain, particularly to detect abnormalities such as aneurysms, arteriovenous malformations, or vasospasm.
C. A CT angiogram will reveal any fractures within the skull or spine: CT angiography primarily focuses on imaging blood vessels and is not the preferred modality for detecting fractures within the skull or spine. CT scans or plain radiography are typically used to assess bony structures for fractures.
D. A CT angiogram will reveal any decreased blood flow related to vasospasm: This statement is correct. CT angiography is a specialized imaging technique that combines computed tomography (CT) scanning with contrast dye to visualize blood vessels and blood flow within the brain. It is commonly used to detect and monitor vasospasm, a potentially serious complication of subarachnoid hemorrhage, where blood vessels in the brain constrict, leading to decreased blood flow. CT angiography allows for the visualization of these changes in blood vessel diameter and blood flow dynamics.
Similar Questions
A nurse is caring for a client who has a traumatic brain injury (TBI). Which of the following should the nurse understand is a risk factor for TBI?
A. Marfan's syndrome
Marfan's syndrome: Marfan's syndrome is a genetic disorder that affects the connective tissue in the body, predisposing individuals to various cardiovascular, skeletal, and ocular abnormalities. While Marfan's syndrome can present with certain cranial and intracranial manifestations, such as dural ectasia and intracranial aneurysms, it is not typically considered a direct risk factor for traumatic brain injury (TBI).
B. Hypercarbia
Hypercarbia: Hypercarbia refers to elevated levels of carbon dioxide (CO2) in the blood. While severe hypercarbia can lead to cerebral vasodilation and potentially exacerbate intracranial pressure in individuals with traumatic brain injury, it is not considered a direct risk factor for TBI itself.
C. Falls
Falls: Falls are a significant risk factor for traumatic brain injury (TBI), particularly in older adults and young children. Falls can occur due to various factors such as environmental hazards, impaired mobility, balance issues, or neurological conditions. Falls are a leading cause of TBI-related emergency department visits, hospitalizations, and fatalities.
D. Ventriculostomy
Ventriculostomy: Ventriculostomy involves the placement of a catheter into the ventricular system of the brain to monitor intracranial pressure (ICP) or drain cerebrospinal fluid (CSF). While ventriculostomy is a procedure commonly performed in the management of severe traumatic brain injury to monitor and manage intracranial pressure, it is not a risk factor for TBI itself.
Full Explanation
A. Marfan's syndrome: Marfan's syndrome is a genetic disorder that affects the connective tissue in the body, predisposing individuals to various cardiovascular, skeletal, and ocular abnormalities. While Marfan's syndrome can present with certain cranial and intracranial manifestations, such as dural ectasia and intracranial aneurysms, it is not typically considered a direct risk factor for traumatic brain injury (TBI).
B. Hypercarbia: Hypercarbia refers to elevated levels of carbon dioxide (CO2) in the blood. While severe hypercarbia can lead to cerebral vasodilation and potentially exacerbate intracranial pressure in individuals with traumatic brain injury, it is not considered a direct risk factor for TBI itself.
C. Falls: Falls are a significant risk factor for traumatic brain injury (TBI), particularly in older adults and young children. Falls can occur due to various factors such as environmental hazards, impaired mobility, balance issues, or neurological conditions. Falls are a leading cause of TBI-related emergency department visits, hospitalizations, and fatalities.
D. Ventriculostomy: Ventriculostomy involves the placement of a catheter into the ventricular system of the brain to monitor intracranial pressure (ICP) or drain cerebrospinal fluid (CSF). While ventriculostomy is a procedure commonly performed in the management of severe traumatic brain injury to monitor and manage intracranial pressure, it is not a risk factor for TBI itself.
A nurse is planning care for a client who has hypertrophic cardiomyopathy that has not improved after pharmacologic treatment. Which of the following procedures should the nurse anticipate the health care provider ordering?
A. Pericardiocentesis
Pericardiocentesis: Pericardiocentesis is a procedure used to drain fluid from the pericardial sac, typically performed in cases of pericardial effusion or cardiac tamponade. It is not indicated for the treatment of hypertrophic cardiomyopathy (HCM), which involves structural abnormalities of the heart muscle rather than pericardial fluid accumulation.
B. Septal myectomy
Septal myectomy: Septal myectomy is a surgical procedure performed to treat hypertrophic obstructive cardiomyopathy (HOCM), a subtype of hypertrophic cardiomyopathy characterized by thickening of the interventricular septum and dynamic left ventricular outflow tract obstruction. Septal myectomy involves the surgical removal of a portion of the hypertrophied septum to relieve left ventricular outflow tract obstruction and improve symptoms.
C. Pericardial window
Pericardial window: A pericardial window is a surgical procedure used to create a communication between the pericardial sac and the pleural space, typically performed in cases of recurrent pericardial effusion or tamponade to prevent fluid re-accumulation. It is not indicated for the treatment of hypertrophic cardiomyopathy.
D. Synchronized electrical cardioversion
Synchronized electrical cardioversion: Synchronized electrical cardioversion is a procedure used to restore normal sinus rhythm in patients with certain types of cardiac arrhythmias, such as atrial fibrillation or atrial flutter. It is not typically indicated for the treatment of hypertrophic cardiomyopathy, although patients with HCM may develop arrhythmias as a complication.
Full Explanation
A. Pericardiocentesis: Pericardiocentesis is a procedure used to drain fluid from the pericardial sac, typically performed in cases of pericardial effusion or cardiac tamponade. It is not indicated for the treatment of hypertrophic cardiomyopathy (HCM), which involves structural abnormalities of the heart muscle rather than pericardial fluid accumulation.
B. Septal myectomy: Septal myectomy is a surgical procedure performed to treat hypertrophic obstructive cardiomyopathy (HOCM), a subtype of hypertrophic cardiomyopathy characterized by thickening of the interventricular septum and dynamic left ventricular outflow tract obstruction. Septal myectomy involves the surgical removal of a portion of the hypertrophied septum to relieve left ventricular outflow tract obstruction and improve symptoms.
C. Pericardial window: A pericardial window is a surgical procedure used to create a communication between the pericardial sac and the pleural space, typically performed in cases of recurrent pericardial effusion or tamponade to prevent fluid re-accumulation. It is not indicated for the treatment of hypertrophic cardiomyopathy.
D. Synchronized electrical cardioversion: Synchronized electrical cardioversion is a procedure used to restore normal sinus rhythm in patients with certain types of cardiac arrhythmias, such as atrial fibrillation or atrial flutter. It is not typically indicated for the treatment of hypertrophic cardiomyopathy, although patients with HCM may develop arrhythmias as a complication.
A nurse is providing care for a postoperative client. Which of the following manifestations should the nurse identify as indicating the development of postoperative shock?
A. The client has metabolic alkalosis and warm extremities
The client has metabolic alkalosis and warm extremities: Metabolic alkalosis and warm extremities are not typically indicative of postoperative shock. Metabolic alkalosis may be caused by excessive vomiting or prolonged gastric suctioning, but it is not a hallmark sign of shock. Warm extremities may suggest adequate peripheral perfusion rather than impaired perfusion seen in shock.
B. The client develops bradycardia and bradypnea
The client develops bradycardia and bradypnea: Bradycardia (slow heart rate) and bradypnea (slow respiratory rate) may occur as compensatory mechanisms in certain types of shock, such as neurogenic shock. However, they are not specific indicators of postoperative shock. Tachycardia (rapid heart rate) and tachypnea (rapid respiratory rate) are more common findings in most types of shock, including postoperative shock.
C. The client has hypotension and is confused
The client has hypotension and is confused: Hypotension (low blood pressure) and confusion are classic signs of shock, including postoperative shock. Hypotension indicates inadequate perfusion of vital organs, while confusion may result from cerebral hypoperfusion. Altered mental status, such as confusion, is a significant neurological manifestation of shock.
D. The client has hypertension and anuria
The client has hypertension and anuria: Hypertension (high blood pressure) and anuria (decreased urine output) are not typical manifestations of postoperative shock. Hypertension may occur in certain conditions that can lead to shock, such as septic shock, during the compensatory phase. However, it is not a primary sign of shock. Anuria may occur in cases of severe hypovolemic shock but is not specific to postoperative shock.
Full Explanation
A. The client has metabolic alkalosis and warm extremities: Metabolic alkalosis and warm extremities are not typically indicative of postoperative shock. Metabolic alkalosis may be caused by excessive vomiting or prolonged gastric suctioning, but it is not a hallmark sign of shock. Warm extremities may suggest adequate peripheral perfusion rather than impaired perfusion seen in shock.
B. The client develops bradycardia and bradypnea: Bradycardia (slow heart rate) and bradypnea (slow respiratory rate) may occur as compensatory mechanisms in certain types of shock, such as neurogenic shock. However, they are not specific indicators of postoperative shock. Tachycardia (rapid heart rate) and tachypnea (rapid respiratory rate) are more common findings in most types of shock, including postoperative shock.
C. The client has hypotension and is confused: Hypotension (low blood pressure) and confusion are classic signs of shock, including postoperative shock. Hypotension indicates inadequate perfusion of vital organs, while confusion may result from cerebral hypoperfusion. Altered mental status, such as confusion, is a significant neurological manifestation of shock.
D. The client has hypertension and anuria: Hypertension (high blood pressure) and anuria (decreased urine output) are not typical manifestations of postoperative shock. Hypertension may occur in certain conditions that can lead to shock, such as septic shock, during the compensatory phase. However, it is not a primary sign of shock. Anuria may occur in cases of severe hypovolemic shock but is not specific to postoperative shock.