WorksheetsNeuroanesthesia Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following is the most significant factor affecting cerebral blood flow (CBF) in a patient with traumatic brain injury (TBI)?
Mean arterial pressure (MAP)
Partial pressure of arterial oxygen (PaO₂)
Partial pressure of arterial carbon dioxide (PaCO₂)
Intracranial pressure (ICP)
In a patient undergoing craniotomy for tumor resection, which anesthetic agent is least likely to increase ICP?
Isoflurane
Propofol
Sevoflurane
Desflurane
What is the target cerebral perfusion pressure (CPP) in a patient with severe traumatic brain injury (TBI)?
40-50 mmHg
50-60 mmHg
60-70 mmHg
70-80 mmHg
During intraoperative monitoring of a patient undergoing posterior fossa surgery, which cranial nerve is most commonly at risk?
Trigeminal nerve (V)
Facial nerve (VII)
Glossopharyngeal nerve (IX)
Hypoglossal nerve (XII)
Which of the following is a contraindication to the use of hyperventilation in neuroanesthesia?
Elevated ICP
Cerebral ischemia
Brain tumor
Subarachnoid hemorrhage
During deep brain stimulation (DBS) surgery, which anesthetic technique is preferred to allow intraoperative neurological assessment?
Total intravenous anesthesia (TIVA) with propofol
Awake craniotomy with local anesthesia
Balanced anesthesia with volatile agents
General anesthesia with neuromuscular blockade
Which of the following is the most sensitive indicator of cerebral ischemia during carotid endarterectomy?
Electroencephalography (EEG) changes
Somatosensory evoked potentials (SSEPs)
Transcranial Doppler (TCD) velocity
Near-infrared spectroscopy (NIRS)
In a patient with subarachnoid hemorrhage (SAH), what is the primary goal of hemodynamic management in the perioperative period?
Maintain normotension to prevent rebleeding
Induce hypertension to improve cerebral perfusion
Maintain hypotension to reduce bleeding risk
Avoid fluid overload to prevent pulmonary edema
Which of the following drugs is most effective for neuroprotection during temporary clipping in aneurysm surgery?
Mannitol
Thiopental
Dexmedetomidine
Furosemide
What is the primary concern when using nitrous oxide (N₂O) during craniotomy?
Increased ICP
Pneumocephalus
Seizure risk
Delayed emergence
In a patient with a Glasgow Coma Scale (GCS) score of 6, which anesthetic induction agent is most appropriate?
Ketamine
Etomidate
Midazolam
Propofol
During intraoperative neuromonitoring, a significant reduction in motor evoked potentials (MEPs) is observed. What is the most likely cause?
Hypocapnia
Volatile anesthetic use
Hypothermia
Hyperglycemia
Which of the following is a risk factor for postoperative cognitive dysfunction (POCD) after neurosurgery?
Use of remifentanil
Advanced age
Short surgical duration
Use of dexmedetomidine
In a patient undergoing spine surgery in the prone position, what is the most common complication related to positioning?
Brachial plexus injury
Optic neuropathy
Pressure ulcers
Venous air embolism
Which of the following is the most effective strategy to reduce cerebral edema intraoperatively?
Hyperventilation to PaCO₂ 25-30 mmHg
Administration of mannitol
Induced hypothermia
High-dose corticosteroids
What is the primary mechanism by which dexmedetomidine provides benefit in neuroanesthesia?
Reduction in CMR
Anticonvulsant properties
Sedation without respiratory depression
Vasodilation of cerebral vessels
During a craniotomy, sudden bradycardia and hypertension are observed. What is the most likely cause?
Cushing's reflex
Hypovolemia
Anaphylactic reaction
Pain response
Which of the following is the most appropriate intraoperative fluid for a patient undergoing craniotomy?
5% dextrose
Normal saline (0.9% NaCl)
Ringer's lactate
3% saline
In a patient with moyamoya disease undergoing revascularization surgery, what is the primary anesthetic goal?
Maintain hypocapnia to reduce CBF
Avoid hypotension to prevent cerebral ischemia
Use high-dose opioids to minimize pain
Induce hypothermia to reduce CMR
Which of the following is a potential complication of intraoperative use of sodium nitroprusside for controlled hypotension?
Cyanide toxicity
Hyperkalemia
Seizures
Coagulopathy
