BCA BCA Neuroanesthesia & Neurosurgical Procedures

Question 1

Which anesthetic agent is MOST commonly used for neurosurgical procedures due to its ability to decrease cerebral metabolic rate?

Accepted Answer

Propofol

Answer

Ketamine

Answer

Etomidate

Answer

Nitrous oxide

Question 2

During craniotomy, a sudden bradycardia with hypertension (Cushing's triad) most likely indicates:

Accepted Answer

Raised intracranial pressure

Answer

Anesthetic overdose

Answer

Malignant hyperthermia

Answer

Vasovagal response

Question 3

Which position is MOST associated with venous air embolism risk during neurosurgery?

Accepted Answer

Sitting (beach chair)

Answer

Supine

Answer

Lateral decubitus

Answer

Prone

Question 4

The BEST method to detect venous air embolism intraoperatively is:

Accepted Answer

Precordial Doppler ultrasound

Answer

End-tidal CO2 monitoring

Answer

Transesophageal echocardiography

Answer

Pulmonary artery catheter

Question 5

Hyperventilation is used in neurosurgery primarily to:

Accepted Answer

Decrease PaCO2 to cause cerebral vasoconstriction

Answer

Increase cerebral blood flow

Answer

Increase oxygen delivery to the brain

Answer

Prevent pulmonary atelectasis

Question 6

During spinal cord surgery, which electrophysiological monitoring modality assesses dorsal column (sensory) pathway integrity?

Accepted Answer

Somatosensory evoked potentials (SSEPs)

Answer

Motor evoked potentials (MEPs)

Answer

Electroencephalography (EEG)

Answer

Electromyography (EMG)