Anesthetic Depth
What is the triad of anesthesia
Amnesia, analgesia, akinesis
This IV induction agent is a GABA-A agonist with rapid onset and antiemetic properties.
Propofol
This is the primary physiologic reason you avoid positive pressure ventilation during RSI.
Prevention of gastric insufflation and aspiration
This physiologic property explains why desflurane has rapid emergence.
low blood:gas partition coefficient
This is the best site to assess intubating conditions due to its correlation with diaphragm relaxation.
Facial nerve
This term describes a reversible state of CNS depression resulting in loss of response to stimuli.
general anesthesia
This induction agent is preferred in hemodynamically unstable patients due to minimal CV depression.
Etomidate
This force (in Newtons or pounds) should be applied after loss of consciousness during cricoid pressure.
30–44 N (≈6–10 lbs)
This MAC level is required to block adrenergic response to surgical stimulation.
MAC-BAR (~1.6 MAC)
This pattern of stimulation is most sensitive for detecting residual neuromuscular blockade.
double-burst stimulation
This stage is characterized by irregular respirations, dilated pupils, and risk of laryngospasm due to CNS excitation.
Stage 2
This opioid-related complication results from rapid administration and is due to central dopaminergic inhibition of motor pathways.
Chest wall rigidity
Name one indication for RSI.
GERD / full stomach / pregnancy / obesity
This physiologic effect of volatile anesthetics contributes to hypotension.
decreased SVR (vasodilation)
This physiologic mechanism explains fade with nondepolarizing neuromuscular blockers.
blockade of presynaptic acetylcholine receptors decreasing ACh mobilization
This plane of Stage III anesthesia is considered the “sweet spot” for surgery.
Plane II
This enzyme inhibition by etomidate leads to decreased cortisol synthesis.
11-beta-hydroxylase
What is the rocuronium RSI dose?
1.2mg/kg
This receptor-level change explains increased MAC in chronic alcohol users.
GABA downregulation and NMDA upregulation
This TOF finding indicates that up to 70% of receptors may still be occupied.
4/4 twitches present
At approximately this MAC range, awareness becomes possible despite apparent sedation.
0.4–0.6 MAC
This physiologic effect of ketamine makes it advantageous in asthmatic patients but potentially harmful in neurosurgical cases.
Increased sympathetic tone causing bronchodilation but also increased ICP/CBF
This is the physiologic mechanism by which obesity increases aspiration risk.
What is increased intra-abdominal pressure leading to decreased LES tone
This inhaled anesthetic property determines speed of induction rather than potency.
blood:gas solubility
This condition results in resistance to succinylcholine but increased sensitivity to nondepolarizing agents.
myasthenia gravis