Anesthesia Principles & Practices Flashcards
7 cards from real ABA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Anesthesia Principles & Practices flashcards as text
Which factor MOST increases the risk of aspiration during rapid sequence induction (RSI)?
Answer: Inadequate depth of anesthesia before laryngoscopy
Light anesthesia preserves airway reflexes but also preserves active vomiting; insufficient anesthetic depth before laryngoscopy can trigger regurgitation and aspiration.
A healthy 70 kg adult patient's functional residual capacity (FRC) is approximately:
Answer: 2,400 mL
FRC in a normal 70 kg adult is approximately 2,400 mL (about 34 mL/kg), representing the lung volume at end-expiration in the upright position.
Ketamine is MOST contraindicated in which clinical scenario?
Answer: Patient with open globe injury and intraocular hypertension
Ketamine raises intraocular pressure, making it dangerous for open globe injuries where further IOP elevation could cause vitreous extrusion.
The oxygen flush valve on an anesthesia machine delivers oxygen at a flow rate of approximately:
Answer: 35–75 L/min
The oxygen flush valve bypasses flowmeters and vaporizers, delivering 35–75 L/min of 100% oxygen directly to the breathing circuit.
Which finding on pulmonary artery catheter (PAC) tracing BEST indicates catheter migration into a wedge position?
Answer: Loss of respiratory variation and appearance of a monophasic waveform
Over-wedging produces a damped, monophasic flat trace without respiratory variation as blood flow distal to the catheter tip ceases.
In obstetric anesthesia, which physiologic change of pregnancy MOST contributes to rapid oxygen desaturation during apnea?
Answer: Reduced FRC combined with increased oxygen consumption
Pregnancy reduces FRC (by ~20%) and increases O2 consumption (~20%), dramatically shortening the safe apnea interval compared to non-pregnant patients.
Which statement about the Meyer-Overton correlation is MOST accurate?
Answer: Anesthetic potency correlates with lipid solubility across diverse chemical classes
The Meyer-Overton correlation shows that across structurally diverse compounds, anesthetic potency (MAC) correlates with oil:gas partition coefficient, suggesting a lipophilic site of action.