ABA Fundamentals & Core Concepts 4

Question 1

During laryngoscopy and intubation, the hemodynamic response is primarily mediated by:

Accepted Answer

Sympathoadrenal activation causing tachycardia and hypertension

Answer

Laryngoscopy stimulates sympathoadrenal reflexes via the glossopharyngeal and vagus nerves, causing catecholamine release and resulting in hypertension, tachycardia, and increased myocardial oxygen demand.

Question 2

The Henderson-Hasselbalch equation is used to determine:

Accepted Answer

The pH of a buffer solution based on pKa and concentration ratio

Answer

The Henderson-Hasselbalch equation (pH = pKa + log[base/acid]) describes the relationship between pH and the ionization state of weak acids and bases in solution.

Question 3

Which of the following statements about propofol pharmacokinetics is CORRECT?

Accepted Answer

It undergoes significant first-pass pulmonary metabolism

Answer

Propofol undergoes significant first-pass uptake and metabolism in the lungs, which contributes to its rapid offset after bolus administration.

Question 4

The Trendelenburg position is CONTRAINDICATED or requires extreme caution in patients with:

Accepted Answer

Elevated intracranial pressure

Answer

Trendelenburg position increases ICP by impeding cerebral venous drainage due to increased intrathoracic pressure and venous congestion, making it hazardous in patients with intracranial hypertension.

Question 5

Which volatile anesthetic has the HIGHEST risk of triggering malignant hyperthermia (MH)?

Accepted Answer

All potent halogenated volatiles carry equal MH risk

Answer

All potent halogenated volatile anesthetics (halothane, isoflurane, sevoflurane, desflurane) are equally capable of triggering MH in susceptible individuals via ryanodine receptor activation.

(ABA) ASA (American Society of Anesthesiologists) Board Certification Practice Test

(ABA) ASA (American Society of Anesthesiologists) Board Certification Practice Test

ABA Fundamentals & Core Concepts 4