ABA ABA Anesthetic Equipment and Technology 2

Question 1

What physiologic parameter does a pulse oximeter directly measure?

Accepted Answer

Functional oxygen saturation of hemoglobin (SpO2)

Answer

Pulse oximetry uses differential light absorption at two wavelengths to measure the functional oxygen saturation of hemoglobin non-invasively.

Question 2

Which monitoring modality is used to quantitatively assess the degree of neuromuscular blockade intraoperatively?

Accepted Answer

Train-of-four (TOF) stimulation

Answer

TOF stimulation applies four electrical stimuli to a peripheral nerve and counts the resulting twitches to quantify residual neuromuscular blockade.

Question 3

What is capnography's most critical use during induction of general anesthesia?

Accepted Answer

Confirming correct endotracheal tube placement in the trachea

Answer

A sustained end-tidal CO2 waveform on capnography is the gold standard for confirming correct endotracheal tube placement in the trachea.

Question 4

What is the normal end-tidal CO2 (EtCO2) range during general anesthesia with normoventilation?

Accepted Answer

35-45 mmHg

Answer

Normal EtCO2 during anesthesia is 35-45 mmHg, reflecting normoventilation and adequate alveolar CO2 elimination.

Question 5

The Bispectral Index (BIS) monitor derives its numerical output from processed signals of which physiologic source?

Accepted Answer

Electroencephalogram (EEG)

Answer

BIS analyzes processed EEG signals from frontal scalp electrodes to provide a numerical index (0-100) representing the patient's level of consciousness.

(ABA) American Board of Anesthesiology Practice Test

(ABA) American Board of Anesthesiology Practice Test

ABA ABA Anesthetic Equipment and Technology 2