ABA Technology & Digital Tools 3

Question 1

In transesophageal echocardiography (TEE), the midesophageal four-chamber view is obtained at approximately which probe insertion depth?

Accepted Answer

30–35 cm from the incisors

Answer

The midesophageal views are obtained at approximately 30–35 cm from the incisors, where the esophagus lies directly posterior to the heart.

Question 2

A bispectral index (BIS) value of 60 during general anesthesia indicates:

Accepted Answer

Adequate hypnotic depth with low awareness risk

Answer

A BIS of 40–60 corresponds to general anesthesia with acceptable depth; values of 60 reflect adequate hypnosis with very low intraoperative awareness probability.

Question 3

Which technology enables real-time visualization of needle tip position during ultrasound-guided regional anesthesia in obese patients with poor acoustic windows?

Accepted Answer

Echogenic needle design with side-port reflectors

Answer

Echogenic needles with textured or cut surfaces increase specular reflection, improving needle tip visibility under ultrasound especially in challenging acoustic windows.

Question 4

Which ventilator parameter is automatically adjusted by modern adaptive pressure-support modes (e.g., ASV, PRVC) to maintain a target tidal volume?

Accepted Answer

Pressure support level

Answer

Adaptive modes adjust the delivered pressure support breath-by-breath to hit a clinician-set tidal volume target based on measured lung compliance.

Question 5

Volumetric capnography (V-slope analysis) can non-invasively estimate which parameter important to anesthetic management?

Accepted Answer

Dead space to tidal volume ratio (Vd/Vt)

Answer

Volumetric capnography plots CO2 against expired volume, and the phase III slope and Bohr equation allow calculation of physiologic dead space fraction.

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

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

ABA Technology & Digital Tools 3