CABT Clinical Procedures & Techniques 4

Question 1

A technician sets up an infusion pump for a pediatric patient. The pump alarms 'occlusion' immediately after starting. Which is the FIRST troubleshooting step?

Accepted Answer

Check tubing for kinks, closed clamps, or positional blockages

Answer

Replace the pump entirely

Answer

Increase the pump's occlusion pressure threshold

Answer

Switch to gravity infusion immediately

Question 2

In pulse oximetry, the 'perfusion index' (PI) displayed on some monitors indicates:

Accepted Answer

The strength of the pulsatile signal relative to the non-pulsatile signal

Answer

The ratio of SpO2 to heart rate

Answer

The percentage of hemoglobin saturated with oxygen

Answer

The patient's peripheral vascular resistance

Question 3

Which standard governs the electrical safety testing intervals and methods for medical electrical equipment in US healthcare facilities?

Accepted Answer

IEC 62353

Answer

NFPA 70E

Answer

ANSI/AAMI ES60601-1

Answer

OSHA 1910.147

Question 4

When calibrating a tonometer (used for intraocular pressure measurement), the reference weight used for calibration represents what physical principle?

Accepted Answer

Force required to flatten a defined area of the cornea

Answer

Electrical impedance of the cornea

Answer

Acoustic reflection from the vitreous humor

Answer

Light refraction index of the tear film

Question 5

A surgical team reports that the monopolar electrosurgery unit (ESU) causes interference with an implanted cardiac pacemaker. The SAFEST recommendation is to:

Accepted Answer

Use bipolar electrosurgery and keep ESU current path away from the pacemaker

Answer

Increase ESU power to reduce activation time

Answer

Place the dispersive pad as close to the ESU active electrode as possible

Answer

Disable pacemaker sensing mode during surgery

Question 6

During a neonatal incubator performance check, the technician measures temperature uniformity. The maximum allowable temperature variation within the incubator workspace per IEC 60601-2-19 is:

Accepted Answer

±1.0°C

Answer

±0.5°C

Answer

±1.5°C

Answer

±2.0°C

Question 7

In high-level disinfection (HLD) of reusable semicritical devices, the minimum effective glutaraldehyde concentration for achieving HLD at room temperature is typically:

Accepted Answer

2.0%

Answer

0.5%

Answer

1.0%

Answer

3.5%