CABT Clinical Procedures & Techniques 2

Question 1

During a 12-lead ECG procedure, which electrode placement is considered the reference point (Wilson's central terminal) for augmented unipolar limb leads?

Accepted Answer

Average of right arm, left arm, and left leg electrodes

Answer

Right arm electrode only

Answer

Left arm and left leg electrodes combined

Answer

Sternum midpoint electrode

Question 2

A biomedical technician is calibrating a spirometer. The primary performance verification standard for volume accuracy requires the device to be within what tolerance?

Accepted Answer

±3.5% of reading or 65 mL (whichever is greater)

Answer

±1% of reading

Answer

±5% of reading

Answer

±10 mL absolute

Question 3

When performing a blood glucose meter accuracy check per ISO 15197:2013, what percentage of results must fall within ±15 mg/dL (for concentrations <100 mg/dL) or ±15%?

Accepted Answer

95%

Answer

85%

Answer

90%

Answer

99%

Question 4

Which sterilization method is most appropriate for heat-sensitive flexible endoscopes?

Accepted Answer

Ethylene oxide (EtO) or hydrogen peroxide gas plasma

Answer

Steam autoclave at 134°C

Answer

Dry heat oven at 160°C

Answer

UV radiation chamber

Question 5

During phlebotomy, the tourniquet should be released within what timeframe to prevent hemoconcentration artifacts in laboratory results?

Accepted Answer

1 minute

Answer

30 seconds

Answer

2 minutes

Answer

5 minutes

Question 6

A patient's pulse oximeter reads 98% SpO2 but the patient appears cyanotic. Which condition could MOST likely cause this discrepancy?

Accepted Answer

Carbon monoxide poisoning

Answer

Hypercapnia

Answer

Iron deficiency anemia

Answer

Hypothyroidism

Question 7

When setting up a continuous passive motion (CPM) device post-knee surgery, which parameter is adjusted FIRST before range-of-motion settings?

Accepted Answer

Limb length/segment alignment

Answer

Speed of cycling

Answer

Flexion angle limit

Answer

Pause time at end range