PAS Workplace Ergonomic Interventions 2

Question 1

When conducting a workstation ergonomic assessment, which seated posture guideline is most critical for preventing lumbar strain?

Accepted Answer

Hips flexed at 90° with lumbar support maintaining natural lordosis

Answer

Maintaining 90° hip flexion with lumbar support preserves the natural lordotic curve and minimizes lumbar disc compression.

Question 2

A client who works at a standing desk reports foot and calf fatigue after 2 hours. The MOST effective ergonomic intervention is:

Accepted Answer

Switching to an anti-fatigue mat and encouraging weight-shifting

Answer

Anti-fatigue mats reduce ground reaction forces and encouraging weight-shifting activates postural muscles to reduce static loading.

Question 3

For a typist experiencing wrist extensor strain, which keyboard positioning change is the priority ergonomic fix?

Accepted Answer

Position keyboard so wrists remain neutral (neither flexed nor extended)

Answer

Neutral wrist positioning eliminates extensor overload caused by chronic wrist extension during typing.

Question 4

In a PAS ergonomic intervention, which finding would MOST indicate the need to adjust monitor height?

Accepted Answer

Client consistently tilts the head back 15–20° to view the screen

Answer

Chronic cervical extension from a low monitor causes upper cervical and suboccipital strain requiring height correction.

Question 5

A dental hygienist has chronic right shoulder elevation from instrument handling. The BEST ergonomic correction targets:

Accepted Answer

Lowering the patient chair so the arm hangs near 20° abduction rather than exceeding 30°

Answer

Keeping arm abduction under 30° reduces upper trapezius activation and prevents sustained shoulder elevation.

(PAS) Postural Alignment Specialist Practice Test