OSCE Procedural Skills 4

Question 1

In an OSCE station for venepuncture, the most common complication is haematoma formation. What is the primary preventive measure?

Accepted Answer

Applying firm pressure at the site for at least 1–2 minutes after needle removal

Answer

Sustained direct pressure after needle withdrawal allows vessel sealing and prevents extravasation of blood into surrounding tissue.

Question 2

A patient presents with a dislocated shoulder. Before and after reduction, which nerve function should specifically be tested?

Accepted Answer

Axillary nerve (sensation over regimental badge area)

Answer

The axillary nerve wraps around the surgical neck of the humerus and is the most commonly injured nerve in anterior shoulder dislocation.

Question 3

When performing a Gram stain, what color do Gram-positive organisms appear after the procedure?

Accepted Answer

Purple/blue

Answer

Gram-positive organisms retain crystal violet dye and appear purple-blue due to their thick peptidoglycan cell wall.

Question 4

During bag-valve-mask (BVM) ventilation, what is the correct technique for a two-person approach?

Accepted Answer

One person maintains a two-hand mask seal using C-E clamp, while the second person squeezes the bag

Answer

A two-person technique allows one provider to use both hands for an optimal mask seal while the other delivers consistent tidal volumes.

Question 5

A patient needs an incision and drainage (I&D) of a superficial abscess. After drainage, what is the appropriate wound management?

Accepted Answer

Pack the cavity loosely with ribbon gauze and allow healing by secondary intention

Answer

Abscesses should be packed to prevent premature skin closure and allow the cavity to fill in from the base to avoid re-accumulation.

OSCE Practice Test