VA-BC Ultrasound Guidance 5

Question 1

A nurse documents that a patient's basilic vein has 'posterior acoustic enhancement' on ultrasound. This artifact indicates:

Accepted Answer

The vein is fluid-filled and patent

Answer

Posterior acoustic enhancement is a classic artifact seen deep to fluid-filled structures like patent vessels, where sound passes through fluid with less attenuation, brightening the tissue behind.

Question 2

When scanning for a target vein in a pediatric patient, which ultrasound probe type is preferred due to its small footprint?

Accepted Answer

Hockey-stick (micro-linear) probe

Answer

The hockey-stick (micro-linear) probe has a very small footprint ideal for pediatric patients and small scanning areas while maintaining high-frequency resolution.

Question 3

During an ultrasound-guided vascular access procedure, the nurse aspirates bright red, pulsatile blood. The immediate next step is:

Accepted Answer

Apply firm sustained pressure for at least 5 minutes and reassess

Answer

Bright red pulsatile blood indicates inadvertent arterial puncture; the needle should be removed immediately and sustained pressure applied for at least 5 minutes to achieve hemostasis.

Question 4

Which ultrasound maneuver helps differentiate a thrombosed vein from a lymph node during upper extremity vascular assessment?

Accepted Answer

Apply color Doppler to detect internal blood flow

Answer

Color Doppler can demonstrate internal blood flow within a vessel (even thrombosed portions may show flow), while lymph nodes typically show no central blood flow or only peripheral hilar flow.

Question 5

A PICC nurse uses ultrasound to assess a patient's median cubital vein at the antecubital fossa. This vessel is generally NOT preferred for PICC insertion because:

Accepted Answer

It is too short and merges near the elbow joint, increasing dwell complications

Answer

The median cubital vein is short, superficial, and located over the elbow joint, making it prone to catheter kinking, dislodgement, and mechanical phlebitis with arm movement.

(VA-BC) Vascular Access Nurse Certification Practice Test

(VA-BC) Vascular Access Nurse Certification Practice Test

VA-BC Ultrasound Guidance 5