CFA Hemostasis & Suture Techniques 3

Question 1

Which of the following suture materials has the LONGEST absorption time in tissue?

Accepted Answer

Polydioxanone (PDS)

Answer

PDS (polydioxanone) retains tensile strength for approximately 6 weeks and is fully absorbed over 6 months, the longest of these options.

Question 2

The first assistant's role during vessel ligation includes:

Accepted Answer

Maintaining exposure and passing ties so the surgeon can ligate efficiently

Answer

The first assistant maintains exposure, retracts surrounding tissue, and passes suture material to facilitate the surgeon's accurate ligature placement.

Question 3

Bipolar electrosurgery differs from monopolar primarily because:

Accepted Answer

Current passes only between the two tips of the forceps, limiting spread

Answer

In bipolar electrosurgery current flows only between the two forceps tips, confining energy to the grasped tissue and minimizing collateral thermal injury.

Question 4

A suture labeled '5-0' compared to a suture labeled '2-0' is:

Accepted Answer

Thinner and weaker

Answer

In the USP suture sizing system, higher numbers beyond 0 indicate smaller diameter and lower tensile strength (e.g., 5-0 is finer than 2-0).

Question 5

During laparoscopic surgery, which hemostatic energy device uses ultrasonic vibration to coagulate and cut tissue simultaneously?

Accepted Answer

Harmonic scalpel

Answer

The Harmonic scalpel uses ultrasonic energy at 55,000 Hz to vibrate a blade, generating frictional heat that denatures protein and achieves hemostasis while cutting.

CFA Practice Test

CFA Practice Test

CFA Hemostasis & Suture Techniques 3