What is the primary rationale for using a 70% ethanol lock solution?

What is the primary rationale for using a 70% ethanol lock solution?

• A. To sterilize the external skin around the exit site
• B. To reduce catheter-related bloodstream infections
• C. To promote rapid clot formation
• D. To increase fibrin deposition

Answer: (B)

The main idea is that a 70% ethanol lock reduces catheter-related bloodstream infections by eradicating organisms inside the catheter lumen and disrupting biofilms that form on the inner surfaces. Ethanol is a potent antiseptic that penetrates and dissolves biofilms, which are a major source of persistent catheter colonization and infection. Using the ethanol lock between uses targets the source of infection within the catheter itself, rather than focusing on external skin care. It is not intended to promote clot formation or fibrin deposition, and must be used with attention to catheter material compatibility and protocol-recommended dwell times to avoid compromising catheter function.

The main idea is that a 70% ethanol lock reduces catheter-related bloodstream infections by eradicating organisms inside the catheter lumen and disrupting biofilms that form on the inner surfaces. Ethanol is a potent antiseptic that penetrates and dissolves biofilms, which are a major source of persistent catheter colonization and infection. Using the ethanol lock between uses targets the source of infection within the catheter itself, rather than focusing on external skin care. It is not intended to promote clot formation or fibrin deposition, and must be used with attention to catheter material compatibility and protocol-recommended dwell times to avoid compromising catheter function.