Related Experiment Videos
[The subclavian vein catheter related infections (author's transl)]
Abstract:
The aim of the present investigation was to study the possible means to prevent the subclavian vein catheter related infections. The tip of the catheter and the part situating at the skin puncture were cultured using the semiquantitative culture method. The growth of the micro-organisms was divided into three groups: classical pathogenic, opportunistic and non pathogenic. We did not find any growth in 64 p. cent of the catheters. The puncture site gave growth in 15 p. cent, the catheter tip in 6,5 p. cent and both of them in 14 p. cent In this study four cases (1,5 p. cent) of septicemias were found. In these cases Streptococcus fecalis was the most common microorganism. The aim of the semiquantitative culture method was to differentiate a real catheter related infection and contamination. The real infection was found only in 32 catheter tips though growth was seen in 54 catheter tips. According to this investigation it seems that the most important factor in preventing catheter related infections was strict sterility during the catheter placement as well as during the maintenance. A small dose of heparin probably reduces the formation of fibrin sleeve around the catheter tip and thus prevents infections. The time the patient is catheterized is also of importance, patients with catheter related septicemia had twice as long duration than cases without growth of catheter tip.
Insights
Preventing subclavian vein catheter infections requires strict sterility during placement and maintenance. A small heparin dose and shorter catheter duration may also reduce infection risks.
Area of Science:
- Infectious Diseases
- Medical Microbiology
- Clinical Medicine
Context:
- Subclavian vein catheters are essential for patient care but pose a risk of infection.
- Catheter-related infections can lead to serious complications, including sepsis.
- Preventive strategies are crucial to minimize patient morbidity and healthcare costs.
Purpose:
- To investigate methods for preventing subclavian vein catheter-related infections.
- To evaluate the efficacy of semiquantitative culture methods in distinguishing infection from contamination.
- To identify key factors influencing the incidence of catheter-related infections.
Summary:
- Semiquantitative cultures of catheter tips and skin puncture sites were performed.
- Microbial growth was categorized into pathogenic, opportunistic, and non-pathogenic.
- Strict sterility during catheter insertion and maintenance emerged as the most critical preventive factor.
- A small dose of heparin and shorter catheterization duration may reduce infection rates.
Impact:
- Highlights the paramount importance of aseptic techniques in catheter care.
- Suggests heparin and duration of catheterization as potential modifiable risk factors.
- Provides insights for developing evidence-based guidelines for catheter insertion and management.
- Aims to reduce the incidence of catheter-related bloodstream infections and improve patient outcomes.