No abstract

Methodological challenges associated with sensitive research, such as research with vulnerable families, have been well described, but there are few examples of how such challenges have been addressed in specific projects. To help address this gap, we describe how we designed and conducted a qualitative study of 91 members of 29 families caring for children or young people with life-limiting conditions. Although some issues associated with researching sensitive topics were anticipated, others were encountered that were not expected. We discuss insights gained from this study in relation to factors that influence effectiveness of recruitment, the quality of data collection, and the safety of participants and researchers.

We found a four-fold increase in the rate of catheter related blood stream infection when a polyurethane dressing was used to secure the central venous catheter however this research was at risk of bias and the confidence intervals were wide indicating high uncertainty around this estimate; so the true effect could be as small as 2% or as high as 17-fold. More, better quality research is needed regarding the relative effects of gauze and tape versus polyurethane dressings for central venous catheter sites.

Skin antisepsis for reducing central venous catheter-related infections.

There is a high level of uncertainty regarding the risk of infection with the central venous catheter dressings identified in this review. Therefore, at this stage it appears that the choice of dressing for central venous catheters can be based on patient preference. To identify the most appropriate central venous catheter dressings, further research is necessary. It is paramount that any future studies investigating this issue must be rigorously performed randomised controlled trials.

There was no evidence of any difference in the incidence of infectious complications between any of the dressing types compared in this review. Each of these comparisons was based on no more than two studies and all of these studies reported data from a small patient sample. Therefore it is unlikely that any of these comparisons would have had sufficient power to detect any differences between groups.

Catheter impregnation, coating or bonding for reducing central venous catheter-related infections in adults.

Issue 9. Cochrane Reviews are regularly updated as new evidence emerges and in response to comments and criticisms, and the Cochrane Database of Systematic Reviews should be consulted for the most recent version of the Review.