Conventional central venous catheters as tunnelled mid-clavicular midline catheters: Description of novel application and outcome analysis.

Background: Long peripheral catheters are the ideal devices for intermediate venous access (1-4 weeks). However due to non-availability and cost constraints, these lines are not widely adapted in developing countries. In this clinical report we describe a technique of using conventional Central Venous Catheters as Midclavicular midlines for intermediate venous access and present the outcome analysis of such catheters in the last 2 years from our institute.

Methods: A single lumen conventional central venous catheter (5 Fr, 20 cm) was introduced through the deep veins of the upper arm, 1 to 1.5 cm distal to the axillary crease. The catheter was tunnelled for a distance of 5 to 7 cm to exit from Dawson's green zone to reduce the incidence of Midline Associated Blood Stream Infection. Patients were followed up by trained staff nurses and outcome parameters were recorded.

Results: Seventy six patients were enrolled and 72 patients underwent successful cannulation and completed the outcome analysis. Administration of intravenous antibiotics and chemotherapy were the commonest indications. The device served the intended duration of therapy in 66 (92%) patients for a median number of 12 (6-20) catheter days. Device related blood stream infection was 1.24/1000 catheter days and catheter related thrombosis rate was 8.3%.

Conclusion: Conventional Central Venous Catheters can be effectively used as tunnelled Midclavicular midline catheters in low resource settings. The successful outcome analysis has to be confirmed by larger studies.