[Experiences with long-term intravenous therapy using teflon catheters in 80 horses].

This research studied the effectiveness and tolerance of long-term intravenous (IV) therapy utilizing Teflon-coated catheters in 80 horses. The study found that the use of Teflon-coated catheters for intravenous medication is a desirable option considering the low incidence of side effects and complications, including swelling, abscess formation, and thrombus formation.

Methodology

• The researchers conducted a retrospective analysis on 80 horses that were subjected to long-term intravenous therapy using Teflon-coated catheters. These catheters were inserted into the jugular veins of the horses.
• The duration of catheter insertion varied between each horse, ranging from 3 to 30 days, with an average stay of 8.6 days.
• Beyond every medication administration, an heparinized solution was used to flush the catheters.
• The catheter insertion site was evaluated every day for signs such as swelling, pain, and venous distensibility.

Observations and Findings

• Out of the 80 horses, swelling at the catheter insertion site was observed in 10 horses. Additionally, a small subcutaneous abscess formation was identified in one horse.
• A total of 14 sonographic evaluations were performed on 10 horses, revealing perivascular changes in four horses.
• Thrombus (blood clot) formation, which is a common concern with vascular catheterization, did not occur in any of the horses.
• In all the subject horses, the catheters were observed floating freely within the vascular lumen, indicating successful insertion and positioning.
• Around one third of the cases experienced catheter failure, either due to mechanical issues or due to the horse pulling the catheter out.
• Post catheter removal, there were no adverse side effects reported in any of the horses that could be directly linked to the medication delivery method.

Conclusion

• The findings of the research suggested that intravenous medication using Teflon-coated catheters is a suitable administration method, given its tolerability and low side-effect profile among the horses studied.
• Despite a relatively high incidence of catheter failure, this method proved to be an effective alternative to other modes of administration.