What do the dimensions in the Rule of 6's refer to regarding a new fistula?

The Rule of 6's is a guideline used to evaluate the suitability of a newly created arteriovenous fistula for hemodialysis. When assessing a fistula, certain criteria are considered to ensure that it will provide adequate blood flow for treatments. One key aspect of the Rule of 6's is that the ideal fistula should have a width exceeding 0.6 cm, which indicates that it has achieved sufficient maturation and is capable of handling the blood flow demands associated with hemodialysis.

The width of the fistula is crucial because a larger diameter allows for greater blood flow, which is essential for effective dialysis therapy. If the fistula does not meet this width criterion, it may not be able to sustain the high flow rates necessary for proper dialysis, leading to inadequate treatment and potential complications.

Understanding this guideline helps healthcare providers identify whether a fistula is likely to function well over the long term and supports both patient safety and treatment efficacy.