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4.2 Preparation for Renal Replacement Therapy (RRT) 4.2.5 Vascular and Peritoneal Access A pre-emptively placed natural arteriovenous fistula (AVF) is the ideal vascular access for the uraemic patient destined for HD. Early placement avoids emergency insertion of catheters and reduces hospitalisation. At least six weeks is required for an AVF to mature. Similarly, a Tenckhoff catheter for PD should ideally be inserted in time to allow two weeks healing before commencing CAPD or APD. These ideals require time for the multidisciplinary team to co-ordinate surgical review and arrange theatre lists (see Section 4.3.4).  |