What do systematic reviews say?

Straight vs coiled catheters

Straight showed no clear difference in death (all causes) compared with coiled catheters (low certainty).

• Catheter type, placement and insertion techniques for preventing catheter‐related infections in chronic peritoneal… 2019 · Cochrane Headline outcomes only
  RR 0.95 [0.62, 1.46]
  8 studies · 703 participants
  Low