What do systematic reviews say?

Straight vs coiled catheters

Straight showed no clear difference in peritonitis rate (patient‐months) compared with coiled catheters (moderate certainty).

• Catheter type, placement and insertion techniques for preventing catheter‐related infections in chronic peritoneal… 2019 · Cochrane Headline outcomes only
  RR 0.91 [0.68, 1.21]
  5 studies · 5882 participants
  Moderate