What do systematic reviews say?

Long (> 20 cm) vs short (≤ 20 cm) catheter

Long (> 20 cm) may leads to lower vascular access complications compared with short (≤ 20 cm) catheter (low certainty).

• Non‐pharmacological interventions for preventing clotting of extracorporeal circuits during continuous renal… 2021 · Cochrane Headline outcomes only
  RR 0.38 [0.2, 0.72]
  1 study · 94 participants
  Low