- Catheter obstruction: early catheter obstruction in LCP has lower proportion than in OL (7, 1% versus 17, 2%, p < 0, 05), the proportion of catheter obstruction due to omentum lower (1% versus 14%, p < 0, 0001), lower revision of catheter obstruction (6, 1% versus 15, 1%, p < 0, 05).