Relevant concomitant care permitted or prohibited during the trial {11d}
tCDC
Restrictions are applied if additional central venous catheters are needed before the CT venography has been performed at 1.5–3 months after tCDC removal. Additional central venous catheters may not be placed in any of the study veins but rather in the left subclavian vein, the left internal jugular vein or in a femoral vein. To prevent protocol violations, the restriction will be clearly documented in the medical charts and patients will be informed about this.