An example catheter assembly includes a first catheter body portion defining a first lumen and a plurality of sidewall openings open to the lumen and configured to at least one of introduce fluid into a patient or remove fluid from the patient. The catheter assembly further includes a second catheter body portion defining a second lumen, a first cuff proximal to a distal end of the first catheter body portion, a second cuff distal to a proximal end of the second catheter body portion, and a connector configured to mechanically connect the first and second catheter body portions between the first and second cuffs and to fluidically connect the first and second lumens. A distance between the first and second cuffs is modifiable by at least modifying one of a length of the first catheter body portion or a length of the second catheter body portion.