Background
Peripherally inserted central venous catheters (PICC) are increasingly used in critically ill patients for the ease of access, long-term medication and total parenteral nutrition administration. There is a perception of equivalent utility of PICC lines with a lower incidence of complications as compared to central venous lines. Despite the perception of relative safety, complications can occur.
Case Presentation
We describe a case of a patient who developed increasing signs and symptoms of sepsis, shortness of breath, and hypoxemia following combined liver and renal transplant 11 days following the initial procedure. Computerised tomography of neck and chest demonstrated pneumo-mediastinum, extensive retropharyngeal and subcutaneous emphysema. The patient returned to theatre on post-operative day 12, for flexible bronchoscopy, video-assisted thoracoscopic surgery and mediastinal washout. Following a further clinical and imaging review, an un-anticipated diagnosis of extravasated peripherally inserted central venous cannula (PICC) as a causative factor of multiple pathologies was made. PICC line was removed. Mediastinal and thoracoscopic examinations were performed and drains inserted. The patient returned to the intensive care unit for ongoing supportive management, with a gradual improvement of sepsis and resolution of mediastinal air distribution.
Conclusions
Peripherally inserted central venous catheters have an ease of insertion and appreciable favourable health economic outcomes. Recent reviews however have demonstrated an increased risk of catheter tip malposition, in addition to increased risk of thrombosis as compared to central venous lines. Due to the characteristic mobility of these devices, mediastinal and intra-thoracic extravasation of these catheters can occur with consequent severe morbidity. Awareness of the tip position and accompanying clinical and radiological enquiry, must be performed both in the differential diagnosis of chest pathology and prior to use of PICC lines in critically ill patients.