A rare vascular injury in a blood donor after whole blood donation

BackgroundBlood donation is a safe process though reactions may still occur. We describe a rare vascular complication in a frequent donor, with improvements in the collection process aimed at avoiding future events.MethodsA 63-year-old woman presented with local pain and an apparent collection in the left arm 8 days after donation. Duplex ultrasound identified a superficial liquid collection and signs of arteriovenous fistula (AVF) between the cubital vein and an arterial branch. A computed tomography (CT)-angio performed 1 day after ultrasound did not identify signs of AVF, followed by a new duplex which confirmed CT-angio findings. It was assumed that a traumatic AVF evolved with spontaneous thrombosis. In the early follow-up (18 days), a progressive regression of hematoma was observed without any sequelae.ResultsInvestigation showed a faster whole blood bag collection time (3 min; normal: 5-9 min), and the processed packed red blood cell had a brighter red color than usual. The donor reported local bleeding after needle withdrawal, not observed in previous donations and a bruise forming on the same day. No arterial puncture (AP) was noticed by the collection staff during the procedure. The staff was retrained and actions were taken focusing on more active surveillance of late reactions, highlighting the importance of post-donation information by the donors, regardless of any adverse reaction observed, to detect late complications.ConclusionWe described an uncommon AP in a donor that was not identified, leading to an AVF that spontaneously thrombosed.