Related Experiment Video
Updated: Mar 22, 2026

Isolation and Characterization of Human Umbilical Cord-derived Mesenchymal Stem Cells from Preterm and Term Infants
Published on: January 26, 2019
New Treatment for Percutaneous Sites in Patients with a Ventricular Assist Device: Nihon University Crystal Violet
Akira Sezai1, Tetsuya Niino, Shunji Osaka
1The Department of Cardiovascular Surgery, Nihon University School of Medicine, Tokyo, Japan.
Background:
Infection of the percutaneous site of a ventricular assist device (VAD) is a challenging complication. We report our experience with crystal violet Solbase (Nihon University crystal violet method) for prevention of driveline or cannula infections in VAD patients.
Patients And Methods:
The crystal violet method was used in 10 patients (prophylaxis in nine and treatment in one). Eight patients had an extracorporeal VAD (Nipro) and two had an implantable VAD (Heart Mate II).
Results:
The infection-free period was 4-623 days (mean: 144.2 ± 222.9 days). All eight patients with an extracorporeal VAD died, while the two patients with an implantable VAD (Heart Mate II) survived. Infection was improved in a patient with MRSA, and the results of bacteriological examination were always negative in the patients receiving prophylaxis. The two patients with an implantable VAD had no infection for 2 and 20 months after implantation.
Conclusion:
These findings suggest that the Nihon University crystal violet method is effective for prevention and treatment of driveline or cannula infections in patients with a VAD.

