In 13 patients, a second attempt changing puncture site was necessary, while 2 patients required conversion to a surgical approach because of fibrotic or collapsed vein. Mean operating time was 51 ...

Ahlmén et al. have tested an adhesive blood-sensing patch that alerts patients and health-care personnel to blood loss from the venous needle puncture site. The device was tested in 213 dialysis ...

Objective: To compare the use of vascular Doppler ultrasound with vein visualization and palpation ... these methods on the success of the first puncture attempt, catheter positioning, and time ...