Sample size {14}
COMPLICATION, COMPLICATIONS
This is a comparative, prospective, multicenter evaluation study taking place in 8 centers. The population is made up of all nurses performing hemodialysis punctures. We expect a reduction of at least 50% of the complications related to the puncture in the experimental group compared to the control group (possible result following the first pilot feasibility study, monocentric, prospective, observational, before/after, SIMFAV (RCT03680209) carried out at the University Hospital of Caen Normandy). To show a significant difference at T8, a minimum of 1 complication per day (the least favorable condition for confirming our hypothesis) was considered, i.e., over 4 weeks and for 8 centers, 224 complications in the control group, or 9.3%. For a reduction of at least 50% (4.65%), a risk The same number of 4800 punctures for the T5 period (baseline) is also used. This means a total of 9600 punctures over the study period.Several levels are taken into consideration: center, nurse, patient, and AVF puncture. Within a single center, the overall reflection of activity is related to history, practices, schedules, recommendations, etc. This center-specific activity may differ from one center to another. The experience of the nurses led to the same effects from one center to another, such as the characteristics of the patients and the AVF. These different points are taken into consideration to look for possible differences and effects that could be the cause of confounding factors.In total, 8 centers participated, with 600 pretraining punctures per center and 600 posttraining punctures per center; that is, 9600 punctures were observed.