Maîtrise des non-conformités de la phase pré-analytique au Laboratoire de Bactériologie du CHU Ibn Sina à Rabat(Maroc)

Introduction: The errors in the pre-analytic phase are at the origin of 60 to 85% of the errors in the results proceeded from laboratory. Aim: To evaluate the impact of the pre-analytical phase on the received bacteriology samples received at the medical bacteriology laboratory of Ibn Sina UH in Rabat Morocco in order to propose corrective actions. Methods: A descriptive and quantitative study of the non-conformities of the pre-analytical phase identified in the central laboratory of medical bacteriology of the Ibn Sina hospital in Rabat over a period of 6 months (from January 01 to July 01, 2020). It concerned samples from various clinical services and care units of Ibn Sina Hospital, as well as external samples. In order to act on these various dysfunctions, we used quality tools such as the Pareto chart and from Ishikawa. Results: We counted 424 cases of pre-analytical NC on 14468 samples received to the Central Laboratory of Bacteriology or 2.93%. These are mainly errors of sample identification and patient identity (59.66%), quality and quantity of samples (25.02%) and problem of conditions of transport and packaging (15.32%). Conclusion: Its mastery requires firstly, a close collaboration between the various services, prescribers, samplers and biologists and secondly the respect of each stage of this phase by the hospital staff.