A4b4 Incorrect media Lack of training or Sample 4 2 2 16 training 4 1 2 8 preparation operator's contamination / negligence impaired embryo quality A4b5 Incorrect / absent error or Reduced 1 3 2 6 Witnessing 1 3 1 3 registration data negligence traceability / data loss A.5 Embryo A5a Patient A1a1 Patient mismatch Patient with Patient with 5 1 5 25 Ask for the name 5 1 1 5 transfer identification incorrect mismatch of directly to the identification transferred patient, the bracelet or incorrect embryos patient signs their labels own labels A5b Sample A5b1 Biological sample Petri dish exchange Patient with 5 1 5 25 Colour code and 5 1 1 5 identification mismatch due to human error mismatch of witnessing transferred embryos Embryo Embryo quality 2 2 2 8 Witnessing 2 2 1 4 identification mismatch (quality) A5c1 A5c Not Sample working or Technical failure Sample damage 2 3 1 6 Calibration and 2 2 1 4 uncalibrated processing equipment maintenance of all critical instruments A5c2 Defective Lack of training or Sample loss 2 3 2 12 Test the 2 3 1 6 equipment (pipette, operator's equipment before catheter or syringe not negligence use working) A5c3 Time and Lack of training or Sample damage 4 3 1 12 Staff training 4 2 1 8 conditions not operator's respected negligence
A4b4 Incorrect media preparation Lack of training or operator's negligence Sample contamination / impaired embryo quality 4 2 2 16 training 4 1 2 8 A4b5 Incorrect / absent registration data error or negligence Reduced traceability / data loss 1 3 2 6 Witnessing 1 3 1 3 A.5 Embryo transfer A5a Patient identification A1a1 Patient mismatch Patient with incorrect identification bracelet or incorrect labels Patient with mismatch of transferred embryos 5 1 5 25 Ask for the name directly to the patient, the patient signs their own labels 5 1 1 5 A5b Sample identification A5b1 Biological sample mismatch Petri dish exchange due to human error Patient with mismatch of transferred embryos 5 1 5 25 Colour code and witnessing 5 1 1 5 Embryo identification (quality) Embryo quality mismatch 2 2 2 8 Witnessing 2 2 1 4 A5c Sample processing A5c1 Not working or uncalibrated equipment Technical failure Sample damage 2 3 1 6 Calibration and maintenance of all critical instruments 2 2 1 4 A5c2 Defective equipment (pipette, catheter or syringe not working) Lack of training or operator's negligence Sample loss 2 3 2 12 Test the equipment before use 2 3 1 6 A5c3 Time and conditions not respected Lack of training or operator's negligence Sample damage 4 3 1 12 Staff training 4 2 1 8