A3b2 Defective Lack of training or Sample loss 2 3 2 12 Test the 2 3 1 6 equipment (denuding operator's equipment before and manipulation negligence use pipette) A3b3 Time and Lack of training or Sample damage 4 3 1 12 Staff training 4 2 1 8 conditions not operator's respected negligence A3b4 Incorrect media Lack of training or Sample 4 2 2 16 Staff training 4 1 2 8 preparation operator's contamination / negligence impaired oocyte quality A3b5 Incorrect/absent Human error or Reduced 1 3 2 6 Witnessing 1 3 1 3 registration data negligence traceability / data loss A.4 Embryo A4a Sample A4a1 Biological sample Incorrect labelling Embryo 5 1 5 25 Witnessing 5 1 1 5 identification mismatch due to human error mismatch culture A4b1 A4b 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 A4b2 Defective Lack of training or Sample loss 2 3 2 12 Test the pipette 2 3 1 6 equipment (denuding operator's before use and manipulation negligence pipette) A4b3 Incorrect Error of assessment Incorrect clinical 2 2 2 8 Witnessing - 2 1 1 2 assessment by laboratory staff choice check embryos before transfer
A3b2 Defective equipment (denuding and manipulation pipette) Lack of training or operator's negligence Sample loss 2 3 2 12 Test the equipment before use 2 3 1 6 A3b3 Time and conditions not respected Lack of training or operator's negligence Sample damage 4 3 1 12 Staff training 4 2 1 8 A3b4 Incorrect media preparation Lack of training or operator's negligence Sample contamination / impaired oocyte quality 4 2 2 16 Staff training 4 1 2 8 A3b5 Incorrect/absent registration data Human error or negligence Reduced traceability / data loss 1 3 2 6 Witnessing 1 3 1 3 A.4 Embryo culture A4a Sample identification A4a1 Biological sample mismatch Incorrect labelling due to human error Embryo mismatch 5 1 5 25 Witnessing 5 1 1 5 A4b Sample processing A4b1 Not working or uncalibrated equipment Technical failure Sample damage 2 3 1 6 Calibration and maintenance of all critical instruments 2 2 1 4 A4b2 Defective equipment (denuding and manipulation pipette) Lack of training or operator's negligence Sample loss 2 3 2 12 Test the pipette before use 2 3 1 6 A4b3 Incorrect assessment Error of assessment by laboratory staff Incorrect clinical choice 2 2 2 8 Witnessing - check embryos before transfer 2 1 1 2
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