General
Poor Fertilisation in IVF
Total fertilisation failure or <30% fertilisation despite adequate eggs and sperm suggests a defect in egg activation or sperm-egg interaction.
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Overview
Overview
Total fertilisation failure or <30% fertilisation despite adequate eggs and sperm suggests a defect in egg activation or sperm-egg interaction.
Symptoms
No or very few fertilised eggs after conventional IVF
Repeated low fertilisation rates
Causes
1
Zona pellucida hardening2
Oocyte activation failure3
Sperm factor activation defect4
Antisperm antibodiesHow It's Diagnosed
Strict semen analysis morphology
Sperm DNA fragmentation
ICSI trial in subsequent cycle
Oocyte maturity assessment
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