What this card shows
The ICSI normal fertilization rate card shows what share of injected eggs fertilized normally, month by month. ICSI is intracytoplasmic sperm injection, where a single sperm is injected directly into an egg.
Normal fertilization is judged at the Day 1 check, roughly 17 hours after injection, by counting pronuclei (PN). A pronucleus is a visible nucleus in the newly fertilized egg, and two of them, 2PN, is the normal result: one from the egg and one from the sperm.
There are three lines:
2PN rate: your monthly rate.
Competency: the Vienna Consensus competency level, 65% or above.
Benchmark: the Vienna Consensus benchmark, 80% or above.
Reading the card
The denominator is all eggs linked to an ICSI fertilization in the window. Every injected egg is treated as a mature egg, since the protocol only injects mature ones.
The card covers standard ICSI along with the p-ICSI, d-ICSI and IMSI variants. Rescue ICSI is excluded, since it is a salvage procedure on eggs that already failed to fertilize and would not be a fair comparison.
The Competency and Benchmark lines are flat reference lines from the Vienna Consensus, not measurements from your lab.
Hover any point to see the exact figure.
Two definitional notes:
The strict Vienna definition also requires two polar bodies to be visible alongside the two pronuclei. Polar body counts are not reliably recorded, so this card uses the two-pronuclei observation on its own.
Strict Vienna scope is narrower than what is measured here. It excludes eggs matured in the lab, thawed eggs, and cycles using surgically retrieved sperm. Those exclusions are not applied, because the underlying records do not identify them, so a lab with a lot of surgical-sperm or in-vitro-matured work may read slightly lower here than against a strict comparator.
Only eggs that were actually graded on Day 1 can be counted as normal, so where the Day 1 check goes unrecorded this rate reads low for a recording reason rather than a clinical one. The Day 1 grading coverage gap card on the same tab tells you how much of that is happening.
The card lives on the Laboratory performance (Vienna consensus KPIs) dashboard, on the Fertilization Performance tab, and responds to the filters at the top:
Date: change the time window. It scopes by the date of fertilization, and defaults to the past 6 months plus the current month.
Clinic: focus on one or more locations, if your organization has several.
Treatment type, Clinician, Age at cycle start and BMI: narrow to a subset of cycles.
Where this data comes from
Both halves of this card come from the Culture tab of the patient's Cycle page: the injection is recorded as a fertilization event, and the Day 1 observation on each egg carries the pronuclei grading.
Recording the Day 1 check on every injected egg, including the ones that did not fertilize, is what makes this rate accurate.
Opening this card
In wawa, open Insights from the sidebar, then go to Standard Reports → Laboratory Performance → Laboratory performance (Vienna consensus KPIs). Select the Fertilization Performance tab. The ICSI normal fertilization rate card is on it.