Facts & Figures · Review / Edit

Amniocentesis and chorionic villus sampling – key figures

Record #4 · Edit the content, source and classification relationships.

PreviousNext

SQL status stored

Candidate visibility Not candidate-visible

Classifications 1

Facts & Figures #4 — Edit

Title

Content

Additional procedure-related miscarriage risk after amniocentesis or CVS by a skilled operator is likely <0.5%.
Amniocentesis should be performed from 15+0 weeks; CVS should not be performed before 10+0 weeks and, where possible, should be performed from 11+0 weeks.
In twin pregnancy, the additional miscarriage risk following CVS or amniocentesis is approximately 1%.
Confined placental mosaicism occurs in approximately 1–2% of CVS samples.
Maternal cell contamination occurs in approximately 1–2% of CVS and amniocentesis samples.
Repeat sampling may be required in up to 6% following either procedure; rapid test failure is approximately 2%.
Failed culture is approximately 0.5–1% overall; the RCOG audit standard is <0.5%.
Operators should ideally perform or supervise at least 20 invasive procedures annually.
Third-trimester amniocentesis: preterm labour before 34 weeks is approximately 3–4%; culture failure increases with advancing gestation and was 10.2% overall in one cited database.
For maternal hepatitis B, transmission risk is low below approximately 6.99 log10 copies/mL and increases at higher viral loads.

Status

Currently stored

stored

Status control does not offer the stored value. This record is stored as stored, but this legacy control only offers generated / needs_review / approved / retired. Saving this form will submit the selected value shown above (currently generated) and replace stored.

This is a known backend issue reported separately; it has not been changed in this visual redesign.

Source

Section

Locator

Notes

Back to list

Classification Relationships — through Subtopic3

1 assigned

Obstetrics and Gynaecology→ Clinical→ Feto-maternal medicine→ Perinatology→ Diagnosis→ Invasive→ Complications

Amniocentesis and chorionic villus sampling – key figures

Facts & Figures #4 — Edit

Source

Classification Relationships — through Subtopic3

Related Questions (2)