Chorionic villus sampling and preeclampsia & eclampsia: coincidence or not?

Area of Science:

• Obstetrics and Gynecology
• Perinatal Medicine
• Maternal-Fetal Medicine

Background:

• Preeclampsia (PE) and eclampsia (E) are serious pregnancy complications.
• Invasive prenatal diagnostic procedures, such as chorionic villus sampling (CVS), are sometimes used during pregnancy.
• The potential association between CVS and the development of PE and E requires investigation.

Purpose of the Study:

• To investigate the potential association between chorionic villus sampling (CVS) and the subsequent development of preeclampsia (PE) and eclampsia (E).
• To compare the incidence of PE and E in women who underwent CVS versus a control group.

Main Methods:

• A comparative study design was employed, involving a CVS group (n=228) and a matched control group (n=456) without invasive procedures.
• Maternal and gestational age were matched between the two groups.
• Main outcome measures included the incidence of mild and severe PE, and E.

Main Results:

• The incidence of PE and E was not significantly different between the CVS group and the control group.
• No significant difference was observed in the development of mild or severe PE between the groups.
• The incidence of early- and late-onset PE was similar in both the CVS and control groups.

Conclusions:

• Chorionic villus sampling (CVS) does not appear to elevate the risk of developing preeclampsia (PE) or eclampsia (E).
• The findings suggest that spontaneous increases in trophoblastic load may be more implicated in PE/E development than iatrogenic elevation from CVS.