Objective: To determine the risk of cervical insufficiency (CI) in women with a history of a 2nd stage cesarean delivery (CD), and determine characteristics associated with CI with a prior CD.

Study Design: Case controlled study 1/2013 – 6/2016. ICD codes were used to identify cases with a history of CD, followed by CI in a subsequent pregnancy. Controls were patients who had a prior CD without CI. Parametric and non-parametric statistics were used; p value <0.05 was statistically significant.

Results: Of 2,000 charts, there were 15 cases (10 2nd stage, 5 1st stage). Women with a prior CD in the 2nd stage had higher odds of having CI compared to those who did not (OR 6.5 [CI 2.2-21.5], p<0.05).

Conclusion: Among those with CI, women with a prior 2nd stage cesarean delivery may be at greater risk of cervical insufficiency compared to those who do not.