Chapel Hill Tubal Reversal Center 109 Conner Drive Suite 2200, Chapel Hill, NC 27514 (919) 968-4656

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Tubal Reversal Study 2007 Report

Pregnancy Rates After Tubal Reversal At Chapel Hill Tubal Reversal Center

Notice of Study Update

The following is Dr. Berger's report from 2007. The corresponding page of an updated report can be seen in 2 expanded pages in the Tubal Reversal Pregnancy Study 2009 – Pregnancy Rates by Age and Tubal Ligation Method and Pregnancy Rates by Tubal Length

Pregnancy Rates By Age

As expected, younger women had higher pregnancy rates than older women. The pregnancy rate after surgery ranged from 82% for women under 30 to 41% for women 40 years of age and older (Table 3).

Pregnancy Rates By Tubal Ligation Method

Reversal of tubal ring or clip procedures had the highest pregnancy rate (76%), followed by ligation/resection (69%) and coagulation (68%). Patients with fimbriectomy or unknown methods of tubal ligation had the lowest pregnancy rate (56%).

Pregnancy Rates By Age And Method

Pregnancy rates taking into account both age and tubal ligation method are shown in Table 5. The highest pregnancy rate (87%) was reported by women age 29 or less who underwent reversal of a previous ring or clip method of sterilization. The lowest pregnancy rate (31%) was for women age 40 and older with either a fimbriectomy or unknown method of tubal ligation. Of the two variables, age is more predictive than tubal ligation method of the likelihood of becoming pregnant after reversal surgery.

Pregnancy Rates By Fallopian Tube Length

The fallopian tube lengths remaining after a tubal ligation procedure are important determinants of the success of tubal reversal surgery. (Normal fallopian tube length before a tubal ligation is approximately 10 cm or 4 inches.)

Tubal segment lengths were measured by Dr. Berger during surgery. The average length of the two fallopian tubes after repair was correlated with the likelihood of becoming pregnant (Table 6). Women with longer average tubal lengths had significantly higher pregnancy rates than women with shorter lengths following tubal reversal. Women with tubal lengths 7.5 cm or longer had a pregnancy rate of 80%. The pregnancy rate declined as tubal length decreased, but even women with the shortest tubes (less than 2.5 cm) became pregnant (38%).  Although previously unreported in the medical literature, it became apparent during this study that a repaired fallopian tube of any length can result in pregnancy based on reports by women with only 1 fallopian tube.  Tubal lengths as short as 1 cm have resulted in normal pregnancies among the women in this study.

Age And Tubal Length

When age and average tubal lengths are taken into account simultaneously, both factors are important predictors of outcome in terms of pregnancy (Table 7). Pregnancy rates were over 80% for women under 40 who had tubal lengths of 7.5 cm or longer.

Tubal Reversal Pregnancy Study Report 2007
Table Of Contents:

• Summary and Introduction
• Study Method
• Patient Population
• Tubal Reversal Pregnancy Rates (this page)
• Pregnancy Outcomes
• Tubal Reversal vs. IVF
• About Pregnancy Statistics

Pregnancy Outcomes After Tubal Reversal and IVF

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