Unilateral Laparoscopic Diathermy Adjusted to Ovarian Volume

KBC Split

Status: Completed

Conditions: PCOS

Treatments: Procedure: Unilateral laparoscopic drilling; Procedure: Bilateral laparoscopic drilling

Study type: Interventional

Funder types: Other

Identifiers

NCT01833949

KBC-2013-HR

Details and patient eligibility

About

The objective of our study was to compare the efficiency of the right ULOD using thermal doses adjusted to ovarian volume (60 J/cm3) with the BLOD method at constant dose and to assess treatment efficiency.

Full description

The study included 96 infertile, clomiphene citrate-resistant women with polycystic ovary syndrome (PCOS), who underwent either unilateral or bilateral laparoscopic diathermy at the Clinical Hospital Split, Croatia. PCOS was diagnosed following the Rotterdam consensus criteria. In the ULOD group, we treated the right ovary with thermal dose of 60 J applied per one cubic centimeter of ovarian. In the comparator, BLOD group, all patients received 600 J per ovary. The follow-up period encompassed six menstrual cycles for all subjects.Sample size was based on the test of the primary hypothesis that ULOD treatment would result in a higher ovulation rate than BLOD. In our pilot study in 61 patients, ovulation rates were estimated to 44% in the BLOD arm and 69% in the ULOD arm. Assuming 5% significance and 80% power, we calculated that the minimal sample size for a one-sided test had to be 96 patients.

The aims of our prospective study:

1. Compare the efficiency of the right ULOD using thermal doses adjusted to ovarian volume (60 J/cm3) with the BLOD method at constant dose and to assess treatment efficiency and predict ovulatory response based on clinical parameters (right or left ovary and its volume) and received thermal doses.
2. Evidence the effects of ULOD using thermal doses adjusted to ovarian volume on endocrine (changes in androgen and AMH) and reproductive outcomes (ovulation rate) in clomiphene-resistant women with PCOS.
3. To determine whether unilateral laparoscopic ovarian drilling (ULOD) using thermal doses adjusted to ovarian volume diminishes ovarian reserve less than bilateral LOD (BLOD) using a fixed thermal dose

Enrollment: 96 patients

Sex: Female

Ages: 25 to 35 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

PCOS was diagnosed following the Rotterdam consensus criteria

Inclusion Criteria:

• age between 25 and 35 years,
• BMI<30 kg/m2,
• infertility period 1-3 years,
• normal partner's semen findings,
• LH≥10 or LH:FSH ratio ≥2,
• testosterone >2.5 nmol/L,
• FAI>4,
• normal oral glucose tolerance test (OGTT).

Exclusion Criteria:

• adrenal hyperplasia,
• thyroid disease,
• Cushing's syndrome,
• hyperprolactinemia,
• tumor-related androgen excess

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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96 participants in 2 patient groups

ULOD arm (N=49)

Active Comparator group

Description:

Unilateral laparoscopic drilling In the ULOD group, we treated the right ovary.The thermal dose of 60 J applied per one cubic centimeter of ovarian volume was calculated from the mean total energy applied on a 10 cm3 ovary (627 J) from three earlier ULOD reports. Ovarian volume had been measured by ultrasound at baseline to determine the total thermal dose to apply on the right ovary. The number of punctures (Np) was also calculated for each patient according to the following formula: Np = 627 J / 30 W / 4 s Therefore, patients in the ULOD group differed in the number of punctures and energy received by the right ovary, depending on its volume.

Treatment:

Procedure: Unilateral laparoscopic drilling

BLOD arm (N=47)

Active Comparator group

Description:

Bilateral laparoscopic drilling In the comparator, BLOD group, all patients received 600 J per ovary (totaling 1200 J) through five punctures at 30 W for 4 s each (5 punctures x 4 s x 30 W = 600 J). The ovaries in both groups were cooled after the drilling by irrigating the abdominal cavity with 200-300 mL of physiological saline.

Treatment:

Procedure: Bilateral laparoscopic drilling