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Table 1 Results of laparoscopic ovarian drilling in PCOS patients

From: Laparoscopic ovarian drilling (LOD) in patients with polycystic ovary syndrome (PCOS): an alternative approach to medical treatment?

Author

Study design

No. of patients

Ovulation rate

Pregnancy rate spontaneous

Live birth rate

No. of holes

Technique

Gjönnaess [16]

Prospective uncontrolled

62

92%

69%

n.a.

3–8

Unipolar electrocautery, 200–300 W

Abdel Gadir et al. [19]

Randomised LOD versus HMG versus FSH

29

71.4%

34.5%

27.5%

 

Unipolar electrocautery

Keckstein et al. [20]

Prospective uncontrolled

19 CO2 laser

71.4%

36.8%

n.a.

10–30

CO2: 20–30 W continuous mode

11 Nd:YAG

55%

27.2%

  

Nd:YAG: 45–70 W defocussed laser beam

Armar et al. [21]

Prospective uncontrolled

21

80.9%

52.3%

38.1%

4–8

Unipolar diathermy

Kovacs et al. [22]

Prospective uncontrolled

10

70%

30%

20%

10

Unipolar electrocautery

Gürgan et al. [23]

Prospective uncontrolled

7 electrocautery

71%

57%

n.a

20–30

Unipolar electrocautery 70 W

10 Nd:YAG

70%

40%

 

20–25

Nd:YAG laser 30–60 W

Gürgan et al. [24]

Prospective uncontrolled

40

70%

50%

45%

20–25

Nd:YAG laser 50 W

Armar and Lachelin [25]

Prospective uncontrolled

50

86%

66%

n.a. after LOD only

4

Unipolar diathermy

Greenblatt und Casper [26]

Prospective uncontrolled

8

100%

87.5%

62.5%

8–10

Unipolar cautery

Naether et al. [27]

Prospective uncontrolled

133

55%

43%

34.5%

5–20

Unipolar electrocautery 400 W/s

Balen and Jacobs [28]

Randomised controlled

4 unilateral

75%

0

0

4

Unipolar diathermy 40 W

6 bilateral

33%

    

Heylen et al. [29]

Prospective two-laser techniques

22 vaporisation

82%

55% (total)

47.2% incl. clomiphene

15–40

Argon, continuous 8–12 W

22 perforation

77.3%

72.7% (total incl. clomiphene)

   

Liguori et al. [30]

Prospective uncontrolled

97

90%

81%

n.d.

5–20

Unipolar electrocautery 4 mA

Lazovic et al. [31]

Randomised crossover

28 LOD

75%

29%

–

n.a.

Unipolar diathermy and CO2 laser

28 low-dose FSH

 

60%

   

Vegetti [32]

Prospective, randomised

16 LOD

81.2%

25%

12.5%

20

Electrocauterisation

13 low-dose FSH

84%

38%

30.7%

  

Muenstermann and Kleinstein [33]

Prospective randomised

10 LOD

70%

50%

36%

10–30

CO2 laser 105 W/cm2

8 GnRH-a followed by FSH

67%

63%

29%

  

Felemban et al. [34]

Retrospective

112

73.2%

72% (cumulative probability after 24 months)

–

10–15

Unipolar electrocautery 40 W

Zullo et al. [35]

Randomised controlled

32 minilaparoscopy

81.2%

65.6%

59.3%

10–15

Unipolar electrocautery

30 standard

86.6%

60.0%

56.6%

  

Kriplani et al. [36]

Prospective uncontrolled

66

81.8%

54.5%

n.a.

n.a.

Monopolar diathermy

Fernandez et al. [37]

Prospective uncontrolled

13

46.2%

23.1%

23.1%

10–15

Transvaginal hydrolaparoscopy bipolar versapoint device

Amer et al. [38]

Retrospective longitudinal follow-up

116 LOD

n.a.

61%

56%

3–10 (diathermy)

Electric diathermy 30 W

34 control

   

10–40 (laser)

Argon laser 12–14 W continuous mode

Farquhar et al. [39]

Prospective randomised

28 LOD

54%

28.6%

21.2%

10

Monopolar electrocautery

19 patients 3 cycles HMG/FSH

81% per cycle

    

Takeuchi et al. [40]

Prospective randomised

17 harmonic laser

94%

77%

n.a.

n.a.

Harmonic scalpel laser

17 Nd:YAG

94%

60%

  

Neodyn YAG laser

Casa et al. [41]

Prospective

28

66.7%

76% (cumulative after 6 months)

76%

n.a.

Transvaginal hydrolaparoscopy bipolar versa spring electrode

Malkawi et al. [42]

Prospective

64 metformin

79.7%

64.1%

n.a.

n.a.

n.a.

97 LOD

83.5%

59.8%

   

Bayram et al. [43]

Randomised controlled trial

83 LOD

63%

37%

34%

5–10

Bipolar needle electrode

85 FSH

     

Fernandez et al. [44]

Prospective

80

91%

39.7% (drilling alone) 60% (incl. stimulation)

35.6% (total incl. stimulation)

10–15

Transvaginal, coaxial bipolar

Palomba et al. [45]

Prospective randomised

54 metformin

54.8%

18.6%

59%

3–6

Monopolar 40 W

55 LOD

53.3% per cycle

13.4% per cycle

36% per patients

  
  1. HMG, human menopausal gonadotropin
  2. GnRH, gonadotropin-releasing hormone