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Table 3 Ovarian stimulation and embryological data for the high risk patients who injected hCG (n = 353) and either developed (n = 40) or did not develop severe OHSS (n = 313)

From: Outpatient management of severe early OHSS by administration of GnRH antagonist in the luteal phase: an observational cohort study

 

N = 313 patients without severe OHSS

N = 40 patients with severe OHSS

p

Long protocol (n)

111

16

 

Antagonist protocol (n)

202

24

 

Duration of stimulation (days)

10.9 ± 1.5

10.6 ± 1.4

0.220

Total FSH (IU)

1909 ± 636

1890 ± 740

0.014

Number of follicles on day of hCG

29.0 ± 4.4

33.8 ± 7.0

<0.001

Oestradiol on day of hCG (pg/ml)

2956 ± 1289

3687 ± 1450

<0.001

Progesterone on day of hCG (ng/ml)

0.99 ± 0.44

1.1 ± 0.46

0.183

Number of oocytes retrieved

24.1 ± 6.1

32.0 ± 11.0

<0.001

Mature oocytes (in ICSI patients)

14.8 ± 6.6

20.7 ± 12.7

<0.001

Type of fertilization (IVF/ICSI/ IVF + ICSI)

72/160 /81

13/15/12

0.236

Number of 2PN

13.5 ± 10.3

18.4 ± 9.1

<0.001

Number of embryo transfers performed

303

  

Day of embryo transfer (Day3/Day5)

131/172

  

Number of embryos transferred

2.7 ± 0.6

  
  1. Values are expressed as mean ± standard deviation (SD) unless otherwise stated. P-values in bold depict statistical significance (p < 0.05).