E H Ng

Summary

Affiliation: University of Hong Kong
Country: China

Publications

  1. doi request reprint The role of acupuncture in the management of subfertility
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Fertil Steril 90:1-13. 2008
  2. ncbi request reprint Changes in endometrial and subendometrial blood flow in IVF
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Reprod Biomed Online 18:269-75. 2009
  3. ncbi request reprint The significance of antral follicle count in controlled ovarian stimulation and intrauterine insemination
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    J Assist Reprod Genet 22:323-8. 2005
  4. ncbi request reprint Are there differences in ultrasound parameters between Chinese women with polycystic ovaries only and with polycystic ovary syndrome?
    Ernest H Y Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
    Eur J Obstet Gynecol Reprod Biol 125:92-8. 2006
  5. ncbi request reprint Ovarian stromal blood flow in the prediction of ovarian response during in vitro fertilization treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:3147-51. 2005
  6. ncbi request reprint Comparison of ovarian stromal blood flow between fertile women with normal ovaries and infertile women with polycystic ovary syndrome
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:1881-6. 2005
  7. ncbi request reprint Antral follicle count and FSH concentration after clomiphene citrate challenge test in the prediction of ovarian response during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:1647-54. 2005
  8. ncbi request reprint A randomized double-blind controlled study of the efficacy of laser-assisted hatching on implantation and pregnancy rates of frozen-thawed embryo transfer at the cleavage stage
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:979-85. 2005
  9. ncbi request reprint Endometrial and subendometrial blood flow measured by three-dimensional power Doppler ultrasound in patients with small intramural uterine fibroids during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:501-6. 2005
  10. ncbi request reprint The role of endometrial and subendometrial blood flows measured by three-dimensional power Doppler ultrasound in the prediction of pregnancy during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 21:164-70. 2006

Collaborators

Detail Information

Publications80

  1. doi request reprint The role of acupuncture in the management of subfertility
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Fertil Steril 90:1-13. 2008
    ..To review systematically the use of acupuncture in the management of subfertility...
  2. ncbi request reprint Changes in endometrial and subendometrial blood flow in IVF
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Reprod Biomed Online 18:269-75. 2009
    ....
  3. ncbi request reprint The significance of antral follicle count in controlled ovarian stimulation and intrauterine insemination
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    J Assist Reprod Genet 22:323-8. 2005
    ..This retrospective study evaluated the role of antral follicle count (AFC) in predicting ovarian response and successful outcome of stimulated insemination cycles...
  4. ncbi request reprint Are there differences in ultrasound parameters between Chinese women with polycystic ovaries only and with polycystic ovary syndrome?
    Ernest H Y Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
    Eur J Obstet Gynecol Reprod Biol 125:92-8. 2006
    ....
  5. ncbi request reprint Ovarian stromal blood flow in the prediction of ovarian response during in vitro fertilization treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:3147-51. 2005
    ..Patients were aged <40 years with basal FSH <10 IU/l on recruitment for IVF treatment...
  6. ncbi request reprint Comparison of ovarian stromal blood flow between fertile women with normal ovaries and infertile women with polycystic ovary syndrome
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:1881-6. 2005
    ..We compared the ovarian stromal blood flow and serum vascular endothelial growth factor (VEGF) concentration between fertile women with normal ovaries and infertile women with PCOS...
  7. ncbi request reprint Antral follicle count and FSH concentration after clomiphene citrate challenge test in the prediction of ovarian response during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:1647-54. 2005
    ....
  8. ncbi request reprint A randomized double-blind controlled study of the efficacy of laser-assisted hatching on implantation and pregnancy rates of frozen-thawed embryo transfer at the cleavage stage
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:979-85. 2005
    ..Little information exists in the literature regarding the role of AH in frozen-thawed embryo transfer (FET) cycles...
  9. ncbi request reprint Endometrial and subendometrial blood flow measured by three-dimensional power Doppler ultrasound in patients with small intramural uterine fibroids during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 20:501-6. 2005
    ..We compared endometrial and subendometrial blood flow between women with and without intramural fibroids during IVF treatment...
  10. ncbi request reprint The role of endometrial and subendometrial blood flows measured by three-dimensional power Doppler ultrasound in the prediction of pregnancy during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 21:164-70. 2006
    ..We aimed to evaluate the role of endometrial and subendometrial blood flows in the prediction of pregnancy during IVF treatment...
  11. ncbi request reprint Effect of pituitary downregulation on antral follicle count, ovarian volume and stromal blood flow measured by three-dimensional ultrasound with power Doppler prior to ovarian stimulation
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 19:2811-5. 2004
    ..The aim of this prospective study was to compare antral follicle count (AFC), ovarian volume and ovarian stromal blood flow measured by three-dimensional (3D) power Doppler ultrasound before and after pituitary downregulation...
  12. ncbi request reprint Comparison of endometrial and subendometrial blood flow measured by three-dimensional power Doppler ultrasound between stimulated and natural cycles in the same patients
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 19:2385-90. 2004
    ..Low implantation rates in stimulated IVF cycles may be related to suboptimal endometrial perfusion. Endometrial and subendometrial blood flow was compared between stimulated and natural cycles in the same patients undergoing IVF...
  13. ncbi request reprint Effect of age on ovarian stromal flow measured by three-dimensional ultrasound with power Doppler in Chinese women with proven fertility
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 19:2132-7. 2004
    ..However, little information exists in the literature regarding the effect of age on the ovarian stromal blood flow in fertile women...
  14. ncbi request reprint Concentrations of endometrial protein PP 14 and CA-125 in uterine flushings performed in natural and stimulated cycles
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 19:905-10. 2004
    ..This study compared concentrations of endometrial proteins in uterine flushings of infertile patients between natural and stimulated cycles...
  15. ncbi request reprint A randomised comparison of side effects and patient inconvenience of two vaginal progesterone formulations used for luteal support in in vitro fertilisation cycles
    Ernest H Y Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, Hong Kong, PR China
    Eur J Obstet Gynecol Reprod Biol 111:50-4. 2003
    ..To compare side effects and patient inconvenience of two vaginal progesterone (P) formulations for luteal support in in vitro fertilisation cycles...
  16. ncbi request reprint Factors affecting endometrial and subendometrial blood flow measured by three-dimensional power Doppler ultrasound during IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 21:1062-9. 2006
    ..No information exists in the literature regarding the factors affecting the blood flow towards the endometrial and subendometrial regions during IVF treatment...
  17. ncbi request reprint The role of endometrial and subendometrial vascularity measured by three-dimensional power Doppler ultrasound in the prediction of pregnancy during frozen-thawed embryo transfer cycles
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
    Hum Reprod 21:1612-7. 2006
    ..A good blood supply to the endometrium is usually considered as an essential requirement for implantation...
  18. ncbi request reprint Endometrial and subendometrial vascularity are significantly lower in patients with endometrial volume 2.5 ml or less
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Reprod Biomed Online 18:262-8. 2009
    ..In conclusion, endometrial and subendometrial vascularity measured by 3D power Doppler ultrasound was significantly lower (P <or= 0.003) in patients with low volume endometrium, but not in those with thin endometrium...
  19. doi request reprint Polycystic ovary syndrome in asian women
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Semin Reprod Med 26:14-21. 2008
    ..It is important to take into consideration the ethnic background of patients in future studies related to PCOS...
  20. ncbi request reprint Randomized double-blind comparison of laser zona pellucida thinning and breaching in frozen-thawed embryo transfer at the cleavage stage
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Fertil Steril 89:1147-53. 2008
    ..To compare the implantation and ongoing pregnancy rates of frozen-thawed embryo transfer (FET) using laser thinning with those of laser breaching of the zona pellucida (ZP)...
  21. ncbi request reprint The role of endometrial blood flow measured by three-dimensional power Doppler ultrasound in the prediction of pregnancy during in vitro fertilization treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
    Eur J Obstet Gynecol Reprod Biol 135:8-16. 2007
    ....
  22. ncbi request reprint Comparison of 2-dimensional, 3-dimensional, and vascular ultrasonographic parameters for endometrial receptivity between 2 consecutive stimulated in vitro fertilization cycles
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynecology, The University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong
    J Ultrasound Med 26:931-9. 2007
    ..We compared the ultrasonographic parameters for endometrial receptivity between 2 consecutive in vitro fertilization (IVF) cycles in the same patients...
  23. ncbi request reprint Endometrial and subendometrial vascularity is higher in pregnant patients with livebirth following ART than in those who suffer a miscarriage
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 22:1134-41. 2007
    ..Blood flow towards the peri-implantation endometrium may have effects on miscarriage and live birth following assisted reproduction treatment, in addition to its role in implantation...
  24. ncbi request reprint Ageing and ART: a waste of time and money?
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Best Pract Res Clin Obstet Gynaecol 21:5-20. 2007
    ..It is important to identify the predictive factors associated with a better treatment outcome...
  25. ncbi request reprint A randomized comparison of side effects and patient convenience between Cyclogest suppositories and Endometrin tablets used for luteal phase support in IVF treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Eur J Obstet Gynecol Reprod Biol 131:182-8. 2007
    ....
  26. ncbi request reprint Comparison of endometrial and subendometrial blood flows among patients with and without hydrosalpinx shown on scanning during in vitro fertilization treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Fertil Steril 85:333-8. 2006
    ..To compare endometrial and subendometrial blood flows among patients with and without hydrosalpinx (HSP) during in vitro fertilization treatment as measured by a three-dimensional power Doppler ultrasound...
  27. ncbi request reprint Patients with three or less dominant follicles may not be associated with reduced pregnancy rate of in vitro fertilization treatment
    Ernest H Y Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
    Eur J Obstet Gynecol Reprod Biol 129:54-9. 2006
    ..This study compared implantation and pregnancy rates among women who developed <or=3 dominant follicles of >or=16 mm in diameter and those who had >3 dominant follicles after ovarian stimulation...
  28. ncbi request reprint Relationship between uterine blood flow and endometrial and subendometrial blood flows during stimulated and natural cycles
    Ernest H Y Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Fertil Steril 85:721-7. 2006
    ..To evaluate the relationship between uterine Doppler flow and endometrial and subendometrial blood flows during stimulated and natural cycles...
  29. ncbi request reprint Ovarian stromal vascularity is not predictive of ovarian response and pregnancy
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Reprod Biomed Online 12:43-9. 2006
    ..Ovarian 3D power Doppler flow indices measured after pituitary down-regulation were not predictive of the ovarian response and pregnancy in the IVF treatment...
  30. ncbi request reprint A randomized comparison of three insemination methods in an artificial insemination program using husbands' semen
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    J Reprod Med 48:542-6. 2003
    ..To compare pregnancy rates with single intrauterine insemination (SIUI), double intrauterine insemination (DIUI) and fallopian tube sperm perfusion (FSP)...
  31. pmc Regulating reproductive technology in Hong Kong
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong
    J Assist Reprod Genet 20:281-6. 2003
  32. ncbi request reprint Testicular sperm extraction and intracytoplasmic sperm injection in non-obstructive azoospermia
    H Y Ng
    Department of Obstetrics and Gynaecology, University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong, China
    Chin Med J (Engl) 113:246-50. 2000
    ..To report the experience in sperm extraction from testicular biopsies (TESE) performed from March 1996 to July 1998 in men with non-obstructive azoospermia (NOA)...
  33. ncbi request reprint Doppler ultrasound examination of uterine arteries on the day of oocyte retrieval in patients with uterine fibroids undergoing IVF
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam Road, Hong Kong, People s Republic of China
    Hum Reprod 17:765-70. 2002
    ..This prospective study compared implantation/pregnancy rates of women with and without fibroids undergoing IVF-embryo transfer and measured uterine blood flow indices of the fibroid group...
  34. ncbi request reprint A rapid decline in serum oestradiol concentrations around the mid-luteal phase had no adverse effect on outcome in 763 assisted reproduction cycles
    E Hung Yu Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 15:1903-8. 2000
    ..0 and >5.0. This difference did not reach statistical significance. Our results could not find an adverse outcome in cycles showing a rapid decline in oestradiol during the mid-luteal phase...
  35. ncbi request reprint Comparison of two different doses of lignocaine used in paracervical block during oocyte collection in an IVF programme
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 15:2148-51. 2000
    ..6) and 14.0 (2.5th-97.5th centiles: 0-99.1). These pain levels during egg collection were not significantly different between the two groups. The use of 200 mg lignocaine in PCB is not justified, even in the absence of toxic effects...
  36. ncbi request reprint The significance of the number of antral follicles prior to stimulation in predicting ovarian responses in an IVF programme
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 15:1937-42. 2000
    ....
  37. pmc A randomized double-blind study to compare the effectiveness of three different doses of lignocaine used in paracervical block during oocyte retrieval
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynecology, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    J Assist Reprod Genet 20:8-12. 2003
    ..Pain levels were measured by a 100-mm linear visual analogue scale (0 = none to 100 = intolerable)...
  38. pmc Oocyte and embryo quality in patients with excessive ovarian response during in vitro fertilization treatment
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    J Assist Reprod Genet 20:186-91. 2003
    ..This study examined oocyte and embryo quality in patients having excessive ovarian responses during assisted reproduction treatment...
  39. ncbi request reprint Effects of metformin on ovulation rate, hormonal and metabolic profiles in women with clomiphene-resistant polycystic ovaries: a randomized, double-blinded placebo-controlled trial
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 16:1625-31. 2001
    ..There are, however, very few studies evaluating metformin treatment in women with clomiphene citrate (CC)-resistant polycystic ovaries (PCO)...
  40. ncbi request reprint Paracervical block with and without conscious sedation: a comparison of the pain levels during egg collection and the postoperative side effects
    E H Ng
    Department of Obstetrics and Gynecology, Queen Mary Hospital, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Fertil Steril 75:711-7. 2001
    ..To compare the pain levels during egg collection and the subsequent postoperative side effects in patients receiving a paracervical block (PCB) with and without conscious sedation...
  41. ncbi request reprint Measurement of serum CA-125 concentrations does not improve the value of Chlamydia trachomatis antibody in predicting tubal pathology at laparoscopy
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 16:775-9. 2001
    ..The discriminative capacity of CAT in the diagnosis of tubal pathology including both proximal and distal obstruction was not improved by measuring serum CA-125, regardless of the threshold values of serum CA-125 concentration...
  42. ncbi request reprint In vitro fertilization and embryo transfer during natural cycles
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    J Reprod Med 46:95-9. 2001
    ..To report the results of in vitro fertilization and embryo transfer (IVF/ET) performed during natural cycles...
  43. ncbi request reprint Colour Doppler analysis of peri-implantation utero-ovarian haemodynamics in women with excessively high oestradiol concentrations after ovarian stimulation
    G S Basir
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong
    Hum Reprod 16:2114-7. 2001
    ..CONCLUSION: Despite low uterine PI and RI, the endometrial blood flow in high responders appears to be impaired. This may contribute to the decline in implantation efficiency noted in high responders...
  44. ncbi request reprint Morphometric analysis of peri-implantation endometrium in patients having excessively high oestradiol concentrations after ovarian stimulation
    G S Basir
    Department of Obstetrics and Gynaecology, 6/ F Professorial Block, Queen Mary Hospital, PokfulamRoad, Hong Kong
    Hum Reprod 16:435-40. 2001
    ..This substantiates our previous clinical observation of significantly lower pregnancy rates in IVF cycles of women with high oestradiol concentrations (> or =20,000 pmol/l)...
  45. ncbi request reprint Endometrial and subendometrial blood flow measured during early luteal phase by three-dimensional power Doppler ultrasound in excessive ovarian responders
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong, People s Republic of China
    Hum Reprod 19:924-31. 2004
    ..Endometrial and subendometrial blood flow were compared between excessive responders (serum E(2) on the day of HCG >20 000 pmol/l) and moderate responders (E(2) < or =20 000 pmol/l)...
  46. ncbi request reprint Cycle-to-cycle variation in utero-ovarian hemodynamic indices in ovarian stimulation and natural cycles of the same women and its effect on the outcome of assisted reproduction treatment
    Ghazala Sikandar Basir
    Department of Obstetrics and Gynecology, Queen Mary Hospital, University of Hong Kong, Pokfulam, Hong Kong
    Fertil Steril 78:1055-60. 2002
    ..To investigate the blood flow parameters between cycles of the same women to assess whether parameters predicting a successful pregnancy in a stimulation cycle could be used to determine the outcome of subsequent natural cycles...
  47. doi request reprint Ovarian stromal blood flow following clomiphene citrate challenge test in infertile women
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, 6 F, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong, People s Republic of China
    J Clin Ultrasound 36:403-8. 2008
    ..To compare ovarian stromal blood flow indices in the follicular phase and after clomiphene citrate (CC) in infertile women...
  48. ncbi request reprint HMG is as good as recombinant human FSH in terms of oocyte and embryo quality: a prospective randomized trial
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People's Republic of China
    Hum Reprod 16:319-25. 2001
    ..The percentage of metaphase II oocytes in the HMG and rhFSH groups were similar (86.9 versus 87.4% respectively). All other parameters assessing oocyte and embryo quality were also comparable between the two groups...
  49. ncbi request reprint Ultrasound-guided embryo transfer: a prospective randomized controlled trial
    O S Tang
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
    Hum Reprod 16:2310-5. 2001
    ..Recent reports suggested that ultrasound guidance during embryo transfer might improve the pregnancy rate...
  50. ncbi request reprint Endometrial, subendometrial, and ovarian stromal blood flow in patients treated with two different doses of recombinant human chorionic gonadotropin
    Carina Chi Wai Chan
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, People s Republic of China
    Fertil Steril 85:520-2. 2006
    ..There were no differences in all the indices of endometrial, subendometrial, and ovarian stromal blood flow in women who had received 250 microg or 500 microg of recombinant hCG for final oocyte maturation...
  51. ncbi request reprint The significance of the ionophore-challenged acrosome reaction in the prediction of successful outcome of controlled ovarian stimulation and intrauterine insemination
    Guneet Makkar
    Department of Obstetrics and Gynecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 18:534-9. 2003
    ....
  52. ncbi request reprint A randomized double-blind comparison of perifollicular vascularity and endometrial receptivity in ovulatory women taking clomiphene citrate at two different times
    Wai Cheung
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 17:2881-4. 2002
    ..This study aimed to compare the perifollicular vascularity and endometrial receptivity of ovulatory women who started clomiphene citrate on day 2 and day 5...
  53. ncbi request reprint Maternal serum pregnancy-associated plasma protein-A and free beta-human chorionic gonadotrophin in pregnancies conceived with fresh and frozen-thawed embryos from in vitro fertilization and intracytoplasmic sperm injection
    Pui Wah Hui
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, Hong Kong
    Prenat Diagn 25:390-3. 2005
    ..We investigated the effect of intracytoplasmic sperm injection (ICSI), freezing and thawing of embryos on the levels of these two analytes in assisted reproduction pregnancies...
  54. ncbi request reprint Perifollicular vascularity in poor ovarian responders during IVF
    Anita Kan
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, People s Republic of China
    Hum Reprod 21:1539-44. 2006
    ..This study evaluated the significance of perifollicular vascularity and follicular fluid hormonal profile in poor responders who developed < or = 3 dominant follicles...
  55. doi request reprint A randomized double blind comparison of real and placebo acupuncture in IVF treatment
    Emily Wing Sze So
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, Pokfulam Road, Hong Kong, People s Republic of China
    Hum Reprod 24:341-8. 2009
    ..This randomized double blind study aimed to compare real acupuncture with placebo acupuncture in patients undergoing IVF treatment...
  56. doi request reprint Excessive ovarian response is associated with increased expression of interleukin-2 in the periimplantation endometrium
    Guneet Makkar
    Department of Obstetrics and Gynecology, The University of Hong Kong, Hong Kong, People s Republic of China
    Fertil Steril 91:1145-51. 2009
    ..To evaluate and compare in vivo expression of T helper type 1 (Th1) cytokines in the peri-implantation endometrium of infertile patients between natural and stimulated cycles...
  57. ncbi request reprint Cortical vein thrombosis misinterpreted as intracranial haemorrhage in severe ovarian hyperstimulation syndrome: case report
    O S Tang
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital and Department of Radiology, Queen Mary Hospital, Pokfulam Road, Hong Kong, China
    Hum Reprod 15:1913-6. 2000
    ..Although the initial MRI picture may be misleading, the diagnosis of thrombosis should always be kept in mind, as it is the commonest cause of intracranial lesions after OHSS...
  58. ncbi request reprint Transfer of two embryos instead of three will not compromise pregnancy rate but will reduce multiple pregnancy rate in an assisted reproduction unit
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, PRC
    J Obstet Gynaecol Res 27:329-35. 2001
    ..1-4.2). CONCLUSION: Patients should be advised to have 2 embryos replaced without jeopardizing the pregnancy rates in the fresh cycles. The risk of multiple pregnancy is significantly increased when 3 embryos are transferred instead of 2...
  59. ncbi request reprint Is there any difference in pregnancy and implantation rates when nurses perform embryo transfer in an IVF-ET program?
    Wai Man Cheung
    Department of Obstetrics and Gynaecology, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong, People s Republic of China
    Gynecol Obstet Invest 56:1-5. 2003
    ..7 and 15.8% per transfer, respectively, whereas the corresponding implantation rates were 8.3 and 6.9%, respectively. Similar pregnancy and implantation rates were encountered in FET cycles whether ET was performed by nurses or doctors...
  60. doi request reprint Aberrant expression of angiopoietins-1 and -2 and vascular endothelial growth factor-A in peri-implantation endometrium after gonadotrophin stimulation
    Yin Lau Lee
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, 5 F, Block K, Pokfulam Road, Pokfulam, Hong Kong, China
    Hum Reprod 23:894-903. 2008
    ....
  61. ncbi request reprint Use of gonadotrophin releasing hormone (GnRH) antagonist (cetrotide) during ovarian stimulation for in-vitro fertilization treatment: multiple doses and single dose
    E H Ng
    Department of Obstetrics and Gynaecology, Queen Mary Hospital, The University of Hong Kong, PRC
    J Obstet Gynaecol Res 27:261-5. 2001
    ..The stimulation regimen was simplified by reducing the total treatment period, the dosage and duration of gonadotrophin. There may be differences in ovarian responses between the two protocols...
  62. doi request reprint Maternal serum anti-Mullerian hormone level is not superior to chronological age in predicting Down syndrome pregnancies
    Hang Wun Raymond Li
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital and Tsan Yuk Hospital, 102 Pokfulam Road, Hong Kong, China
    Prenat Diagn 30:320-4. 2010
    ..To compare the difference in maternal serum anti-Mullerian hormone (AMH) level between Down syndrome pregnancies and unaffected pregnancies, and to evaluate its performance as a screening marker for Down syndrome pregnancy...
  63. ncbi request reprint A randomized trial to compare 24 h versus 12 h double dose regimen of levonorgestrel for emergency contraception
    Suk Wai Ngai
    Department of Obstetrics and Gynecology, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong SAR, China
    Hum Reprod 20:307-11. 2005
    ..Two doses of levonorgestrel 0.75 mg were administered with the first dose given up to 120 h after unprotected intercourse. The second dose was given 12 h later in the first regimen and 24 h later in the second regimen...
  64. doi request reprint Evaluating the performance of serum antimullerian hormone concentration in predicting the live birth rate of controlled ovarian stimulation and intrauterine insemination
    Hang Wun Raymond Li
    Centre of Assisted Reproduction and Embryology, Department of Obstetrics and Gynaecology, University of Hong Kong, Queen Mary Hospital, Hong Kong
    Fertil Steril 94:2177-81. 2010
    ..To evaluate the role of serum antimullerian hormone (AMH) concentration in predicting live birth outcome in controlled ovarian stimulation and intrauterine insemination (IUI)...
  65. ncbi request reprint Effects of age on hormonal and ultrasound markers of ovarian reserve in Chinese women with proven fertility
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology and Clinical Trial Centre, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 18:2169-74. 2003
    ..Reproductive age can be assessed by a number of ovarian reserve tests. There are very few studies addressing the effects of age on these markers in fertile women, especially in Asia...
  66. ncbi request reprint Anxiolytic premedication reduces preoperative anxiety and pain during oocyte retrieval. A randomized double-blinded placebo-controlled trial
    Ernest Hung Yu Ng
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 17:1233-8. 2002
    ..The role of anxiolytic premedication remains unclear and significant postoperative side-effects may result from routine use...
  67. ncbi request reprint A comparative study of raw and prepared semen samples from two consecutive days
    G Makkar
    Department of Obstetrics and Gynecology, Queen Mary Hospital, University of Hong Kong, Hong Kong Special Administrative Region, China
    J Reprod Med 46:565-72. 2001
    ....
  68. ncbi request reprint A double-blind, randomized controlled trial on the use of a 50:50 mixture of nitrous oxide/oxygen in pain relief during suction evacuation for the first trimester pregnancy termination
    Anita Sik Yau Kan
    Department of Obstetrics and Gynaecology, Operation Theatre Service, Queen Mary Hospital, The University of Hong Kong, Hong Kong Special Administrative Region, People s Republic of China
    Hum Reprod 21:2606-11. 2006
    ..This prospective study assessed the role of a 50:50 mixture of nitrous oxide (N2O) and oxygen for pain relief during the termination of first trimester pregnancies by suction evacuation under conscious sedation...
  69. ncbi request reprint The role and comparison of two techniques of paracervical block for pain relief during suction evacuation for first-trimester pregnancy termination
    Anita Sik Yau Kan
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong, China
    Contraception 70:159-63. 2004
    ....
  70. doi request reprint Acupuncture for frozen-thawed embryo transfer cycles: a double-blind randomized controlled trial
    Emily Wing Sze So
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong Special Administrative Region, People s Republic of China
    Reprod Biomed Online 20:814-21. 2010
    ..038) than those who declined to join the study and received no acupuncture. In conclusion, comparable pregnancy and live birth rates of FET treatment were found in patients who had one session of real or placebo acupuncture after FET...
  71. ncbi request reprint Attitude of at-risk subjects towards preimplantation genetic diagnosis of alpha- and beta-thalassaemias in Hong Kong
    Pui Wah Hui
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Tsan Yuk Hospital, Queen Mary Hospital, Hong Kong, People s Republic of China
    Prenat Diagn 22:508-11. 2002
    ..The aim of the study was to assess whether preimplantation genetic diagnosis (PGD) was an acceptable alternative to prenatal diagnosis in couples at risk of giving birth to a child with alpha- or beta-thalassaemia in an Asian population...
  72. ncbi request reprint A prospective randomized study to compare the use of repeated doses of vaginal with sublingual misoprostol in the management of first trimester silent miscarriages
    Oi Shan Tang
    Department of Obstetrics and Gynaecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
    Hum Reprod 18:176-81. 2003
    ..A randomized controlled trial comparing sublingual with vaginal administration of misoprostol for medical management of silent miscarriages...
  73. doi request reprint Endocrine gland-derived vascular endothelial growth factor stimulates proliferation and tube formation in human uterine microvascular endothelial cell through the mitogen-activated protein kinase but not through the Akt pathway
    Yin Lau Lee
    Department of Obstetrics and Gynaecology, University of Hong Kong, Pokfulam, Hong Kong, Republic of China
    Fertil Steril 91:2163-71. 2009
    ....
  74. ncbi request reprint Increased cystic fibrosis transmembrane conductance regulator (CFTR) expression in the human hydrosalpinx
    Louis Chukwuemeka Ajonuma
    Epithelial Cell Biology Research Center, Department of Physiology, Faculty of Medicine, Chinese University of Hong Kong, Shatin
    Hum Reprod 20:1228-34. 2005
    ..The present study investigated the possible involvement of cystic fibrosis transmembrane conductance regulator (CFTR), a cAMP-dependent chloride channel, in the pathogenesis of hydrosalpinx...
  75. ncbi request reprint Endometrial "natural killer cell" lymphocyte population and implantation failure?
    Louis Chukwuemeka Ajonuma
    Fertil Steril 83:255; author reply 255-6. 2005
  76. ncbi request reprint Characterization of epithelial cell culture from human hydrosalpinges and effects of its conditioned medium on embryo development and sperm motility
    Louis Chukwuemeka Ajonuma
    Epithelial Cell Biology Research Center, Department of Physiology, Faculty of Medicine, The Chinese University of Hong Kong, NT, Hong Kong
    Hum Reprod 18:291-8. 2003
    ..The present study characterized hydrosalpinx epithelial cell culture and examined the effects of its conditioned medium (CM) on sperm motility, acrosome reaction and embryo development...
  77. ncbi request reprint New insights into the mechanisms underlying hydrosalpinx fluid formation and its adverse effect on IVF outcome
    Louis Chukwuemeka Ajonuma
    Epithelial Cell Biology Research Center, Department of Physiology, Faculty of Medicine, The Chinese University of Hong Kong, NT, Hong Kong SAR
    Hum Reprod Update 8:255-64. 2002
    ..The causes of reduced implantation, particularly in patients with visible hydrosalpinges shown on ultrasound scanning, are re-examined in light of these possible mechanisms...
  78. ncbi request reprint Ultrastructural characterization of whole hydrosalpinx from infertile Chinese women
    Louis Chukwuemeka Ajonuma
    Department of Physiology, Faculty of Medicine, Epithelial Cell Biology Research Center, The Chinese University of Hong Kong, Hong Kong
    Cell Biol Int 29:849-56. 2005
    ....
  79. ncbi request reprint Chlamydia trachomatis in infertile women undergoing uterine instrumentation: Screen or treat
    Ernest Hung Yu Ng
    Hum Reprod 17:2215-6; author reply 2216. 2002
  80. ncbi request reprint Teratogenic effect of hydrosalpinx fluid in humans?
    Ernest Hung Yu Ng
    Hum Reprod 18:2237; author reply 2237-6. 2003