Publications by authors named "Pong Mo Yuen"

Although menstrual extended regimens have been available in the market, limited study has been conducted on preferred menstrual characteristics in Asian women. This study aimed to investigate Chinese women's preferences on menstrual characteristics and factors affecting their preferences. Cross-sectional telephone survey of 1024 Hong Kong Chinese women in 2006.

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Objective: To compare the cost and quality-adjusted life-years (QALYs) of hysterectomy, myomectomy, and uterine artery embolization (UAE) for symptomatic control of uterine fibroids.

Design: A cost-utility analysis conducted by using Markov modeling.

Setting: The analysis was conducted from the perspective of Hong Kong society.

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Study Objective: To review the operative outcomes among different types of laparoscopic total hysterectomy (LH) classified according to the Munro and Parker classification system.

Design: Prospective observational cohort study (Canadian Task Force classification II).

Setting: 6 major public hospitals in Hong Kong.

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Prophylactic ondansetron or droperidol reduces the incidence of postoperative nausea and vomiting (PONV). Previous studies showed that the combination of these two drugs produced better antiemetic effect than either drug alone. We present a nonparametric method to determine the pharmacologic interaction between ondansetron and droperidol and compared the observed response of the drug combination with that predicted from additivity.

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Aim: To compare patients' health status function after treatment with thermal balloon endometrial ablation (TBEA) and levonorgestrel intrauterine system (LNG-IUS) for idiopathic menorrhagia.

Methods: Forty-four patients were recruited into a randomized trial comparing their health status after treatment with TBEA or LNG-IUS for idiopathic menorrhagia.

Results: At 1 year follow-up, the mean haemoglobin was significantly higher in women treated with TBEA (12.

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Background: Four types of treatment [hysterectomy, endometrial resection/ablation, levonorgestrel-releasing intrauterine system (LNG-IUS) and oral medical therapy] are available for management of menorrhagia. The objective of this study was to compare the cost and quality-adjusted life-years (QALYs) gained by these four treatment alternatives.

Methods: A Markov model was designed to simulate the healthcare resource utilization and QALYs of the four treatment alternatives for patients presenting with menorrhagia over 5 years.

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Aim: We review clinical characteristics, diagnostic difficulties, and our experience in the surgical management of ovarian fibromas.

Method: Twenty-three women with the operative diagnosis of an ovarian fibroma managed between January 1995 and August 2004 were reviewed retrospectively.

Results: These patients comprised 1% of all benign ovarian tumors seen over this study period.

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In a prospective study of 247 pregnant Chinese women, the prevalence of sleep disturbances across pregnancy has been assessed using a set of validated questionnaires including the Sleep and Health Questionnaire (SHQ) and the Epworth Sleepiness Scale (ESS). The frequency of self-reported snoring increased from 29.7% in the first trimester to 40.

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Objective: To evaluate sexual activities, attitudes, and complications related to intercourse among Chinese pregnant women and to study their source of the information.

Methods: This was a prospective cross-sectional study. Two hundred and ninety-eight Chinese pregnant women were recruited.

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Background: When compared with the conventional surgical evacuation for the treatment of miscarriage, medical evacuation has been largely accepted as an effective and safe management. However, there is a lack of data on the long-term reproductive outcome of these two treatment modalities, which is crucial in patient counselling. The current study evaluates and compares the long-term fertility and pregnancy outcome following these two treatments.

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Background: Menorrhagia is a common gynecological problem and its management options vary from medical to surgical treatment. With the development of the new minimally invasive therapies, there is a paucity of data in the preference and acceptance on these treatment options, especially in the Chinese population.

Methods: An anonymous survey using a self-constructed questionnaire was undertaken on women with heavy menstrual bleeding referred to the specialty clinic in a university teaching hospital.

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Physicians have become more conservative regarding prophylactic oophorectomy after publication of the Women's Health Initiative trial. They are less likely to prescribe estrogen therapy for women who have a high risk of coronary heart disease and more likely to use nonoral routes for estrogen therapy.

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We attempted to establish a model to measure the force required for trocar insertion at laparoscopy. A 3-cm, circular transducer was constructed from piezoresistive material that changes its impedance as force is exerted on its surface. The transducer is connected by an interface box to a personal computer to record surface contact pressure digitally (pressure = force/area) profile continuously during trocar insertion.

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Objective: To evaluate the change in intrauterine pressure during thermal balloon endometrial ablation and to identify risk factors associated with treatment failure.

Design: Prospective observational study.

Setting: University-affiliated teaching hospital.

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Background: Laparoscopic surgery is generally considered contraindicated in women with ruptured interstitial pregnancy as it is associated with profound bleeding and hypovolemic shock.

Cases: Two cases of ruptured interstitial pregnancy were treated with laparoscopic surgery. Laparoscopic cornuostomy and removal of products of conception were performed in 1 case and laparoscopic cornual resection in the other.

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Background: To determine the incidence and reasons for misdiagnosis in interstitial ectopic pregnancy.

Methods: We conducted a retrospective study from 1990 to 2001. Women with interstitial pregnancy were identified and their case records retrieved and reviewed.

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Objective: To assess the appearance of the endometrial cavity after thermal balloon endometrial ablation.

Design: Observational study.

Setting: University teaching hospital.

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Study Objective: To assess the frequency of intrauterine pathology among women with abnormal uterine bleeding (AUB) while taking hormone replacement therapy (HRT), and correlate pathology with clinical features.

Design: Retrospective review (Canadian Task Force classification II-2).

Setting: University teaching hospital-based outpatient clinic.

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In this study, we examined the localization of vascular endothelial growth factor (VEGF) and the changes in VEGF mRNA expression in various regions of the oviduct in fertile women throughout the ovulatory cycle. Oviduct tissue was collected from 22 women undergoing laparoscopic tubal sterilization or hysterectomy for a benign gynecological condition. Oviduct sections were divided into isthmus, ampullary, and infundibular regions.

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