342 results on '"Leung WC"'
Search Results
2. Travelling back to the 1940s: inspirations from a midwifery casebook written between 1947 and 1948
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Adams, Stephanie, primary, Lee, CP, additional, Au Yeung, Elce, additional, and Leung, WC, additional
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- 2024
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3. Trial use of recycled refractory grade alumina bricks as bos slag fluidiser
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Chemeca 2011 (39th : 2011 : Sydney, N.S.W.), Leung, WC, Johnston, CD, Matthews, JG, and Gerovasilis, T
- Published
- 2011
4. Womenʼs preference for non‐invasive prenatal DNA testing versus chromosomal microarray after screening for Down syndrome: a prospective study
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Cheng, YKY, Leung, WC, Leung, TY, Choy, KW, Chiu, RWK, Lo, T‐K, Kwok, KY, and Sahota, DS
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- 2018
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5. Candida glabrata fungal ball cystitis is a rare complication of conservative treatment of placenta accreta: a case report
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Wong, CK, primary, Cho, LY, additional, Lau, WL, additional, Cheung, Ingrid YY, additional, Yu, Chloe HT, additional, Law, IC, additional, and Leung, WC, additional
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- 2022
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6. Effects of strict public health measures on seroprevalence of anti–SARS-CoV-2 antibodies during pregnancy
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Leung, Hillary HY, primary, Kwok, Christy YT, additional, Sahota, Daljit S, additional, Leung, Maran BW, additional, Lui, Grace CY, additional, Ng, Susanna SS, additional, Leung, WC, additional, Chan, Paul KS, additional, and Poon, Liona CY, additional
- Published
- 2022
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7. Labour room birth records of Kwong Wah Hospital since 1935
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Leung, WC, primary, Tai, SM, additional, Sham, Alice, additional, Yip, Winnie, additional, and See, Stella, additional
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- 2021
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8. Well-being of Academy Fellows and specialty trainees: what is the problem?
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Leung, WC, primary, Lo, Rosalie, additional, Teoh, Jeremy YC, additional, Cheng, Aaron, additional, Wong, Martin CS, additional, and Leung, Gilberto KK, additional
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- 2021
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9. Prevention of postpartum haemorrhage
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Leung, WC, primary
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- 2020
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10. Second tier non-invasive prenatal testing in a regional prenatal diagnosis service unit: a retrospective analysis and literature review
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Ng, Vivian KS, primary, Chan, Avis L, additional, Lau, WL, additional, and Leung, WC, additional
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- 2020
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11. The impact of psychological abuse by an intimate partner on the mental health of pregnant women
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Tiwari, A, Chan, KL, Fong, D, Leung, WC, Brownridge, DA, Lam, H, Wong, B, Lam, CM, Chau, F, Chan, A, Cheung, KB, and Ho, PC
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- 2008
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12. An audit on access to coronary artery surgery within a health district using New Zealand priority criteria as a benchmark
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Leung, WC, Tregoning, D, and Farrer, M
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- 1999
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13. Defensive practice among psychiatrists: a questionnaire survey
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Passmore K and Leung Wc
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Defensive Medicine ,Psychiatry ,medicine.medical_specialty ,Medical Errors ,business.industry ,media_common.quotation_subject ,Public health ,Questionnaire ,General Medicine ,Defensive medicine ,Blame ,Postal questionnaire ,England ,Health Care Surveys ,Surveys and Questionnaires ,Epidemiology ,Medical Staff, Hospital ,medicine ,Humans ,Original Article ,Seniority ,business ,media_common - Abstract
Objective There has been little research on the prevalence of defensive practice within hospital settings. The aim of this report was to examine the extent of defensiveness among psychiatrists and to examine the relationship between defensiveness and seniority, as well as the effect of previous experiences on the level of defensiveness. Design A postal questionnaire survey on defensive practice. Setting Northern Region of England. Subjects 154 psychiatrists in the region. Results 96 responses were received from 48 equivalent consultants, 18 specialist registrars, and 23 equivalent senior house officers. Overall, 75% of those who replied had taken defensive actions within the past month. In particular, 21% had admitted patients overcautiously and 29% had placed patients on higher levels of observations. Junior psychiatrists were particularly prone to practise defensively. Important contributing factors included previous experience of complaints (against colleague or self), critical incidents, and legal claims. Conclusion Almost three quarters of the psychiatrists who responded had practised defensively within the past month. The higher propensity of junior trainees to practise defensively may be attributable to their lack of confidence and experience. Experience of complaints (colleague or self) and critical incidents were important factors for defensive practice. Better and more structured training might reduce the high level of defensive practice and the way complaints and investigations are handled should be improved to maintain a truly “no blame” environment conducive to learning from past experience.
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- 2002
14. Human Rights Act 1998 and mental health legislation: implications for the management of mentally ill patients
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Leung Wc
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Mental Health Services ,medicine.medical_specialty ,Personal View ,Human rights ,Human Rights ,business.industry ,Mentally ill ,media_common.quotation_subject ,Public health ,Mental Disorders ,Mental Health Act ,Fundamental rights ,Legislation ,General Medicine ,Safeguarding ,United Kingdom ,International human rights law ,Law ,Medicine ,Commitment of Mentally Ill ,Humans ,Safety ,business ,Psychiatry ,media_common - Abstract
In the management of mentally ill patients, there is a tension between protecting the rights of individual patients and safeguarding public safety. The Human Rights Act 1998 emphasises on the former while two recent white papers focus on the latter. This article first examines the extent to which the Mental Health Act 1983 is consistent with the Human Rights Act. It argues that while the recent white papers exploit the gaps in the judgments given by the European courts, its compatibility with human rights is very doubtful. The practical implications of the Human Rights Act for doctors are discussed.
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- 2002
15. Managers and professionals: competing ideologies
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Leung Wc
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business.industry ,media_common.quotation_subject ,General Medicine ,Ideology ,Public relations ,Psychology ,business ,media_common - Published
- 2000
16. Intensive care unit admission of obstetric cases: a single centre experience with contemporary update
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Ng, Vivian KS, primary, Lo, TK, additional, Tsang, HH, additional, Lau, WL, additional, and Leung, WC, additional
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- 2013
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17. Parallel vertical compression sutures in the lower uterine segment to control bleeding from major placenta previa or accrete during caesarean section
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Lo, TK, primary, Lau, WL, additional, and Leung, WC, additional
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- 2012
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18. A case of epigastric pain one day after normal vaginal delivery
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Lo, TK, primary, Chan, LL, additional, Lau, WL, additional, Wong, SH, additional, Wong, M, additional, Lo, KY, additional, and Leung, WC, additional
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- 2012
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19. Factors influencing women's choice on mode of delivery for twin pregnancy with twin i in cephalic presentation: a pilot study
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Lo, TK, primary, Liu, K, additional, Lau, WL, additional, and Leung, WC, additional
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- 2012
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20. Identifying intimate partner violence: comparing the Chinese abuse assessment screen with the Chinese revised conflict tactics scales
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Tiwari, A, primary, Fong, DYT, additional, Chan, KL, additional, Leung, WC, additional, Parker, B, additional, and Ho, PC, additional
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- 2007
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21. Rapid aneuploidy testing, traditional karyotyping, or both?
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Leung, WC, primary and Lao, TT, additional
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- 2005
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22. Official career guidance for specialist registrars
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Leung Wc
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medicine.medical_specialty ,business.industry ,Family medicine ,MEDLINE ,Medicine ,General Medicine ,business - Published
- 2000
23. Effects of pomegranate juice supplementation on pulse wave velocity and blood pressure in healthy young and middle-aged men and women.
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Lynn A, Hamadeh H, Leung WC, Russell JM, Barker ME, Lynn, Anthony, Hamadeh, Hiba, Leung, Wing Chi, Russell, Jean M, and Barker, Margo E
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Pomegranate juice may improve cardiovascular risk because of its content of antioxidant polyphenols. We conducted a randomized placebo-controlled parallel study to examine the effect of pomegranate juice on pulse wave velocity (PWV), blood pressure (BP) and plasma antioxidant status (ferric reducing power; FRAP) in 51 healthy adults (30-50 years). Participants consumed 330 ml/day of pomegranate juice or control drink for four weeks. Measurements were made at baseline and at four weeks. There was no effect of the intervention on PWV (P = 0.694) and plasma FRAP (P = 0.700). However, there was a significant fall in systolic blood pressure (-3.14 mmHg, P < 0.001), diastolic blood pressure (-2.33 mmHg P < 0.001) and mean arterial pressure (-2.60 mmHg, P < 0.001). Change in weight was similar in the two groups over the intervention period (P = 0.379). The fall in BP was not paralleled by changes in concentration of serum angiotensin converting enzyme. We conclude that pomegranate juice supplementation has benefits for BP in the short term, but has no effect on PWV. The mechanism for the effect is uncertain. [ABSTRACT FROM AUTHOR]
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- 2012
24. Prelabor rupture of membranes at term requiring labor induction -- a feature of occult fetal cephalopelvic disproportion?
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Chan BC, Leung WC, and Lao TT
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Aim: To examine the maternal and neonatal characteristics related to labor outcome following induction for prelabor rupture of membranes (PROM) after 37 weeks' gestation. Method: All singleton pregnancies delivered following spontaneous or induced labor after 37 weeks in four years were analyzed. Patients with labor induction for PROM comprised the study group. Outcome of labor was analyzed according to gestational age at delivery. Results: Among the 13,505 patients in the entire cohort, 1710 (12.7%) had labor induction for PROM. These women were older and heavier, were more nulliparas and had more large-for-gestational age (LGA) infants, higher rates of instrumental and cesarean deliveries, and a shorter mean gestation, but no difference in height, mean birth weight, or incidence of male infants. Multiple logistic regression analysis confirmed that labor induction was a weak but significant independent factor for cesarean delivery (aOR 1.18, 95% CI: 1.01-1.38). The rates of cesarean delivery significantly correlated with gestational age at delivery for both LGA (P<0.001) and non-LGA (P<0.001) infants, together with significantly increased birth weight. Conclusion: The results suggest that a likely explanation for the cesarean delivery following labor induction for PROM at term in our population is underlying cephalopelvic disproportion. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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25. Can amnio-polymerase chain reaction alone replace conventional cytogenetic study for women with positive biochemical screening for fetal Down syndrome?
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Leung WC, Lau ET, Lao TT, Tang MHY, Leung, Wing Cheong, Lau, Elizabeth T, Lao, Terence T, and Tang, Mary Hoi Yin
- Abstract
To determine whether amnio-polymerase chain reaction (amnio-PCR) can replace conventional cytogenetic study for confirming the karyotype of fetuses in women with positive biochemical screening for fetal Down syndrome. To check the accuracy of this technique in our laboratory, we first compared the amnio-PCR results with those of conventional cytogenetic study in 235 patients referred from June 1999 to December 2001 for prenatal diagnosis in a referral center in Hong Kong. We then reviewed the results of 1526 amniotic fluid cultures performed for positive fetal Down syndrome screening between January 1997 and December 2001 and classified them as detectable or not detectable by amnio-PCR, using the assumption that we had replaced conventional cytogenetic study with amnio-PCR. The 235 amnio-PCR results were all informative, without a false-positive or false-negative result. Of the 1526 cases with positive fetal Down syndrome screening and no ultrasound abnormalities, only two cases of sex chromosome abnormalities and two cases of marker chromosomes would have been missed if conventional cytogenetic study had been replaced by amnio-PCR.Amnio-PCR can be an alternative to conventional cytogenetic study for women with positive biochemical screening for fetal Down syndrome and no demonstrable fetal structural abnormality. [ABSTRACT FROM AUTHOR]
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- 2003
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26. Mitochondrial and herpesvirus-specific deoxypyrimidine kinases
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Saul Kit, D Trkula, Leung Wc, and D R Dubbs
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Cytoplasm ,viruses ,Immunology ,Cytosine Nucleotides ,Biology ,medicine.disease_cause ,Deoxycytidine ,Thymidine Kinase ,Microbiology ,Isozyme ,Cell Line ,Structure-Activity Relationship ,chemistry.chemical_compound ,Cytosine nucleotide ,Virology ,mental disorders ,medicine ,Simplexvirus ,Herpesviridae ,Kinase ,Phosphotransferases ,Deoxycytidine Monophosphate ,Herpesvirus 1, Suid ,Molecular biology ,Mitochondria ,Kinetics ,Cytosol ,Herpes simplex virus ,Biochemistry ,chemistry ,Thymidine kinase ,Insect Science ,Phosphorylation ,Thymidine ,Research Article ,HeLa Cells - Abstract
To characterize and compare the thymidine (TdR) and deoxycytidine (CdR) kinase isozymes of uninfected and herpesvirus-infected cells: (i) the subcellular distribution of the isozymes has been studied; (ii) a specific assay for CdR kinase has been devised; (iii) the TdR kinase isozymes have been partially purified; and (iv) the purified enzymes have been analyzed by disc polyacrylamide gel electrophoresis, isoelectric focusing, and glycerol gradient centrifugation and by substrate competition and dCTP inhibition studies. The results indicate that there are interesting individual differences with respect to nucleoside acceptor specificity between the cytosol and mitochondrial pyrimidine deoxyribonucleoside kinases of uninfected cells and between the enzymes induced by different herpesviruses. In the cytosol of uninfected mouse, chicken, and owl monkey kidney cells, two different proteins, TdR kinase F and CdR kinase 2, catalyze the phosphorylations of TdR and CdR, respectively. TdR kinase F does not phosphorylate CdR, nor does CdR kinase 2 phosphorylate TdR. A second TdR kinase isozyme present in HeLa(BU25) mitochondria (TdR kinase B) also lacks CdR phosphorylating activity. In contrast, a genetically distinctive deoxypyrimidine kinase (TdR kinase A) of mouse, human, and chick mitochondria catalyzes the phosphorylation of both TdR and CdT. Three herpesviruses, marmoset herpesvirus and herpes simplex virus types 1 and 2, induce in the cytosol fraction of LM(TK-) mouse cells isozymes which share common properties with mitochondrial TdR kinase A, including the ability to catalyze the phosphorylation of both TdR and CdR. However, the herpesvirus-induced deoxypyrimidine kinases differ from mitochondrial TdR kinase A with respect to sedimentation coefficient, sensitivity to dCTP inhibition, and antigenic determinants. The herpesvirus-specific and the mitochondrial deoxypyrimidine kinases exhibit a preference for TdR over CdR as nucleoside acceptor. Pseudorabies virus and herpesvirus of turkeys induce cytosol TdR kinases resembling the other herpesvirus-induced TdR kinases in several properties, but like cellular TdR kinase F, the pseudorabies virus and herpesvirus of turkeys TdR kinases lack detectable CdR phosphorylating activities. Finally, a marmoset herpesvirus nutant resistant to bromodeoxyuridine, equine herpesvirus type 1, and Herpesvirus aotus induces neither TdR nor CdR phosphorylating enzymes during productive infections.
- Published
- 1975
27. Rapid aneuploidy test for positive Down screening: who is willing to pay for it?
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Lo TK, Leung WC, Lau WL, Lam H, Lai FK, Ng LS, Wong WC, Chan A, and Chin RK
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- 2010
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28. Thymidine kinase isozymes of normal and virus-infected cells
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G. N. Jorgensen, S. Kit, Leung Wc, D. Trkula, and D. R. Dubbs
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Simplexvirus ,Cytoplasm ,food.ingredient ,Vaccinia virus ,Simian virus 40 ,Biology ,medicine.disease_cause ,Biochemistry ,Isozyme ,Thymidine Kinase ,Virus ,Herpesviridae ,Adenoviridae ,Cell Line ,food ,Cytopathogenic Effect, Viral ,Herpesvirus 1, Gallid ,Genetics ,medicine ,Isoelectric Point ,Molecular Biology ,DNA Viruses ,Ribonucleotides ,Molecular biology ,Mitochondria ,Isoenzymes ,Isoelectric point ,Cell culture ,Thymidine kinase - Published
- 1975
29. Subcellular localization and properties of thymidine kinase from adenovirus-infected cells
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Leung Wc, Saul Kit, Dubbs Dr, G. N. Jorgensen, and Trkula D
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Thymidine kinase activity ,Time Factors ,Uracil Nucleotides ,Biology ,In Vitro Techniques ,Kidney ,Virus Replication ,Thymidine Kinase ,Adenoviridae ,Cell Line ,chemistry.chemical_compound ,Adenosine Triphosphate ,Cytosol ,Virology ,medicine ,Centrifugation, Density Gradient ,Animals ,Adenovirus infection ,Polyacrylamide gel electrophoresis ,Kinase ,Haplorhini ,medicine.disease ,Subcellular localization ,Electrophoresis, Disc ,Molecular biology ,Mitochondria ,Molecular Weight ,chemistry ,Biochemistry ,Thymidine kinase ,Thymidine - Abstract
Summary The principal cytosol thymidine kinase activity of African green monkey kidney cells increased approximately threefold at 21 to 29 h after infection with adenovirus type 5. Disc polyacrylamide gel electrophoresis (disc PAGE) analyses showed that the electrophoretic mobility relative to the tracking dye (Rm) of the cytosol thymidine kinase from both mock-infected and adenovirus type 5-infected cells was about 0.23. The cytosol thymidine kinase from normal cells also resembled the cytosol enzyme from infected cells with respect to phosphate donor specificity and sedimentation coefficient. Mitochondria from normal and virus-infected cells contained a cytosol-like enzyme and, in addition, a distinctive mitochondrial isozyme exhibiting an Rm of about 0.6 and a smaller sedimentation coefficient than the cytosol enzyme. The activity of the mitochondrial-specific isozyme of thymidine kinase (Rm = 0.6) was not significantly increased by virus infection. The ratio of the two thymidine kinase activities found in mitochondria also was not markedly changed by virus infection. The results suggest that adenovirus type 5 infection reactivates an inactive molecular form of cytosol thymidine kinase or derepresses the synthesis of the cytosol enzyme, but not that of the mitochondrial-specific thymidine kinase. Adenovirus infection does not alter the electrophoretic mobilities of the cytosol and mitochondrial thymidine kinases.
- Published
- 1974
30. Metoclopramide versus placebo with opioid.
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Alsalim W, Leung WC, and Butler J
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- 2004
31. Trajectories and predictors of depressive symptoms among pregnant women: A 3-year longitudinal study.
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Chen XY, Lo CKM, Wong RS, Tung KTS, Tso WWY, Ho FK, Leung WC, Ip P, and Chan KL
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Objective: Not all women experience the same changes in depression from pregnancy through the years following childbirth, but the patterns of prenatal and postnatal depression are underexplored. This study investigated the trajectories and associated predictors of depressive symptoms in women from pregnancy through the first 3 years postpartum., Method: We followed 340 pregnant women from an antenatal clinic in Hong Kong, first at 20-24 weeks of gestation, then at 4 weeks after childbirth, and again at 3 years after childbirth. Pregnant women reported their depressive symptoms whether they had intimate partner violence, health conditions, adverse childhood experiences, family support, and perceived partner involvement. Latent class growth analysis was applied to identify distinct trajectories of depression, and binary logistic regressions were performed to analyze predictors of trajectories., Results: We found that 26.5% of women showed clinical depressive symptoms at 20-24 weeks of gestation, 9.7% at 4 weeks after childbirth, and 12.6% at 3 years after childbirth. Two classes were identified: a low-stable group (86.2%) and a relapsing/remitting group (13.8%). Women with a history of trauma (i.e., intimate partner violence and adverse childhood experiences) and mental health difficulties were more likely to be classified in the relapsing/remitting group than in the low-stable group. Family support and partner emotional involvement appeared to protect the women from suffering relapsing/remitting depression., Conclusions: The findings highlight the importance of screening for depression throughout pregnancy and extending several years postpartum. Distinguishing the different trajectories of depression and identifying its associated factors are critical to providing targeted interventions to the most vulnerable women (i.e., a relapsing/remitting group in the present study). (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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- 2024
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32. Implementation of First-Trimester Screening and Prevention of Preeclampsia: A Stepped Wedge Cluster-Randomized Trial in Asia.
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Nguyen-Hoang L, Dinh LT, Tai AST, Nguyen DA, Pooh RK, Shiozaki A, Zheng M, Hu Y, Li B, Kusuma A, Yapan P, Gosavi A, Kaneko M, Luewan S, Chang TY, Chaiyasit N, Nanthakomon T, Liu H, Shaw SW, Leung WC, Mahdy ZA, Aguilar A, Leung HHY, Lee NMW, Lau SL, Wah IYM, Lu X, Sahota DS, Chong MKC, and Poon LC
- Subjects
- Humans, Female, Pregnancy, Adult, Asia epidemiology, Mass Screening methods, Prenatal Diagnosis methods, Incidence, Risk Factors, Pre-Eclampsia prevention & control, Pre-Eclampsia epidemiology, Pre-Eclampsia diagnosis, Pregnancy Trimester, First, Aspirin therapeutic use, Aspirin administration & dosage
- Abstract
Background: This trial aimed to assess the efficacy, acceptability, and safety of a first-trimester screen-and-prevent strategy for preterm preeclampsia in Asia., Methods: Between August 1, 2019, and February 28, 2022, this multicenter stepped wedge cluster randomized trial included maternity/diagnostic units from 10 regions in Asia. The trial started with a period where all recruiting centers provided routine antenatal care without study-related intervention. At regular 6-week intervals, one cluster was randomized to transit from nonintervention phase to intervention phase. In the intervention phase, women underwent first-trimester screening for preterm preeclampsia using a Bayes theorem-based triple-test. High-risk women, with adjusted risk for preterm preeclampsia ≥1 in 100, received low-dose aspirin from <16 weeks until 36 weeks., Results: Overall, 88.04% (42 897 of 48 725) of women agreed to undergo first-trimester screening for preterm preeclampsia. Among those identified as high-risk in the intervention phase, 82.39% (2919 of 3543) received aspirin prophylaxis. There was no significant difference in the incidence of preterm preeclampsia between the intervention and non-intervention phases (adjusted odds ratio [aOR], 1.59 [95% CI, 0.91-2.77]). However, among high-risk women in the intervention phase, aspirin prophylaxis was significantly associated with a 41% reduction in the incidence of preterm preeclampsia (aOR, 0.59 [95% CI, 0.37-0.92]). In addition, it correlated with 54%, 55%, and 64% reduction in the incidence of preeclampsia with delivery at <34 weeks (aOR, 0.46 [95% CI, 0.23-0.93]), spontaneous preterm birth <34 weeks (aOR, 0.45 [95% CI, 0.22-0.92]), and perinatal death (aOR, 0.34 [95% CI, 0.12-0.91]), respectively. There was no significant between-group difference in the incidence of aspirin-related severe adverse events., Conclusions: The implementation of the screen-and-prevent strategy for preterm preeclampsia is not associated with a significant reduction in the incidence of preterm preeclampsia. However, low-dose aspirin effectively reduces the incidence of preterm preeclampsia by 41% among high-risk women. The screen-and-prevent strategy for preterm preeclampsia is highly accepted by a diverse group of women from various ethnic backgrounds beyond the original population where the strategy was developed. These findings underpin the importance of the widespread implementation of the screen-and-prevent strategy for preterm preeclampsia on a global scale., Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03941886., Competing Interests: L.C.P. has received speaker fees and consultancy payments from Roche Diagnostics and Ferring Pharmaceuticals. In addition, she has received in-kind contributions from Roche Diagnostics, Revvity Inc (formerly PerkinElmer Life and Analytical Sciences), Thermo Fisher Scientific, Ningbo Aucheer Biological Technology Co, Ltd, and GE HealthCare. D.S.S. has received in-kind contributions from Revvity Inc, Thermo Fisher Scientific, Roche Diagnostics, Diabetomics, and Ningbo Aucheer Biological Technology Co, Ltd. R.K.P. is chief executive officer of Ritz Medical Co Ltd, a genetic testing company, and holds shares in and receives executive compensation from it. The other authors report no conflicts.
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- 2024
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33. Can we eliminate mother-to-child transmission of hepatitis B virus in Hong Kong by 2030?
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Leung WC and Wong MCS
- Abstract
Competing Interests: Both authors have declared no conflicts of interest.
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- 2024
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34. Validation of the first-trimester machine learning model for predicting pre-eclampsia in an Asian population.
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Nguyen-Hoang L, Sahota DS, Pooh RK, Duan H, Chaiyasit N, Sekizawa A, Shaw SW, Seshadri S, Choolani M, Yapan P, Sim WS, Ma R, Leung WC, Lau SL, Lee NMW, Leung HYH, Meshali T, Meiri H, Louzoun Y, and Poon LC
- Subjects
- Humans, Female, Pregnancy, Adult, Prospective Studies, Asian People, Placenta Growth Factor blood, Pulsatile Flow, Asia, Predictive Value of Tests, ROC Curve, Artificial Intelligence, Prenatal Diagnosis methods, Pre-Eclampsia diagnosis, Pre-Eclampsia blood, Pregnancy Trimester, First, Machine Learning, Uterine Artery diagnostic imaging
- Abstract
Objectives: To evaluate the performance of an artificial intelligence (AI) and machine learning (ML) model for first-trimester screening for pre-eclampsia in a large Asian population., Methods: This was a secondary analysis of a multicenter prospective cohort study in 10 935 participants with singleton pregnancies attending for routine pregnancy care at 11-13
+6 weeks of gestation in seven regions in Asia between December 2016 and June 2018. We applied the AI+ML model for the first-trimester prediction of preterm pre-eclampsia (<37 weeks), term pre-eclampsia (≥37 weeks), and any pre-eclampsia, which was derived and tested in a cohort of pregnant participants in the UK (Model 1). This model comprises maternal factors with measurements of mean arterial pressure, uterine artery pulsatility index, and serum placental growth factor (PlGF). The model was further retrained with adjustments for analyzers used for biochemical testing (Model 2). Discrimination was assessed by area under the receiver operating characteristic curve (AUC). The Delong test was used to compare the AUC of Model 1, Model 2, and the Fetal Medicine Foundation (FMF) competing risk model., Results: The predictive performance of Model 1 was significantly lower than that of the FMF competing risk model in the prediction of preterm pre-eclampsia (0.82, 95% confidence interval [CI] 0.77-0.87 vs. 0.86, 95% CI 0.811-0.91, P = 0.019), term pre-eclampsia (0.75, 95% CI 0.71-0.80 vs. 0.79, 95% CI 0.75-0.83, P = 0.006), and any pre-eclampsia (0.78, 95% CI 0.74-0.81 vs. 0.82, 95% CI 0.79-0.84, P < 0.001). Following the retraining of the data with adjustments for the PlGF analyzers, the performance of Model 2 for predicting preterm pre-eclampsia, term pre-eclampsia, and any pre-eclampsia was improved with the AUC values increased to 0.84 (95% CI 0.80-0.89), 0.77 (95% CI 0.73-0.81), and 0.80 (95% CI 0.76-0.83), respectively. There were no differences in AUCs between Model 2 and the FMF competing risk model in the prediction of preterm pre-eclampsia (P = 0.135) and term pre-eclampsia (P = 0.084). However, Model 2 was inferior to the FMF competing risk model in predicting any pre-eclampsia (P = 0.024)., Conclusion: This study has demonstrated that following adjustment for the biochemical marker analyzers, the predictive performance of the AI+ML prediction model for pre-eclampsia in the first trimester was comparable to that of the FMF competing risk model in an Asian population., (© 2024 The Authors. International Journal of Gynecology & Obstetrics published by John Wiley & Sons Ltd on behalf of International Federation of Gynecology and Obstetrics.)- Published
- 2024
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35. Intimate Partner Violence Against Women Before, During, and After Pregnancy: A Meta-Analysis.
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Chen XY, Lo CKM, Chen Q, Gao S, Ho FK, Brownridge DA, Leung WC, Ip P, and Ling Chan K
- Subjects
- Adult, Female, Humans, Pregnancy, Pregnant Women psychology, Prevalence, Risk Factors, Intimate Partner Violence statistics & numerical data
- Abstract
Intimate partner violence (IPV) against pregnant women negatively impacts women's and infants' health. Yet inconsistent results have been found regarding whether pregnancy increases or decreases the risk of IPV. To answer this question, we systematically searched for studies that provided data on IPV against women before pregnancy, during pregnancy, and after childbirth. Nineteen studies met our selection criteria. We meta-analyzed the nineteen studies for the pooled prevalence of IPV across the three periods and examined study characteristics that moderate the prevalence. Results showed the pooled prevalence estimates of IPV were 21.2% before pregnancy, 12.8% during pregnancy and 14.7% after childbirth. Although these findings suggest a reduction in IPV during pregnancy, our closer evaluation of the prevalence of IPV after childbirth revealed that the reduction does not appear to persist. The prevalence of IPV increased from 12.8% within the first year after childbirth to 24.0% beyond the first year. Taken together, we should not assume pregnancy protects women from IPV, as IPV tends to persist across a longer-term period. Future studies are needed to investigate if IPV transits into other less obvious types of violence during pregnancy. Moderator analyses showed the prevalence estimates significantly varied across countries by income levels and regions., Competing Interests: Declaration of Conflicting InterestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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36. Intimate partner violence during pregnancy: To screen or not to screen?
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Wong JY, Zhu S, Ma H, Ip P, Chan KL, and Leung WC
- Abstract
Intimate partner violence (IPV) during pregnancy emerges as a compelling and urgent concern within the domain of public health, casting a long shadow over a substantial cohort of women. Its pernicious consequences extend beyond the individual, enveloping the well-being of both the mother and the fetus, giving rise to an elevated risk of preterm birth, low birth weight, fetal harm, and maternal psychological distress, including depression, anxiety, post-traumatic stress disorder, and, tragically, maternal mortality. Despite the prevalence of IPV being comparable to other conditions like gestational diabetes and preeclampsia, a universal screening protocol for IPV remains absent globally. We reviewed the clinical guidelines and practices concerning IPV screening, painstakingly scrutinizing their contextual nuances across diverse nations. Our study unveils multifaceted challenges of implementing universal screening. These hurdles encompass impediments to victim awareness and disclosure, limitations in healthcare providers' knowledge and training, and the formidable structural barriers entrenched within healthcare systems. Concurrently, we delve into the potential biomarkers intricately entwined with IPV. These promising markers encompass inflammatory indicators, epigenetic and genetic influences, and a diverse array of chemical compounds and proteins. Lastly, we discussed various criteria for universal screening including (1) valid and reliable screening tool; (2) target population as pregnant women; (3) scientific evidence of screening programme; and (4) integration of education, testing, clinical services, and programme management to minimise the challenges, which are paramount. With the advancement of digital technology and various biomarkers identification, screening and detecting IPV in clinical settings can be conducted systemically. A systems-level interventions with academia-community-indutrial partnerships can help connect pregnant women to desire support services to avoid adverse maternal and child health outcomes., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
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- 2024
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37. The use of external pelvimetry in 1948.
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Adams S, Lee CP, Au Yeung E, and Leung WC
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- Humans, History, 20th Century
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- 2024
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38. Association of LDL-cholesterol <1.8 mmol/L and statin use with the recurrence of intracerebral hemorrhage.
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Lee TC, Leung WC, Ho C, Chiu MW, Leung IY, Wong YK, Roxanna LK, Sum CH, Lui DT, Cheung RT, Leung GK, Chan KH, Teo KC, and Lau KK
- Subjects
- Humans, Male, Female, Aged, Middle Aged, Retrospective Studies, Risk Factors, Registries, Aged, 80 and over, Hong Kong epidemiology, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use, Cerebral Hemorrhage, Cholesterol, LDL blood, Recurrence
- Abstract
Background: Recent intensive low-density lipoprotein cholesterol (LDL-C) lowering trials, including FOURIER, ODYSSEY OUTCOMES, and Treat Stroke to Target (TST) trials, have mostly refuted the concern surrounding statin use, LDL-C lowering, and intracerebral hemorrhage (ICH) risk. However, the results from these trials may not be fully applied to ICH survivors, as the populations studied were mainly patients without prior ICH, in whom the inherent ICH risk is more than 10 times lower than that of ICH survivors. Although available literature on statin use after ICH has demonstrated no excess risk of recurrent ICH, other potential factors that may modify ICH risk, especially hypertension control and ICH etiology, have not generally been considered. Notably, data on LDL-C levels following ICH are lacking., Aims: We aim to investigate the association between LDL-C levels and statin use with ICH risk among ICH survivors, and to determine whether the risk differed with patients' characteristics, especially ICH etiology., Methods: Follow-up data of consecutive spontaneous ICH survivors enrolled in the University of Hong Kong prospective stroke registry from 2011 to 2019 were retrospectively analyzed. ICH etiology was classified as cerebral amyloid angiopathy (CAA) using the modified Boston criteria or hypertensive arteriopathy, while the mean follow-up LDL-C value was categorized as <1.8 or ⩾1.8 mmol/L. The primary endpoint was recurrent ICH. The association of LDL-C level and statin use with recurrent ICH was determined using multivariable Cox regression. Pre-specified subgroup analyses were performed, including based on ICH etiology and statin prescription. Follow-up blood pressure was included in all the regression models., Results: In 502 ICH survivors (mean age = 64.2 ± 13.5 years, mean follow-up LDL-C = 2.2 ± 0.6 mmol/L, 28% with LDL-C <1.8 mmol/L), 44 had ICH recurrence during a mean follow-up of 5.9 ± 2.8 years. Statin use after ICH was not associated with recurrent ICH (adjusted hazard ratio (AHR) = 1.07, 95% confidence interval (CI) = 0.57-2.00). The risk of ICH recurrence was increased for follow-up LDL-C <1.8 mmol/L (AHR = 1.99, 95% CI = 1.06-3.73). This association was predominantly observed in ICH attributable to CAA (AHR = 2.52, 95% CI = 1.06-5.99) and non-statin users (AHR = 2.91, 95% CI = 1.08-7.86)., Conclusion: The association between post-ICH LDL-C <1.8 mmol/L and recurrent ICH was predominantly observed in CAA patients and those with intrinsically low LDL-C (non-statin users). While statins can be safely prescribed in ICH survivors, LDL-C targets should be individualized and caution must be exercised in CAA patients., Competing Interests: Declaration of conflicting interestsThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: T-C.L., W.C.Y.L., C.H., M.W.L.C., I.Y.H.L., Y.-K.W., L.K.C.R., C.H.F.S., D.T.W.L., R.T.F.C., G.K.K.L., K.-H.C., and K.-C.T. report no conflicts of interest. K.-K.L. is supported by the Innovation and Technology Bureau, Research Grants Council, The Government of the Hong Kong SAR, Amgen, Boehringer Ingelheim, Eisai, and Pfizer; all of whom are unrelated to the current work.
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- 2024
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39. The Effect of Aerobic Exercises on Arterial Stiffness in Older People: A Systematic Review and Meta-Analysis.
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Ho LYW, Kwan RYC, Yuen KM, Leung WC, Tam PN, Tsim NM, and Ng SSM
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- Humans, Aged, Randomized Controlled Trials as Topic, Pulse Wave Analysis, Exercise Therapy methods, Vascular Stiffness physiology, Exercise physiology
- Abstract
Background and Objectives: Aerobic exercise is a cost-effective intervention to improve arterial stiffness, but its effects on older people are unclear; this review aims to determine those effects., Research Design and Methods: Five databases were searched for randomized controlled trials of aerobic exercises. Backward and forward citations and clinical trial registries were also reviewed. Data were extracted and synthesized. A random-effects model was used in a meta-analysis. The risk of bias and the certainty of the evidence were also assessed. The protocol of this review was registered (PROSPERO registration number: CRD42022349494)., Results: Eighteen studies (n = 775) were identified. Aerobic exercises included cycling, walking, swimming, standing core exercise, bench step exercise, aquarobic exercise, jogging, running, upper-limb cycling, and aquatic walking. Postintervention, improvements were seen in the pulse wave velocity (SMD9 = -0.89, 95% confidence interval (CI)-1.57 to -0.22), arterial velocity-pulse index (MD2 = -6.84, 95% CI -9.05 to -4.63), and arterial pressure-volume index (MD2 = -4.97, 95% CI -6.9 to -3.04), but not in the augmentation index, arterial compliance, or beta stiffness index. Exercise lasting >8 weeks but not 4-8 weeks significantly improved pulse wave velocity. Aerobic exercise had a beneficial effect on healthy older people but not on older people with disease. The overall risk of bias was high in 9 of the included studies, with some concerns in the remaining studies. The certainty of the evidence was very low., Discussion and Implications: Aerobic exercises, particularly those lasting >8 weeks, appear to be effective at improving pulse wave velocity in older people postintervention. Future trials with robust designs are needed., (© The Author(s) 2023. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2024
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40. Maternal diabetes and risk of attention-deficit/hyperactivity disorder in offspring in a multinational cohort of 3.6 million mother-child pairs.
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Chan AYL, Gao L, Hsieh MH, Kjerpeseth LJ, Avelar R, Banaschewski T, Chan AHY, Coghill D, Cohen JM, Gissler M, Harrison J, Ip P, Karlstad Ø, Lau WCY, Leinonen MK, Leung WC, Liao TC, Reutfors J, Shao SC, Simonoff E, Tan KCB, Taxis K, Tomlin A, Cesta CE, Lai EC, Zoega H, Man KKC, and Wong ICK
- Subjects
- Humans, Female, Pregnancy, Child, Male, Cohort Studies, Adult, Risk Factors, Mothers, Proportional Hazards Models, Taiwan epidemiology, New Zealand epidemiology, Hong Kong epidemiology, Attention Deficit Disorder with Hyperactivity epidemiology, Attention Deficit Disorder with Hyperactivity genetics, Diabetes, Gestational epidemiology, Prenatal Exposure Delayed Effects epidemiology
- Abstract
Previous studies report an association between maternal diabetes mellitus (MDM) and attention-deficit/hyperactivity disorder (ADHD), often overlooking unmeasured confounders such as shared genetics and environmental factors. We therefore conducted a multinational cohort study with linked mother-child pairs data in Hong Kong, New Zealand, Taiwan, Finland, Iceland, Norway and Sweden to evaluate associations between different MDM (any MDM, gestational diabetes mellitus (GDM) and pregestational diabetes mellitus (PGDM)) and ADHD using Cox proportional hazards regression. We included over 3.6 million mother-child pairs between 2001 and 2014 with follow-up until 2020. Children who were born to mothers with any type of diabetes during pregnancy had a higher risk of ADHD than unexposed children (pooled hazard ratio (HR) = 1.16, 95% confidence interval (CI) = 1.08-1.24). Higher risks of ADHD were also observed for both GDM (pooled HR = 1.10, 95% CI = 1.04-1.17) and PGDM (pooled HR = 1.39, 95% CI = 1.25-1.55). However, siblings with discordant exposure to GDM in pregnancy had similar risks of ADHD (pooled HR = 1.05, 95% CI = 0.94-1.17), suggesting potential confounding by unmeasured, shared familial factors. Our findings indicate that there is a small-to-moderate association between MDM and ADHD, whereas the association between GDM and ADHD is unlikely to be causal. This finding contrast with previous studies, which reported substantially higher risk estimates, and underscores the need to reevaluate the precise roles of hyperglycemia and genetic factors in the relationship between MDM and ADHD., (© 2024. The Author(s).)
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- 2024
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41. Natural history of infants with vitamin D deficiency in Hong Kong.
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Tung JY, So HK, Tung KT, Wong RS, Tsang HW, Chan B, Tso WW, Wong IC, Yam JC, Lee SL, Pang G, Wong WH, Cheung KW, Leung WC, and Ip P
- Subjects
- Infant, Male, Female, Child, Humans, Hong Kong epidemiology, Vitamin D, Vitamins, Dietary Supplements, Vitamin D Deficiency
- Abstract
Background and Objectives: The usual recommended intake of vitamin D for healthy infants is 400 international unit (IU) daily. However, a high dose of vitamin D at 2000-3000 IU daily is needed for those with vitamin D deficiency (VDD). This study aimed to assess the natural history of a group of healthy infants with VDD and the associated factors for persistent VDD., Methods and Study Design: Healthy infants detected to have VDD (25OHD <25 nmol/L) in a population study were followed, and their demographics and clinical data were collected., Results: One hundred and thirty-one subjects (boys = 66%) were included. Their first serum 25OHD was taken at a median age of 87.5 days. None were treated with high-dose vitamin D supplements, but some have been given vitamin D at 400 IU daily. They were assessed again at the median age of 252.5 days when 15 remained to have VDD and 26 were in the insufficient range (25 - 49.9nmol/L). All persistent VDD children were on exclusive breastfeeding. Exclusive breastfeeding and no vitamin D supplementation were significant risk factors for persistent vitamin D insufficiency (<50nmol/L)., Conclusions: Persistent VDD is common among infants exclusively breastfeeding and those who did not receive vitamin D supplementation., Competing Interests: All authors have disclosed no conflicts of interest
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- 2023
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42. Levothyroxine Treatment Among Pregnant Women and Risk of Seizure in Children: A Population-Based Cohort Study.
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Ge GM, Man KKC, Cheung ECL, Ip P, Leung WC, Kung AWC, Cheung CL, and Wong ICK
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- Humans, Pregnancy, Female, Thyroxine adverse effects, Cohort Studies, Seizures chemically induced, Seizures drug therapy, Seizures epidemiology, Hong Kong epidemiology, Pregnant Women, Prenatal Exposure Delayed Effects chemically induced, Prenatal Exposure Delayed Effects epidemiology
- Abstract
Introduction and Objective: The risk of seizure in offspring following prenatal exposure to levothyroxine is not well investigated. This study aimed to evaluate the association between levothyroxine treatment among pregnant women and the risk of seizure in their offspring., Methods: This population-based cohort study included all pregnant women who delivered a live birth between January 2001 to January 2018, with a follow-up to December 2020, using data from the Hong Kong Clinical Data Analysis and Reporting System. Propensity score fine-stratification weighted hazard ratios (wHR) with 95% confidence intervals (CIs) were presented to assess the association between maternal levothyroxine use during pregnancy and seizures in children., Results: Among 528,343 included mother-child pairs, 3044 children were prenatally exposed to levothyroxine at any time during the pregnancy period. A significantly increased risk of seizure was observed in children of the prenatally exposed group compared with the prenatally unexposed group (wHR 1.12, 95% CI 1.02-1.22). An increased risk of seizure was observed when comparing the prenatally exposed group with euthyroid mothers who had no history of thyroid-related diagnosis or prescriptions (wHR 1.12, 95% CI 1.02-1.23). However, no significant difference was observed between the prenatally exposed group and those previously exposed to levothyroxine but had stopped during pregnancy (wHR 0.97, 95% CI 0.66-1.44). No significant difference was observed in the sibling-matched analysis either (wHR 1.23, 95% CI 0.76-2.01)., Conclusion: The observed increased risk of seizure in children born from mothers exposed to levothyroxine during pregnancy might be due to residual confounding by maternal thyroid disease. The findings support the current guidelines on the safe use of levothyroxine treatment during pregnancy., (© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
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- 2023
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43. The association between victimization and inflammation: A meta-analysis.
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Chen XY, Chan KL, Lo CKM, Ho FK, Leung WC, and Ip P
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- Adult, Child, Humans, Tumor Necrosis Factor-alpha, Inflammation epidemiology, C-Reactive Protein metabolism, Interleukin-6, Crime Victims
- Abstract
Background: To meta-analyze the existing studies examining the association of childhood and adulthood victimization with inflammation and to explore the moderating variables that affect these relationships., Methods: Relevant work published before 28th February 2021 was identified by searching five major databases. We analyzed the cross-sectional data extracted from cross-sectional and longitudinal studies using the random-effects model to estimate the correlation (r) as the pooled effect size and further conducted subgroup analyses and sensitivity analyses., Results: A total of 37 articles finally met the inclusion criteria, including studies for C-reactive protein (CRP) (k = 23; N
CRP = 11,780), interleukin-6 (IL-6) (k = 31; NIL-6 = 8943), and tumor necrosis factor-alpha (TNF-α) (k = 14; NTNF-α = 4125). Overall, victimization has a significantly positive association with inflammation, with a small effect size (r = 0.122). Specifically, effect sizes were the largest for TNF-a (r = 0.152), followed by IL-6 (r = 0.119), and CRP (r = 0.084). Additionally, the effect sizes for victimization against children were r = 0.145 (k = 6) for childhood victimization - childhood inflammation, and r = 0.139 (k = 27) for childhood victimization - adulthood inflammation, which appear to be larger than that of victimization against adults (r = 0.039; k = 2)., Limitations: Only a small number of studies on adult victimization were included. In addition, we only analyzed the cross-sectional relationship and did not have sufficient data to compare different types of victimization and single vs. multiple victimizations., Conclusions: Victimization is associated with a heightened inflammatory response. As victimization against children may have a stronger effect than victimization against adults, prevention of victimization targeting the childhood period may be necessary. Studies with more robust methodologies (i.e., representative, longitudinal, and multi-country designs) are needed to confirm these findings and to unpack the underlying mechanisms., Competing Interests: Conflict of Interest The authors declare that they have no competing interests., (Copyright © 2022 Elsevier B.V. All rights reserved.)- Published
- 2023
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44. Combination of brief advice, nicotine replacement therapy sampling, and active referral for smoking expectant fathers: abridged secondary publication.
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Wang MP, Luk TT, Lam TH, Li WHC, Leung WC, Leung KY, Cheung KW, Kwa C, Siong KH, Tang KK, and Lee KW
- Published
- 2023
45. Incidence of neonatal sepsis after universal antenatal culture-based screening of group B streptococcus and intrapartum antibiotics: A multicentre retrospective cohort study.
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Chan YTV, Lau SYF, Hui SYA, Ma T, Kong CW, Kwong LT, Chan D, Lee D, Mok SL, Ma V, Lo YC, Leung KY, and Leung WC
- Subjects
- Infant, Newborn, Child, Female, Pregnancy, Humans, Incidence, Anti-Bacterial Agents therapeutic use, Retrospective Studies, Escherichia coli, Streptococcus agalactiae, Antibiotic Prophylaxis, Infectious Disease Transmission, Vertical prevention & control, Neonatal Sepsis diagnosis, Neonatal Sepsis epidemiology, Neonatal Sepsis prevention & control, Streptococcal Infections diagnosis, Streptococcal Infections drug therapy, Streptococcal Infections epidemiology, Pregnancy Complications, Infectious diagnosis, Pregnancy Complications, Infectious drug therapy, Pregnancy Complications, Infectious epidemiology, Sepsis diagnosis, Sepsis epidemiology, Sepsis prevention & control
- Abstract
Objective: To compare the incidences of early and late-onset neonatal sepsis, including group B streptococcus (GBS) and Escherichia coli (E. coli) before and after implementation of universal screening and intrapartum antibiotics prophylaxis (IAP)., Design: Retrospective cohort study., Setting: Eight public hospitals and 31 Maternal and Child Health Centres (in Hong Kong., Population: 460 552 women attending routine antenatal service from 2009 to 2020., Methods: Universal culture-based GBS screening has been offered to eligible women since 2012. Total births, GBS screening tests, maternal GBS colonisation and neonatal sepsis with positive blood or cerebrospinal fluid were retrieved from clinical and laboratory database., Main Outcome Measures: Maternal GBS colonisation rate, early- and late-onset neonatal sepsis (including GBS and E. coli)., Results: Of 318 740 women with universal culture-based screening, 63 767 women (20.0%) screened positive. After implementation of GBS screening and IAP, the incidence of early-onset neonatal sepsis decreased (3.25 versus 2.26 per 1000 live births, p < 0.05), including those caused by GBS (1.03 versus 0.26 per 1000 live births, p < 0.05). Segmented regression showed that change in early-onse GBS sepsis incidence after screening was the only significant variable in the outcome trend. There was no significant evidence of increase in incidence of late-onset neonatal sepsis including those caused by GBS., Conclusions: Universal culture-based GBS screening and IAP were associated with reduction in early-onset neonatal sepsis including GBS disease. Although an increase in incidence of late-onset neonatal sepsis including those caused by GBS cannot be totally ruled out, we did not identify significant evidence that this occurred., (© 2022 John Wiley & Sons Ltd.)
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- 2023
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46. Application of Prenatal Whole Exome Sequencing for Structural Congenital Anomalies-Experience from a Local Prenatal Diagnostic Laboratory.
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Lai THT, Au LKS, Lau YTE, Lo HM, Chan KYK, Cheung KW, Ma TWL, Leung WC, Kong CW, Shu W, So PL, Kwong AKY, Mak CCY, Lee M, Chui MMC, Chung BHY, and Kan ASY
- Abstract
Fetal structural congenital abnormalities (SCAs) complicate 2-3% of all pregnancies. Whole-exome sequencing (WES) has been increasingly adopted prenatally when karyotyping and chromosomal microarray do not yield a diagnosis. This is a retrospective cohort study of 104 fetuses with SCAs identified on antenatal ultrasound in Hong Kong, where whole exome sequencing is performed. Molecular diagnosis was obtained in 25 of the 104 fetuses (24%). The highest diagnostic rate was found in fetuses with multiple SCAs (29.2%), particularly those with involvement of the cardiac and musculoskeletal systems. Variants of uncertain significance were detected in 8 out of the 104 fetuses (7.7%). Our study shows the utility of WES in the prenatal setting, and the extended use of the technology would be recommended in addition to conventional genetic workup.
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- 2022
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47. Sonographic measurement of cervical length and head perineum distance before labor to predict time of delivery.
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Chan YTV, Lau KW, Hui W, Lau CH, Leung WC, and Lau WL
- Subjects
- Pregnancy, Female, Humans, Delivery, Obstetric methods, Ultrasonography, Prenatal methods, Prospective Studies, Labor Presentation, Perineum diagnostic imaging, Labor, Obstetric
- Abstract
Objectives: This was an observational study on cervical length and head perineum distance and the prediction of time of delivery. One-hundred and twenty-five nulliparous women with uncomplicated, term, singleton pregnancy were recruited when they presented to the labor ward with show or infrequent painful uterine contractions (less than three contractions in ten minutes on a 30 min cardiotocogram). Apart from digital vaginal examination to assess cervical length and dilatation, sonographic cervical length and head perineum distance were measured by two-dimensional ultrasound. We compared women who delivered within 72 h of presentation of labor symptoms, with women who did not. After excluding ten women whose labor was induced and delivered within 72 h of presentation, one hundred and fifteen women were included for final data analysis., Main Findings: Forty-nine women (42.6%) delivered while sixty-six women (57.4%) remained undelivered at 72 h of presentation of symptoms of labor. There was no statistically significant difference between the two groups on age, presence of show, contractions, fetal head station and presentation and mode of delivery. For the group who had delivered within 72 h of presentation of labor symptoms, the mean sonographic cervical length was 1.87 cm ± 0.62 cm, while the head perineum distance was 6.01 cm ± 1.15 cm. For the other group, the mean sonographic cervical length was 2.10 cm ± 0.83 cm; head perineum distance was 6.03 cm ± 1.18 cm. There was no statistically significant difference between the groups for both sonographic cervical length ( p = .90); and head perineum distance ( p = .08). We also compared the cervical length measured by digital vaginal examination versus sonography. The median sonographic measurements were 1.47 cm, 2.11 cm and 2.79 cm at "1 cm," "2 cm" and "3 cm" digital vaginal measurement, respectively. However, there was extensive overlap between digitally and sonographically measured cervical length. Prediction accuracy of cervical length and head perineum distance was poor. The area under curve (AUC) of receiver operating characteristic (ROC) curve were 0.433 for sonographic cervical length and 0.501 for HPD., Conclusion: Transperineal sonographical assessment of cervical length and head perineum distance before labor was not useful in predicting the time of delivery. However, it can be explored as an alternative assessment method when digital vaginal examination is not preferred.
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- 2022
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48. Effectiveness of pelvic floor muscle training alone or combined with either a novel biofeedback device or conventional biofeedback for improving stress urinary incontinence: A randomized controlled pilot trial.
- Author
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Kannan P, Cheing GLY, Fung BKY, Li J, Leung WC, Chung RCK, Cheung TW, Lam LF, Lee WY, Wong WC, Wong WH, Tang PYG, and Chan PKL
- Subjects
- Humans, Female, Pelvic Floor physiology, Pilot Projects, Exercise Therapy methods, Treatment Outcome, Biofeedback, Psychology, Quality of Life, Urinary Incontinence, Stress therapy
- Abstract
Purpose: To (i) compare the acceptance of a newly developed, novel biofeedback device (PelviSense) with that of conventional biofeedback (CB) using an intravaginal probe for the treatment of stress urinary incontinence (SUI) in women, (ii) examine the feasibility and safety of using the PelviSense device as a pelvic floor muscle (PFM) training (PFMT) adjunct, and (iii) compare the PFMT adherence and effectiveness of CB, the PelviSense device, with PFMT alone for women with SUI., Methods: An assessor-blinded, three-arm, randomized controlled pilot trial was conducted among 51 women with SUI. Women were randomly allocated to one of three study groups (PelviSense-assisted PFMT, CB-assisted PFMT, or PFMT alone [control]). Outcome measures included the International Consultation on Incontinence Questionnaire-Short Form, the 1-h pad test, and the Modified Oxford Scale., Results: Participants in the PelviSense-assisted PFMT group expressed good device acceptance. PFMT adherence was greater in the PelviSense-assisted PFMT group than in the unassisted or CB-assisted PFMT groups. Between-groups analysis revealed significant effects on improved SUI symptoms, urine loss severity, and PFM strength for the PelviSense-assisted PFMT group compared with the CB-assisted and PFMT alone groups., Conclusions: The pilot trial results demonstrated moderate to high PFMT adherence in the PelviSense-assisted PFMT group and supported the safety of using the PelviSense device. The preliminary results of the pilot trial showed that PelviSense-assisted PFMT was more effective for reducing SUI symptoms among women than unassisted or CB-assisted PFMT., Trial Registration: This trial was registered in http://ClinicalTrials.gov (reference number: NCT04638348) before the recruitment of the first participant., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2022
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49. A new biofeedback device to improve adherence to pelvic floor muscle training in women with urinary incontinence: a randomised controlled pilot trial (abridged secondary publication).
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Kannan P, Cheing G, Fung B, Leung WC, Tang G, Chung R, and Chan P
- Published
- 2022
50. Implementation of Public Funded Genome Sequencing in Evaluation of Fetal Structural Anomalies.
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So PL, Hui ASY, Ma TWL, Shu W, Hui APW, Kong CW, Lo TK, Kan ANC, Kan EYL, Chong SC, Chung BHY, Luk HM, Choy KW, Kan ASY, and Leung WC
- Subjects
- Pregnancy, Female, Humans, Retrospective Studies, Exome Sequencing methods, Fetus abnormalities, Ultrasonography, Prenatal, Prenatal Diagnosis
- Abstract
With the advancements in prenatal diagnostics, genome sequencing is now incorporated into clinical use to maximize the diagnostic yield following uninformative conventional tests (karyotype and chromosomal microarray analysis). Hong Kong started publicly funded prenatal genomic sequencing as a sequential test in the investigation of fetal structural anomalies in April 2021. The objective of the study was to evaluate the clinical performance and usefulness of this new service over one year. We established a web-based multidisciplinary team to facilitate case selection among the expert members. We retrospectively analyzed the fetal phenotypes, test results, turnaround time and clinical impact in the first 15 whole exome sequencing and 14 whole genome sequencing. Overall, the molecular diagnostic rate was 37.9% (11/29). De novo autosomal dominant disorders accounted for 72.7% (8/11), inherited autosomal recessive disorders for 18.2% (2/11), and inherited X-linked disorders for 9.1% (1/11). The median turnaround time for ongoing pregnancy was 19.5 days (range, 13-31 days). Our study showed an overall clinical impact of 55.2% (16/29), which influenced reproductive decision-making in four cases, guided perinatal management in two cases and helped future family planning in ten cases. In conclusion, our findings support the important role of genome sequencing services in the prenatal diagnosis of fetal structural anomalies in a population setting. It is important to adopt a multidisciplinary team approach to support the comprehensive genetic service.
- Published
- 2022
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