2.Does low-molecular-weight heparin improve live birth rates in pregnant women with thrombophilic disorders? A systematic review.
Wei Keat TAN ; Shau Khng LIM ; Lay Kok TAN ; Dianne BAUPTISTA
Singapore medical journal 2012;53(10):659-663
INTRODUCTIONPregnancies in women with thrombophilia are associated with a higher risk of obstetric complications. We systematically reviewed the findings of relevant randomised controlled trials (RCTs) with the aim of investigating the effectiveness of low-molecular-weight heparins (LMWHs) in pregnant women with inherited thrombophilic disorders and its effect on the incidence of live births in these patients.
METHODSThe MEDLINE-PubMed and Cochrane CENTRAL databases from 2000 to 2010 were searched using a combination of keywords, including low-molecular-weight heparin, enoxaparin, pregnancy, live birth and thrombophilia. Studies were included if they were RCTs assessing the effect of anticoagulant treatment on live birth rates in women with a history of miscarriage without apparent causes other than thrombophilic disorder. Interventions included LMWH, with or without aspirin, aspirin alone or placebo controlled for the prevention of adverse pregnancy outcome.
RESULTS43 articles with seven RCTs were retrieved following the initial search, of which four studies had to be excluded as they assessed thromboembolic events as the final outcome (n = 1), focused on idiopathic recurrent miscarriages (n = 1), compared efficacy and safety of two doses of enoxaparin (n = 1), and examined patients with or without thrombophilic disorder (n = 1). Pooled data from the remaining three RCTs showed no significant difference in the improvement of live birth rates following LMWH interventions (p = 0.15).
CONCLUSIONAt present, the use of LMWH in women with inherited thrombophilia with recurrent pregnancy loss is not indicated. Large randomised placebo-controlled trials are further needed to prove the effectiveness of LMWH in these patients.
Female ; Heparin, Low-Molecular-Weight ; therapeutic use ; Humans ; Pregnancy ; Pregnancy Complications, Hematologic ; drug therapy ; Pregnancy Outcome ; Thrombophilia ; complications ; drug therapy ; Treatment Outcome
3.First presentation psychosis among the elderly in Singapore.
Singapore medical journal 2012;53(7):463-467
INTRODUCTIONIn tandem with our ageing population, it is observed there is a growing trend of elderly patients presenting for the first time with psychotic symptoms. Clinical experience suggests differences in the phenomenology of late-onset psychosis in our Asian context compared to studies done in the West. This study aimed to analyse the characteristics and psychopathology of first presentation psychosis in our local elderly and to determine the treatment outcome over a 12-month period.
METHODSA total of 64 subjects with first presentation psychosis were consecutively recruited. Those with a non-affective, non-organic psychotic disorder were evaluated using the Positive and Negative Symptoms Scale, the Clinical Global Impression Scale, Mini-Mental State Examination and the Beck's Depression Inventory.
RESULTSOf the 64 subjects recruited, 55 were enrolled in the study. 59.3% (n = 32) of the subjects were diagnosed to be suffering from very-late-onset schizophrenia-like psychosis, followed by delusional disorder in 31.5% (n = 17). The remaining 11.1% (n = 6) were diagnosed to have late-onset schizophrenia. The sample showed a high preponderance of women, with 88.9% reporting persecutory-type delusions. The majority of them were married and 80% of the subjects were living with relatives. Treatment was effective in ameliorating symptoms, but there was a high loss to follow-up of male subjects (81.8%).
CONCLUSIONThis descriptive study found sociodemographic and phenomenological similarities to other studies of late-onset psychosis in the West, except that social isolation and partition delusions were not prominent.
Age of Onset ; Aged ; Aging ; Female ; Geriatrics ; methods ; Humans ; Male ; Mental Status Schedule ; Psychometrics ; methods ; Psychotic Disorders ; diagnosis ; epidemiology ; Schizophrenia, Paranoid ; diagnosis ; epidemiology ; Schizophrenic Psychology ; Sex Factors ; Singapore ; Social Class ; Time Factors ; Treatment Outcome
4.Lessons learnt from two women with morbidly adherent placentas and a review of literature.
Edwin W H THIA ; Lay-Kok TAN ; Kanagalingam DEVENDRA ; Tze-Tein YONG ; Hak-Koon TAN ; Tew-Hong HO
Annals of the Academy of Medicine, Singapore 2007;36(4):298-303
INTRODUCTIONPathologically adherent placentas occur when there is a defect of the decidua basalis, typically arising from previous caesarean section, resulting in abnormally invasive implantation of the placenta. The depth of placental invasion varies from the superficial (accreta), to transmural and possibly beyond (percreta).
CLINICAL PICTUREWe report on 2 cases, one treated "conservatively", the other with a caesarean hysterectomy, both of which led to a safe outcome for both mother and baby.
CONCLUSIONSManagement relies on accurate early diagnosis with appropriate perioperative multidisciplinary planning to anticipate and avoid massive obstetric haemorrhage at delivery.
Adult ; Cesarean Section ; adverse effects ; utilization ; Decidua ; abnormalities ; Female ; Humans ; Hysterectomy ; Incidence ; Magnetic Resonance Imaging ; Placenta ; abnormalities ; diagnostic imaging ; Placenta Accreta ; diagnosis ; epidemiology ; etiology ; physiopathology ; Pregnancy ; Thailand ; epidemiology ; Ultrasonography ; Uterine Hemorrhage ; etiology
5.Maternal and Fetal Outcomes in Systemic Lupus Erythematosus Pregnancies.
Yih Jia POH ; Irene Yuen Lin YII ; Lim Hee GOH ; Hui Hua LI ; Liying YANG ; Hak Koon TAN ; Julian THUMBOO ; Lay Kok TAN
Annals of the Academy of Medicine, Singapore 2020;49(12):963-970
INTRODUCTION:
To describe the maternal and fetal outcomes in systemic lupus erythematosus (SLE) pregnancies followed-up in a single tertiary referral centre.
METHODS:
We performed a retrospective cohort study of 75 SLE pregnancies who were followed up in Singapore General Hospital over a 16-year period from 2000 to 2016. Adverse fetal and maternal outcomes including preterm delivery, miscarriages, fetal growth restriction, congenital heart block, neonatal lupus, pre-eclampsia and SLE flares were obtained from the medical records.
RESULTS:
The mean age at conception was 32 years old (SD 3.8). The mean SLE disease duration was 5.9 years (SD 5.2). The majority (88%) had quiescent SLE disease activity at baseline. Most pregnancies resulted in a live birth (74.7%). The mean gestational age at birth was 37.4 weeks (SD 3.4). Adverse fetal outcomes occurred in 53.3%. Preterm delivery (33.9%), miscarriages (20%) and fetal growth restriction (17.3%) were the most frequent adverse fetal outcomes. There was 1 neonatal death and SLE flares occurred in a third (33%). In the subgroup of SLE pregnancies with antiphospholipid syndrome, there were higher SLE flare rates (40%) and adverse fetal outcomes occurred in 8 pregnancies (80%). There were no predictive factors identified for all adverse fetal and maternal outcomes. In the subgroup analysis of preterm delivery, anti-Ro (SS-A) antibody positivity and hydroxychloroquine treatment were associated with a lower risk of preterm delivery.
CONCLUSION
Although the majority had quiescent SLE disease activity at baseline, SLE pregnancies were associated with high rates of adverse fetal and maternal outcomes.
6.Comparison of Caesarean sections and instrumental deliveries at full cervical dilatation: a retrospective review.
Pei Shan TAN ; Jarrod Kah Hwee TAN ; Eng Loy TAN ; Lay Kok TAN
Singapore medical journal 2019;60(2):75-79
INTRODUCTION:
This study aimed to compare instrumental vaginal deliveries (IDs) and Caesarean sections (CSs) performed at full cervical dilatation, including factors influencing delivery and differences in maternal and neonatal outcomes.
METHODS:
A retrospective review was conducted of patients who experienced a prolonged second stage of labour at Singapore General Hospital from 2010 to 2012. A comparison between CS and ID was made through analysis of maternal/neonatal characteristics and peripartum outcomes.
RESULTS:
Of 253 patients who required intervention for a prolonged second stage of labour, 71 (28.1%) underwent CS and 182 (71.9%) underwent ID. 5 (2.0%) of the patients who underwent CS had failed ID. Of the maternal characteristics considered, ethnicity was significantly different. Induction of labour and intrapartum epidural did not influence delivery type. 70.4% of CSs occurred outside office hours, compared with 52.7% of IDs (p = 0.011). CS patients experienced a longer second stage of labour (p < 0.001). Babies born via CS were heavier (p < 0.001), while the ID group had a higher proportion of occipitoanterior presentations (p < 0.001). Estimated maternal blood loss was higher with CSs (p < 0.001), but neonatal outcomes were similar.
CONCLUSION
More than one in four parturients requiring intervention for a prolonged second stage of labour underwent emergency CS. Low failed instrumentation rates and larger babies in the CS group suggest accurate diagnoses of cephalopelvic disproportion. The higher incidence of CS after hours suggests trainee reluctance to attempt ID. There were no clinically significant differences in maternal and neonatal morbidity.
Adult
;
Cesarean Section
;
methods
;
statistics & numerical data
;
Databases, Factual
;
Delivery, Obstetric
;
Emergency Medical Services
;
Extraction, Obstetrical
;
methods
;
statistics & numerical data
;
Female
;
Humans
;
Labor Stage, First
;
Labor Stage, Second
;
Obstetrical Forceps
;
Pregnancy
;
Retrospective Studies
;
Risk Factors
;
Singapore
;
Young Adult
7.BNT162B2 COVID-19 mRNA vaccination did not promote substantial anti-syncytin-1 antibody production nor mRNA transfer to breast milk in an exploratory pilot study.
Citra N Z MATTAR ; Winston KOH ; Yiqi SEOW ; Shawn HOON ; Aparna VENKATESH ; Pradip DASHRAATH ; Li Min LIM ; Judith ONG ; Rachel LEE ; Nuryanti JOHANA ; Julie S L YEO ; David CHONG ; Lay Kok TAN ; Jerry K Y CHAN ; Mahesh CHOOLANI ; Paul Anantharajah TAMBYAH
Annals of the Academy of Medicine, Singapore 2022;51(5):309-312
8.Pregnancy Outcomes in COVID-19: A Prospective Cohort Study in Singapore.
Citra Nz MATTAR ; Shirin KALIMUDDIN ; Sapna P SADARANGANI ; Shephali TAGORE ; Serene THAIN ; Koh Cheng THOON ; Eliane Y HONG ; Abhiram KANNEGANTI ; Chee Wai KU ; Grace Mf CHAN ; Kelvin Zx LEE ; Jeannie Jy YAP ; Shaun S TAN ; Benedict YAN ; Barnaby E YOUNG ; David C LYE ; Danielle E ANDERSON ; Liying YANG ; Lin Lin SU ; Jyoti SOMANI ; Lay Kok TAN ; Mahesh A CHOOLANI ; Jerry Ky CHAN
Annals of the Academy of Medicine, Singapore 2020;49(11):857-869
INTRODUCTION:
Pregnant women are reported to be at increased risk of severe coronavirus disease 2019 (COVID-19) due to underlying immunosuppression during pregnancy. However, the clinical course of COVID-19 in pregnancy and risk of vertical and horizontal transmission remain relatively unknown. We aim to describe and evaluate outcomes in pregnant women with COVID-19 in Singapore.
METHODS:
Prospective observational study of 16 pregnant patients admitted for COVID-19 to 4 tertiary hospitals in Singapore. Outcomes included severe disease, pregnancy loss, and vertical and horizontal transmission.
RESULTS:
Of the 16 patients, 37.5%, 43.8% and 18.7% were infected in the first, second and third trimesters, respectively. Two gravidas aged ≥35 years (12.5%) developed severe pneumonia; one patient (body mass index 32.9kg/m2) required transfer to intensive care. The median duration of acute infection was 19 days; one patient remained reverse transcription polymerase chain reaction (RT-PCR) positive >11 weeks from diagnosis. There were no maternal mortalities. Five pregnancies produced term live-births while 2 spontaneous miscarriages occurred at 11 and 23 weeks. RT-PCR of breast milk and maternal and neonatal samples taken at birth were negative; placenta and cord histology showed non-specific inflammation; and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific immunoglobulins were elevated in paired maternal and umbilical cord blood (n=5).
CONCLUSION
The majority of COVID-19 infected pregnant women had mild disease and only 2 women with risk factors (obesity, older age) had severe infection; this represents a slightly higher incidence than observed in age-matched non-pregnant women. Among the women who delivered, there was no definitive evidence of mother-to-child transmission via breast milk or placenta.
Abortion, Spontaneous/epidemiology*
;
Adult
;
COVID-19/transmission*
;
COVID-19 Nucleic Acid Testing
;
COVID-19 Serological Testing
;
Cohort Studies
;
Disease Transmission, Infectious/statistics & numerical data*
;
Female
;
Fetal Blood/immunology*
;
Humans
;
Infectious Disease Transmission, Vertical/statistics & numerical data*
;
Live Birth/epidemiology*
;
Maternal Age
;
Milk, Human/virology*
;
Obesity, Maternal/epidemiology*
;
Placenta/pathology*
;
Pregnancy
;
Pregnancy Complications, Infectious/physiopathology*
;
Pregnancy Outcome/epidemiology*
;
Pregnancy Trimester, First
;
Pregnancy Trimester, Second
;
Prospective Studies
;
RNA, Viral/analysis*
;
Risk Factors
;
SARS-CoV-2
;
Severity of Illness Index
;
Singapore/epidemiology*
;
Umbilical Cord/pathology*
;
Young Adult