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Morris RK, Johnstone E, Lees C, Morton V, Smith G. Investigation and Care of a Small-for-Gestational-Age Fetus and a Growth Restricted Fetus (Green-top Guideline No. 31). BJOG 2024. [PMID: 38740546 DOI: 10.1111/1471-0528.17814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Key recommendations
All women should be assessed at booking (by 14 weeks) for risk factors for fetal growth restriction (FGR) to identify those who require increased surveillance using an agreed pathway [Grade GPP]. Findings at the midtrimester anomaly scan should be incorporated into the fetal growth risk assessment and the risk assessment updated throughout pregnancy. [Grade GPP]
Reduce smoking in pregnancy by identifying women who smoke with the assistance of carbon monoxide (CO) testing and ensuring in‐house treatment from a trained tobacco dependence advisor is offered to all pregnant women who smoke, using an opt‐out referral process. [Grade GPP]
Women at risk of pre‐eclampsia and/or placental dysfunction should take aspirin 150 mg once daily at night from 12+0–36+0 weeks of pregnancy to reduce their chance of small‐for‐gestational‐age (SGA) and FGR. [Grade A]
Uterine artery Dopplers should be carried out between 18+0 and 23+6 weeks for women at high risk of fetal growth disorders [Grade B]. In a woman with normal uterine artery Doppler and normal fetal biometry at the midtrimester scan, serial ultrasound scans for fetal biometry can commence at 32 weeks. Women with an abnormal uterine artery Doppler (mean pulsatility index > 95th centile) should commence ultrasound scans at 24+0–28+6 weeks based on individual history. [Grade B]
Women who are at low risk of FGR should have serial measurement of symphysis fundal height (SFH) at each antenatal appointment after 24+0 weeks of pregnancy (no more frequently than every 2 weeks). The first measurement should be carried out by 28+6 weeks. [Grade C]
Women in the moderate risk category are at risk of late onset FGR so require serial ultrasound scan assessment of fetal growth commencing at 32+0 weeks. For the majority of women, a scan interval of four weeks until birth is appropriate. [Grade B]
Maternity providers should ensure that they clearly identify the reference charts to plot SFH, individual biometry and estimated fetal weight (EFW) measurements to calculate centiles. For individual biometry measurements the method used for measurement should be the same as those used in the development of the individual biometry and fetal growth chart [Grade GPP]. For EFW the Hadlock three parameter model should be used. [Grade C]
Maternity providers should ensure that they have guidance that promotes the use of standard planes of acquisition and calliper placement when performing ultrasound scanning for fetal growth assessment. Quality control of images and measurements should be undertaken. [Grade C]
Ultrasound biometry should be carried out every 2 weeks in fetuses identified to be SGA [Grade C]. Umbilical artery Doppler is the primary surveillance tool and should be carried out at the point of diagnosis of SGA and during follow‐up as a minimum every 2 weeks. [Grade B]
In fetuses with an EFW between the 3rd and 10th centile, other features must be present for birth to be recommended prior to 39+0 weeks, either maternal (maternal medical conditions or concerns regarding fetal movements) or fetal compromise (a diagnosis of FGR based on Doppler assessment, fetal growth velocity or a concern on cardiotocography [CTG]) [Grade C]. For fetuses with an EFW or abdominal circumference less than the 10th centile where FGR has been excluded, birth or the initiation of induction of labour should be considered at 39+0 weeks after discussion with the woman and her partner/family/support network. Birth should occur by 39+6 weeks. [Grade B]
Pregnancies with early FGR (prior to 32+0 weeks) should be monitored and managed with input from tertiary level units with the highest level neonatal care. Care should be multidisciplinary by neonatology and obstetricians with fetal medicine expertise, particularly when extremely preterm (before 28 weeks) [Grade GPP]. Fetal biometry in FGR should be repeated every 2 weeks [Grade B]. Assessment of fetal wellbeing can include multiple modalities but must include computerised CTG and/or ductus venous. [Grade B]
In pregnancies with late FGR, birth should be initiated from 37+0 weeks to be completed by 37+6 weeks [Grade A]. Decisions for birth should be based on fetal wellbeing assessments or maternal indication. [Grade GPP]
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Taylor B, Cross-Sudworth F, Rimmer M, Quinn L, Morris RK, Johnston T, Morad S, Davidson L, Kenyon S. Induction of labour care in the UK: A cross-sectional survey of maternity units. PLoS One 2024; 19:e0297857. [PMID: 38416750 PMCID: PMC10901341 DOI: 10.1371/journal.pone.0297857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 01/10/2024] [Indexed: 03/01/2024] Open
Abstract
OBJECTIVES To explore local induction of labour pathways in the UK National Health Service to provide insight into current practice. DESIGN National survey. SETTING Hospital maternity services in all four nations of the UK. SAMPLE Convenience sample of 71 UK maternity units. METHODS An online cross-sectional survey was disseminated and completed via a national network of obstetrics and gynaecology specialist trainees (October 2021-March 2022). Results were analysed descriptively, with associations explored using Fisher's Exact and ANOVA. MAIN OUTCOME MEASURES Induction rates, criteria, processes, delays, incidents, safety concerns. RESULTS 54/71 units responded (76%, 35% of UK units). Induction rate range 19.2%-53.4%, median 36.3%. 72% (39/54) had agreed induction criteria: these varied widely and were not all in national guidance. Multidisciplinary booking decision-making was not reported by 38/54 (70%). Delays reported 'often/always' in hospital admission for induction (19%, 10/54) and Delivery Suite transfer once induction in progress (63%, 34/54). Staffing was frequently reported cause of delay (76%, 41/54 'often/always'). Delays triggered incident reports in 36/54 (67%) and resulted in harm in 3/54 (6%). Induction was an area of concern (44%, 24/54); 61% (33/54) reported induction-focused quality improvement work. CONCLUSIONS There is substantial variation in induction rates, processes and policies across UK maternity services. Delays appear to be common and are a cause of safety concerns. With induction rates likely to increase, improved guidance and pathways are critically needed to improve safety and experience of care.
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Affiliation(s)
- Beck Taylor
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Fiona Cross-Sudworth
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - Michael Rimmer
- Medical Research Council Centre for Reproductive Health, The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Laura Quinn
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
| | - R. Katie Morris
- Professor of Obstetrics and Maternal Fetal Medicine, Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
- Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
| | - Tracey Johnston
- Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
| | - Sharon Morad
- Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
| | - Louisa Davidson
- Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
| | - Sara Kenyon
- Professor of Evidence Based Maternity Care, Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom
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Heazell AE, Wilkinson J, Morris RK, Simpson N, Smith LK, Stacey T, Storey C, Higgins L. Mothers working to prevent early stillbirth study (MiNESS 20-28): a case-control study protocol. BMJ Open 2024; 14:e082835. [PMID: 38238057 DOI: 10.1136/bmjopen-2023-082835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2024] Open
Abstract
INTRODUCTION In the UK, 1600 babies die every year before, during or immediately after birth at 20-28 weeks' gestation. This bereavement has a similar impact on parental physical and psychological well-being to late stillbirth (>28 weeks' gestation). Improved understanding of potentially modifiable risk factors for late stillbirth (including supine going-to-sleep position) has influenced international clinical practice. Information is now urgently required to similarly inform clinical practice and aid decision-making by expectant mothers/parents, addressing inequalities in pregnancy loss between 20 and 28 weeks. METHODS AND ANALYSIS This study focuses on what portion of risk of pregnancy loss 20-28 weeks' gestation is associated with exposures amenable to public health campaigns/antenatal care adaptation. A case-control study of non-anomalous singleton baby loss (via miscarriage, stillbirth or early neonatal death) 20+0 to 27+6 (n=316) and randomly selected control pregnancies (2:1 ratio; n=632) at group-matched gestations will be conducted. Data is collected via participant recall (researcher-administered questionnaire) and extraction from contemporaneous medical records. Unadjusted/confounder-adjusted ORs will be calculated. Exposures associated with early stillbirth at OR≥1.5 will be detectable (p<0.05, β>0.80) assuming exposure prevalence of 30%-60%. ETHICS AND DISSEMINATION NHS research ethical approval has been obtained from the London-Seasonal research ethics committee (23/LO/0622). The results will be presented at international conferences and published in peer-reviewed open-access journals. Information from this study will enable development of antenatal care and education for healthcare professionals and pregnant people to reduce risk of early stillbirth. TRIAL REGISTRATION NUMBER NCT06005272.
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Affiliation(s)
- Alexander Edward Heazell
- Maternal and Fetal Health Research Centre, The University of Manchester, Manchester, UK
- St. Mary's Hospital, Manchester Academic Health Science Centre, Manchester, UK
| | - Jack Wilkinson
- Centre for Biostatistics, University of Manchester, Manchester, UK
| | - R Katie Morris
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Nigel Simpson
- Obstetrics and Gynaecology, University of Leeds, Leeds, UK
| | - Lucy K Smith
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Tomasina Stacey
- Florence Nightingale Faculty of Nursing, Midwifery and Palliative Care, King's College London, London, UK
| | | | - Lucy Higgins
- Maternal and Fetal Health Research Centre, The University of Manchester, Manchester, UK
- St. Mary's Hospital, Manchester Academic Health Science Centre, Manchester, UK
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4
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Liu B, Malone S, Knight T, Turvey-Haigh L, Castleman J, Morris RK, Al-Sakini N, Bradlow W, Thorne S, Steeds RP, Hudsmith LE, Moody WE. Utility of Exercise Stress Echocardiography for Prepregnancy Risk Stratification in Women With Left Heart Obstruction. Can J Cardiol 2024; 40:125-127. [PMID: 37722624 DOI: 10.1016/j.cjca.2023.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/29/2023] [Accepted: 09/03/2023] [Indexed: 09/20/2023] Open
Affiliation(s)
- Boyang Liu
- University of Birmingham, Birmingham, United Kingdom; University Hospital Birmingham, Birmingham, United Kingdom.
| | - Sean Malone
- University Hospital Birmingham, Birmingham, United Kingdom
| | - Tamlyn Knight
- University Hospital Birmingham, Birmingham, United Kingdom
| | | | - James Castleman
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, United Kingdom
| | - R Katie Morris
- University Hospital Birmingham, Birmingham, United Kingdom; Birmingham Women's and Children's NHS Foundation Trust, Birmingham, United Kingdom
| | | | | | - Sara Thorne
- Toronto General Hospital and University Health Network, Toronto, Ontario, Canada
| | - Richard P Steeds
- University of Birmingham, Birmingham, United Kingdom; University Hospital Birmingham, Birmingham, United Kingdom
| | | | - William E Moody
- University of Birmingham, Birmingham, United Kingdom; University Hospital Birmingham, Birmingham, United Kingdom
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5
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Ashworth D, Battersby C, Bick D, Green M, Hardy P, Leighton L, Magee LA, Maher A, McManus RJ, Moakes C, Morris RK, Nelson-Piercy C, Sparkes J, Rivero-Arias O, Webb A, Wilson H, Myers J, Chappell LC. A treatment strategy with nifedipine versus labetalol for women with pregnancy hypertension: study protocol for a randomised controlled trial (Giant PANDA). Trials 2023; 24:584. [PMID: 37700365 PMCID: PMC10496358 DOI: 10.1186/s13063-023-07582-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/11/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND Approximately one in ten women have high blood pressure during pregnancy. Hypertension is associated with adverse maternal and perinatal outcomes, and as treatment improves maternal outcomes, antihypertensive treatment is recommended. Previous trials have been unable to provide a definitive answer on which antihypertensive treatment is associated with optimal maternal and neonatal outcomes and the need for robust evidence evaluating maternal and infant benefits and risks remains an important, unanswered question for research and clinical communities. METHODS The Giant PANDA study is a pragmatic, open-label, multicentre, randomised controlled trial of a treatment initiation strategy with nifedipine (calcium channel blocker), versus labetalol (mixed alpha/beta blocker) in 2300 women with pregnancy hypertension. The primary objective is to evaluate if treatment with nifedipine compared to labetalol in women with pregnancy hypertension reduces severe maternal hypertension without increasing fetal or neonatal death or neonatal unit admission. Subgroup analyses will be undertaken by hypertension type (chronic, gestational, pre-eclampsia), diabetes (yes, no), singleton (yes, no), self-reported ethnicity (Black, all other), and gestational age at randomisation categories (11 + 0 to 19 + 6, 20 + 0 to 27 + 6, 28 + 0 to 34 + 6 weeks). A cost-effectiveness analysis using an NHS perspective will be undertaken using a cost-consequence analysis up to postnatal hospital discharge and an extrapolation exercise with a lifetime horizon conditional on the results of the cost-consequence analysis. DISCUSSION This trial aims to address the uncertainty of which antihypertensive treatment is associated with optimal maternal and neonatal outcomes. The trial results are intended to provide definitive evidence to inform guidelines and linked, shared decision-making tools, thus influencing clinical practice. TRIAL REGISTRATION EudraCT number: 2020-003410-12, ISRCTN: 12,792,616 registered on 18 November 2020.
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Affiliation(s)
- Danielle Ashworth
- Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, UK
| | - Cheryl Battersby
- Neonatal Medicine, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Debra Bick
- Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, UK
| | | | - Pollyanna Hardy
- National Perinatal Epidemiology Unit Clinical Trials Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Lisa Leighton
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Laura A Magee
- Institute of Women and Children's Health, King's College London, London, UK
| | - Alisha Maher
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Richard J McManus
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Catherine Moakes
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - R Katie Morris
- Birmingham Clinical Trials Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | | | - Jenie Sparkes
- Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, UK
| | - Oliver Rivero-Arias
- National Perinatal Epidemiology Unit Clinical Trials Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Andrew Webb
- Clinical Pharmacology, School of Cardiovascular and Metabolic Medicine & Sciences, King's College London British Heart Foundation Centre of Research Excellence, London, UK
| | - Hannah Wilson
- Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, UK
| | - Jenny Myers
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Lucy C Chappell
- Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, UK.
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Thompson SE, Prabhakar CRK, Creasey T, Stoll VM, Gurney L, Green J, Fox C, Morris RK, Thompson PJ, Thorne SA, Clift P, Hudsmith LE. Pregnancy outcomes in women following the Ross procedure. Int J Cardiol 2023; 371:135-139. [PMID: 36181953 DOI: 10.1016/j.ijcard.2022.09.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/20/2022] [Accepted: 09/26/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION The Ross procedure, where a pulmonary autograft (neoaorta) replaces the aortic valve, has excellent long-term outcomes in patients with congenital aortic valve disease. However, there are reports of neoaortic dilatation and dissection. An increasing number of women are wishing to become pregnant following the Ross procedure, but little is known about the occurrence and risks of neoaortic dilatation and complications in pregnancy. We investigated neoaorta function and outcomes in pregnancy following the Ross procedure. METHODS This retrospective study investigated women post-Ross procedure at a tertiary ACHD unit between 1997 and 2021. Imaging evaluated neoaortic root dimensions and regurgitation pre-, and post- pregnancy, compared with matched non-pregnant controls. Primary endpoints were change in neoaortic dimensions, degree of regurgitation and adverse maternal outcomes. RESULTS Nineteen pregnancies in 12 women were included. The mean change in neoaortic root diameter post-pregnancy was 1.8 mm (SD 3.4) (p = 0.017). There was no significant change in neoaortic dimensions in matched controls during follow-up. There were no cases of dissection, arrhythmia, acute coronary syndrome, or maternal mortality. Three deliveries were pre-term, including one emergency Caesarean section due to maternal cardiac decompensation, requiring aortic root replacement post-partum but there were no neonatal deaths. CONCLUSIONS Pregnancy following the Ross procedure is associated with neoaortic dilatation, and pregnancy is generally well tolerated. Although adverse maternal outcomes are uncommon, there are still rare cases of cardiac complications in and around the time of pregnancy. These findings emphasise the need for accessible pre-pregnancy counselling, risk stratification and careful surveillance through pregnancy by specialist cardio-obstetric multi-disciplinary teams.
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Affiliation(s)
- Sophie E Thompson
- Department of Adult Congenital Heart Disease, Queen Elizabeth Hospital, University Hospital, Birmingham, UK.
| | | | - Tristan Creasey
- Northwick Park Hospital, London North West University Healthcare NHS Trust, London, UK
| | - Victoria M Stoll
- Department of Adult Congenital Heart Disease, Queen Elizabeth Hospital, University Hospital, Birmingham, UK; Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Leo Gurney
- Department of Maternal and Fetal Medicine, Birmingham Women's and Children's Hospital, Birmingham, UK
| | - Jennifer Green
- Department of Adult Congenital Heart Disease, Queen Elizabeth Hospital, University Hospital, Birmingham, UK
| | - Caroline Fox
- Department of Maternal and Fetal Medicine, Birmingham Women's and Children's Hospital, Birmingham, UK
| | - R Katie Morris
- Department of Maternal and Fetal Medicine, Birmingham Women's and Children's Hospital, Birmingham, UK; Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Peter J Thompson
- Department of Maternal and Fetal Medicine, Birmingham Women's and Children's Hospital, Birmingham, UK
| | - Sara A Thorne
- Division of Cardiology, Pregnancy & Heart Disease Program, Mount Sinai Hospital & University Health Network, University of Toronto, Canada
| | - Paul Clift
- Department of Adult Congenital Heart Disease, Queen Elizabeth Hospital, University Hospital, Birmingham, UK
| | - Lucy E Hudsmith
- Department of Adult Congenital Heart Disease, Queen Elizabeth Hospital, University Hospital, Birmingham, UK
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Hodgetts Morton V, Toozs-Hobson P, Moakes CA, Middleton L, Daniels J, Simpson NAB, Shennan A, Israfil-Bayli F, Ewer AK, Gray J, Slack M, Norman JE, Lees C, Tryposkiadis K, Hughes M, Brocklehurst P, Morris RK. Monofilament suture versus braided suture thread to improve pregnancy outcomes after vaginal cervical cerclage (C-STICH): a pragmatic randomised, controlled, phase 3, superiority trial. Lancet 2022; 400:1426-1436. [PMID: 36273481 DOI: 10.1016/s0140-6736(22)01808-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/23/2022] [Accepted: 09/16/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND Miscarriage in the second trimester and preterm birth are significant global problems. Vaginal cervical cerclage is performed to prevent pregnancy loss and preterm birth. We aimed to determine the effectiveness of a monofilament suture thread compared with braided suture thread on pregnancy loss rates in women undergoing a cervical cerclage. METHODS C-STICH was a pragmatic, randomised, controlled, superiority trial done at 75 obstetric units in the UK. Women with a singleton pregnancy who received a vaginal cervical cerclage due to a history of pregnancy loss or premature birth, or if indicated by ultrasound, were centrally randomised (1:1) using minimisation to receive a monofilament suture or braided suture thread for their cervical cerclage. Women and outcome assessors were masked to allocation as far as possible. The primary outcome was pregnancy loss, defined as miscarriage, stillbirth, or neonatal death in the first week of life, analysed in the intention-to-treat population (ie, all women who were randomly assigned). Safety was also assessed in the intention-to-treat population. The trial was registered with ISRCTN, ISRCTN15373349. FINDINGS Between Aug 21, 2015, and Jan 28, 2021, 2049 women were randomly assigned to receive a monofilament suture (n=1025) or braided suture (n=1024). The primary outcome was ascertained in 1003 women in the monofilament suture group and 993 women in the braided suture group. Pregnancy loss occurred in 80 (8·0%) of 1003 women in the monofilament suture group and 75 (7·6%) of 993 women in the braided suture group (adjusted risk ratio 1·05 [95% CI 0·79 to 1·40]; adjusted risk difference 0·002 [95% CI -0·02 to 0·03]). INTERPRETATION Monofilament suture did not reduce rate of pregnancy loss when compared with a braided suture. Clinicians should use the results of this trial to facilitate discussions around the choice of suture thread to optimise outcomes. FUNDING National Institute of Health Research Health Technology Assessment Programme.
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Affiliation(s)
| | | | - Catherine A Moakes
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Lee Middleton
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | | | | | | | | | - Andrew K Ewer
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Jim Gray
- Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | | | | | | | | | - Max Hughes
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Peter Brocklehurst
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - R Katie Morris
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK; Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
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8
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Cauldwell M, Steer PJ, Adamson D, Alexander C, Allen L, Bhagra C, Bolger A, Bonner S, Calanchini M, Carroll A, Casey R, Curtis S, Head C, English K, Hudsmith L, James R, Joy E, Keating N, MacKiliop L, McAuliffe F, Morris RK, Mohan A, Von Klemperer K, Kaler M, Rees DA, Shetty A, Siddiqui F, Simpson L, Stocker L, Timmons P, Vause S, Turner HE. Pregnancies in women with Turner Syndrome: A retrospective multicentre UK study. BJOG 2021; 129:796-803. [PMID: 34800331 DOI: 10.1111/1471-0528.17025] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2021] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To determine the characteristics and outcomes of pregnancy in women with Turner Syndrome DESIGN: Retrospective 20-year cohort study (2000-2020) SETTING: 16 tertiary referral maternity units in the UK POPULATION OR SAMPLE: 81 women with Turner syndrome who became pregnant METHODS: Retrospective chart analysis MAIN OUTCOME MEASURES: Mode of conception, pregnancy outcomes RESULTS: We obtained data on 127 pregnancies in 81 women with a Turner phenotype. All non-spontaneous pregnancies (54/127 (42.5%)) were by egg donation. Only 9/31 (29%) of pregnancies in women with karyotype 45,X were spontaneous, compared with 53/66 (80.3%) with mosaic karyotype 45,X/46,XX (p<0.0001). Women with mosaic 45,X/46,XX were younger at first pregnancy by 5.5-8.5 years compared to other TS-karyotype groups (p<0.001), and more likely to have a spontaneous menarche (75.8% vs 50% or less, p=0.008). There were 17 miscarriages, 3 terminations of pregnancy, 2 stillbirths and 105 livebirths. Two women had aortic dissection (2.5%); both were 45,X karyotype, with bicuspid aortic valves and ovum donation pregnancies, one died. Another woman had an aortic root replacement within six months of delivery. 10/106 (9.4%) births with gestational age data were preterm and 22/96 (22.9%) with singleton birthweight/gestational age data weighed <10th centile. The caesarean section rate was 72/107 (67.3%). In only 73/127 (57.4%) of pregnancies was there documentation of cardiovascular imaging within 24 months prior to conceiving. CONCLUSIONS Pregnancy in women with TS is associated with major maternal cardiovascular risks and deserve thorough cardiovascular assessment and counselling prior to assisted or spontaneous pregnancy managed by a specialist team.
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Affiliation(s)
- Matthew Cauldwell
- Department of Obstetrics, Maternal Medicine Service, St George's Hospital, Blackshaw Road, London, SW17 0QT
| | - Philip J Steer
- Academic Department of Obstetrics and Gynaecology, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, United Kingdom
| | - Dawn Adamson
- Department of Cardiology, University Hospitals Coventry and Warwickshire, United Kingdom
| | | | - Lowri Allen
- Department of Endocrinology, Cardiff, Vale University Health Board
| | - Catriona Bhagra
- Department of Cardiology, Addenbrookes Hospital, Cambridge, United Kingdom
| | - Aidan Bolger
- Department of Adult Congenital Heart Disease, Glenfield Hospital, Leicester, United Kingdom
| | - Samantha Bonner
- Saint Mary's Managed Clinical Service, Manchester University Foundation Trust, Manchester
| | - Matilde Calanchini
- Department of Endocrinology, Oxford Centre for Diabetes, Endocrinology and Metabolism, Oxford University Hospitals NHS Foundation Trust
| | - Aisling Carroll
- Department of Congenital Cardiology, University Hospital Southampton NHS Foundation Trust
| | - Ruth Casey
- Department of Endocrinology, Addenbrookes Hospital, Cambridge
| | - Stephanie Curtis
- Adult Congenital Heart Disease Service, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Catherine Head
- Cardiology Department, Norwich University Hospital, Norfolk
| | - Kate English
- Department of Adult Congenital Heart Disease, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Lucy Hudsmith
- Department of Adult Congenital Heart Disease, University Hospitals Birmingham
| | - Rachael James
- Department of Cardiology, University Hospitals Sussex, Brighton
| | - Eleanor Joy
- Department of Adult Congenital Heart Disease, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Niamh Keating
- Department of Obstetrics, UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - Lucy MacKiliop
- Women's Centre, Oxford University Hospitals NHS Foundation Trust, NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Fionnuala McAuliffe
- Department of Obstetrics, UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - R Katie Morris
- Academic Department of Obstetrics, Birmingham Women's and Children's NHS Foundation Trust, University of Birmingham, Edgbaston, Birmingham, B15 2TG, UK
| | - Aarthi Mohan
- Department of Obstetrics, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom
| | | | | | - D Aled Rees
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, CF24 4HQ, UK
| | - Asha Shetty
- Department of Obstetrics, Aberdeen Royal Infirmary, Scotland
| | - Farah Siddiqui
- Department of Obstetrics, Royal Leicester Infirmary, Leicester, United Kingdom
| | | | | | - Paul Timmons
- Department of Obstetrics, Queen Anne Hospital, Southampton
| | - Sarah Vause
- Department of Adult Congenital Heart Disease, Glenfield Hospital, Leicester, United Kingdom
| | - Helen E Turner
- Saint Mary's Managed Clinical Service, Manchester University Foundation Trust, Manchester
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Pilarski N, Hodgetts-Morton V, Morris RK. Is cerclage safe and effective in preventing preterm birth in women presenting early in pregnancy with cervical dilatation? BMJ 2021; 375:e067470. [PMID: 34772657 DOI: 10.1136/bmj-2021-067470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- N Pilarski
- Institute of Applied Health Research, University of Birmingham, Birmingham B15 2TT, UK
- Birmingham Women's Hospital, Birmingham Women's and Children's NHS Foundation, Trust, Birmingham B15 2TG, UK
| | - V Hodgetts-Morton
- Institute of Applied Health Research, University of Birmingham, Birmingham B15 2TT, UK
- Birmingham Women's Hospital, Birmingham Women's and Children's NHS Foundation, Trust, Birmingham B15 2TG, UK
| | - R K Morris
- Institute of Applied Health Research, University of Birmingham, Birmingham B15 2TT, UK
- Birmingham Women's Hospital, Birmingham Women's and Children's NHS Foundation, Trust, Birmingham B15 2TG, UK
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Baker H, Pilarski N, Hodgetts-Morton VA, Morris RK. Comparison of visual and computerised antenatal cardiotocography in the prevention of perinatal morbidity and mortality. A systematic review and meta-analysis. Eur J Obstet Gynecol Reprod Biol 2021; 263:33-43. [PMID: 34171634 DOI: 10.1016/j.ejogrb.2021.05.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Antenatal cardiotocography (CTG) is used to monitor fetal well-being. There are two methods: visual (vCTG) or computerised (cCTG). An earlier Cochrane review compared the effects of both approaches on maternal and fetal outcomes. The objective of this systematic review was to update this search and identify studies not included in the Cochrane review. MATERIALS AND METHODS MEDLINE, EMBASE, CINAHL and MIDIRS databases were searched up to February 2021. We included randomised controlled trials (RCT) and non-randomised studies (NRS) of pregnant women receiving antenatal CTG with comparison of cCTG to vCTG and clinical outcomes. The Cochrane Risk of Bias Tool and Joanna Briggs Institute Critical Appraisal Checklist were used for quality assessment. Data is presented as risk ratios with 95% confidence intervals and I2 is used as the statistical measure of heterogeneity. RESULTS Three RCTs and three NRS were included. Meta-analysis of RCTs demonstrated a non-significant reduction in all-cause perinatal mortality (RR 0.23 [95%CI 0.04-1.30]), preventable perinatal mortality excluding congenital anomalies (RR 0.27 [95% CI 0.05-1.56]) and cesarean section (RR 0.91 [95%CI 0.68-1.22]). All RCTs included high-risk women and had a high risk of bias. There was one antenatal stillbirth across the three RCTs (n = 497). The NRS were at high-risk of bias and statistical analysis was not possible due to heterogeneity. Individual findings suggest reduced investigation and better prediction of neonatal outcomes with cCTG. CONCLUSIONS There is a non-significant reduction in perinatal mortality with cCTG. Despite no clear reduction in perinatal mortality and morbidity with cCTG, it is objective and may reduce time spent in hospital and further investigations for women.
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Affiliation(s)
- H Baker
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - N Pilarski
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; Birmingham Women's and Children's NHS Foundation Trust, B15 2TG Birmingham, UK
| | - V A Hodgetts-Morton
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; Birmingham Women's and Children's NHS Foundation Trust, B15 2TG Birmingham, UK
| | - R K Morris
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; Birmingham Women's and Children's NHS Foundation Trust, B15 2TG Birmingham, UK.
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Man R, Hodgetts Morton V, Devani P, Morris RK. Aspirin for preventing adverse outcomes in low risk nulliparous women with singleton pregnancies: A systematic review and meta-analysis. Eur J Obstet Gynecol Reprod Biol 2021; 262:105-112. [PMID: 34010722 DOI: 10.1016/j.ejogrb.2021.05.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/03/2021] [Accepted: 05/09/2021] [Indexed: 01/10/2023]
Abstract
OBJECTIVE To assess the effects of aspirin in pregnancy for the prevention of adverse outcomes in low risk, nulliparous women with singleton pregnancies. STUDY DESIGN Medline, Embase, CINAHL, the Cochrane library, Web of Science and clinicaltrials.gov were searched from inception until February 2020. Randomised controlled trials were eligible for inclusion where women were nulliparous, had singleton pregnancies and no other risk factors for pre-eclampsia such as diabetes or pre-existing hypertension. Primary outcomes were pre-eclampsia, gestational hypertension and eclampsia. Secondary outcomes included; pre-term birth, postpartum haemorrhage, antepartum haemorrhage, miscarriage, small for gestational age (SGA), fetal growth restriction (FGR), birthweight and further markers of maternal and neonatal morbidity and mortality. The results were combined into meta-analysis where appropriate. RESULTS Ten studies were eligible for inclusion involving 23,162 women. Two studies (involving 214 women) used aspirin doses of 100 mg, with the remainder using smaller doses. There was no significant difference found in the risk of developing pre-eclampsia between women receiving aspirin compared to no aspirin (relative risk [RR] 0.70, 95 % confidence interval [CI] 0.47-1.05, p = 0.08). Women receiving aspirin had a reduced risk of having a preterm birth <34 weeks (RR 0.50, 95 % CI 0.26-0.96, p = 0.04), and reduced risk of having a SGA neonate (RR 0.94, 95 % CI 0.89-1.00, p = 0.04). An increase in birthweight was seen when aspirin was received (mean difference 105.17 g, 95 % CI 12.38 g-197.96 g, p = 0.03) and there was no increase in risk of postpartum or antepartum haemorrhage in those receiving aspirin (RR 1.24, 95 % CI 0.90-1.71, p = 0.19 and RR 1.06, 95 % CI 0.66-1.70, p = 0.81 respectively). CONCLUSION The results did not demonstrate a significant difference amongst low risk nulliparous women in the risks of pre-eclampsia or gestational hypertensive disorders with aspirin administration. Although we found significantly improved fetal growth parameters and prevention of preterm birth in women receiving aspirin, there were few eligible studies, with those included generally providing low quality evidence and many studies using aspirin doses ≤100 mg, commenced late in pregnancy. More research in the form of a high quality randomised controlled trial is needed before recommendations can be made.
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Affiliation(s)
- Rebecca Man
- Birmingham Women's Hospital, Edgbaston, Birmingham, B15 2TG, United Kingdom.
| | - Victoria Hodgetts Morton
- Birmingham Women's Hospital, Edgbaston, Birmingham, B15 2TG, United Kingdom; Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom.
| | - Pooja Devani
- Birmingham Women's Hospital, Edgbaston, Birmingham, B15 2TG, United Kingdom.
| | - R Katie Morris
- Birmingham Women's Hospital, Edgbaston, Birmingham, B15 2TG, United Kingdom; Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom.
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Farmer N, Hillier M, Kilby MD, Hodgetts-Morton V, Morris RK. Outcomes in intervention and management of multiple pregnancies trials: A systematic review. Eur J Obstet Gynecol Reprod Biol 2021; 261:178-192. [PMID: 33964726 DOI: 10.1016/j.ejogrb.2021.04.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/19/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Twin pregnancy has risks of adverse outcomes for mother and baby. Data synthesis is required to gain evidence to aid recommendations but may be hampered by variations in outcome reporting. STUDY DESIGN Systematically review outcomes reported in twin pregnancy trials (PROSPERO - CRD42019133805). Searches were performed in MEDLINE, EMBASE, CINHAL, Cochrane library (inception-January 2019) for randomised control trials or their follow-up studies reporting prediction, prognosis, intervention or management outcomes in twin pregnancy. The study characteristics, outcomes definitions and measurements were extracted and descriptively analysed. RESULTS 49 RCTs and 8 follow-up studies evaluated 21 interventions, 1257 outcomes, categorised into 170 unique outcomes. 65 % of trials included all twin pregnancies, 12 % DCDA and 11 % MCDA only or MCMA and MCDA. Five (9 %) papers were prediction/ prognosis RCT's and 52 (91 %) related to an intervention. Of interventions, 40 (77 %) were medical, 34 (85 %) for preterm birth; 12 (23 %) surgical, 6 (50 %) related to TTTS interventions (83 % for monochrorionic studies). Commonest domains were: 'Neonatal' 77 %, 'Delivery' 70 % and 'Survival' 67 %. Least reported were longer term outcomes for 'Infant' or 'Parental'. CONCLUSIONS Twin pregnancy outcomes are diverse and complex. This is related to the need to address maternal, single and double fetal outcomes and different types of chorionicity. The lack of outcome standardisation in selection, definition and reporting hinders evidence synthesis and the selection of outcomes important to women and health care professionals thus limiting the effectiveness of research.
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Affiliation(s)
- Nicola Farmer
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; Birmingham Women's and Children's Hospital, Birmingham, UK
| | | | - Mark D Kilby
- Birmingham Women's and Children's Hospital, Birmingham, UK; Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Victoria Hodgetts-Morton
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; Birmingham Women's and Children's Hospital, Birmingham, UK
| | - R Katie Morris
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; Birmingham Women's and Children's Hospital, Birmingham, UK.
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13
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Mackie FL, Morris RK, Kilby MD. Authors' reply to: Letter to the Editor in response to 'Parental attachment and depressive symptoms in pregnancies complicated by twin-twin transfusion syndrome: a cohort study'. BMC Pregnancy Childbirth 2021; 21:241. [PMID: 33752627 PMCID: PMC7986028 DOI: 10.1186/s12884-021-03687-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/01/2021] [Indexed: 11/10/2022] Open
Abstract
In this correspondence we thank the authors for highlighting the importance of our work, and agree with the limitations they have raised regarding performing this study.
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Affiliation(s)
- Fiona L. Mackie
- Department of Obstetrics and Gynaecology, Worcestershire Acute NHS Trust, Royal Worcestershire Hospital, Charles Hastings Way, WR5 1DD Worcester, UK
| | - R. Katie Morris
- Institute of Applied Health Research, University of Birmingham, West Midlands Edgbaston, UK
- Fetal Medicine Centre, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham Women’s Hospital, Mindelsohn Way, Edgbaston, UK
| | - Mark D. Kilby
- Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Centre for Women’s and Children’s Health, Birmingham Health Partners, Birmingham, UK
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14
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Alrammaal HH, Batchelor HK, Chong HP, Hodgetts Morton V, Morris RK. Prophylactic perioperative cefuroxime levels in plasma and adipose tissue at the time of caesarean section (C-LACE): a protocol for a pilot experimental, prospective study with non-probability sampling to determine interpatient variability. Pilot Feasibility Stud 2021; 7:54. [PMID: 33602323 PMCID: PMC7890388 DOI: 10.1186/s40814-021-00794-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/08/2021] [Indexed: 11/16/2022] Open
Abstract
Background The aim of the C-LACE study is to measure cefuroxime concentration in plasma and adipose tissue of non-obese and obese pregnant women undergoing caesarean section. Methods This study plans to compare maternal cefuroxime concentrations (plasma and adipose tissue), at the time of skin incision and time of skin closure during a caesarean section from non-obese (body mass index BMI < 30 kg/m2) and obese (BMI ≥ 30 kg/m2) pregnant women. The incidence of post-surgical site infection will also be measured. At least 15 participants are required for each arm (non-obese vs obese) with a total of 30 participants. The study participants will be followed up between 30 and 40 days post-caesarean section to record details of any post-caesarean surgical infection to explore correlations between BMI, measured cefuroxime concentrations and post-caesarean infection rates. Discussion This pilot study will allow the development of a model testing the inter-patient variability in plasma and adipose tissue concentrations of cefuroxime. The results will facilitate the development of a larger study to determine whether differences in cefuroxime plasma and tissue concentration in obese and non-obese women can support the development of a physiologically based pharmacokinetic model. This model can then be used to propose dosing adjustments that can be used in a further trial to optimise cefuroxime dosing for women undergoing caesarean section. Trial registration ISRCTN Registry, ISRCTN17527512. Registered on 26 October 2020 Supplementary Information The online version contains supplementary material available at 10.1186/s40814-021-00794-3.
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Affiliation(s)
- Hanadi H Alrammaal
- School of Pharmacy, Institute of Clinical Sciences, Robert Aitken Building, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK. .,Clinical Pharmacy Department, College of Pharmacy, Umm Al-Qura University, Makkah, Makkah Province, Saudi Arabia.
| | - Hannah K Batchelor
- School of Pharmacy, Institute of Clinical Sciences, Robert Aitken Building, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Hsu P Chong
- Rosie Maternity Hospital, Robinson Way, Cambridge, CB2 0SQ, UK.,Department of Fetal and Maternal Medicine, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK
| | - Victoria Hodgetts Morton
- Department of Fetal and Maternal Medicine, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK.,Institute for Metabolic and Systems Research, University of Birmingham, Birmingham, UK
| | - R Katie Morris
- Department of Fetal and Maternal Medicine, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK.,Institute for Metabolic and Systems Research, University of Birmingham, Birmingham, UK
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15
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Mone F, Eberhardt RY, Morris RK, Hurles ME, McMullan DJ, Maher ER, Lord J, Chitty LS, Giordano JL, Wapner RJ, Kilby MD. COngenital heart disease and the Diagnostic yield with Exome sequencing (CODE) study: prospective cohort study and systematic review. Ultrasound Obstet Gynecol 2021; 57:43-51. [PMID: 32388881 DOI: 10.1002/uog.22072] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/26/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To determine the incremental yield of antenatal exome sequencing (ES) over chromosomal microarray analysis (CMA) or conventional karyotyping in prenatally diagnosed congenital heart disease (CHD). METHODS A prospective cohort study of 197 trios undergoing ES following CMA or karyotyping owing to CHD identified prenatally and a systematic review of the literature were performed. MEDLINE, EMBASE, CINAHL and ClinicalTrials.gov (January 2000 to October 2019) databases were searched electronically for studies reporting on the diagnostic yield of ES in prenatally diagnosed CHD. Selected studies included those with more than three cases, with initiation of testing based upon prenatal phenotype only and that included cases in which CMA or karyotyping was negative. The incremental diagnostic yield of ES was assessed in: (1) all cases of CHD; (2) isolated CHD; (3) CHD associated with extracardiac anomaly (ECA); and (4) CHD according to phenotypic subgroup. RESULTS In our cohort, ES had an additional diagnostic yield in all CHD, isolated CHD and CHD associated with ECA of 12.7% (25/197), 11.5% (14/122) and 14.7% (11/75), respectively (P = 0.81). The corresponding pooled incremental yields from 18 studies (encompassing 636 CHD cases) included in the systematic review were 21% (95% CI, 15-27%), 11% (95% CI, 7-15%) and 37% (95% CI, 18-56%), respectively. The results did not differ significantly when subanalysis was limited to studies including more than 20 cases, except for CHD associated with ECA, in which the incremental yield was greater (49% (95% CI, 17-80%)). In cases of CHD associated with ECA in the primary analysis, the most common extracardiac anomalies associated with a pathogenic variant were those affecting the genitourinary system (23/52 (44.2%)). The greatest incremental yield was in cardiac shunt lesions (41% (95% CI, 19-63%)), followed by right-sided lesions (26% (95% CI, 9-43%)). In the majority (68/96 (70.8%)) of instances, pathogenic variants occurred de novo and in autosomal dominant (monoallelic) disease genes. The most common (19/96 (19.8%)) monogenic syndrome identified was Kabuki syndrome. CONCLUSIONS There is an apparent incremental yield of prenatal ES in CHD. While the greatest yield is in CHD associated with ECA, consideration could also be given to performing ES in the presence of an isolated cardiac abnormality. A policy of routine application of ES would require the adoption of robust bioinformatic, clinical and ethical pathways. Copyright © 2020 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- F Mone
- West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
- Institute of Metabolism and Systems Research, College of Medical & Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | | | - R K Morris
- West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
- Institute of Metabolism and Systems Research, College of Medical & Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | | | - D J McMullan
- West Midlands Regional Genetics Service, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - E R Maher
- Department of Medical Genetics, University of Cambridge, Cambridge, UK
- NIHR Cambridge Biomedical Research Centre, Cambridge, UK
- Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - J Lord
- Wellcome Sanger Institute, Hinxton, UK
| | - L S Chitty
- London North Genomic Laboratory Hub, Great Ormond Street NHS Foundation Trust and UCL Great Ormond Street Institute of Child Health, London, UK
| | - J L Giordano
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Vagelos Medical Center, New York, NY, USA
| | - R J Wapner
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Vagelos Medical Center, New York, NY, USA
| | - M D Kilby
- West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
- Institute of Metabolism and Systems Research, College of Medical & Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
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16
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Morris RK, Mackie F, Garces AT, Knight M, Kilby MD. The incidence, maternal, fetal and neonatal consequences of single intrauterine fetal death in monochorionic twins: A prospective observational UKOSS study. PLoS One 2020; 15:e0239477. [PMID: 32956426 PMCID: PMC7505445 DOI: 10.1371/journal.pone.0239477] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/07/2020] [Indexed: 12/01/2022] Open
Abstract
Objective Report maternal, fetal and neonatal complications associated with single intrauterine fetal death (sIUFD) in monochorionic twin pregnancies. Design Prospective observational study. Setting UK. Population 81 monochorionic twin pregnancies with sIUFD after 14 weeks gestation, irrespective of cause. Methods UKOSS reporters submitted data collection forms using data from hospital records. Main outcome measures Aetiology of sIUFD; surviving co-twin outcomes: perinatal mortality, central nervous system (CNS) imaging, gestation and mode of delivery, neonatal outcomes; post-mortem findings; maternal outcomes. Results The commonest aetiology was twin-twin transfusion syndrome (38/81, 47%), “spontaneous” sIUFD (22/81, 27%) was second commonest. Death of the co-twin was common (10/70, 14%). Preterm birth (<37 weeks gestation) was the commonest adverse outcome (77%): half were spontaneous and half iatrogenic. Only 46/75 (61%) cases had antenatal CNS imaging, of which 33 cases had known results of which 7/33 (21%) had radiological findings suggestive of neurological damage. Postnatal CNS imaging revealed an additional 7 babies with CNS abnormalities, all born at <36 weeks, including all 4 babies exhibiting abnormal CNS signs. Major maternal morbidity was relatively common, with 6% requiring ITU admission, all related to infection. Conclusions Monochorionic twin pregnancies with single IUD are complex and require specialist care. Further research is required regarding optimal gestation at delivery of the surviving co-twin, preterm birth prevention, and classifying the cause of death in twin pregnancies. Awareness of the importance of CNS imaging, and follow-up, needs improvement.
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Affiliation(s)
- R. Katie Morris
- Institute of Applied Health Research, University of Birmingham, Edgbaston, West Midlands, United Kingdom
- Fetal Medicine Centre, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham Women’s Hospital, Mindelsohn Way, Edgbaston, United Kingdom
- * E-mail:
| | - Fiona Mackie
- Institute of Metabolism and Systems Research, College of Medical & Dental Sciences, University of Birmingham, United Kingdom
| | - Aurelio Tobías Garces
- Institute of Metabolism and Systems Research, College of Medical & Dental Sciences, University of Birmingham, United Kingdom
| | - Marian Knight
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Mark D. Kilby
- Fetal Medicine Centre, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham Women’s Hospital, Mindelsohn Way, Edgbaston, United Kingdom
- Institute of Metabolism and Systems Research, College of Medical & Dental Sciences, University of Birmingham, United Kingdom
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17
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Affiliation(s)
- Marian Knight
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - R Katie Morris
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Jenny Furniss
- UK Obstetric Surveillance System Steering Committee, National Perinatal Epidemiology Unit, Oxford, UK
| | - Lucy C Chappell
- School of Life Course Sciences, King's College London, London, London, UK
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18
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Gulati N, Mackie FL, Cox P, Marton T, Heazell A, Morris RK, Kilby MD. Cause of intrauterine and neonatal death in twin pregnancies (CoDiT): development of a novel classification system. BJOG 2020; 127:1507-1515. [PMID: 32359214 DOI: 10.1111/1471-0528.16291] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Twin pregnancies have a significantly higher perinatal mortality than singleton pregnancies. Current classification systems for perinatal death lack twin-specific categories, potentially leading to loss of important information regarding cause of death. We introduce and test a classification system designed to assign a cause of death in twin pregnancies (CoDiT). DESIGN Retrospective cross-sectional study. SETTING Tertiary maternity unit in England with a perinatal pathology service. POPULATION Twin pregnancies in the West Midlands affected by fetal or neonatal demise of one or both twins between 1 January 2005 and 31 December 2016 in which postmortem examination was undertaken. METHODS A multidisciplinary panel designed CoDiT by adapting the most appropriate elements of singleton classification systems. The system was tested by assigning cause of death in 265 fetal and neonatal deaths from 144 twin pregnancies. Cause of death was validated by another obstetrician blinded to the original classification. MAIN OUTCOME MEASURES Inter-rater, intra-rater, inter-disciplinary agreement and cause of death. RESULTS Cohen's Kappa demonstrated 'strong' (>0.8) inter-rater, intra-rater and inter-disciplinary agreement (95% CI 0.70-0.91). The commonest cause of death irrespective of chorionicity was the placenta; twin-to-twin transfusion syndrome (TTTS) was the commonest placental cause in monochorionic twins and acute chorioamnionitis in dichorionic twins. CONCLUSIONS This novel classification system records causes of death in twin pregnancies from postmortem reports with high inter-user agreement. We highlight differences in aetiology of death between monochorionic and dichorionic twins. TWEETABLE ABSTRACT New classification system for #twin cause of death 'CoDiT' shows high rater agreement.
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Affiliation(s)
- N Gulati
- Institute of Metabolism & Systems Research, College of Medical & Dental Sciences, University of Birmingham, Birmingham, UK.,Fetal Medicine Centre, Birmingham Women's & Children's Foundation Trust, Birmingham, UK
| | - F L Mackie
- Institute of Metabolism & Systems Research, College of Medical & Dental Sciences, University of Birmingham, Birmingham, UK.,Fetal Medicine Centre, Birmingham Women's & Children's Foundation Trust, Birmingham, UK
| | - P Cox
- Cellular Pathology Department, Birmingham Women's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - T Marton
- Cellular Pathology Department, Birmingham Women's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Aep Heazell
- Maternal and Fetal Health Research Centre, University of Manchester, Manchester, UK.,St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - R K Morris
- Fetal Medicine Centre, Birmingham Women's & Children's Foundation Trust, Birmingham, UK.,Institute of Applied Health Research, College of Medical & Dental Sciences, University of Birmingham, Birmingham, UK
| | - M D Kilby
- Institute of Metabolism & Systems Research, College of Medical & Dental Sciences, University of Birmingham, Birmingham, UK.,Fetal Medicine Centre, Birmingham Women's & Children's Foundation Trust, Birmingham, UK
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19
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Mackie FL, Pattison H, Jankovic J, Morris RK, Kilby MD. Parental attachment and depressive symptoms in pregnancies complicated by twin-twin transfusion syndrome: a cohort study. BMC Pregnancy Childbirth 2019; 20:4. [PMID: 31892359 PMCID: PMC6938629 DOI: 10.1186/s12884-019-2679-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 12/15/2019] [Indexed: 12/04/2022] Open
Abstract
Background Twin-twin transfusion syndrome (TTTS) is a highly morbid condition in which treatment exists, but the pregnancy remains high-risk until delivery. It may have serious sequelae, including fetal death, and in the longer term, neurodevelopmental problems. The aim of this study is to assess antenatal and postnatal parental attachment and depressive symptoms in those with pregnancies affected by TTTS. Methods Couples attending for fetoscopic laser ablation treatment of TTTS were asked to complete Condon’s Maternal/Paternal Antenatal/Postnatal Attachment Scale as appropriate, and the Edinburgh Depression Scale the day before ablation, 4 weeks post-ablation, and 6–10 weeks postnatally. Results 25/27 couples completed the pre-ablation questionnaire (median gestational age 19 + 3 weeks [interquartile range 18 + 2–20 + 6]). 8/18 eligible couples returned the post-ablation questionnaire. 5/17 eligible couples returned the postnatal questionnaire. There was no significant difference in parento-fetal attachment when mothers were compared to fathers at each time point, however parento-fetal attachment did increase over time in mothers (p = 0.004), but not fathers. Mothers reported more depressive symptoms antenatally compared to fathers (p < 0.02), but there was no difference postnatally. 50% women reported Edinburgh Depression Scale scores above the cut-off (≥15) 4 weeks post-ablation. Over time maternal depressive symptoms decreased (p = 0.006), however paternal depressive symptoms remained the same. Conclusions This is the first attachment and depression study in a UK cohort of parents with pregnancies affected by TTTS. Although this was a small cohort and the questionnaires used had not been validated in these circumstances, the results suggest that centres caring for these couples should be aware of the risk of maternal and paternal antenatal depression, and screen and refer for additional psychological support. Further work is needed in larger cohorts. Trial registration ISRCTN 13114861 (retrospectively registered).
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Affiliation(s)
- Fiona L Mackie
- Centre for Women's & Children's Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK. .,Birmingham Women's and Children's NHS Foundation Trust, Mindelsohn Way, Edgbaston, B15 2TG, UK.
| | - Helen Pattison
- School of Life and Health Sciences, Aston University, Birmingham, B4 7ET, UK
| | - Jelena Jankovic
- Mother and Baby Unit, Barberry, Birmingham and Solihull Mental Health NHS Foundation Trust, 25 Vincent Drive, Edgbaston, Birmingham, B15 2FG, UK
| | - R Katie Morris
- Centre for Women's & Children's Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK.,Birmingham Women's and Children's NHS Foundation Trust, Mindelsohn Way, Edgbaston, B15 2TG, UK
| | - Mark D Kilby
- Centre for Women's & Children's Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK.,Birmingham Women's and Children's NHS Foundation Trust, Mindelsohn Way, Edgbaston, B15 2TG, UK
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Stoll VM, Drury NE, Thorne S, Selman T, Clift P, Chong H, Thompson PJ, Morris RK, Hudsmith LE. Pregnancy Outcomes in Women With Transposition of the Great Arteries After an Arterial Switch Operation. JAMA Cardiol 2019; 3:1119-1122. [PMID: 30193342 DOI: 10.1001/jamacardio.2018.2747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance A growing number of women are approaching childbearing age after arterial switch surgery for transposition of the great arteries. Prepregnancy counseling requires updated knowledge of the additional cardiovascular risks pregnancy poses for this cohort of women and the potential effect on their offspring; however, to our knowledge, this information is currently unknown. Objective To determine the pregnancy outcomes of women with transposition of the great arteries after an arterial switch operation, as well as the outcomes of their offspring. Design, Setting, and Participants This cohort study assessed women who had had arterial switch surgery from 1985 to the present and who were 16 years or older as of January 2018. All women with a previous arterial switch surgery for transposition of the great arteries with completed or ongoing pregnancy were included. Data were collected in a level 1 congenital cardiology center and joint obstetrics-cardiology clinic in Birmingham, United Kingdom. Exposures Patients were assessed before, during, and after pregnancy. Main Outcomes and Measures Adverse maternal cardiac events (arrhythmia, heart failure, aortic dissection, or acute coronary syndrome) and aortic root dilatation, aortic regurgitation, and left ventricular function before and after pregnancy were the main outcomes. Mode of delivery and fetal outcomes were considered secondary outcomes. Results A total of 25 pregnancies were identified in 15 women; 8 women had had 1 pregnancy, while 7 were multiparous. There were no adverse maternal cardiac events. Before pregnancy, 8 women (53%) had no aortic regurgitation, 1 (7%) had a trivial degree of regurgitation, 4 (26%) had mild regurgitation, and 2 (14%) had moderate regurgitation. After pregnancies, 1 woman (7%) had minor progression of aortic regurgitation. Five women (36%) had mild neoaortic root dilatation prepregnancy, but none developed progressive dilatation in the first year post-partum. A total of 24 pregnancies were completed by the end of the study, with all infants born alive and well. Nineteen modes of delivery were known; there were 7 cesarean deliveries (37%), of which 2 (11%) were recommended for aortic dilatation and 5 (26%) for obstetric indications or maternal choice. Conclusions and Relevance Pregnancy is well tolerated after arterial switch operation; no adverse maternal cardiac events or early progression of neoaortic root dilatation or aortic regurgitation were observed in this study. These results provide evidence to allow reassurance of women with previous arterial switch surgery who are planning pregnancies.
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Affiliation(s)
- Victoria M Stoll
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom.,Adult Congenital Heart Disease Unit, Queen Elizabeth Hospital, Birmingham, United Kingdom
| | - Nigel E Drury
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom.,Department of Paediatric Cardiac Surgery, Birmingham Children's Hospital, Birmingham, United Kingdom
| | - Sara Thorne
- Adult Congenital Heart Disease Unit, Queen Elizabeth Hospital, Birmingham, United Kingdom
| | - Tara Selman
- Department of Obstetrics, University Hospital Southampton, Southampton, United Kingdom
| | - Paul Clift
- Adult Congenital Heart Disease Unit, Queen Elizabeth Hospital, Birmingham, United Kingdom
| | - Hsu Chong
- Department of Obstetrics, Birmingham Women's Hospital, Birmingham, United Kingdom.,Institute of Metabolism and System's Research, University of Birmingham, Birmingham, United Kingdom
| | - Peter J Thompson
- Department of Obstetrics, Birmingham Women's Hospital, Birmingham, United Kingdom
| | - R Katie Morris
- Department of Obstetrics, Birmingham Women's Hospital, Birmingham, United Kingdom.,Institute of Metabolism and System's Research, University of Birmingham, Birmingham, United Kingdom
| | - Lucy E Hudsmith
- Adult Congenital Heart Disease Unit, Queen Elizabeth Hospital, Birmingham, United Kingdom
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Alrammaal HH, Batchelor HK, Morris RK, Chong HP. Efficacy of perioperative cefuroxime as a prophylactic antibiotic in women requiring caesarean section: A systematic review. Eur J Obstet Gynecol Reprod Biol 2019; 242:71-78. [PMID: 31569027 DOI: 10.1016/j.ejogrb.2019.08.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/23/2019] [Accepted: 08/30/2019] [Indexed: 11/19/2022]
Abstract
Intravenous (IV) Cefuroxime (CFX) is widely used in Caesarean Section (CS) as a prophylactic antibiotic. The objective of this systematic review to compare CFX concentration in maternal blood and adipose tissue with the incidence of surgical site infection (SSI) following IV CFX in non-obese and obese women undergoing CS. A search in Medline, EMBASE, Cochrane, Web of Science, CINHAL Plus, Scopus and Google Scholar was conducted without language or date restrictions. Published articles or abstracts reporting CFX concentration or rates of SSI following CFX IV administration in adult women requiring CS were included. Studies were screened by title and abstract. Quality of studies was assessed via the ClinPK Statement checklist (Pharmacokinetics studies), or Joanna Briggs Institute Critical Appraisal Tools (SSI studies). The Cochrane Effective Practice and Organisation of Care checklist evaluated the risk of bias (SSI studies). There were no studies evaluating CFX concentrations in obese women undergoing CS. For non-obese women, CFX plasma concentrations ranged from 9.85 to 95.25 mg/L within 30-60 min of administration (1500 mg dose; 4 articles, n = 108 women). Plasma CFX concentrations were above the minimum inhibitory concentration (8 mg/L) for up to 3 h post-dose. No studies reported on CFX concentration in adipose tissue. Reported rates of SSI were 4.7% and 6.8% after administration of a single 1500 mg dose of CFX administrated after cord clamping (n = 144 women). There is limited data on pharmacokinetics of CFX for CS. There were no studies that reported CFX concentrations or SSI in obese women.
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Affiliation(s)
- Hanadi H Alrammaal
- Clinical Pharmacy department, Collage of Pharmacy, Umm Al-Qura University, Mecca, Mecca Province, Saudi Arabia; School of Pharmacy, Institute of Clinical Sciences, Robert Aitken Building, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom.
| | - Hannah K Batchelor
- School of Pharmacy, Institute of Clinical Sciences, Robert Aitken Building, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom.
| | - R Katie Morris
- Department of Fetal and Maternal Medicine, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, United Kingdom; Institute for Metabolic and Systems Research, University of Birmingham, Birmingham, United Kingdom.
| | - Hsu P Chong
- Department of Fetal and Maternal Medicine, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, United Kingdom; Institute for Metabolic and Systems Research, University of Birmingham, Birmingham, United Kingdom.
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Arif S, Choudhary A, Clift PF, Morris RK, Selman TJ, Bowater SE, Hudsmith LE, Thompson PJ, Thorne SA. Correction to: Pregnancy outcomes in patients with a fontan circulation and proposal for a risk-scoring system: single Centre experience. J Congenit Heart Dis 2019. [DOI: 10.1186/s40949-019-0027-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mackie FL, Whittle R, Morris RK, Hyett J, Riley RD, Kilby MD. First-trimester ultrasound measurements and maternal serum biomarkers as prognostic factors in monochorionic twins: a cohort study. Diagn Progn Res 2019; 3:9. [PMID: 31093579 PMCID: PMC6507122 DOI: 10.1186/s41512-019-0054-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/20/2019] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Monochorionic twin pregnancies are at high risk of adverse outcomes, but it is not possible to predict which pregnancies will develop complications. The aim of the study was to evaluate, in monochorionic twin pregnancies, whether first-trimester ultrasound (nuchal translucency [NT], crown-rump length [CRL]), and maternal serum biomarkers (alpha-fetoprotein [AFP], soluble fms-like tyrosine kinase-1 [sFlt-1] and placental growth factor [PlGF]), are prognostic factors for fetal adverse outcome composite, twin-twin transfusion syndrome (TTTS), growth restriction, and intrauterine fetal death (IUFD). METHODS A cohort study of 177 monochorionic diamniotic twin pregnancies. Independent prognostic ability of each factor was assessed by multivariable logistic regression, adjusting for standard prognostic factors. Factors were analysed as continuous data; thus, the reported ORs relate to either 1% change in NT or CRL inter-twin percentage discordance or one unit of measure in each serum biomarker. RESULTS The odds of the fetal adverse outcome composite were significantly associated with increased NT inter-twin percentage discordance (adjusted OR 1.03 [95% CI 1.01, 1.06]) and CRL inter-twin percentage discordance (adjusted OR 1.17 [95% CI 1.07, 1.29]). TTTS was significantly associated with increased NT discordance (adjusted OR 1.06 [95% CI 1.03, 1.10]) and decreased PlGF (adjusted OR 0.42 [95% CI 0.19, 0.93]). Antenatal growth restriction was significantly associated with increased CRL discordance (adjusted OR 1.20 [95% CI 1.08, 1.34]). Single and double IUFD were associated with decreased PlGF (adjusted OR 0.34 [95% CI 0.12, 0.98]) and (adjusted OR 0.18 [95%CI 0.05, 0.58]) respectively. CONCLUSIONS This study has identified potential individual prognostic factors in the first trimester (fetal biometric and maternal serum biomarkers) that show promise but require further robust evaluation in a larger, prospective series of MC twin pregnancies, so that their usefulness both individually and in combination can be defined. TRIAL REGISTRATION ISRCTN 13114861 (retrospectively registered).
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Affiliation(s)
- Fiona L. Mackie
- Centre for Women’s and Newborn Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT UK
- Fetal Medicine Department, Birmingham Women’s and Children’s NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG UK
| | - Rebecca Whittle
- Centre for Prognosis Research, Research Institute for Primary Care & Health Sciences, Keele University, Keele, Staffordshire ST5 5BG UK
| | - R. Katie Morris
- Centre for Women’s and Newborn Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT UK
- Fetal Medicine Department, Birmingham Women’s and Children’s NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG UK
| | - Jon Hyett
- Department of Women and Babies, Royal Alfred Hospital, University of Sydney, Sydney, Australia
| | - Richard D. Riley
- Centre for Prognosis Research, Research Institute for Primary Care & Health Sciences, Keele University, Keele, Staffordshire ST5 5BG UK
| | - Mark D. Kilby
- Centre for Women’s and Newborn Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT UK
- Fetal Medicine Department, Birmingham Women’s and Children’s NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG UK
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Mackie FL, Morris RK, Kilby MD. Reply to: Twin-twin transfusion syndrome: need for mechanistic studies. Am J Obstet Gynecol 2019; 220:508. [PMID: 30742824 DOI: 10.1016/j.ajog.2019.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/03/2019] [Indexed: 11/16/2022]
Affiliation(s)
- Fiona L Mackie
- Centre for Women's & Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Mindelsohn Way Edgbaston, Birmingham, B15 2TT, UK.
| | - R Katie Morris
- Centre for Women's & Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK; West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Mindelsohn Way, Edgbaston, B15 2TG, UK
| | - Mark D Kilby
- Centre for Women's & Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK; West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Mindelsohn Way, Edgbaston, B15 2TG, UK
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Mackie FL, Rigby A, Morris RK, Kilby MD. Prognosis of the co-twin following spontaneous single intrauterine fetal death in twin pregnancies: a systematic review and meta-analysis. BJOG 2018; 126:569-578. [PMID: 30461179 DOI: 10.1111/1471-0528.15530] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Single intrauterine fetal death affects approximately 6% of twin pregnancies and can have serious sequelae for the surviving co-twin. OBJECTIVES Determine the prognosis of the surviving co-twin following spontaneous single intrauterine fetal death to aid counselling patients and highlight future research areas. SEARCH STRATEGY Medline, Embase, Web of Science, and Cochrane Library, from 1980 to June 2017. SELECTION CRITERIA Studies of five or more cases of spontaneous single intrauterine fetal death after 14 weeks gestation, in diamniotic twin pregnancies. DATA COLLECTION AND ANALYSIS Summary event rates were calculated and stratified by chorionicity. Monochorionic and dichorionic twins, and sub-groups, were compared by odds ratios. MAIN RESULTS In monochorionic twins, when single intrauterine fetal death occurred at less than 28 weeks' gestation, this significantly increased the rate of co-twin intrauterine fetal death [odds ratio (OR) 2.31, 95% confidence interval (CI) 1.02-5.25, I2 = 0.0%, 12 studies, 184 pregnancies] and neonatal death (OR 2.84, 95% CI 1.18-6.77, I2 = 0.0%, 10 studies, 117 pregnancies) compared with when the single intrauterine fetal death occurred at more than 28 weeks' gestation. Neonatal death in monochorionic twins was significantly higher if the pregnancy was complicated by fetal growth restriction (OR 4.83, 95% CI 1.14-20.47, I2 = 0.0%, six studies, 60 pregnancies) or preterm birth (OR 4.95, 95% CI 1.71-14.30, I2 = 0.0%, 11 studies, 124 pregnancies). Abnormal antenatal brain imaging was reported in 20.0% (95% CI 12.8-31.1, I2 = 21.9%, six studies, 116 pregnancies) of surviving monochorionic co-twins. The studies included in the meta-analysis demonstrated small study effects and possible selection bias. CONCLUSIONS Preterm birth was the commonest adverse outcome affecting 58.5 and 53.7% of monochorionic and dichorionic twin pregnancies. Outcomes regarding brain imaging and neurodevelopmental comorbidity are an important area for future research, but meta-analysis may be limited due to different methods of assessment. TWEETABLE ABSTRACT Preterm birth is the highest risk in single co-twin death. Abnormal antenatal brain imaging was found in 1/5 surviving MC twins.
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Affiliation(s)
- F L Mackie
- Centre for Women's and Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - A Rigby
- Flinders Medical Centre, Adelaide, SA, Australia
| | - R K Morris
- Centre for Women's and Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.,West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, UK
| | - M D Kilby
- Centre for Women's and Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.,West Midlands Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Edgbaston, UK
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Mackie FL, Hall MJ, Morris RK, Kilby MD. Early prognostic factors of outcomes in monochorionic twin pregnancy: systematic review and meta-analysis. Am J Obstet Gynecol 2018; 219:436-446. [PMID: 29763608 DOI: 10.1016/j.ajog.2018.05.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/11/2018] [Accepted: 05/07/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Monochorionic twin pregnancies are high-risk, however at present, no screening test is available to predict which monochorionic twin pregnancy will develop complications. OBJECTIVE We sought to assess ability of first-trimester pregnancy-related factors (ultrasound measurements, maternal characteristics, biomarkers) to predict complications in monochorionic twin pregnancies. DATA SOURCES Data sources were MEDLINE, Embase, ISI Web of Science, CINAHL, the Cochrane Central Registration of Controlled Trials and Research Registers, and Google Scholar, from inception to May 12, 2017. Gray literature and bibliographies of articles were checked. STUDY ELIGIBILITY CRITERIA Studies that reported ultrasound measurements, maternal characteristics, or potential biomarkers, measured in the first trimester in monochorionic-diamniotic twin pregnancies, where the potential prognostic ability between the variable and twin-twin transfusion syndrome, growth restriction, or intrauterine fetal death could be assessed, were included. STUDY APPRAISAL AND SYNTHESIS METHODS Quality assessment was evaluated using the Strengthening the Reporting of Observational Studies in Epidemiology checklist by 2 reviewers independently. For meta-analysis, odds ratios using a random effects model, or standardized mean difference were calculated. If a moderate association was found, the prognostic ability was evaluated by calculating the sensitivity and specificity. Risk of heterogeneity was reported as I2 and publication bias was visually assessed by funnel plots and quantitatively by Egger test. RESULTS In all, 48 studies were eligible for inclusion. Twenty meta-analyses could be performed. A moderate association was demonstrated in 3 meta-analyses, between: nuchal translucency >95th centile in one/both fetuses and twin-twin transfusion syndrome (odds ratio, 2.29 [95% confidence interval, 1.05-4.96], I2 = 6.6%, 4 studies, 615 pregnancies); crown-rump length discordance ≥10% and twin-twin transfusion syndrome (odds ratio, 2.43 [95% confidence interval, 1.13-5.21], I2 = 14.1%, 3 studies, 708 pregnancies); and maternal ethnicity and twin-twin transfusion syndrome (odds ratio, 2.12 [95% confidence interval, 1.17-3.83], I2 = 0.0%, 5 studies, 467 pregnancies), but none demonstrated a prognostic ability for any outcome under investigation. CONCLUSION It is not currently possible to predict adverse outcomes in monochorionic twin pregnancies. We have revealed a lack of research investigating first-trimester biomarkers in monochorionic twin pregnancies. Different assessment methods and definitions of each variable and outcome were an issue and this highlights the need for a large cohort study to evaluate these factors.
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Affiliation(s)
- Fiona L Mackie
- Center for Women's and Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom.
| | - Matthew J Hall
- Medical School, University of Birmingham, Birmingham, United Kingdom
| | - R Katie Morris
- Center for Women's and Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom; West Midlands Fetal Medicine Centre, Birmingham Women's and Children's National Health Service Foundation Trust, Edgbaston, United Kingdom
| | - Mark D Kilby
- Center for Women's and Children Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom; West Midlands Fetal Medicine Centre, Birmingham Women's and Children's National Health Service Foundation Trust, Edgbaston, United Kingdom
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Bilagi A, Burke DL, Riley RD, Mills I, Kilby MD, Katie Morris R. Association of maternal serum PAPP-A levels, nuchal translucency and crown-rump length in first trimester with adverse pregnancy outcomes: retrospective cohort study. Prenat Diagn 2017; 37:705-711. [PMID: 28514830 DOI: 10.1002/pd.5069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Are first trimester serum pregnancy-associated plasma protein-A (PAPP-A), nuchal translucency (NT) and crown-rump length (CRL) prognostic factors for adverse pregnancy outcomes? METHOD Retrospective cohort, women, singleton pregnancies (UK 2011-2015). Unadjusted and multivariable logistic regression. OUTCOMES small for gestational age (SGA), pre-eclampsia (PE), preterm birth (PTB), miscarriage, stillbirth, perinatal mortality and neonatal death (NND). RESULTS A total of 12 592 pregnancies: 852 (6.8%) PTB, 352 (2.8%) PE, 1824 (14.5%) SGA, 73 (0.6%) miscarriages, 37(0.3%) stillbirths, 73 perinatal deaths (0.6%) and 38 (0.30%) NND. Multivariable analysis: lower odds of SGA [adjusted odds ratio (aOR) 0.88 (95% CI 0.85,0.91)], PTB [0.92 (95%CI 0.88,0.97)], PE [0.91 (95% CI 0.85,0.97)] and stillbirth [0.71 (95% CI 0.52,0.98)] as PAPP-A increases. Lower odds of SGA [aOR 0.79 (95% CI 0.70,0.89)] but higher odds of miscarriage [aOR 1.75 95% CI (1.12,2.72)] as NT increases, and lower odds of stillbirth as CRL increases [aOR 0.94 95% CI (0.89,0.99)]. Multivariable analysis of three factors together demonstrated strong associations: a) PAPP-A, NT, CRL and SGA, b) PAPP-A and PTB, c) PAPP-A, CRL and PE, d) NT and miscarriage. CONCLUSIONS Pregnancy-associated plasma protein-A, NT and CRL are independent prognostic factors for adverse pregnancy outcomes, particularly PAPP-A and SGA with lower PAPP-A associated with increased risk. © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Ashwini Bilagi
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.,Centre for Women and New-born Health, Birmingham Health Partners, Birmingham, UK
| | - Danielle L Burke
- Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK
| | - Richard D Riley
- Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK
| | - Ian Mills
- Centre for Women and New-born Health, Birmingham Health Partners, Birmingham, UK.,Clinical Biochemistry, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
| | - Mark D Kilby
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.,Centre for Women and New-born Health, Birmingham Health Partners, Birmingham, UK.,Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
| | - R Katie Morris
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.,Centre for Women and New-born Health, Birmingham Health Partners, Birmingham, UK.,Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
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Mackie FL, Morris RK, Kilby MD. The prediction, diagnosis and management of complications in monochorionic twin pregnancies: the OMMIT (Optimal Management of Monochorionic Twins) study. BMC Pregnancy Childbirth 2017; 17:153. [PMID: 28549467 PMCID: PMC5446741 DOI: 10.1186/s12884-017-1335-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/19/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Monochorionic twin pregnancies are at increased risk of complications due to sharing a single placenta and potentially developing unbalanced vascular anastomoses. Complications include twin-twin transfusion syndrome (TTTS) which affects 10-15% monochorionic twins, and if untreated has a 70-90% perinatal loss rate. We are currently unable to predict which twins will develop complications or to what severity. We have previously shown differences in angiogenic and placental growth factors in maternal blood in pregnancies complicated by TTTS compared to twin pregnancies not complicated by TTTS but matched for gestation. There is also evidence to suggest that abnormal ultrasound measurements recorded in the first trimester (nuchal translucency and crown-rump length) may be associated with severe TTTS later in pregnancy, however the detection rate is only reported as 52%. We hypothesize that if these changes precede the development of the clinical syndrome, this may increase the sensitivity and specificity of detecting adverse pregnancy outcomes. METHODS This cohort study has retrospective and prospective elements. In the retrospective cohort we will measure factors (decided based on preliminary work and a systematic review and meta-analysis) in stored maternal blood samples taken in the first-trimester, extract first-trimester ultrasound measurements and match these to pregnancy outcome. The prospective cohort will be divided into a "screening" cohort and "complicated" cohort. The screening cohort will undergo serial maternal blood sampling at 12, 16 and 20 weeks; we will extract ultrasound measurements and match to pregnancy outcome. The complicated cohort will comprise of women referred to the Fetal Medicine Centre with complications of monochorionicity. If the decision is taken to undergo fetoscopic laser ablation we will take maternal blood samples and amniotic fluid samples pre- and post-laser treatment. The same factors will be measured in the prospective cohort as informed by the retrospective study. DISCUSSION This study aims to increase knowledge surrounding the pathology of complications in monochorionic twins, to aid future diagnosis and management. TRIAL REGISTRATION ISRCTN 13114861 (retrospectively registered).
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Affiliation(s)
- Fiona L Mackie
- Centre of Women's and Newborn's Health & Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,Fetal Medicine Centre, Birmingham Women's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK
| | - R Katie Morris
- Centre of Women's and Newborn's Health & Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.,Fetal Medicine Centre, Birmingham Women's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK
| | - Mark D Kilby
- Centre of Women's and Newborn's Health & Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK. .,Fetal Medicine Centre, Birmingham Women's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK.
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Morris RK, Bilagi A, Devani P, Kilby MD. Association of serum PAPP-A levels in first trimester with small for gestational age and adverse pregnancy outcomes: systematic review and meta-analysis. Prenat Diagn 2017; 37:253-265. [DOI: 10.1002/pd.5001] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/16/2016] [Accepted: 12/20/2016] [Indexed: 01/15/2023]
Affiliation(s)
- R. Katie Morris
- Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
- Fetal Medicine Centre; Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
- Centre for Women and New born Health; Birmingham Health Partners; Birmingham UK
| | - Ashwini Bilagi
- Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
- Fetal Medicine Centre; Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
- Centre for Women and New born Health; Birmingham Health Partners; Birmingham UK
| | - Pooja Devani
- Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
| | - Mark D. Kilby
- Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
- Fetal Medicine Centre; Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
- Centre for Women and New born Health; Birmingham Health Partners; Birmingham UK
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Dunn WB, Allwood JW, Van Mieghem T, Morris RK, Mackie FL, Fox CE, Kilby MD. Carbohydrate and fatty acid perturbations in the amniotic fluid of the recipient twin of pregnancies complicated by twin-twin transfusion syndrome in relation to treatment and fetal cardiovascular risk. Placenta 2016; 44:6-12. [DOI: 10.1016/j.placenta.2016.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/23/2016] [Accepted: 05/26/2016] [Indexed: 10/21/2022]
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Mackie FL, Hemming K, Allen S, Morris RK, Kilby MD. The accuracy of cell-free fetal DNA-based non-invasive prenatal testing in singleton pregnancies: a systematic review and bivariate meta-analysis. BJOG 2016; 124:32-46. [DOI: 10.1111/1471-0528.14050] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2016] [Indexed: 12/18/2022]
Affiliation(s)
- FL Mackie
- Centre for Women's & Newborn Health and the Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
| | - K Hemming
- Public Health, Epidemiology and Biostatistics; Institute of Applied Health Sciences; University of Birmingham; Birmingham UK
| | - S Allen
- West Midlands Regional Genetics Laboratory; Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
| | - RK Morris
- Centre for Women's & Newborn Health and the Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
- Fetal Medicine Centre; Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
| | - MD Kilby
- Centre for Women's & Newborn Health and the Institute of Metabolism and Systems Research; University of Birmingham; Birmingham UK
- Fetal Medicine Centre; Birmingham Women's Hospital NHS Foundation Trust; Birmingham UK
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Dhillon RK, Hillman SC, Pounds R, Morris RK, Kilby MD. Comparison of Solomon technique with selective laser ablation for twin-twin transfusion syndrome: a systematic review. Ultrasound Obstet Gynecol 2015; 46:526-533. [PMID: 25677883 DOI: 10.1002/uog.14813] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 01/04/2015] [Accepted: 01/30/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To compare the Solomon and selective techniques for fetoscopic laser ablation (FLA) for the treatment of twin-twin transfusion syndrome (TTTS) in monochorionic-diamniotic twin pregnancies. METHODS This was a systematic review conducted in accordance with the PRISMA statement. Electronic searches were performed for relevant citations published from inception to September 2014. Selected studies included pregnancies undergoing FLA for TTTS that reported on recurrence of TTTS, occurrence of twin anemia-polycythemia sequence (TAPS) or survival. RESULTS From 270 possible citations, three studies were included, two cohort studies and one randomized controlled trial (RCT), which directly compared the Solomon and selective techniques for FLA. The odds ratios (OR) of recurrent TTTS when using the Solomon vs the selective technique in the two cohort studies (n = 249) were 0.30 (95% CI, 0.00-4.46) and 0.45 (95% CI, 0.07-2.20). The RCT (n = 274) demonstrated a statistically significant reduction in risk of recurrent TTTS with the Solomon technique (OR, 0.21 (95% CI, 0.04-0.98); P = 0.03). The ORs for the development of TAPS following the Solomon and the selective techniques were 0.20 (95% CI, 0.00-2.46) and 0.61 (95% CI, 0.05-5.53) in the cohort studies and 0.16 (95% CI, 0.05-0.49) in the RCT, with statistically significant differences for the RCT only (P < 0.001). Observational evidence suggested overall better survival with the Solomon technique, which was statistically significant for survival of at least one twin. The RCT did not demonstrate a significant difference in survival between the two techniques, most probably owing to the small sample size and lack of power. CONCLUSION This systematic review of observational, comparative cohort and RCT data suggests a trend towards a reduction in TAPS and recurrent TTTS and an increase in twin survival, with no increase in the occurrence of complications or adverse events, when using the Solomon compared to the selective technique for the treatment of TTTS. These findings need to be confirmed by an appropriately-powered RCT with long-term neurological follow-up.
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Affiliation(s)
- R K Dhillon
- Centre for Women's & Children's Health, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - S C Hillman
- Centre for Women's & Children's Health, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - R Pounds
- Russells Hall Hospital, The Dudley Group NHS Foundation Trust, Dudley, UK
| | - R K Morris
- Centre for Women's & Children's Health, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Fetal Medicine Centre, Birmingham Women's NHS Foundation Trust, Edgbaston, Birmingham, UK
| | - M D Kilby
- Centre for Women's & Children's Health, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Fetal Medicine Centre, Birmingham Women's NHS Foundation Trust, Edgbaston, Birmingham, UK
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Morris RK, Middleton LJ, Malin GL, Quinlan-Jones E, Daniels J, Khan KS, Deeks J, Kilby MD. Outcome in fetal lower urinary tract obstruction: a prospective registry study. Ultrasound Obstet Gynecol 2015; 46:424-431. [PMID: 25689128 DOI: 10.1002/uog.14808] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/26/2015] [Accepted: 01/27/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To describe influences on decision-making and prognostic variables in the prenatal management of fetal lower urinary tract obstruction (LUTO). METHODS This was a prospective registry study of pregnant women with a male fetus with LUTO from centers within the British Isles and The Netherlands. Women and/or their clinicians were given the treatment option of either conservative management or vesicoamniotic shunting (VAS). Baseline characteristics of women in the registry, reasons for entry to the registry and pregnancy outcomes were assessed. The main study outcomes were survival to 28 days after delivery, further survival to 2 years and renal function. Logistic regression analysis was used to examine prognostic variables that affected outcome. Results were compared with those of women in a randomized controlled trial (RCT) who were allocated randomly to a treatment option. RESULTS Forty-five women were registered, of whom 78% (35/45) underwent conservative management. Twenty-seven women entered the registry owing to their clinician's preference for management and 18 because of their own preference. Compared to the conservative-management group of the RCT, a higher proportion of women in the registry opting for conservative management had a normal amniotic fluid volume at diagnosis (P = 0.05) and a diagnosis of LUTO ≥ 24 weeks' gestation (P = 0.003). On multivariable logistic regression analysis, these variables showed a significant association with perinatal survival (P < 0.001). Survival to 28 days after delivery was higher in the conservative-management group, at 69% (24/35), compared to 40% (4/10) in the VAS group (P = 0.02) but this difference had limited statistical significance owing to small study size (relative risk, 0.58 (95% CI, 0.26-1.29); P = 0.14). CONCLUSION In our prospective registry, the majority of fetuses with LUTO received conservative management, which was associated with better short- and long-term outcomes. A significant proportion of these pregnancies had normal amniotic fluid volume and a gestational age at diagnosis of ≥ 24 weeks, characteristics shown to be associated with improved survival.
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Affiliation(s)
- R K Morris
- Centre for Women's & Children's Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Edgbaston, Birmingham, UK
| | - L J Middleton
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - G L Malin
- Centre for Women's & Children's Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - E Quinlan-Jones
- Centre for Women's & Children's Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - J Daniels
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - K S Khan
- Centre for Women's & Children's Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - J Deeks
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
- School of Health and Population Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - M D Kilby
- Centre for Women's & Children's Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Edgbaston, Birmingham, UK
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Morris RK. Author's reply: To PMID 24738894. BJOG 2015; 122:591. [PMID: 25702555 DOI: 10.1111/1471-0528.13134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2014] [Indexed: 11/27/2022]
Affiliation(s)
- R K Morris
- NIHR Clinical Lecturer in Maternal Fetal Medicine, Birmingham Centre for Women and Children's Health, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham Women's Hospital, Edgbaston, Birmingham, B15 2TG, UK
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Malin GL, Morris RK, Riley RD, Teune MJ, Khan KS. When is birthweight at term (≥37 weeks' gestation) abnormally low? A systematic review and meta-analysis of the prognostic and predictive ability of current birthweight standards for childhood and adult outcomes. BJOG 2015; 122:634-42. [PMID: 25601001 PMCID: PMC4413055 DOI: 10.1111/1471-0528.13282] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND Health outcomes throughout the life course have been linked to fetal growth restriction and low birthweight. A variety of measures exist to define low birthweight, with a lack of consensus regarding which predict adverse outcome. OBJECTIVES To evaluate the relationship between birthweight standards and childhood and adult outcomes in term-born infants (≥37 weeks' gestation). SEARCH STRATEGY MEDLINE (1966-January 2011), EMBASE (1980-January 2011), and the Cochrane Library (2011:1) and MEDION were included. SELECTION CRITERIA Studies comprising live term-born infants (gestation ≥37 completed weeks), with weight or other anthropometric measurements recorded at birth along with childhood and adult outcomes. DATA COLLECTION AND ANALYSIS Data were extracted to populate 2 × 2 tables relating birthweight standard with outcome, and meta-analysis was performed where possible. MAIN RESULTS Fifty-nine articles (2 600 383 individuals) were selected. There was no significant relationship between birthweight <2.5 kg (odds ratio [OR] 0.98, 95% confidence intervals [CI] 0.87-1.10) and composite measure of childhood morbidity. Weight <10th centile on the population nomogram showed a small association (OR 1.49, 95% CI 1.02-2.19) for the same outcome. There was no significant association between either of the above measures and adult morbidity. The relationship between other measures and individual outcomes varied. AUTHOR'S CONCLUSIONS The association between low birthweight, by any definition, and childhood and adult morbidity was inconsistent. None of the current standards of low birthweight was a good predictor of adverse outcome.
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Affiliation(s)
- G L Malin
- School of Medicine, The University of Nottingham, Nottingham, UK
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Riley RD, Ahmed I, Ensor J, Takwoingi Y, Kirkham A, Morris RK, Noordzij JP, Deeks JJ. Meta-analysis of test accuracy studies: an exploratory method for investigating the impact of missing thresholds. Syst Rev 2015; 4:12. [PMID: 25652323 PMCID: PMC4417327 DOI: 10.1186/2046-4053-4-12] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 12/30/2014] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Primary studies examining the accuracy of a continuous test evaluate its sensitivity and specificity at one or more thresholds. Meta-analysts then usually perform a separate meta-analysis for each threshold. However, the number of studies available for each threshold is often very different, as primary studies are inconsistent in the thresholds reported. Furthermore, of concern is selective reporting bias, because primary studies may be less likely to report a threshold when it gives low sensitivity and/or specificity estimates. This may lead to biased meta-analysis results. We developed an exploratory method to examine the potential impact of missing thresholds on conclusions from a test accuracy meta-analysis. METHODS Our method identifies studies that contain missing thresholds bounded between a pair of higher and lower thresholds for which results are available. The bounded missing threshold results (two-by-two tables) are then imputed, by assuming a linear relationship between threshold value and each of logit-sensitivity and logit-specificity. The imputed results are then added to the meta-analysis, to ascertain if original conclusions are robust. The method is evaluated through simulation, and application made to 13 studies evaluating protein:creatinine ratio (PCR) for detecting proteinuria in pregnancy with 23 different thresholds, ranging from one to seven per study. RESULTS The simulation shows the imputation method leads to meta-analysis estimates with smaller mean-square error. In the PCR application, it provides 50 additional results for meta-analysis and their inclusion produces lower test accuracy results than originally identified. For example, at a PCR threshold of 0.16, the summary specificity is 0.80 when using the original data, but 0.66 when also including the imputed data. At a PCR threshold of 0.25, the summary sensitivity is reduced from 0.95 to 0.85 when additionally including the imputed data. CONCLUSIONS The imputation method is a practical tool for researchers (often non-statisticians) to explore the potential impact of missing threshold results on their meta-analysis conclusions. Software is available to implement the method. In the PCR example, it revealed threshold results are vulnerable to the missing data, and so stimulates the need for advanced statistical models or, preferably, individual patient data from primary studies.
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Affiliation(s)
- Richard D Riley
- Research Institute of Primary Care and Health Sciences, Keele University, Staffordshire, ST5 5BG UK
| | - Ikhlaaq Ahmed
- MRC Hub for Trials Methodology Research, School of Health and Population Sciences, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT UK
| | - Joie Ensor
- School of Health and Population Sciences, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT UK
| | - Yemisi Takwoingi
- School of Health and Population Sciences, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT UK
| | - Amanda Kirkham
- School of Health and Population Sciences, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT UK
| | - R Katie Morris
- Research Section of Reproduction, Genes and Development; School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK ; Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
| | - J Pieter Noordzij
- Department of Otolaryngology - Head & Neck Surgery, Boston Medical Center, Boston University - School of Medicine, Boston, MA USA
| | - Jonathan J Deeks
- School of Health and Population Sciences, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT UK
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Hodgetts VA, Morris RK, Francis A, Gardosi J, Ismail KM. Effectiveness of folic acid supplementation in pregnancy on reducing the risk of small-for-gestational age neonates: a population study, systematic review and meta-analysis. BJOG 2014; 122:478-90. [PMID: 25424556 DOI: 10.1111/1471-0528.13202] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2014] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To assess the effect of timing of folic acid (FA) supplementation during pregnancy on the risk of the neonate being small for gestational age (SGA). DESIGN A population database study and a systematic review with meta-analysis including the results of this population study. SETTING AND DATA SOURCES A UK regional database was used for the population study and an electronic literature search (from inception until August 2013) for the systematic review. PARTICIPANTS AND INCLUDED STUDIES Singleton live births with no known congenital anomalies; 111,736 in population study and 188,796 in systematic review. OUTCOME MEASURES, DATA EXTRACTION AND ANALYSIS The main outcome was SGA based on customised birthweight centile. Associations are presented as odds ratios (OR) and adjusted odds ratios (aOR), adjusted for maternal and pregnancy-related characteristics. RESULTS Of 108,525 pregnancies with information about FA supplementation, 92,133 (84.9%) had taken FA during pregnancy. Time of commencement of supplementation was recorded in 39,416 pregnancies, of which FA was commenced before conception in 10,036, (25.5%) cases. Preconception commencement of FA supplementation was associated with reduced risk of SGA <10th centile (aOR 0.80, 95% CI 0.71-0.90, P < 0.01) and SGA <5th centile (aOR 0.78, 95% CI 0.66-0.91, P < 0.01). This result was reproduced when the data were pooled with other studies in the systematic review, showing a significant reduction in SGA (<5th centile) births with preconception commencement of FA (aOR 0.75, 95% CI 0.61-0.92, P < 0.006). In contrast, postconception folate had no significant effect on SGA rates. CONCLUSION Supplementation with FA significantly reduces the risk of SGA at birth but only if commenced preconceptually independent of other risk factors. SYSTEMATIC REVIEW REGISTRATION This systematic review was prospectively registered with PROSPERO number CRD42013004895.
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Affiliation(s)
- V A Hodgetts
- Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK
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Affiliation(s)
- R Katie Morris
- Centre for Women's & Children Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
| | - J Daniels
- Centre for Women's & Children Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - J Deeks
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK School of Health and Population Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - D Field
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - M D Kilby
- Centre for Women's & Children Health and the School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
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Morris RK, Malin GL, Quinlan-Jones E, Middleton LJ, Diwakar L, Hemming K, Burke D, Daniels J, Denny E, Barton P, Roberts TE, Khan KS, Deeks JJ, Kilby MD. The Percutaneous shunting in Lower Urinary Tract Obstruction (PLUTO) study and randomised controlled trial: evaluation of the effectiveness, cost-effectiveness and acceptability of percutaneous vesicoamniotic shunting for lower urinary tract obstruction. Health Technol Assess 2014; 17:1-232. [PMID: 24331029 DOI: 10.3310/hta17590] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Congenital lower urinary tract obstruction (LUTO) is a disease associated with high perinatal mortality and childhood morbidity. Fetal vesicoamniotic shunting (VAS) bypasses the obstruction with the potential to improve outcome. OBJECTIVE To determine the effectiveness, cost-effectiveness and patient acceptability of VAS for fetal LUTO. DESIGN A multicentre, randomised controlled trial incorporating a prospective registry, decision-analytic health economic model and preplanned Bayesian analysis using elicited opinions. Patient acceptability was evaluated by interview in a qualitative study. SETTING Fetal medicine departments in the UK, Ireland and the Netherlands. PARTICIPANTS Pregnant women with a male singleton fetus with LUTO. INTERVENTIONS In utero percutaneous VAS compared with conservative care. MAIN OUTCOME MEASURES The primary outcome was survival to 28 days. Secondary outcome measures were survival and renal function at 1 year of age, cost of care and cost per additional life-year and per disability-free survival at the end of 1 year. RESULTS The trial stopped early with 31 women randomised because of difficulties in recruitment. Of those randomised to VAS and conservative management, 3/16 (19%) and 2/15 (13%), respectively, did not receive their allocated intervention. Based on intention-to-treat analysis, survival at 28 days was higher if allocated VAS (50%) than conservative management (27%) [relative risk (RR) 1.88, 95% confidence interval (CI) 0.71 to 4.96, p = 0.27]. At 12 months survival was 44% in the VAS arm and 20% in the conservative arm (RR 2.19, 95% CI 0.69 to 6.94, p = 0.25). Neither difference was statistically significant. Of survivors at 1 year, two in the VAS arm had no evidence of renal impairment and four in the VAS arm and two in the conservative arm required medical management. One baby in the conservative arm had end-stage renal failure at 1 year. VAS was more expensive because of additional surgery and intensive care. VAS cost £15,500 per survivor at 1 year and £43,900 per disability-free year. Elicited expert opinions showed uncertainty in the effect of VAS at 28 days. In a Bayesian analysis combining elicited opinion with the results, uncertainty of the benefit of VAS remained (RR 1.31, 95% credible interval 0.84 to 2.18). The acceptability study identified visualisation of the fetus during ultrasound scanning, perceiving a personal benefit, and altruism as positive influences on recruitment. Fear of the VAS procedure and the perceived severity of LUTO influenced non-participation. The need for more detailed information about the condition and its implications during pregnancy and following delivery was a further important finding of this research. Recruitment was hampered by logistical and regulatory difficulties, a lower incidence of LUTO and lower antenatal diagnosis rate [estimated to be 3.34 (95% CI 2.95 to 3.72) per 10,000 total births and 47%, respectively, in an associated epidemiological study] and high termination of pregnancy rates. In the registry women also demonstrated a clear preference for conservative management. CONCLUSIONS Survival to 28 days and 1 year appears to be higher with VAS than with conservative management, but it is not possible to prove benefit beyond reasonable doubt. Notably, prognosis in both arms for survival and renal function is poor. VAS was substantially more costly and unlikely to be regarded as cost-effective based on the 1-year data. Parents should be counselled about the risks of pregnancy loss with or without VAS insertion. The National Institute for Health and Care Excellence interventional procedures guidance (IPG 202) should be updated to reflect this new evidence. Babies in the PLUTO trial should be followed up long term for the different outcomes. TRIAL REGISTRATION ISRCTN53328556. FUNDING This project was funded by the NIHR Health Technology Assessment programme and will be published in full in Health Technology Assessment ; Vol. 17, No. 59. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- R K Morris
- School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
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Morris RK, Meller CH, Tamblyn J, Malin GM, Riley RD, Kilby MD, Robson SC, Khan KS. Association and prediction of amniotic fluid measurements for adverse pregnancy outcome: systematic review and meta-analysis. BJOG 2014; 121:686-99. [PMID: 24738894 DOI: 10.1111/1471-0528.12589] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Measurements of amniotic fluid volume are used for pregnancy surveillance despite a lack of evidence for their predictive ability. OBJECTIVE To evaluate the association and predictive value of ultrasound measurements of amniotic fluid volume for adverse pregnancy outcome. SEARCH STRATEGY Electronic databases (inception to October 2011), reference lists, hand searching of journals, contact with experts. SELECTION CRITERIA Studies comparing measurements of amniotic fluid volume with adverse outcome, excluding pre-labour ruptured membranes or congenital/structural anomalies. DATA COLLECTION Data on study characteristics, design, quality. Random effects meta-analysis to estimate summary odds ratios (prognostic association) and summary sensitivity, specificity and likelihood ratios (predictive ability). MAIN RESULTS Forty-three studies (244,493 fetuses) were included demonstrating a strong association between oligohydramnios (varying definitions) and birthweight <10th centile (summary odds ratio [OR] 6.31, 95% confidence interval [95% CI] 4.15-9.58; high-risk population [author definition] n = 6 studies, 28,510 fetuses), and mortality (neonatal death any population summary OR 8.72, 95% CI 2.43-31.26; n = 6 studies, 55,735 fetuses; and perinatal mortality high-risk population summary OR 11.54, 95% CI 4.05-32.9; n = 2 studies, 27;891 fetuses). There was a strong association between polyhydramnios (maximum pool depth >8 cm or amniotic fluid index ≥25 cm) and birthweight >90th centile (OR 11.41, 95% CI 7.09-18.36; n = 1 study, 3960 fetuses). Despite strong associations, predictive accuracy for perinatal outcome was poor. AUTHOR'S CONCLUSION Current evidence suggests that oligohydramnios is strongly associated with being small for gestational age and mortality, and polyhydramnios with birthweight >90th centile. Despite strong associations with poor outcome, they do not accurately predict outcome risk for individuals.
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Affiliation(s)
- R K Morris
- Birmingham Centre for Women's & Children's Health & School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; Fetal Medicine Centre, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
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Malin GL, Morris RK, Riley R, Teune MJ, Khan KS. When is birthweight at term abnormally low? A systematic review and meta-analysis of the association and predictive ability of current birthweight standards for neonatal outcomes. BJOG 2014; 121:515-26. [PMID: 24397731 PMCID: PMC4162997 DOI: 10.1111/1471-0528.12517] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2013] [Indexed: 01/16/2023]
Abstract
Background Intrauterine growth restriction is a cause of neonatal morbidity and mortality. A variety of definitions of low birthweight are used in clinical practice, with a lack of consensus regarding which definitions best predict adverse outcomes. Objectives To evaluate the relationship between birthweight standards and neonatal outcome in term-born infants (at ≥ 37 weeks of gestation). Search strategy MEDLINE (1966–January 2011), EMBASE (1980–January 2011), and the Cochrane Library (2011:1) and MEDION were included in our search. Selection criteria Studies comprising live term-born infants (gestation ≥ 37 completed weeks), with weight or other anthropometric measurements recorded at birth along with neonatal outcomes. Data collection and analysis Data were extracted to populate 2 × 2 tables relating birthweight standard with outcome, and meta-analysis was performed where possible. Main results Twenty-nine studies including 21 034 114 neonates were selected. Absolute birthweight was strongly associated with mortality, with birthweight < 1.5 kg giving the largest association (OR 48.6, 95% CI 28.62–82.53). When using centile charts, regardless of threshold, the summary odds ratios were significant but closer to 1 than when using absolute birthweight. For all tests, summary predictive ability comprised high specificity and positive likelihood ratio for neonatal death, but low sensitivity and a negative likelihood ratio close to 1. Author's conclusions Absolute birthweight is a prognostic factor for neonatal mortality. The indirect evidence suggests that centile charts or other definitions of low birthweight are not as strongly associated with mortality as the absolute birthweight. Further research is required to improve predictive accuracy.
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Affiliation(s)
- G L Malin
- School of Medicine, the University of Nottingham, Nottingham, UK
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Dhillon RK, Hillman SC, Morris RK, McMullan D, Williams D, Coomarasamy A, Kilby MD. Additional information from chromosomal microarray analysis (CMA) over conventional karyotyping when diagnosing chromosomal abnormalities in miscarriage: a systematic review and meta-analysis. BJOG 2013; 121:11-21. [DOI: 10.1111/1471-0528.12382] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2013] [Indexed: 02/03/2023]
Affiliation(s)
- RK Dhillon
- Academic Department; Birmingham Women's Foundation Trust; Edgbaston Birminghmam UK
| | - SC Hillman
- Academic Department; Birmingham Women's Foundation Trust; Edgbaston Birminghmam UK
- School of Clinical and Experimental Medicine; College of Medicine and Dentistry; University of Birmingham; Edgbaston Birmingham UK
| | - RK Morris
- Academic Department; Birmingham Women's Foundation Trust; Edgbaston Birminghmam UK
- School of Clinical and Experimental Medicine; College of Medicine and Dentistry; University of Birmingham; Edgbaston Birmingham UK
| | - D McMullan
- West Midlands Regional Genetics Laboratories and the Department of Clinical Genetics; Birmingham Women's Foundation Trust; Edgbaston Birmingham UK
| | - D Williams
- West Midlands Regional Genetics Laboratories and the Department of Clinical Genetics; Birmingham Women's Foundation Trust; Edgbaston Birmingham UK
| | - A Coomarasamy
- Academic Department; Birmingham Women's Foundation Trust; Edgbaston Birminghmam UK
- School of Clinical and Experimental Medicine; College of Medicine and Dentistry; University of Birmingham; Edgbaston Birmingham UK
| | - MD Kilby
- Academic Department; Birmingham Women's Foundation Trust; Edgbaston Birminghmam UK
- School of Clinical and Experimental Medicine; College of Medicine and Dentistry; University of Birmingham; Edgbaston Birmingham UK
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Malin G, Tonks AM, Morris RK, Gardosi J, Kilby MD. Congenital lower urinary tract obstruction: a population-based epidemiological study. BJOG 2012; 119:1455-64. [DOI: 10.1111/j.1471-0528.2012.03476.x] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Morris RK, Riley RD, Doug M, Deeks JJ, Kilby MD. Diagnostic accuracy of spot urinary protein and albumin to creatinine ratios for detection of significant proteinuria or adverse pregnancy outcome in patients with suspected pre-eclampsia: systematic review and meta-analysis. BMJ 2012; 345:e4342. [PMID: 22777026 PMCID: PMC3392077 DOI: 10.1136/bmj.e4342] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/06/2012] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To determine the diagnostic accuracy of two "spot urine" tests for significant proteinuria or adverse pregnancy outcome in pregnant women with suspected pre-eclampsia. DESIGN Systematic review and meta-analysis. DATA SOURCES Searches of electronic databases 1980 to January 2011, reference list checking, hand searching of journals, and contact with experts. INCLUSION CRITERIA Diagnostic studies, in pregnant women with hypertension, that compared the urinary spot protein to creatinine ratio or albumin to creatinine ratio with urinary protein excretion over 24 hours or adverse pregnancy outcome. Study characteristics, design, and methodological and reporting quality were objectively assessed. DATA EXTRACTION Study results relating to diagnostic accuracy were extracted and synthesised using multivariate random effects meta-analysis methods. RESULTS Twenty studies, testing 2978 women (pregnancies), were included. Thirteen studies examining protein to creatinine ratio for the detection of significant proteinuria were included in the multivariate analysis. Threshold values for protein to creatinine ratio ranged between 0.13 and 0.5, with estimates of sensitivity ranging from 0.65 to 0.89 and estimates of specificity from 0.63 to 0.87; the area under the summary receiver operating characteristics curve was 0.69. On average, across all studies, the optimum threshold (that optimises sensitivity and specificity combined) seems to be between 0.30 and 0.35 inclusive. However, no threshold gave a summary estimate above 80% for both sensitivity and specificity, and considerable heterogeneity existed in diagnostic accuracy across studies at most thresholds. No studies looked at protein to creatinine ratio and adverse pregnancy outcome. For albumin to creatinine ratio, meta-analysis was not possible. Results from a single study suggested that the most predictive result, for significant proteinuria, was with the DCA 2000 quantitative analyser (>2 mg/mmol) with a summary sensitivity of 0.94 (95% confidence interval 0.86 to 0.98) and a specificity of 0.94 (0.87 to 0.98). In a single study of adverse pregnancy outcome, results for perinatal death were a sensitivity of 0.82 (0.48 to 0.98) and a specificity of 0.59 (0.51 to 0.67). CONCLUSION The maternal "spot urine" estimate of protein to creatinine ratio shows promising diagnostic value for significant proteinuria in suspected pre-eclampsia. The existing evidence is not, however, sufficient to determine how protein to creatinine ratio should be used in clinical practice, owing to the heterogeneity in test accuracy and prevalence across studies. Insufficient evidence is available on the use of albumin to creatinine ratio in this area. Insufficient evidence exists for either test to predict adverse pregnancy outcome.
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Affiliation(s)
- R K Morris
- Research Section of Reproduction, Genes and Development, School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
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Affiliation(s)
- Tara J Selman
- Fetal Medicine Centre, Birmingham Women’s Hospital NHS Foundation Trust, Birmingham, UK
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Abstract
Congenital lower urinary tract obstruction (LUTO) is a heterogeneous group of pathologies, the most common being posterior urethral valves (PUV) or urethral atresia. The bladder neck obstruction in utero leads to a spectrum of disease including mild oligohydramnios with normal renal function to a picture of severe oligohydramnios associated with chronic obstructive macro/microcystic renal parenchymal disease leading to chronic renal impairment. These anomalies may be isolated or complex; the latter being associated with other structural or chromosomal abnormalities. If isolated, the congenital bladder neck obstruction may be amenable to in-utero therapy. In a significant proportion of babies affected by LUTO there is severe oligohydramnios (occurring before 20 weeks gestation) and associated with pulmonary hypoplasia, a scenario almost always associated with perinatal death. For those babies that survive the perinatal period there is a significant risk of renal impairment, often necessitating renal dialysis or transplantation in childhood. In addition, there may be other morbidities such as chronic filling anomalies of the bladder that may require treatment.
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Affiliation(s)
- R Katie Morris
- Clinical Lecturer in Fetal Medicine, School of Clinical and Experimental Medicine, University of Birmingham, c/o Birmingham Women's NHS Foundation Trust, Edgbaston, Birmingham, B15 2TG, United Kingdom.
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Morris RK, Ruano R, Kilby MD. Effectiveness of fetal cystoscopy as a diagnostic and therapeutic intervention for lower urinary tract obstruction: a systematic review. Ultrasound Obstet Gynecol 2011; 37:629-637. [PMID: 21374748 DOI: 10.1002/uog.8981] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/26/2011] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To determine the effectiveness of fetal cystoscopy in the prenatal diagnosis of and intervention for congenital lower urinary tract obstruction. METHODS This study was a literature search using MEDLINE, Embase, Cochrane Library, MEDION, Web of Science reference lists and contact with experts. All studies reporting on fetal cystoscopy in lower urinary tract obstruction with data for a 2 × 2 table were selected for review. No language restrictions were applied. There was independent selection of studies, data extraction and quality assessment by two reviewers. Peto odds ratios were calculated as a summary measure of effect. RESULTS A total of 2071 citations were identified and 66 papers selected for detailed evaluation, from which four papers with a total of 63 patients were selected for inclusion. Two papers had results for the use of cystoscopy in diagnosis, showing that fetal cystoscopy altered the ultrasound diagnosis of the underlying pathology in 36.4 and 25.0% of fetuses, respectively. Compared to no treatment, fetal cystoscopic intervention demonstrated an odds ratio for improved perinatal survival of 20.51 (95% CI, 3.87-108.69). However, comparing vesicoamniotic shunt (VAS) with fetal cystoscopy there appeared to be no significant improvement in the perinatal survival odds ratio of 1.49 (95% CI, 0.13-16.97). These results had wide CIs and for cystoscopy vs. VAS, all results crossed the line of no effect. CONCLUSION There is little published evidence for the effectiveness of therapeutic fetal cystoscopy as an intervention for congenital lower urinary tract obstruction and the quality of this evidence is poor. It should thus be considered to be an 'experimental intervention' and subjected to further investigation.
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Affiliation(s)
- R K Morris
- School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
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Selman TJ, Morris RK, Zamora J, Khan KS. The quality of reporting of primary test accuracy studies in obstetrics and gynaecology: application of the STARD criteria. BMC Womens Health 2011; 11:8. [PMID: 21429185 PMCID: PMC3072919 DOI: 10.1186/1472-6874-11-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Accepted: 03/23/2011] [Indexed: 11/10/2022]
Abstract
Background In obstetrics and gynaecology there has been a rapid growth in the development of new tests and primary studies of their accuracy. It is imperative that such studies are reported with transparency allowing the detection of any potential bias that may invalidate the results. The objective of this study was to determine the quality of reporting in diagnostic test accuracy studies in obstetrics and gynaecology using the Standards for Reporting of Diagnostic Accuracy - STARD checklist. Methods The included studies of ten systematic reviews were assessed for compliance with each of the reporting criteria. Using appropriate statistical tests we investigated whether there was an improvement in reporting quality since the introduction of the STARD checklist, whether a correlation existed between study sample size, country of origin of study and reporting quality. Results A total of 300 studies were included (195 for obstetrics, 105 for gynaecology). The overall reporting quality of included studies to the STARD criteria was poor. Obstetric studies reported adequately > 50% of the time for 62.1% (18/29) of the items while gynaecologic studies did the same 51.7% (15/29). There was a greater mean compliance with STARD criteria in the included obstetric studies than the gynaecological (p < 0.0001). There was a positive correlation, in both obstetrics (p < 0.0001) and gynaecology (p = 0.0123), between study sample size and reporting quality. No correlation between geographical area of publication and compliance with the reporting criteria could be demonstrated. Conclusions The reporting quality of papers in obstetrics and gynaecology is improving. This may be due to initiatives such as the STARD checklist as well as historical progress in awareness among authors of the need to accurately report studies. There is however considerable scope for further improvement.
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Affiliation(s)
- Tara J Selman
- School of Clinical and Experimental Medicine (Reproduction, Genes and Development), University of Birmingham, Birmingham Women's Hospital, Birmingham, B15 2TG, UK
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Morris RK, Malin G, Robson SC, Kleijnen J, Zamora J, Khan KS. Fetal umbilical artery Doppler to predict compromise of fetal/neonatal wellbeing in a high-risk population: systematic review and bivariate meta-analysis. Ultrasound Obstet Gynecol 2011; 37:135-142. [PMID: 20922778 DOI: 10.1002/uog.7767] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/02/2010] [Indexed: 05/29/2023]
Abstract
OBJECTIVE We investigated the accuracy of fetal umbilical artery Doppler to predict the risk of compromise of fetal/neonatal wellbeing in a high-risk population. METHODS Searches in MEDLINE, Embase, The Cochrane Library and Medion (from inception to March 2009) were carried out, together with hand searching of relevant journals, reference list checking of included articles and contact with experts. Criteria for selection were observational studies with umbilical artery Doppler used in a high-risk pregnant population with an outcome measure for compromise of fetal/neonatal wellbeing. Data on study design, quality and results were extracted to construct 2 × 2 tables. Bivariate meta-analysis was performed. Likelihood ratios (LRs) were used as the summary measure of accuracy. RESULTS One-hundred and four studies met the selection criteria (19 191 fetuses). In a high-risk population, umbilical artery Doppler predicted small-for-gestational age with a pooled LR+ of 3.76 (2.96, 4.76) and pooled LR- of 0.52 (0.45, 0.61), and compromise of fetal/neonatal wellbeing with a pooled LR+ of 3.41 (2.68, 4.34) and pooled LR- of 0.55 (0.48, 0.62). In this group it was also possible to predict, with accuracy, intrauterine death (pooled LR+ = 4.37 (0.88, 21.8); pooled LR- = 0.25 (0.07, 0.91)) and acidosis (pooled LR+ = 2.75 (1.48, 5.11); pooled LR- = 0.58 (0.36, 0.94)). CONCLUSIONS In a high-risk population, fetal umbilical artery Doppler is a moderately useful test with which to predict mortality and risk of compromise.
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Affiliation(s)
- R K Morris
- Department of Obstetrics and Gynaecology, University of Birmingham, Birmingham Women's Hospital, Birmingham, UK.
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