Publications
42 results found
Usman S, Foo L, Tay J, et al., 2017, Authors' reply [Use of magnesium sulfate in preterm deliveries for neuroprotection of the neonate], Obstetrician and Gynaecologist, Vol: 19, Pages: 255-256, ISSN: 1744-4667
Kahrs BH, Usman S, Ghi T, et al., 2017, Sonographic prediction of outcome of vacuum deliveries: a multicenter, prospective cohort study, American Journal of Obstetrics and Gynecology, Vol: 217, ISSN: 0002-9378
BackgroundSafe management of the second stage of labor is of great importance. Unnecessary interventions should be avoided and correct timing of interventions should be focused. Ultrasound assessment of fetal position and station has a potential to improve the precision in diagnosing and managing prolonged or arrested labors. The decision to perform vacuum delivery is traditionally based on subjective assessment by digital vaginal examination and clinical expertise and there is currently no method of objectively quantifying the likelihood of successful delivery. Prolonged attempts at vacuum delivery are associated with neonatal morbidity and maternal trauma, especially so if the procedure is unsuccessful and a cesarean is performed.ObjectiveThe aim of the study was to assess if ultrasound measurements of fetal position and station can predict duration of vacuum extractions, mode of delivery, and fetal outcome in nulliparous women with prolonged second stage of labor.Study DesignWe performed a prospective cohort study in nulliparous women at term with prolonged second stage of labor in 7 European maternity units from 2013 through 2016. Fetal head position and station were determined using transabdominal and transperineal ultrasound, respectively. Our preliminary clinical experience assessing head-perineum distance prior to vacuum delivery suggested that we should set 25 mm for the power calculation, a level corresponding roughly to +2 below the ischial spines. The main outcome was duration of vacuum extraction in relation to ultrasound measured head-perineum distance with a predefined cut-off of 25 mm, and 220 women were needed to discriminate between groups using a hazard ratio of 1.5 with 80% power and alpha 5%. Secondary outcomes were delivery mode and umbilical artery cord blood samples after birth. The time interval was evaluated using survival analyses, and the outcomes of delivery were evaluated using receiver operating characteristic curves and descriptive st
Usman S, Barton H, Wilhelm-Benartzi C, et al., 2017, Acceptability of transabdominal and transperineal ultrasound compared to vaginal examinations prior to delivery, Publisher: WILEY, Pages: 8-8, ISSN: 1470-0328
Usman S, Foo L, Tay J, et al., 2017, Use of magnesium sulfate in preterm deliveries for neuroprotection of the neonate, Obstetrician and Gynaecologist, Vol: 19, Pages: 21-28, ISSN: 1744-4667
Key content The prevalence of preterm birth is increasing and owing to advances in neonatal care, more infants are surviving. However, in parallel with this, the incidence of cerebral palsy (CP) is also rising. Magnesium sulfate (MgSO4) is currently recommended for use in women who are at risk of giving birth at less than 30–32 weeks of gestation for neuroprotection of their infants. The exact mechanism of action remains unclear. Meta‐analyses report encouraging results that are consistent with a modest but tangible benefit for the use of MgSO4, and suggest a number needed to treat (NNT) to prevent one in 46 cases of CP in infants born preterm before 30 weeks of gestation and one in 63 cases of CP in infants born preterm before 34 weeks of gestation.Learning objectives To gain an understanding of the risk of neurodisability in infants delivered preterm. To become familiar with the main studies assessing the use of MgSO4 for neuroprotection in preterm deliveries. To become aware of the relevant international guidelines.Ethical issues Concerns have been raised regarding the higher number of perinatal deaths reported with the use of MgSO4 in the MagNET study. This was not substantiated in the Cochrane review. Given that MgSO4 is a safe, readily available and inexpensive drug, even if there were only to be modest benefits from its use, the risk–benefit ratio is in favour of its use.
Usman S, Hirst C, Oliveira M, et al., 2016, Acceptability of transabdominal and transperineal ultrasound compared to vaginal examinations peri-delivery, BJOG - An International Journal of Obstetrics and Gynaecology, Vol: 123, Pages: 165-166, ISSN: 1470-0328
Usman S, Lees C, 2016, The acceptability of intrapartum ultrasound, British Maternal & Fetal Medicine Society (BMFMS) 18th Annual Conference 2016, Publisher: Wiley, Pages: 102-102, ISSN: 1471-0528
Usman S, lees C, 2015, The benefits and pitfalls of intrapartum ultrasound, Australasian Journal of Ultrasound Medicine, ISSN: 1836-6864
Eggebo TM, Wilhelm-Benartzi C, Hassan WA, et al., 2015, A model to predict vaginal delivery in nulliparous women based on maternal characteristics and intrapartum ultrasound, AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY, Vol: 213, ISSN: 0002-9378
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- Citations: 40
De Rosnay P, Chandiramani M, Usman S, et al., 2011, Injury of epigastric vessels at laparoscopy: Diagnosis and management, Gynecological Surgery, Vol: 8, Pages: 353-356, ISSN: 1613-2076
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- Citations: 6
Rahman MS, Usman S, 2010, Questionnaires, Surveys, Scales in Surgical Research: Concepts and Methodology, Key Topics in Surgical Research and Methodology, Editors: Athanasiou, Debas, Darzi, Publisher: Springer, Pages: 477-494, ISBN: 9783540719144
This book represents a comprehensive reference text accessible to the surgeon embarking on an academic career.
Rahman MS, Usman S, Warren O, et al., 2010, Questionnaires, Surveys, Scales in Surgical Research: Concepts and Methodology, Key Topics in Surgical Research and Methodology, Editors: Athanasiou, Darzi, Publisher: Springer Verlag, Pages: 477-494, ISBN: 9783540719144
Key Topics in Surgical Research and Methodology represents a comprehensive reference text accessible to the surgeon embarking on an academic career. Key themes emphasize and summarize the text. Four key elements are covered, i.e.
Geranmayeh F, Usman S, Bhutiani R, 2008, Jejunal ischaemia - rare aetiologies and a surgical dilemma, ACTA GASTRO-ENTEROLOGICA BELGICA, Vol: 71, Pages: 263-266, ISSN: 1784-3227
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- Citations: 1
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