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  1. Cheung KW, Tan LN, Meher S, WHO Intrapartum Care Algorithms Working Group
    BJOG, 2024 Aug;131 Suppl 2:79-89.
    PMID: 35415941 DOI: 10.1111/1471-0528.16726
    AIM: To develop evidence-based clinical algorithms for management of common intrapartum urinary abnormalities.

    POPULATION: Women with singleton, term pregnancies in active labour and immediate postnatal period, at low risk of complications.

    SETTING: Healthcare facilities in low- and middle-income countries.

    SEARCH STRATEGY: A systematic search and review were conducted on the current guidelines from WHO, NICE, ACOG and RCOG. Additional search was done on PubMed and The Cochrane Database of Systematic Reviews up to May 2020.

    CASE SCENARIOS: Four common intrapartum urinary abnormalities were selected: proteinuria, ketonuria, glycosuria and oliguria. Using reagent strip testing, glycosuria was defined as ≥2+ on one occasion or of ≥1+ on two or more occasions. Proteinuria was defined as ≥2+ and presence of ketone indicated ketonuria. Oliguria was defined as hourly urine output ≤30 ml. Thorough initial assessment using history, physical examination and basic investigations helped differentiate most of the underlying causes, which include diabetes mellitus, dehydration, sepsis, pre-eclampsia, shock, anaemia, obstructed labour, underlying cardiac or renal problems. A clinical algorithm was developed for each urinary abnormality to facilitate intrapartum management and referral of complicated cases for specialised care.

    CONCLUSIONS: Four simple, user-friendly and evidence-based clinical algorithms were developed to enhance intrapartum care of commonly encountered maternal urine abnormalities. These algorithms may be used to support healthcare professionals in clinical decision-making when handling normal and potentially complicated labour, especially in low resource countries.

    TWEETABLE ABSTRACT: Evidence-based clinical algorithms developed to guide intrapartum management of commonly encountered urinary abnormalities.

  2. Tan LN, Cheung KW, Philip I, Ong S, Kilby MD
    Fetal Diagn Ther, 2019;45(5):285-294.
    PMID: 30554214 DOI: 10.1159/000494616
    BACKGROUND/PURPOSE: We report a case study of jejunal atresia and the results of a systematic literature review of all reported cases of bowel complications occurring after fetoscopic laser ablation (FLA) for the treatment of twin-to-twin transfusion syndrome (TTTS).

    METHODS: A systematic literature review was performed of bowel complications after FLA for TTTS according to PRISMA guidelines.

    RESULTS: There are 11 published cases of small bowel atresia, 5 cases of necrotising enterocolitis (NEC), and 2 cases with foetal bowel perforations. Recipient twins were more likely to be affected by small bowel atresia (7 recipient and 4 donor cases) and NEC (3 recipient and 2 donor twins). Prenatal ultrasonographic abnormalities were demonstrated in 7 out of 9 cases with bowel atresia and in both cases of bowel perforation. The overall survival rate for neonates with bowel complications after FLA is 72%, but is much lower for co-twins at 22%. The survival rates for jejunoileal atresia and NEC are 91 and 40%, respectively.

    CONCLUSIONS: It is uncertain as to whether these bowel anomalies are due to bowel ischaemia associated with TTTS, the treatment with FLA, or a combination of both. Cases with prenatal abdominal ultrasonographic abnormalities after FLA should have close prenatal and postnatal assessment to detect bowel complications.

  3. Cheung KW, Tan LN, Seto MTY, Moholkar S, Masson G, Kilby MD
    Fetal Diagn Ther, 2019;46(5):285-295.
    PMID: 30861511 DOI: 10.1159/000496202
    BACKGROUND: Fetal subdural haematoma (SDH) is associated with poor prognosis.

    OBJECTIVE: The conflicting evidence from the literature presents a challenge in prenatal counselling. We present a case study and systematic review of the literature for the management and outcome of fetal SDH.

    METHODS: Systematic search of electronic database.

    RESULTS: A total 45 cases were extracted from 39 papers. Prenatal ultrasonographic features were intracranial echogenicity (42%), lateral ventriculomegaly (38%), presence of an intracranial mass (31%), macrocephaly (24%), midline deviation of cerebral falx (20%), and intracranial fluid collection (11%). Further secondary features were noted including reversed diastolic flow in the middle cerebral artery (11%), echogenic bowel (4%), hydrops fetalis (2%), and elevated middle cerebral artery peak systolic velocity (2%) (all highly likely to be associated with fetal anaemia). The rates of termination of pregnancy, stillbirth, and neonatal death were 18% (8/45), 16% (7/45), and 11% (5/45), respectively. Overall, therefore, the fetal and perinatal mortality was 32% (12/37). Amongst the 24 survivors with available neurological outcome, 42% (10/24) and 58% (14/24) had abnormal and normal neurological outcome, respectively. Underlying aetiology of fetal SDH was not identified in 47% (21/45). Fetal SDH with an identifiable underlying aetiology was the only factor associated with a higher chance of normal neurological outcome when compared to fetal SDH without a detectable cause (78.5 vs. 21.4%, p = 0.035).

    CONCLUSIONS: Stillbirth and neonatal death occurred in a significant proportion of fetal SDH. 58% of survivors had normal neurological outcome, and better prognosis was seen in SDH with identifiable underlying aetiology.

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