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  1. Nah SA, Sanmugam A, Singaravel S, Zahari Z, Aziz DA
    J Pediatr Surg, 2023 Feb;58(2):299-304.
    PMID: 36404187 DOI: 10.1016/j.jpedsurg.2022.10.032
    BACKGROUND: A shortage of specialist paediatric surgeons in Malaysia led to establishment of a national postgraduate training programme in 2004. We aimed to identify sociodemographic factors impacting training experience, and to define pressure points during training to inform targeted trainee support strategies.

    METHODS: We conducted an anonymized online survey in June 2021 on all programme graduates. Participants were asked for sociodemographic data, both current and during training. Likert scale responses were required for questions regarding adequacy of support received for family, health and personal issues during training. A free text response question soliciting suggestions for programme improvement was included. Data are reported as median (range). Chi-square/Fisher's exact tests for categorical variables and Mann-Whitney U tests for continuous variables were used, with p<0.05 significance.

    RESULTS: Of 53 eligible participants, 52 (98%) responded, 24 (46%) were female. Marital status was similar between genders at entry, but female trainees were more likely to be unmarried on exit (p = 0.001), and less likely to have children while training (p = 0.017). Of the 6 female and 18 male trainees who had children while training, women were more likely to take parental leave (p = 0.01). The majority felt advice given regarding parental leave and managing training while having children were poor. In thematic analysis of free text answers, lack of hands-on experience was the most common concern.

    CONCLUSION: Factors related to marriage and parenthood significantly associate with gender amongst trainees in Malaysia despite both genders being well represented. Concerns regarding adequacy of hands-on training highlight the need for educational innovations such as simulation models.

    LEVEL OF STUDY: Level III.

  2. Sanmugam A, Vythilingam G, Singaravel S, Nah SA
    Pediatr Surg Int, 2020 Aug;36(8):925-931.
    PMID: 32594243 DOI: 10.1007/s00383-020-04704-1
    PURPOSE: The COVID-19 pandemic has placed an unprecedented test on the delivery and management of healthcare services globally. This study describes the adaptive measures taken and evolving roles of the members of the paediatric surgery division in a developing country during this period.

    METHODS: We adopted multiple adaptive strategies including changes to stratification of surgeries, out-patient services by urgency and hospital alert status, policy writing involving multidisciplinary teams, and redeployment of manpower. Modifications were made to teaching activities and skills training to observe social distancing and mitigate reduced operative learning opportunities. Roles of academic staff were expanded to include non-surgical duties.

    RESULTS: The planned strategies and changes to pre COVID-19 practices were successful in ensuring minimal disruption to the delivery of essential paediatric surgical services and training. Despite the lack of established guidelines and literature outlining strategies to address the impact of this pandemic on surgical services, most of the initial measures employed were consistent with that of other surgical centres.

    CONCLUSION: Changes to delivery of surgical services and surgical training warrant a holistic approach and a constant re-evaluation of practices with emergence of new experiences and guidelines.

  3. Chung KJ, Chin YM, Wong MS, Sanmugam A, Singaravel S, Nah SA
    J Pediatr Surg, 2022 Feb;57(2):261-265.
    PMID: 34838305 DOI: 10.1016/j.jpedsurg.2021.10.032
    BACKGROUND: Umbilical granuloma is a common infantile condition which usually responds to non operative management. Copper sulphate (CuSO4) is often used as chemical cauterization but can cause superficial skin burns. An alternative is table salt (NaCl), which osmotically dehydrates wet granulation tissue causing necrosis. We aimed to compare the effectiveness of NaCl versus CuSO4 in treating umbilical granuloma.

    METHOD: We performed a multi centerrandomized controlled trial involving three regional pediatricsurgical units. We included children who presented with umbilical granuloma from December 2018 to May 2020. Children who received treatment prior to index visit were excluded. They were randomly allocated to receive NaCl (twice/day application for 5 days by caregiver) or CuSO4 (single application by clinician). Demographic data, compliance in the NaCl group by pill counting method, treatment outcomes, and complications were recorded. Treatment success was defined as complete lesion resolution. Partial or no response was considered treatment failure. Subsequent treatment then reverted to the respective center's routine management.

    RESULT: We recruited 70 participants with 6 dropouts (2 defaulters, 1 vitellointestinal duct, 3 urachal remnants), leaving 64 subjects for final analysis: 31 NaCl, 33 CuSO4. Compliance rate of 77.4% was recorded for NaCl, with 6 (20%) 'poor compliance' participants stopping therapy before completion owing to complete resolution. NaCl group had a significantly higher complete resolution rate (90.4%) compared to CuSO4 (69.7%), p = 0.040. No NaCl participant developed complications versus 9% (n = 3) in CuSO4 (periumbilical superficial skin burn).

    CONCLUSION: Table salt is an ideal treatment choice for umbilical granuloma as it is effective, safe, and readily available.

    LEVEL OF EVIDENCE: II.

  4. Thambusamy E, Thambidorai CR, Nah SA, Gan CS, Wang J, Singaravel S, et al.
    J Pediatr Surg, 2022 Feb;57(2):199-202.
    PMID: 34857376 DOI: 10.1016/j.jpedsurg.2021.10.029
    BACKGROUND: Increased intra-abdominal pressure (IAP) is seen in patients after congenital diaphragmatic hernia (CDH) repair owing to reduction of thoracic contents into the relatively smaller abdominal cavity. In infants, IAP ≥11 mmHg is considered intra-abdominal hypertension (IAH). We aim to determine the incidence of IAH and its relationship with duration of ventilatory support, and gastrointestinal function post CDH repair.

    METHODS: We prospectively recruited all neonates who had CDH repair in four hospitals in Malaysia from June 2018 to October 2020. Intra vesical pressure was used as a proxy for IAP and was measured for 5 consecutive days post surgery. The daily median value was used for analysis. We categorized IAP as <11 mmHg (no IAH), 11-15 mmHg (IAH), and >15 mmHg (severe IAH). Incidence of IAH, its effects on the duration of ventilatory support, and gastrointestinal function were studied.

    RESULTS: There were 24 neonates included in this study. They were operated between day 1 and 6 of life (median: 4 days old). IAH was detected within the first 3 days post surgery, with 83% occurring on day one. Those requiring ventilatory support for more than 3 days contributed the largest proportion of IAH (n = 17, 71%). There was strong correlation between days of IAH and duration of ventilation (p 

  5. Tan WS, Md Hasan Z, Sanmugam A, Singaravel S, Abdullah MY, Nah SA
    J Pediatr Surg, 2023 Feb;58(2):241-245.
    PMID: 36384936 DOI: 10.1016/j.jpedsurg.2022.10.031
    INTRODUCTION: Anorectal manometry may be useful to objectively evaluate anorectal function following definitive pullthrough for Hirschsprung Disease (HD) but there is little published data. Our study aims to investigate anorectal manometry findings and their association with bowel function.

    METHODOLOGY: This was a prospective observational study. Convenience sampling method was used to recruit all HD patients who had definitive pullthrough from January 2019 to December2020 in our institution. High-resolution anorectal manometry (HRAM) was used to record anal resting pressure (ARP), length of high-pressure zone (HPZ), and presence/absence of recto-anal inhibitory reflex (RAIR). The Paediatric Incontinence/Constipation Scoring System (PICSS) was scored for all participants. PICSS is a validated questionnaire with scores mapped to an age-specific normogram to denote constipation, incontinence, and their combinations. Non-parametric and chi-square tests at significance p<0.05 were conducted to examine the relationship between PICSS categories and manometry findings. Ethical approval was obtained.

    RESULTS: There were 32 participants (30 boys). Median age at participation was 26.5 months (range: 13.8-156). Twenty-four (75%) had transanal pullthrough, 8(25%) underwent Duhamel procedure. PICSS scored 10(31.3%) as normal, 8(25%) as constipation, 10(31.3%) as incontinent, and 4(12.5%) as mixed. RAIR was present in 12 patients (37.5%). HPZ, maximum ARP, mean ARP were comparable across all PICSS groups without statistically significant differences. Presence of RAIR was not significantly associated with any PICSS groups (p = 0.13).

    CONCLUSION: Bowel function does not appear to be significantly associated with HRAM findings after definitive pullthrough for HD, but our study is limited by small sample size. RAIR was present in 37.5% patients after pullthrough.

    LEVEL OF EVIDENCE: Level II.

  6. Rajasegaran S, Nooraziz AN, Abdullah A, Sanmugam A, Singaravel S, Gan CS, et al.
    J Pediatr Surg, 2024 Apr;59(4):577-582.
    PMID: 38160184 DOI: 10.1016/j.jpedsurg.2023.12.007
    BACKGROUND: Congenital diaphragmatic hernia (CDH) survivors often experience long-term CDH-associated morbidities, including musculoskeletal, gastrointestinal and respiratory issues. This study evaluates parent-reported health-related quality of life (HRQOL) and family impact of the disease.

    METHODS: Electronic medical records (EMR) were reviewed and phone surveys performed with parents of CDH survivors who underwent repair at our institution from 2010 to 2019. They completed the following Pediatric Quality of Life Inventory™ (PedsQL™) questionnaires: Generic Core Scales 4.0 (parent-proxy report) and Family Impact (FI) Module 2.0. Age-matched and gender-matched healthy controls from an existing database were used for comparison. Subgroup analysis of CDH patients alone was also performed. Appropriate statistical analysis was used with p 

  7. Rajasegaran S, Ahmad NA, Tan SK, Lechmiannandan A, Tan YW, Sanmugam A, et al.
    J Pediatr Surg, 2024 Aug 13.
    PMID: 39237378 DOI: 10.1016/j.jpedsurg.2024.161687
    BACKGROUND: Quality of life (QOL) is an important clinical endpoint in paediatric chronic conditions. How parent-proxy reports differ from child self-reported QOL in patients with anorectal malformation (ARM) and Hirschsprung's disease (HD) has not been well examined to date. This study evaluates agreement between parent-proxy and child-reported QOL scores in ARM and HD patients compared to healthy controls.

    METHODS: We recruited ARM and HD patients aged 5-17 years and their parents at four tertiary referral centres between December 2020 to February 2023 who had corrective surgery done >12 months prior. Healthy controls were age-matched and gender-matched. They completed the Pediatric Quality of Life Inventory™ (PedsQL™) Generic Core Scales and General Well-Being (GWB) Scale. The questionnaires were administered in parallel parent-proxy-report and child self-report formats. Appropriate statistical analysis was performed with p 

  8. Tan SK, Sanmugam A, Danaee M, Ramanujam TM, Nallusamy MA, Zahari Z, et al.
    Sultan Qaboos Univ Med J, 2019 Nov;19(4):e352-e358.
    PMID: 31897319 DOI: 10.18295/squmj.2019.19.04.011
    Objectives: Transition of care (TOC) from paediatric to adult care is still at an early stage in Malaysia. This study aimed to explore current practices and perspectives regarding TOC among paediatric surgeons in Malaysia.

    Methods: This study was carried out between June and December 2017. All 48 paediatric surgeons currently working in Malaysia were invited to participate in a questionnaire-based survey to assess demographic characteristics and practices and perspectives regarding TOC.

    Results: A total of 38 paediatric surgeons participated in the survey (response rate: 79.2%). Overall, 97.4% did not have an organised TOC model in their institution, with most (65.8%) caring for paediatric patients with complex surgical conditions until adulthood. Although the majority (86.8%) felt that care should be transitioned to adult surgeons with appropriate credentials, most surgeons (84.2%) nevertheless preferred to be involved in the management of adolescent patients after transition. However, there was no consensus regarding the most suitable age to begin the transition. Years of experience as a paediatric surgeon and place of practice did not affect overall TOC practice scores (P >0.050 each). The presence of adult comorbidities was considered the most common reason to initiate TOC (81.6%), while the lack of TOC guidelines was perceived to be the greatest barrier (84.2%).

    Conclusion: This study provides a better understanding of TOC from the point of view of paediatric surgeons in Malaysia. However, further studies involving other stakeholders (i.e. patients and adult surgeons) are needed to help formulate a suitable and successful TOC model in this setting.

  9. Rajasegaran S, Ahmad NA, Tan SK, Lechmiannandan A, Tan YW, Sanmugam A, et al.
    Pediatr Surg Int, 2024 Jul 24;40(1):209.
    PMID: 39046543 DOI: 10.1007/s00383-024-05792-z
    PURPOSE: Down syndrome (DS) is a common abnormality associated with anorectal malformation (ARM) and Hirschsprung's disease (HD). However, quality of life (QOL) in ARM and HD patients with DS is under-researched. This study compares parent-reported QOL and bowel function in ARM and HD patients with DS to those without.

    METHODS: Between December 2020 to February 2023, parents of ARM and HD patients with and without DS aged 3-17 years who had undergone surgery > 12 months prior at four tertiary referral centers were recruited. We used the Pediatric Quality of Life Inventory™ (PedsQL™) Generic Core Scales, General Well-Being (GWB) Scale and Family Impact (FI) Module questionnaires, and the Rintala bowel function score (BFS).

    RESULTS: There were 101 ARM, 9 (8.9%) of whom had DS; and 87 HD, of whom 6 (6.9%) had DS. Parent-reported Core scores in ARM and HD with DS were comparable to those without DS. However, ARM and HD with DS had worse scores in the FI Module and bowel function than those without DS.

    CONCLUSION: Although parent-reported QOL in ARM and HD with DS is similar to those without DS, family impact and BFS are worse. Our findings are limited by small sample size in proportion of DS patients.

  10. Jalunis MM, Hng SY, Eg KP, Gowdh NFM, Sanmugam A, Nah SA, et al.
    Indian J Pediatr, 2024 Jun;91(6):632.
    PMID: 38224429 DOI: 10.1007/s12098-024-05021-4
  11. Bal PK, Nah SA, Wan Mohamad Noor WMR, Md Nor MT, Singaravel S, Tan WS, et al.
    Malays J Pathol, 2023 Dec;45(3):457-462.
    PMID: 38155386
    Hirschsprung's Disease (HD) is a congenital disorder causing severe constipation in infants and children. Suction rectal biopsy (SRB) is the preferred technique for obtaining tissue samples for histopathological evaluation. In low-resource settings like Malaysia, cost-effective diagnostic approaches are necessary, making single sample SRB valuable. This study evaluates the diagnostic accuracy and sufficiency of a single macroscopically adequate sample in suction rectal biopsies for the histopathological confirmation of HD. We conducted a retrospective study of children who underwent suction rectal biopsies for the diagnosis of HD at Hospital Raja Perempuan Zainab II (HRPZII), Kota Bharu, Kelantan. A total of 68 patients were included in the study. The inadequacy rate for bedside SRB was 14%, comparable to current literature. Our study found no statistically significant association between sample inadequacy and gestational age, gender, birth weight, or weight at biopsy. Complication rates were 0%, consistent with literature reports. Calretinin staining, an additional technique, was performed in 23 biopsy episodes, with a 4.3% inadequacy rate, compared to 20% in specimens not subjected to calretinin staining. The cost of SRB almost doubled with each additional sample taken, significant in low-resource environments. In conclusion, single sample SRBs can be adequately diagnostic and cost-effective in low-resource settings, providing valuable insights for healthcare facilities in Malaysia and other developing countries. The use of adjunctive techniques such as calretinin staining may improve diagnostic accuracy while maintaining cost-effectiveness. Further prospective studies with larger sample sizes are needed to validate these findings.
  12. Soh HC, Nah SA, Tan WS, Singaravel S, Tan YW, Woon SF, et al.
    Pediatr Surg Int, 2024 Dec 28;41(1):52.
    PMID: 39733003 DOI: 10.1007/s00383-024-05952-1
    BACKGROUND: In middle-income countries, healthcare systems face unique challenges in ensuring timely antenatal detection of congenital abnormalities that require pediatric surgical intervention. Early detection can significantly improve outcomes, yet resource constraints often limit access to diagnostic technologies. This study evaluates the antenatal detection rate of congenital abnormalities referred to pediatric surgical services in three Malaysian tertiary centers and examines its effect on maternal anxiety.

    METHODS: A prospective observational study was conducted at Hospital Raja Permaisuri Bainun (HRPB), Hospital Sultanah Aminah (HSA), and University of Malaya Medical Centre (UMMC) over a 8 month period. Data were collected from mothers of neonates born with congenital abnormalities, and the Spielberg State-Trait Anxiety Inventory (STAI) was used to assess maternal anxiety.

    RESULTS: A total of 58 patients were recruited. The overall antenatal detection rate for congenital abnormalities was 43.1%, comparable to high-income countries despite resource limitations. Antenatal counselling by pediatric surgeons was rare (6.9%) and showed no significant reduction in maternal anxiety (p = 0.374).

    CONCLUSION: The antenatal detection rates at the three Malaysian centers align with those in more developed nations, underscoring the potential of middle-income healthcare systems to deliver high-quality prenatal care. However, improving access to diagnostic technologies and involving pediatric surgical teams in antenatal counselling could further enhance care.

  13. Mahat N, Chiang LW, Chen Y, Razak NHA, Abdullah MY, Sanmugam A, et al.
    Pediatr Surg Int, 2024 Aug 27;40(1):244.
    PMID: 39191932 DOI: 10.1007/s00383-024-05830-w
    PURPOSE: Early diagnosis of biliary atresia (BA) is critical for best outcomes, but is challenged by overlapping clinical manifestations with other causes of obstructive jaundice in neonates. We evaluate the performance of the modified Simple BA Scoring System (SBASS) in diagnosing BA.

    METHODS: We performed a prospective, cross-sectional study on infants with cholestatic jaundice (June 2021-December 2022). Modified SBASS scoring was applied and compared to the eventual diagnosis (as per intraoperative cholangiogram (IOC) and liver histopathology). The score (0-6), consists of gall bladder length  0.7(+ 2), gamma-glutamyl transferase (GGT) ≥ 200 U/L (+ 2).

    RESULTS: 73 were included: Fifty-two (71%) had BA. In the non-BA group, 6 (28%) had percutaneous cholangiography (PTC) while 15 (72%) had intraoperative cholangiogram (IOC). At a cut-off of 3, the modified SBASS showed sensitivity of 96.2%, specificity of 61.9% and overall accuracy of 86.3% in diagnosing BA. Area under receiver operating characteristic curve was 0.901. GGT had the highest sensitivity (94.2%), while triangular cord sign showed the highest specificity at 95.2%.

    CONCLUSION: The SBASS provides a bedside, non-invasive scoring system for exclusion of BA in infantile cholestatic jaundice and reduces the likelihood of negative surgical explorations.

  14. Rajasegaran S, Chandrasagran RA, Tan SK, Ahmad NA, Lechmiannandan A, Sanmugam A, et al.
    Pediatr Surg Int, 2024 May 03;40(1):119.
    PMID: 38700671 DOI: 10.1007/s00383-024-05709-w
    PURPOSE: Patients with anorectal malformation (ARM) and Hirschsprung's disease (HD) live with long-term impact of these diseases even into adulthood. We aimed to explore the physical, social and emotional impact of these diseases in adolescents and young adults to develop best practices for transition care.

    METHODS: We conducted one-on-one in-depth interviews with ARM and HD patients aged  ≥ 11 years who had undergone surgery at four tertiary referral centers. All interviews were audio-recorded and transcribed verbatim. We analyzed transcripts for recurring themes, and data were collected until data saturation was reached. Three researchers independently coded the transcripts for major themes using thematic analysis approach.

    RESULTS: We interviewed 16 participants (11 males) between October 2022 and April 2023. Ages ranged from 11 to 26 years. Five major themes emerged: (1) personal impact (subthemes: physical, emotional and mental health, social, school), (2) impact on family, (3) perceptions of their future (subthemes: relationships, career, state of health), (4) sources of support (subthemes: family, peers, partner), and (5) transition care (subthemes: concerns, expectations). Only females expressed concerns regarding future fertility.

    CONCLUSION: This study highlights the evolving problems faced by adolescents and young adults with ARM and HD, especially gender-specific concerns. Our findings can inform efforts to provide individualized care.

  15. Rajasegaran S, Ahmad NA, Tan SK, Lechmiannandan A, Mohamed OM, Cheng JQ, et al.
    Arch Dis Child, 2024 Apr 22.
    PMID: 38649254 DOI: 10.1136/archdischild-2023-326724
    PURPOSE: Children with anorectal malformation (ARM) and Hirschsprung's disease (HD) often experience bowel symptoms into adulthood, despite definitive surgery. This study evaluates the quality of life (QOL) and bowel functional outcome of children treated for ARM and HD in comparison to healthy controls.

    METHODS: Between December 2020 and February 2023, we recruited patients with ARM and HD aged 3-17 years at four tertiary referral centres, who had primary corrective surgery done >12 months prior. Healthy controls were age-matched and sex-matched. All participants completed the Pediatric Quality of Life Inventory Generic Core Scales 4.0, General Well-Being (GWB) Scale 3.0 and Family Impact (FI) Module 2.0 Questionnaires. Bowel Function Score (BFS) Questionnaires were also administered. We also performed subgroup analysis according to age categories. Appropriate statistical analysis was performed with p<0.05 significance. Ethical approval was obtained.

    RESULTS: There were 306 participants: 101 ARM, 87 HD, 118 controls. Patients with ARM and HD had significantly worse Core and FI Scores compared with controls overall and in all age categories. In the GWB Scale, only ARM and HD adolescents (13-17 years) had worse scores than controls. ARM and HD had significantly worse BFSs compared with controls overall and in all age categories. There was significant positive correlation between BFS and Core Scores, GWB Scores and FI Scores.

    CONCLUSION: Patients with ARM and HD had worse QOL than controls. Lower GWB Scores in adolescents suggests targeted interventions are necessary. Bowel function influences QOL, indicating the need for continuous support into adulthood.

  16. Vythilingam G, Larsson HM, Yeoh WS, Zainuddin SAM, Engelhardt EM, Sanmugam A, et al.
    Urology, 2025 Feb;196:294-299.
    PMID: 39710073 DOI: 10.1016/j.urology.2024.12.016
    OBJECTIVE: To engineer an acellular mesh to reconstruct the urethra to replace the current surgical practice of using autologous tissue grafts. Cell based approaches have shown progress. However, these have been associated with high costs and logistical challenges.

    MATERIALS AND METHODS: Acellular meshes were engineered using liquid collagen. They underwent in vitro, mechanical and bench testing by surgeons. Sixty-nine male New Zealand rabbits were used to refine the design. The final prototype based on the TissueSpan patented technology was then implanted again in a 2 cm long urethral defect in 9 rabbits and in a 4 cm long defect in 6 dogs.

    RESULTS: The TissueSpan technology platform allows for the manufacturing of tubular and rectangular meshes in different diameters and thicknesses. The tubular mesh acted as physical conduit to gap the urethral defect with a patent urethra demonstrated after 1month in both animal models. The mesh was absorbed within 1-3months. Spontaneous urothelial coverage of the mesh and smooth muscle cell migration into the surgical area was demonstrated even in a 4 cm long urethral defect. A first in man clinical trial was subsequently initiated.

    CONCLUSION: The acellular mesh may have the potential to be an off-the-shelf product for substitution urethroplasty. Its mechanical properties allow surgeons to easily create a physical conduit while its material properties favor tissue remodeling. A large-scale clinical trial is still required to further confirm the safety, performance, and patient benefit of this new medical device.

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