Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item Fish bone migration through a sigmoid colon diverticulum causing an anterior abdominal wall abscess(The College of Surgeons of Sri Lanka, 2024) Ekanayaka, E.M.M.; Gunasekara, K.; Fernando, R.; Chandrasinghe, P.C.; Kumarage, S.No abstract availableItem Intraoperative visualization of biliary anatomy using Indocyanine green (ICG) fluorescence in a Sri Lankan patient cohort(The College of Surgeons of Sri Lanka, 2024) Kumarage, S.K.; Lakshani, D.H.J.P.U.; Pinto, M.D.P.; Chandrasinghe, P.C.INTRODUCTION: Bile duct injury (BDI) is a complication with high morbidity, associated with laparoscopic cholecystectomy (LC). The risk of BDI can be reduced by accurate visualization of the biliary tree with the use of indocyanine green fluorescence (ICG). This study describes the use of this non-invasive technique in a cohort of Sri Lankan patients to visualize the biliary anatomy intraoperatively. METHOD: A total of 121 consecutive patients undergoing LC were included. All received 5 mg of ICG intravenously, 30 minutes prior to induction of anesthesia. The Stryker 1588 laparoscope was used to visualize the anatomical landmarks, both pre and post-dissection of the Calot's triangle, using visible light and near-infrared imaging (NIR). RESULT: In 121 patients (female - 64.5%, median age - 42 years; range of 18-82) included in the study, biliary colic was the commonest indication (70%) for LC. ICG fluorescence resulted in significantly better visualization of the extrahepatic biliary tract (p=<0.001), both pre-dissection (95%CI = 91.7% [85.3%-96.0%]) and post-dissection (95% CI=71.1% [62.1%-79.0%]) of the Calot's triangle. Furthermore, the hepatic ducts were only visualized with ICG. Visualization of the Cystic duct common bile duct junction (CDCBDJ) improved from 6% to 88% (P<0.001) predissection with ICG. Fluorescence enabled the visualization of CDCBDJ post-dissection in all cases compared to 54% without it (P<0.001). ICG enhanced visualization of the Common bile duct (CBD) from 34% to 88% (P<0.001) predissection and 100% visibility post-dissection compared to 62% under visible light (P<0.001). No adverse effects of ICG or bile duct injuries were reported during the study. CONCLUSION: The use of ICG during LC significantly enhanced the identification of biliary landmarks in this cohort. Identification of anatomy can help reduce inadvertent BDI. This safe and effective modality may be considered a routine step in LC.Item Impactful research over impact factor(The College of Surgeons of Sri Lanka, 2024) Chandrasinghe, P.C.No abstract availableItem Single incision laparoscopic surgery (SILS) as surgical option in Crohn’s disease: our experience(Wiely-Blackwell, 2016) Leo, A.; Samaranayake, S.F.; Hodgkinson, J.D.; Santorelli, C.; Chandrasinghe, P.C.; Warusavitarne, J.H.AIM: Single Incision Laparoscopic Surgery (SILS) is a newer mini-invasive. Benefits of SILS in complex Crohn’s disease (CCD), which includes a significant cohort of young patients sometimes needing multiple operations has not been comprehensively assessed. This study analyses our early experience. METHOD: Data were collected prospectively from January 2013 to December 2015. Ileocolic resections, right hemicolectomy, small bowel stricturoplasties and resections SILS were included in the CCD cohort. Primary and re-do surgeries were analysed separately. RESULTS: A total of 45 patients were included: 39 ileocolic resections, 6 small bowel stricturoplasty/resections. Median hospital stay was 8 days (Range - 3 days – 28 days). Three patients from primary (11%) and 2 from re-do group (11%) had to be converted to open surgery. Total complication rate was 35.5% including 31.1% ClavienDindo 1 and 2. In term of operating time, average blood loss, conversion rates, complication rate and hospital stay, there was no significant difference between the groups. Six months follow-up showed no major complications. CONCLUSION: We have demonstrated the feasibility of SILS in patients with CCD. There were no significant differences between primary and re-do surgeries. More robust data and longer follow-up is needed in future studies to evaluate this further.Item Single incision laparoscopic surgery (SILS) for primary surgery in medically refectory ulcerative colitis: a case series(Wiely-Blackwell, 2016) Chandrasinghe, P.C.; Leo, C.A.; Samaranayake, S.F.; Santorelliei, C.; Strouhal, R.; Warusavitarne, J.INTRODUCTION: Medically refractive ulcerative colitis (UC) requires surgical intervention. Due to the ongoing inflammation in the colon this patient group is considered as high risk. Primary surgery includes subtotal colectomy (STC) as the first step of a staged restorative procedure, restorative proctocolectomy (RPC) or panproctocolectomy (PPC) with end ileostomy. Single incision surgery is gaining popularity in this group of patients. METHOD: Patients who underwent single incision surgery for medically refractory UC from 2013 January to 2015 December were prospectively followed up. Demographics, hospital stay and early complications were analyzed. Mann-Whitney U test was used to compare the medians. RESULTS: A total of 34 patients (male – 24, median age – 41.5 years; range 17–69 years) were included. There were 21 STCs, 9 PPCs and 4 RPCs done as primary surgery for medically refractory UC. The median hospital stay was 7 days (4–41 days). Four out of 34 patients had a complication with Clavien-Dindo score above 3; (2-re-operation for obstruction (5%), 2 required intensive care for sepsis (5%). Two procedures (5.8%) had to be converted strategically to open. Three patients had cancer in the resected specimen. The median age of those who had PPC was significantly higher compared to those who had restorative procedures (48 years: range 17–69 Vs 38 years: range 34–64; P < 0.005). CONCLUSION: Single incision surgery for medically refractory UC is safe with an acceptable complication profile in this group of medically unwell patients. The quality of life implications of this procedure require further evaluation.Item Single Incision Laparoscopic Surgery (SILS) as surgical option in Crohn's disease: our experience(Wiely-Blackwell, 2016) Leo, C.A.; Samaranayake, S.F.; Hodgkinson, J.D.; Santorelli, C.; Chandrasinghe, P.C.; Warusavitarne, J.AIM :Single Incision Laparoscopic Surgery (SILS) is a newer technique which is increasing in popularity. The benefit of SILS in complex Crohn's disease (CCD), which includes a significant cohort of young patients sometimes needing multiple operations has not been comprehensively assessed. This study analyses our early experience with this technique. METHOD: Patients who underwent SILS for CCD were included. Data were collected prospectively from Januray 2013 to December 2015. Ileocolic resections, right hemicolectomy, small bowel stricturoplasties and resections were included in the CCD cohort. Primary and re-do surgeries were analysed separately. RESULTS: A total of 45 patients were included: 39 ileocolic resections, 6 small bowel stricturoplasty/resections. Of the total, 27 were primary resections and 18 were re-do resections. In overall, the median age was 41 years (Range – 14 years–72 years), the median hospital stay was 8 days (Range - 3 days–28 days). Three patients from primary (11%) and 2 from re-do group (11%) had to be converted to open surgery. Total complication rate was 35.5% including 31.1% Clavien Dindo 1 and 2. In term of operating time, average blood loss, conversion rates, complication rate and hospital stay, there was no significant difference between the groups. Six months follow-up showed no major complications. CONCLUSION:We have demonstrated the feasibility of SILS in patients with CCD undergoing both primary and re-do surgeries. There were no significant differences between the two groups. More robust data and longer follow-up is needed in future studies to evaluate this further.Item Single incision laparoscopic surgery (SILS) for primary surgery in medically refectory ulcerative colitis: a case series(Wiely-Blackwell, 2016) Chandrasinghe, P.C.; Leo, C.A.; Samaranayake, S.F.; Santorelli, C.; Strouhal, R.; Warusavitarne, J.AIM:Medically refractive ulcerative colitis (UC) requires surgical intervention. Primary surgery includes subtotal colectomy (STC), restorative proctocolectomy (RPC) or panproctocolectomy (PPC) with end ileostomy. Single incision surgery is gaining popularity in this group of patients. METHOD: Patients who underwent single incision surgery for medically refractory UC from 2013 January to 2015 December were prospectively followed up. Demographics, hospital stay and early complications were analysed. RESULTS: A total of 34 patients were included. There were 21 STCs, 9 PPCs and 4 RPCs done as primary surgery for medically refractory UC. The median hospital stay was 7 days (range: 4–41 days). Four out of 34 patients had a complication with Clavien-Dindo score above 3; (2-re-operation for obstruction (5%), 2 required intensive care for sepsis (5%). Two procedures (5.8%) had to be converted strategically to open. Three patients had cancer in the resected specimen. The median age of those who had PPC was significantly higher compared to those who had restorative procedures (48 years: range 17–69 vs 38 years: range 34–64; P < 0.005). CONCLUSION: Single incision surgery for medically refractory UC is safe with an acceptable complication profile. The quality of life implications of this procedure require further evaluation.Item Neoadjuvant chemoradiation for rectal cancer achieves satisfactory tumour regression and local recurrence - result of a dedicated multi-disciplinary approach from a South Asian Centre(BioMed Central, 2023) Deen, R.; Ediriweera, D.S.; Thillakaratne, S.; Hewavissenthi, J.; Kumarage, S.K.; Chandrasinghe, P.C.BACKGROUND: Pre-operative long-course chemoradiotherapy (CRT) for rectal cancer has resulted in improvement in rates of restorative rectal resection and local recurrence by inducing tumour downstaging and downsizing. Total mesorectal excision (TME) is a standardised surgical technique of low anterior resection aimed at the prevention of local tumour recurrence. The purpose of this study was to evaluate tumour response following CRT in a standardised group of patients with rectal cancer. METHODS: One hundred and thirty-one patients (79 male; 52 female, median age 57; interquartile range 47-62 years) of 153 with rectal cancer who underwent pre-operative long-course CRT were treated by standardised open low anterior resection at a median of 10 weeks post-CRT. Sixteen of 131 (12%) were 70 years or older. Median follow-up at the time of analysis was 15 months (interquartile range 6-45 months). Pathology reports were analysed based on AJCC-UICC classification using the TNM system. Data recorded were overall/subgrades of tumour regression; good, moderate or poor, lymph node harvest, local recurrence, disease-free and overall survival using standard statistical methods. RESULTS: 78% showed tumour regression post-CRT; 43% displayed good tumour regression/response while 22% had poor tumour regression/response. All patients had a pre-operative T-stage of either T3 or T4. Post-operation, good responders had a median T stage of T2 vs. T3 in poor responders (P = 0.0002). Overall, the median lymph node harvest was < 12. There was no difference in the number of nodes harvested in good vs. poor responders (Good/moderate-6 nodes vs. Poor- 8; P = 0.31). Good responders tended to have a lesser number of malignant nodes vs. poor responders (P = 0.31). Overall, local recurrence was 6.8% and the anal sphincter preservation rate was 89%. Predicted 5-year disease-free and overall survival were similar between good and poor responders. CONCLUSION: Long-course CRT resulted in satisfactory tumour regression and enabled consideration for safe, sphincter-saving resection in rectal cancer. A dedicated multi-disciplinary team approach achieved a global benchmark for local recurrence in a resource-limited setting.Item Adapting surgical services at a tertiary care unit amidst the COVID19 pandemic: a Sri Lankan perspective(College of Surgeons of Sri Lanka, 2020) Chandrasinghe, P.C.; Siriwardana, R.C.; Kumarage, S.K.; Gunetilleke, B.; Weerasuriya, A.; Munasinghe, N.M.; Thilakarathne, S.T.; Pinto, D.; Fernando, R.F.No Abstract available.Item A Novel structure for online surgical undergraduate teaching during the COVID-19 pandemic(BioMed Central., 2020) Chandrasinghe, P.C.; Siriwardana, R.C.; Kumarage, S.K.; Munasinghe, B.N.L.; Weerasuriya, A.; Tillakaratne, S.; Pinto, D.; Gunetilleke, B.; Fernando, F.R.BACKGROUND: The Covid-19 pandemic necessitated the delivery of online higher education. Online learning is a novel experience for medical education in Sri Lanka. A novel approach to undergraduate surgical learning was taken up in an attempt to improve the interest amongst the students in clinical practice while maximizing the limited contact time. METHOD: Online learning activity was designed involving medical students from all stages and multi consultant panel discussions. The discussions were designed to cover each topic from basic sciences to high-level clinical management in an attempt to stimulate the student interest in clinical medicine. Online meeting platform with free to use basic plan and a social media platform were used in combination to communicate with the students. The student feedback was periodically assessed for individual topics as well as for general outcome. Lickert scales and numeric scales were used to acquire student agreement on the desired learning outcomes. RESULTS: A total of 1047 student responses for 7 questionnaires were analysed. During a 6-week period, 24 surgical topics were discussed with 51 contact hours. Eighty-seven per cent definitely agreed (highest agreement) with the statement 'students benefitted from the discussions'. Over 95% have either participated for all or most sessions. A majority of the respondents (83.4%) 'definitely agreed' that the discussions helped to improve their clinical sense. Of the total respondents, 79.3% definitely agreed that the discussions helped to build an interest in clinical medicine. Around 90% agreed that both exam-oriented and clinical practice-oriented topics were highly important and relevant. Most widely raised concerns were the poor Internet connectivity and limitation of access to the meeting platform. CONCLUSION: Online teaching with a novel structure is feasible and effective in a resource-limited setting. Students agree that it could improve clinical interest while meeting the expected learning outcomes.
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