MBBS(C'bo), M.Sc.(Community Medicine)(C'bo),MD(Community Medicine)(C'bo)

• Epidemiology of non-communicable diseases & tropical diseases
• Biostatistics
• Medical education

• Sasikumar, S., K. S. N. Wijayarathna, K. A. M. S. Karunaratne, U. Gobi, A. Pathmeswaran, and Anuruddha M. Abeygunasekera. "Pathological characteristics of primary bladder carcinoma treated at a Tertiary Care Hospital and changing demographics of bladder cancer in Sri Lanka."
• Sasikumar, S., K. S. N. Wijayarathna, K. A. M. S. Karunaratne, U. Gobi, A. Pathmeswaran, and Anuruddha M. Abeygunasekera. "Pathological characteristics of primary bladder carcinoma treated at a Tertiary Care Hospital and changing demographics of bladder cancer in Sri Lanka."
• Niriella , A. Kasturiratna , S. De Silva , R. Perera , C. Subasinghe , K. Kodisinghe , C. Piyarathna , V. Rishikeshavan , A. Dassanayake , A. De Silva , A. Pathmeswaran , N. Kato , J. de Silva "Population- A Community Cohort follow-up Study" 23rd United European Gastroenterology Week Barcelona 2015: 25.
• Fernando, R., A. Pathmeswaran, and M. D. P. Pinto. "Epidemiology of goitre in Sri Lanka in the post-iodization era." Ceylon Medical Journal 60, no. 2 (2015): 41-44.

• Devanarayana NM, Rajindrajith S, Pathmeswaran A, Abegunasekara C, Gunawardena NK, Benninga MA "Epidemiology of irritable bowel syndrome in children and adolescents in Asia." Journal of Pediatric Gastroenterology and Nutrition 60(6)(2015):792-798

• Niriella, M. A., A. Hapangama, H. P. Luke, K. Withanaarachchi, A. Pathmeswaran, K. A. Kuruppuarachchi, and H. J. de Silva Prevalence of hepatitis B and hepatitis C infections and their relationship to injectable drug use in a cohort of Sri Lankan prison inmatesThe Ceylon medical journal 60, no. 1 (2015): 10-12.

• De Silva, Shamila T., Ruwan P. Perera, Madunil A. Niriella, Arunasalam Pathmeswaran, and Hithanadura Janaka de Silva."Frequency, pattern and short-term outcome of chronic renal dysfunction in patients with cirrhosis: a prospective study using HRS and ADQI-IAC criteria." European Journal of Gastroenterology & Hepatology (2014).

• Ranawaka CK, Miththinda JK, Senanayake SM, de Alwis WR, Mufeena MN, NiriellaMA, Dassanayake AS, de Silva AP, Pathmeswaran A, de Silva HJ. Validation of the Sinhala version of the Chronic Liver Disease Questionnaire (CLDQ) for assessment of health related quality of life among Sri Lankan cirrhotics. Ceylon Med J. 2013Dec;58(4):156-62. PubMed PMID: 24385057.

• Nishad AA, de Silva IS, Perera HL, Pathmeswaran A, Kastutiratne KT,Premawardhena AP. Role of Red Cell Distribution Width in Screening for Hb E Traitin Population Screening for Hemoglobin Disorders. J Pediatr Hematol Oncol. 2013 Oct 31. [Epub ahead of print] PubMed PMID: 24276030.

• Hapangama A, Kuruppuarachchi KA, Pathmeswaran A. Substance use disorder amongmentally ill patients in a General Hospital in Sri Lanka: prevalence and correlates. Ceylon Med J. 2013 Sep;58(3):111-5. .PubMed PMID: 24081171.

• De Silva HJ, Kasturiratne A, Pathmeswaran A, Lalloo DG. Snakebite: the true disease burden has yet to be determined. Ceylon Med J. 2013 Sep;58(3):93-5. PubMed PMID: 24081167.

• Senanayake SM, Fernandopulle AN, Niriella MA, Wijesinghe NT, Ranaweera A,Mufeena MN, Pathmeswaran A, Nawarathne NM, de Silva AP, de Silva HJ. Thelong-term outcomes of a cohort of Sri Lankan patients with ulcerative colitis: a retrospective study at two national referral centers and review of literature.Clin Exp Gastroenterol. 2013 Sep 20;6:195-200. .eCollection 2013. PubMed PMID: 24068873; PubMed Central PMCID: PMC3782511.

• Amarasiri WA, Pathmeswaran A , de Silva AP, Dassanayake AS, Ranasinha CD, deSilva HJ. Gastric motility following ingestion of a solid meal in a cohort of adult asthmatics. J Neurogastroenterol Motil. 2013 Jul;19(3):355 - 65. Epub 2013 Jul 8. PubMed PMID: 23875103; PubMed Central PMCID: PMC3714414

• Ebenezer R, Gunawardena K, Kumarendran B , Pathmeswaran A , Jukes MC, Drake LJ, de Silva N. Cluster - randomised trial of the impact of school - based deworming and iron supplementation on the cognitive abilities of schoolchildren in Sri Lanka's plantation sector. Trop Med Int Health. 2013 Aug;18(8):9 42 - 51. PubMed PMID: 23837404

• Rajeshkannan N, Pathmeswaran A . Prevalence of postpartum anal incontinence: a cross sectional study in Northern Sri Lanka. Ceylon Med J. 2013 Jun;58(2):76 - 9. PubMed PMID: 2381 7938

• Karunanayake AL, Pathmeswaran A , Kasturiratne A, Wijeyaratne LS. Risk factors for chronic low back pain in a sample of suburban Sri Lankan adult males. Int JRheum Dis. 2013 Apr;16(2):203 - 10. Epub 2013 Apr 26.PubMed PMID : 23773646.

• Amarasiri DL, Pathmeswaran A, de Silva HJ, Ranasinha CD. Response of the airways and autonomic nervous system to acid perfusion of the esophagus inpatients with asthma: a laboratory study. BMC Pulm Med. 2013 Jun 2;13(1):33.[Epub ahead of print ] PubMed PMID: 23724936; PubMed Central PMCID: PMC3682888

• Fernando RF, Chandrasinghe PC, Pathmeswaran AA. The prevalence of autoimmune thyroiditis after universal salt iodisation in Sri Lanka. Ceylon Med J. 2012 Sep;57(3):116 - 9. PubMed PMID: 23086027.

• Amarasiri DL, Pathmeswaran A, Dassanayake AS, de Silva AP, Ranasinha CD, deSilva HJ. Esophageal motility, vagal function and gastroesophageal reflux in acohort of adult asthmatics. BMC Gastroenterol. 2012 Oct 12;12:140. PubMed PMID: 23057471; PubMed Central PMCID:PMC3527260

• Gunawardena K, Kumarendran B, Ebenezer R, Gunasingha MS, Pathmeswaran A, deSilva N. Soil - transmitted helminth infections among plantation sector schoolchildren in Sri Lanka: prevalence after ten years of preventive chemotherapy. PLoS Negl Trop Dis. 2011 Sep;5(9):e1341. . Epub 2011 Sep 27. PubMed PMID: 21980549; PubMed Central PMCID: PMC3181244

• De Silva AP, Kumarasena RS, Perera Keragala SD, K alubowila U, Niriella M,Dassanayake AS, Pathmeswaran A, de Silva HJ. The prone 12 o'clock positionreduces ileal intubation time during colonoscopy compared to the left lateral 6o'clock (standard) position. BMC Gastroenterol. 2011 Aug 4;11:89. doi:10.1186/1 471 - 230X - 11 - 89. PubMed PMID: 21816067; PubMed Central PMCID: PMC3160404

• D e Silva HA, Pathmeswaran A, Ranasinha CD, Jayamanne S, Samarakoon SB,Hittharage A, Kalupahana R, Ratnatilaka GA, Uluwatthage W, Aronson JK, ArmitageJM, Lalloo DG, de Silva HJ. Low - d ose adrenaline, promethazine, and hydrocortisonein the prevention of acute adverse reactions to antivenom following snakebite: a randomised, double - blind, placebo - controlled trial. PLoS Med. 2011May;8(5):e1000435. doi: 10.1371/journal.pmed.1000435. Epub 20 11 May 10. PubMed PMID: 21572992; PubMed Central PMCID: PMC3091849

• Hewage SN, Salgado LS, Fernando GM, Liyanage PL, Pathmeswaran A, de Silva NR.Selection of medical students in Sri Lanka: time to re - think criteria? Ceylon MedJ. 2011 Mar;56(1):22 - 8. PubMe d PMID: 21542430

• Premaratna R, Jayasinghe KG, Liyanaarachchi EW, Weerasinghe OM, Pathmeswaran A, de Silva HJ. Effect of a single dose of methyl prednisolone as rescuemedication for patients who develop hypotensive dengue shock syndrome during the febrile phase: a retrospective observational study. Int J Infect Dis. 2011Jun;15(6):e433 - 4. . Epub 2011 May 6. PubMed PMID: 21530348

• Amarasiri LD, Pathmeswaran A, de Silva HJ, Ranasinha CD. Prevalence ofgastro - oesophageal reflux disease symptoms and reflux - associated respiratorysymptoms in asthma. BMC Pulm Med. 2010 Sep 15;10:49. PubMed PMID: 20843346; PubMed Central PMCID: PMC2954896

• De Silva AP, Niriella MA, Perera H, Aryasingha S, Kalubovila U, M anchanayake J, Dassanayake AS, Devanarayana NM, Pathmeswaran A, de Silva HJ. Is a six hourfast after a rice meal sufficient before upper gastrointestinal endoscopy? Scand J Gastroenterol. 2010 Aug;45(7 - 8):987 - 91. . PubMed PMID : 20334477

• Siriwardana PN, Hewavisenthi SJ, Pathmeswaran A, Deen KI. Colonoscopicultrasound is associated with a learning phenomenon despite previous rigid probe experience. Indian J Gastroenterol. 2009 May - Jun;28(3):96 - 8. Epub 2009 Nov 12. PubMed PMID: 19907959.

• Siriwardana PN, Pathmeswaran A, Hewavisenthi J, Deen KI. Histopathologyreporting in colorectal cancer: a proforma improves quality. Colorectal Dis. 2009Oct;11(8):849 - 53. . Epub 2008 Aug 21. PubMedPMID: 19740157

• D e Silva AP, Karunanayake AL, Dissanayaka TG, Dassanayake AS, Duminda HK,Pathmeswaran A, Wickramasinghe AR, de Silva HJ. Osteoporosis in adult Sri Lankan inflammatory bowel disease patients. World J Gastroenterol. 2009 J ul28;15(28):3528 - 31. PubMed PMID: 19630109; PubMed Central PMCID: PMC2715980

• Amarasiri LD, Pathmeswaran A, De Silva AP, Dassanayake AS, Ranasinha CD, DeSilva J. Comparison of a composite symptom score assessing both symptom frequencyand severity with a s core that assesses frequency alone: a preliminary study todevelop a practical symptom score to detect gastro - oesophageal reflux disease in a resource - poor setting. Eur J Gastroenterol Hepatol. 2010 Jun;22(6):662 - 8. PubMed PMID: 19491697

• Perera P, Pathmeswaran A. A pilot study on assessment of racial affinity ofSri Lankan population using discriminant function statistics and a fewestablished morphological racial traits. Leg Med (Tokyo). 2009 Apr;11 Suppl1:S182 - 5. Epub 2009 Mar 3. PubMed PMID:19261526

• Kasturiratne A, Wickremasinghe AR, de Silva N, Gunawardena NK, PathmeswaranA, Premaratna R, Savioli L, Lalloo DG, de Silva HJ. The global burden ofsnakebite : a literature analysis and modelling based on regional estimates ofenvenoming and deaths. PLoS Med. 2008 Nov 4;5(11):e218. doi:10.1371/journal.pmed.0050218. PubMed PMID: 18986210; PubMed Central PMCID:PMC2577696

• Premaratna R, Pathmeswaran A, Amarasekara ND, Motha MB, Perera KV, de SilvaHJ. A clinical guide for early detection of dengue fever and timing ofinvestigations to detect patients likely to develop complications. Trans R SocTrop Med Hyg. 2009 Feb;103(2):1 27 - 31. /j.trstmh.2008.07.024. Epub2008 Sep 21. PubMed PMID: 18809191

• Gunawardena NK, Amarasekera ND, Pathmeswaran A, de Silva NR. Effect ofrepeated mass chemotherapy for filariasis control on soil - transmitted helminthinfections in Sri Lanka. Ceylon Med J. 2008 Mar;53(1):13 - 6. PubMed PMID:18590264

• D e Silva HA, Pathmeswaran A, Lalloo DG, de Silva HJ, Aronson JK.Multiple - dose activated charcoal in yellow oleander poisoning. Lancet. 2008 Jun28;371(9631):2171; author reply 2171 - 2. doi: 10.1016/S0 140 - 6736(08)60949 - 6.PubMed PMID: 18586169

• Samarawickrema N, Pathmeswaran A, Wickremasinghe R, Peiris - John R,Karunaratna M, Buckley N, Dawson A, de Silva J. Fetal effects of environmentalexposure of pregnant women to organophosphorus compounds in a rural farming community in Sri Lanka. Clin Toxicol (Phila). 2008 Jul;46(6):489 - 95.. PubMed PMID: 18584359

• Salgado SS, Pathmeswaran A. Effects of placental infarctions on the fetaloutcome in pregnancies complicated by hypertension. J Coll Physicians Surg Pak.2008 Apr;18(4):213 - 6. . PubMed PMID: 18474153

• De Silva DG, Rajindrajith S, Pathmeswaran A, Karunasekera W. An intervention study to monitor weight gain in infants using a home based complementary foodr ecipe and a hand blender. Ceylon Med J. 2007 Sep;52(3):79 - 83. PubMed PMID:18020022

• De Silva P, Jayawardana P, Pathmeswaran A. Concurrent validity of the alcoholuse disorders identification test (AUDIT). Alcohol Alcohol. 2008Jan - Feb;43(1):49 - 50. Epub 2007 Sep 11. PubMed PMID: 17855334

• Chandrasena TG, Hapuarachchi HC, Dayanath MY, Pathmeswaran A, de Silva NR.Intestinal parasites and the growth status of internally displaced children inSri Lanka. Trop Doct. 2007 Jul;37(3):163 - 5. PubMed PMID: 17716506

• Luk umar P, Pathmeswaran A. Factors associated with home deliveries inThampalakamam, Trincomalee. Ceylon Med J. 2006 Jun;51(2):59 - 62. PubMed PMID:17180810

• de Silva NR, Chandratilake MN, Pathmeswaran A, Dias R. Selection of students to medical school. Ceylon Med J. 2006 Jun;51(2):51 - 2. PubMed PMID: 17180808

• Chandrasena TG, Premaratna R, Muthugala MA, Pathmeswaran A, de Silva NR.Modified Dermatology Life Quality Index as a measure of quality of life inpatients with filarial lymphoedema. Trans R Soc Trop Med H yg. 2007Mar;101(3):245 - 9. Epub 2006 Nov 13. PubMed PMID: 17098268

• de Silva NR, Pathmeswaran A, de Silva N, Edirisinghe JS, Kumarasiri PV,Parameswaran SV, Seneviratne R, Warnasuriya N, de Silva HJ. Admission to medical schools in Sri Lanka: predictive val idity of selection criteria. Ceylon Med J.2006 Mar;51(1):17 - 21. PubMed PMID: 16898032

• Pathmeswaran A, Kasturiratne A, Fonseka M, Nandasena S, Lalloo DG, de SilvaHJ. Identifying the biting species in snakebite by clinical features: anepidemiological tool for community surveys. Trans R Soc Trop Med Hyg. 2006Sep;100(9):874 - 8. Epub 2006 Jan 18. PubMed PMID: 16412486

• de Silva HA, Pathmeswaran A, Gunatilake SB. Efficacy of rivastigmine onactivities of daily living in Sri Lankan patients with Alzheimer d isease and onimproving caregiver burden: a prospective study. Ceylon Med J. 2005Sep;50(3):106 - 9. PubMed PMID: 16252573

• Kasturiratne A, Pathmeswaran A, Fonseka MM, Lalloo DG, Brooker S, de SilvaHJ. Estimates of disease burden due to land - snake bite in Sri Lankan hospitals.Southeast Asian J Trop Med Public Health. 2005 May;36(3):733 - 40. PubMed PMID:16124448

• Pathmeswaran A, Jayatissa R, Samarasinghe S, Fernando A, de Silva RP, ThattilRO, de Silva NR. Health status of primary schoolchildren in Sri Lanka. Ce ylon MedJ. 2005 Jun;50(2):46 - 50. PubMed PMID: 16114767

• Mayooran V, Deen KI, Wijesinghe PS, Pathmeswaran A. Endosonographiccharacteristics of the anal sphincter complex in primigravid Sri Lankan women.Int J Gynaecol Obstet. 2005 Sep;90(3):245 - 50. PubMed PMID: 15967449

• de Silva HA, Hewavisenthi J, Pathmeswaran A, Dassanayake AS, Navaratne NM,Peiris R, de Silva HJ. Comparison of one week and two weeks of triple therapy forthe eradication of Helicobacter pylori in a S ri Lankan population: a randomised, controlled study. Ceylon Med J. 2004 Dec;49(4):118 - 22. PubMed PMID: 15693450

• de Silva NR, Pathmeswaran A, de Silva HJ. Selection of students for admissionto a medical school in Sri Lanka. Ceylon Med J. 2004 Sep;49(3):8 1 - 5. PubMed PMID:15524225

• Selvaratnam RR, de Silva LD, Pathmeswaran A, de Silva NR. Nutritional status and productivity of Sri Lankan tea pluckers. Ceylon Med J. 2003 Dec;48(4):114 - 8. PubMed PMID: 15125401

• De Silva NR, Pathmeswaran A, Fernando SD, Weer asinghe CR, Selvaratnam RR,Padmasiri EA, Montresor A. Impact of mass chemotherapy for the control offilariasis on geohelminth infections in Sri Lanka. Ann Trop Med Parasitol. 2003Jun;97(4):421 - 5. PubMed PMID: 12831528

• de Silva HA, Fonseka MM, Pathmeswara n A, Alahakone DG, Ratnatilake GA,Gunatilake SB, Ranasinha CD, Lalloo DG, Aronson JK, de Silva HJ. Multiple - doseactivated charcoal for treatment of yellow oleander poisoning: a single - blind,randomised, placebo - controlled trial. Lancet. 2003 Jun 7;361(9 373):1935 - 8. PubMedPMID: 12801736

• Premaratna R, Pathmeswaran A, Chandrasekara B, Dissanayake AS, de Silva HJ.Effects of pollution on health of residents in an industrial area in Sri Lanka.Arch Environ Health. 2002 Nov - Dec;57(6):579 - 83. PubMed PMID: 12696 656

• de Silva HA, Saparamadu PA, Thabrew MI, Pathmeswaran A, Fonseka MM, de Silva HJ. Liv.52 in alcoholic liver disease: a prospective, controlled trial. JEthnopharmacol. 2003 Jan;84(1):47 - 50. PubMed PMID: 12499076

• Seneviratne SL, de Silva CE, Fonseka M M, Pathmeswaran A, Gunatilake SB, deSilva HJ. Envenoming due to snake bite during pregnancy. Trans R Soc Trop MedHyg. 2002 May - Jun;96(3):272 - 4. PubMed PMID: 12174776

• Kasturiratne KT, Premaratne BA, Pathmeswaran A, de Silva NR, de Silva HJ.Compliance with the mass chemotherapy program for lymphatic filariasis. CeylonMed J. 2001 Dec;46(4):126 - 9. PubMed PMID: 12164029

• Gibberd R, Pathmeswaran A, Burtenshaw K. Using clinical indicators toidentify areas for quality improvement. J Qual Clin Pract. 2000 Dec;20 (4):136 - 44.PubMed PMID: 11207951