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Dr. Ramachandran Narayanamenon

Dr. Ramachandran Narayanamenon

Senior Consultant - GI, HPB and Multiorgan Transplant Surgery


MS (General Surgery)

DNB (General Surgery)

DNB (Surgical Gastroenterology)

Senior Clinical Fellowship in Multi Organ Transplant Surgery

(Cambridge University Hospital, UK)

Dr. Ramachandran Narayanamenon pursued his MBBS from Government Medical College, Thrissur (April 1997) and did his MS in General Surgery from Government Medical College, Madurai(March 2001). Post MS, he attained DNB in General Surgery(May 2002) and DNB in Surgical Gastroenterology from Amrita Institute of Medical Sciences - Kochi(May 2008).

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He underwent Senior Clinical Fellowship in Multi Organ Transplant Unit of Cambridge University Hospitals in UK(March 2013- April 2014) and gained experience in various aspects of patient care of liver, pancreas, small bowel and multi-visceral transplantation. 

Before joining Rajagiri, he has been working as Clinical Associate Professor in GI and Solid Organ Transplant Services at AIMS Kochi for more than 12 years and was one of the key persons involved in the Complex hepato-biliary surgery, adult and paediatric liver transplantation, Pancreas- kidney transplantation, intestinal transplantation and Robotic liver donor hepatectomies. He also had training in advanced vascular surgery and was one of the faculty members of vascular surgery Dept at AIMS - Kochi. He had also received training in Robotic liver donor surgery from Severance Hospital - Seoul in 2018 and is recognised as one among the pioneer in the live donor robotic liver surgery in India. He has more than 20 publications in National & International journals to his credit. Dr. Ramachandran has been actively involved in a series of research programmes and is an examiner for DNB(Surgical Gastroenterology) and MCh GI Surgery exit exam.

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Areas of Interest


  • Hepato biliary and pancreatic surgeries
    • Liver tumours
    • Bile duct diseases-Cholangio carcinoma
    • Pancreatic tumours and Carcinoma 
    • Chronic pancreatitis.
  • Robotic Surgery (Colo-rectal and HPB Surgeries)
  • Mesenteric revascularization surgeries
  • Abdominal Organ Transplantation
    • Adult and Paediatric liver transplantation
    • Pancreas- Kidney transplantation
    • Small Bowel and Multi Visceral Transplantation
    • Intestinal Rehabilitation
  • Transplant Immunology



  • Spectrum of cystic neoplasm of pancreas- A clinic pathological and surgicalanalysis.RCNMenon,S Sudhindran,sudheer OV,Pdhar – Hepato gastroenterology-Supplement- April 2006.
  • “Isolated pancreatic tuberculosis” A diagnostic dilemma! RCN Menon,SSudhindran,sudheer OV,Pdhar – Hepato Gastroenterology-Supplement- December-2006.
  • Cost and efficacy of immunosuppression using generic products following living donor liver transplantation in India-S. Sudhindran,ShameenaAboobacker,Ramachandran N Menon,G Unnikrishnan,OV Sudheer,Puneet Dhar-Indian J Gastroenterology (January–February 2012- 31(1):20–23.
  • Bilirubin as a predictor of early mortality after liver transplantation JOURNAL OF CLINICAL AND EXPERIMENTAL HEPATOLOGY 1(2): 144–145 • SEPTEMBER 2011.
  • Hepatic steatosis—Quantification by non-enhanced CT scan U Dataram, ST Binoj, P Dhar, OV Sudheer, G Unnikrishnan, R Menon, D Balakrishnan, S Sudhindran- Journal of Clinical and Experimental hepatology1(2): 152.September 2011.
  • Cost and efficacy of immunosuppression using generic products following living donor liver transplantation in India. Sudhindran, Aboobacker S, Menon RN, Unnikrishnan G, Sudheer OV, Dhar P. Indian J Gastroenterol. 2012 Jan 31
  • Challenges and Outcome of Left-lobe Liver Transplants in Adult Living Donor Liver Transplants-S Sudhindran, Ramachandran N Menon, Dinesh Balakrishnan-Journal of Clinical and Experimental Hepatology, Volume 2, Issue 2, June 2012.
  • Acute liver failure due to zinc phosphide containing rodenticide poisoning: Clinicalfeatures and prognostic indicators of need for liver transplantation – VivekSaraf, Supriya Pande, UnnikrishnanGopalakrishnan, Dinesh Balakrishnan, Ramachandran N Menon, O V Sudheer, Puneet Dhar, S Sudhindran-Indian Journal of Gastroenterology,August 2015.
  • Perioperative management of a patient with severe Hemophilia B for abdominal pseudotumor surgery - Lakshmi Kumar, Rekha Varghese,Ramachandran Narayana Menon, NeerajSiddharthan- Indian Journal of Anesthesia | Vol. 59 | Issue 7 | Jul 2015.
  • Simultaneous Pancreas-Kidney transplant for Type 1 diabetes with renal failure: Anesthetic Considerations- Lakshmi Kumar, Sudhindran Surendran, Rajesh Kesavan, Ramachandran Narayanamenon- Indian Journal of Anesthesia | Vol. 60 | Issue 2 | Feb 2016.
  • Hepato biliary scintigraphy for detecting biliary leak in living donor liver transplant recipients – Should we do it? April 2016 – HPB.
  • Perioperative Prostaglandin E1 Infusion in Living Donor Liver transplantationDouble-Blind, Placebo-Controlled Randomized Trial, Viju Kumar Bharathan, Biju Chandran, Unnikrishnan Gopalakrishnan, Christi Titus Varghese, Ramachandran N. Menon, Dinesh Balakrishnan, O. V. Sudheer, Puneet Dhar, and Sudhindran Surendran- Liver Transplantation 22 1067-1074 2016.
  • Biliary complications following donor hepatectomy in live donor liver transplantations(LDLT)April 2016,HPB.
  • Live donor liver transplantation for Anti tubercular drug induced Acute Liver Failure.Akshay P. Bavikatt,S. Sudhindran,Puneet Dhar,O. V. Sudheer,G. Unnikrishnan,Dinesh Balakrishnan,Ramachandran N. Menon-  Indian J Gastroenterol -2017.
  • Is portal venous pressure or systemic gradient really a harbinger of poor outcomes after living donor liver transplantation?Feb 2017 Journal of Clinical and Experimental Hepatology.
  • Intraductaltransanastomotic stenting in duct to duct biliary reconstruction after living donor liver transplantation: A randomized trial September 2017, American College of Surgeons.
  • A new score to predict recipient mortality from pre-operative donor and recipient characteristics in living donor liver transplantation (DORMAT score)August 2017,Annals of transplantation.
  • Living donor liver transplantation using small for size grafts: Does size really matter? June 2017 Journal of Clinical and Experimental Hepatology.
  • Living donor liver transplantation using small for size grafts: September2017,Journal of Gastroenterology and Hepatology.
  • Cystic artery Pseudoaneurysm following acute necrotizing pancreatitis – Case report April 2017 BMJ Case reports.
  • Pattern and risk factors for recurrence of hepatocellular carcinoma following liver transplantation September 2017 – Tropical Gastroenterology.
  • Potentially life threatening Near miss events in living donor hepatectomy – Single centre experience from Southern India, April 2017 Gastroenterology.
  • Biliary complications among live donors following live donor liver transplantations-Shaji Mathew,ManikandanK,Santhoshkumar K Y,Binoj ST,BalakrishnanD,Gopalakrishnan U,Narayanamenon R,Dhar P,Sudheer OV,AneeshS,Sudhindran S- The Surgeon : Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland, 20 Oct 2017, 16(4):214-219.
  • Long-term experience(18years)with pelvic exenteration and double barrel wet colostomy for locally advanced carcinoma rectum November 2018- Journal of Gastroenterology and Hepatology.
  • Randomized study on steroid free immunosuppression with Basiliximab induction vs Standard triple drug immunosuppression in adult live donor liver transplantation(LDLT),September 2018 – HPB.
  • Randomized trial on Extended Versus Modified Right Lobe Grafts in Living Donor Liver Transplantation – Varghese CT, Bharathan VK, Gopalakrishnan U, Balakrishnan D, Menon RN, Vayoth Sudheer O1, Dhar P, Surendran S. Liver Transpl. 2018.
  • Pre Pro trial Randomized double blind placebo controlled trial to analyse the effect of symbiotic on infectious complications following living donor liver transplantation, September 2018- HPB.
  • Surgery for cystic tumours of pancreas: Report of a high volume multicentre Indian experience over a decade, September 2019 – Surgery.
  • Randomized trial of PTFE graft Vs. Native recipient portal vein graft for MHV reconstruction in living donor liver transplantation - May 2019,Journal of clinical and experimental Hepatology.
  • Robotic donor hepatectomy:Guts to change the winning team,May 2019- Journal of clinical and experimental Hepatology.
  • Antegrade Hepatic artery and Portal Vein Perfusion Versus Portal vein perfusion alone in living donor liver transplantation: A randomized trial March 2019,Liver transplantation.
  • Liver Transplant In Acute Liver Failure – Looking Back Over 10 Years Shweta Mallick, Krishnanunni Nair, Manoj Thillai, Manikandan K, Pulkit Sethi, Madhu Srinivasan D, S.M. Johns, Binoj ST, Zubair Umer Mohammed, Ramachandran NM, Dinesh B, G. Unnikrishnan, Puneet Dhar, O.V. Sudheer, S. Sudhindran- Journal of Clinical and Experimental Hepatology 2019.
  • Robotic donor hepatectomy:Is it just flaunting the scar? Binoj ST, Johns S. Mathew, Krishnanunni Nair, Shweta Mallick, Christi Titus V, Biju Chandran, Ramachandran Menon, Unnikrishnan G, Dinesh Balakrishnan, Sudheer OV, Sudhindran S- Gastroenterology 158(6):S-1263-May 2020
  • A Pure Robotic Donor Right Hepatectomy–Surgical technique,Jayapala Reddy Velagala, BINOJ S T, Shweta Mallick, Krishnanunni Nair, Johns S. Mathew, Christi Titus V, Biju Chandran, Ramachandran Menon, Unnikrishnan G, Dinesh Balakrishnan, Sudheer OV, Sudhindran S-- Gastroenterology 158(6):S-1515-May 2020
  • Small bowel transplant -Observations from initial setback- July 2020 Indian journal of Surgery.38
  • Randomized trial of steroid free immunosuppression with Basiliximabinductionin adult live donor liver transplantation(LDLT)- Manikandan Kathiravel,Shweta Mallick,Manoj Thillai,John SMathew,Binoj,Ramachandran N Menon, Dinesh Balakrishnan, UnnikrishnanGopalakrishnan,OV Sudheer,SudhindranSurendran.HPB October 2020.
  • Middle hepatic vein reconstruction in adult live donor liver transplantation : a randomized clinical trial- SreenivasMadhu,Johns Shaji Mathew,Schwetamallick, Krishnanunni Nair, Christi Titus,Biju Chndran,Binoj ST, Ramachandran, Dinesh Balakrishnan,Unnikrishnan,OVSudheer
  • Middle hepatic vein reconstruction in adult live donor liver transplantation : a randomized clinical trial- SreenivasMadhu,Johns Shaji Mathew,Schwetamallick, Krishnanunni Nair, Christi Titus,Biju Chndran,Binoj ST, Ramachandran, OV Sudheer,SudhindranSurendran.
  • Successful isolated small bowel transplantation in short bowel syndrome - anesthetic considerations.Lakshmi kumar,George J malayil,Roopa M,Ramachandran N Menon - letter to editor -Indian Journal of anaesthasia.March 2021.
  • Technique of robotic right donor hepatectomy - Biju Chandran,Christi Titus,Dinesh B,SchwetaMallick,Krishnanunni Nair,Ramachandran Narayanamenon,Sudheer OV,S Sudhindran - Journal of minimal Access surgery- May 2021.

Text book Chapter 

  • Principles of Surgery of the Bowel. Sudhindran, G Unnikrishnan, Ramachandran N Menon
  • Text chapter-Hepatic vascular Isolation -Ramachandran, Sudhindran –GI Annals 2012.
  • Anaesthetic Management for Patients Undergoing Pancreas Transplantation Lakshmi Kumar and Ramachandran N. Menon HPB anaesthesia- 2021.


Research Experience

  • Ref: Protocol No. EFC6520: A Multinational, Multicenter, Randomized, Double Blinded Study comparing the Efficacy and Safety of AVE2026 with enoxaparin for the Prevention of Venous Thromboembolism in Patients Undergoing Abdominal Surgery.
  • Protocol No: MNTX 3301: A Phase 3, Double Blind, Randomized Parallel group, Placebo Controlled Study of Intravenous (IV) Methynltrexone Bromide (MNTX) in the treatment of Post Operative Ileus (POI).
  • Ref: Protocol Number : SRPL/CLI/07-08/001: A randomized, double blind, multicentric, placebo controlled, single dose, phase – II study assessing the safety and efficacy of intramuscular EX vivo cultured adult allogenic mesenchymal stem cells in patients with critical limb ischemia (CLI).
  • A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Dose-Ranging Study to Assess the Efficacy and Safety of TZP -101 when Administered as a 30Minute i.v. Infusion for Postoperative Ileus to Subjects Undergoing Major Open Abdominal Surgery.
  • Ref: NXL104/2002–A Prospective, Multicenter, Double-blind, Randomized, Study to estimate the safety, tolerability and efficacy of NXL104/ceftazidime plus metronidazole vs. meropenem in the treatment of complicated intra-abdominal infections in hospitalized adults.
  • Ref: Protocol No. WSA-CS-008: A phase III, Double Blind, Randomized Studyto Evaluate the Safety and Efficacy of BAL8557 Versus A Caspofungin Followed by Voriconazole Regimen in the Treatment of Candidemia and Other Invasive Candida Infections.

Membership in Scientific Bodies

  • Life member - Indian Medical Association (IMA)
  • Life member - Association of Surgeons of India (ASI)
  • Life Member - Indian Association of Surgical Gastroenterology(IASG)
  • Life Member - Association Of Minimal Access surgeons of India
  • Vascular Society of Kerala (VASK)
  • Life member of Liver Transplant Society of India (LTSI)

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