Mariappan R, Ashokkumar H, Kuppuswamy B. Comparing the effects of oral clonidine premedication with intraoperative dexmedetomidine infusion on anesthetic requirement and recovery from anesthesia in patients undergoing major spine surgery. J Neurosurg Anesthesiol. 2014 Jul;26(3):192-7. doi: 10.1097/ANA.0b013e3182a2166f. PMID: 23887684.

Ekta Rai, Rama Mani M, Rebecca Jacob. TRUVIEW EVO2 LARYNGOSCOPE : A REVIEW J AnaesthClinPharmacol 2009; 25(2): 199-202

Ramya I, Mathews KP, Pichamuthu K, Keshava SN, Balamugesh T, Ramamani M, Surekha V, Mammen T. Endotracheal tuberculous stenosis: ventilation rescue and bronchography guided stenting. Indian J Chest Dis Allied Sci. 2010 Jan-Mar;52(1):55-8. PMID: 20364617.

Mathew RR, Raju K, Nair BR, Mariappan R. An observational case-control study comparing the recovery profile in patients receiving additional dose of anticonvulsant vs. regular dose during supratentorial craniotomy. Indian J Anaesth. 2020 Mar;64(3):222-229. doi: 10.4103/ija.IJA_625_19. Epub 2020 Mar 11. PMID: 32346170; PMCID: PMC7179789.

Mariappan R, Philip A, Gandham EJ, Raju K. Simultaneous Surgical Decompression of Bilateral Subdural Hematoma and an Administration of Epidural Blood Patch for Spontaneous Intracranial Hypotension. J Neurosurg Anesthesiol. 2018 Oct;30(4):376-379. doi: 10.1097/ANA.0000000000000440. PMID: 28538330.

Prabhu K; Ramamani, Nair S, Chacko AG. Acute submandibular sialadenitis as a cause of unilateral neck swelling after posterior fossa surgery in sitting position. Neurol India. 2010 Nov-Dec;58(6):963-4. doi: 10.4103/0028-3886.73772. PMID: 21150076.

Mariappan R, Ashokkumar H, Kuppuswamy B. Comparing the effects of oral clonidine premedication with intraoperative dexmedetomidine infusion on anesthetic requirement and recovery from anesthesia in patients undergoing major spine surgery. J Neurosurg Anesthesiol. 2014 Jul;26(3):192-7. doi: 10.1097/ANA.0b013e3182a2166f. PMID: 23887684.

Ekta Rai, Rama Mani M, Rebecca Jacob. TRUVIEW EVO2 LARYNGOSCOPE : A REVIEW J AnaesthClinPharmacol 2009; 25(2): 199-202

Ramya I, Mathews KP, Pichamuthu K, Keshava SN, Balamugesh T, Ramamani M, Surekha V, Mammen T. Endotracheal tuberculous stenosis: ventilation rescue and bronchography guided stenting. Indian J Chest Dis Allied Sci. 2010 Jan-Mar;52(1):55-8. PMID: 20364617.

Mathew RR, Raju K, Nair BR, Mariappan R. An observational case-control study comparing the recovery profile in patients receiving additional dose of anticonvulsant vs. regular dose during supratentorial craniotomy. Indian J Anaesth. 2020 Mar;64(3):222-229. doi: 10.4103/ija.IJA_625_19. Epub 2020 Mar 11. PMID: 32346170; PMCID: PMC7179789.

Mariappan R, Philip A, Gandham EJ, Raju K. Simultaneous Surgical Decompression of Bilateral Subdural Hematoma and an Administration of Epidural Blood Patch for Spontaneous Intracranial Hypotension. J Neurosurg Anesthesiol. 2018 Oct;30(4):376-379. doi: 10.1097/ANA.0000000000000440. PMID: 28538330.

Prabhu K; Ramamani, Nair S, Chacko AG. Acute submandibular sialadenitis as a cause of unilateral neck swelling after posterior fossa surgery in sitting position. Neurol India. 2010 Nov-Dec;58(6):963-4. doi: 10.4103/0028-3886.73772. PMID: 21150076.

Thomas AS, Moorthy RK, Raju K, Lakshmanan J, Joy M, Mariappan R. Measurement of non-invasive blood pressure in lateral decubitus position under general anaesthesia - Which arm gives more accurate BP in relation to invasive BP - dependent or non-dependent arm? Indian J Anaesth. 2020 Jul;64(7):631-636. doi: 10.4103/ija.IJA_125_20. Epub 2020 Jul 1. PMID: 32792741; PMCID: PMC7413357.

Yoganathan S, Mariappan R, Sudhakar SV, Mani SE, Mathew V, Thomas M, Aboobacker FN. An Unusual Cause of Chronic Headache in an Adolescent Boy: A Case Report . Neuropediatrics. 2019 Dec;50(6):395-399. doi: 10.1055/s-0039-1694974. Epub 2019 Sep 17. PMID: 31529425.

Thakkar K, Mariappan R, Nair BR. Detection and management of intraoperative seizure with bispectral index monitoring in a paralyzed patient. Neurol India. 2017;65(Supplement):S100-S101. doi: 10.4103/neuroindia.NI_1099_15. PMID: 28281505.

Mariappan R, Prabhu K, Thampi SM, Nandhakumar A. Anaesthetic management of an unrecognized cerebral arteriovenous malformation bleed in a 45-day old baby. Indian J Anaesth. 2013 May;57(3):302-4. doi: 10.4103/0019-5049.115571. PMID: 23983295; PMCID: PMC3748691.

Singh, G., Mariappan, R. and Gautham, A. K. Buttressing the Pediatric Endotracheal Tube in Neonates: A Simple but Useful Technique Journal of Neurosurgical Anesthesiology; 2018, 30 (1): 83-84 Link

Singh, G., Mariappan, R. and Gautham, A. K. Buttressing the Pediatric Endotracheal Tube in Neonates: A Simple but Useful Technique Journal of Neurosurgical Anesthesiology; 2018, 30 (1): 83-84 Link

Theodare B, Nissy VV, Sahajanandan R, Mariappan R. Anesthetic challenges of a patient with the communicating bulla coming for nonthoracic surgery. Ann Card Anaesth. 2018 Apr-Jun;21(2):200-202. doi: 10.4103/aca.ACA_150_17. PMID: 29652286; PMCID: PMC5914225.

Renthlei L, Mariappan R, Raju K, Joseph J. Challenges of anaesthetising a child with Bow Hunter's syndrome and dilated cardiomyopathy for occipitocervical fusion. BMJ Case Rep. 2023 May 2;16(5):e253834. doi: 10.1136/bcr-2022-253834. PMID: 37130633; PMCID: PMC10163423.

Bandameedi RK, Thakkar K, Mariappan R. An enigmatic complication after an uncomplicated insertion of a right subclavian central venous catheter. Indian J Anaesth. 2022 Feb;66(2):155-156. doi: 10.4103/ija.ija_428_21. Epub 2022 Feb 24. PMID: 35359470; PMCID: PMC8963238.

Mariappan R, Harshit CR, Prasanna RG. Novel Method of Identifying Intraoperative Cuff Leak and its Treatment While Monitoring Cuff Pressure. J Neurosurg Anesthesiol. 2015 Oct;27(4):349-250. doi: 10.1097/ANA.0000000000000151. PMID: 25514495.

Nair BR, Ramamani M, Singh G, Babu KS, Rajshekhar V. Feasibility and diagnostic accuracy of intra-operative monitoring of motor evoked potentials in children <2 years of age undergoing tethered cord surgery: results in 100 children. Childs Nerv Syst. 2021 Jul;37(7):2289-2298. doi: 10.1007/s00381-021-05128-5. Epub 2021 Mar 24. PMID: 33763733.

Takri T, Mathew RR, Sivadasan A, Raju K, Karuppusami R, Mariappan R. The Utility of COMPASS-31 Questionnaire to Predict Autonomic Dysfunction in Patients With Cervical/Upper Thoracic Compressive Myelopathy. J Neurosurg Anesthesiol. 2021 Dec 7. doi: 10.1097/ANA.0000000000000824. Epub ahead of print. PMID: 34873138.

Mariappan R, Kumar S, Raju K, Daniel D, Nair SC, Subramani S. Comparing two techniques of performing an epidural catheter-assisted epidural blood patch using a 20 ml syringe versus a 5 ml syringe and its effect on clotting time, the strength of clot retraction and haemolysis – A prospective in vitro study (EC-EBP study). Indian Journal of Anaesthesia 2023;67(6):544-7. Link

Pillai R, Nair BR, Prabhakar PK, Singh G, Lionel KR, Moorthy RK, Joy M, Mariappan R. Ultrasound-Guided Transmuscular Quadratus Lumborum Block for Anterior Iliac Crest Bone Graft Promotes Early Ambulation in Patients Undergoing Cervical Corpectomy and Fusion. Indian Journal of Pain2020;34(3):175-82. Link

Thakkar K., Mariappan R, Prabhu K, Yadav B, Singh G. Comparison of Monitored Anesthesia Care with Propofol Versus Dexmedetomidine for Awake Craniotomy: A Retrospective study. Journal of Neuroanaesthesiology and Critical Care; 2022, doi:10.1055/s-0042-1748195.

Mariappan R, Singh G, Koshy MS. The Effect of Increased Intracranial Pressure on Pulmonary Compliance in a Neonate. J Neurosurg Anesthesiol. 2017 Jan;29(1):66-67. doi: 10.1097/ANA.0000000000000261. PMID: 26649769.

Sethuraman M, Bidkar PU, Mariappan R, Deopujari RC, Vanamoorthy P, Massand M. Recent advancements in the practice of neuroanaesthesia and neurocritical care: An update. Indian J Anaesth. 2023 Jan;67(1):85-90. doi: 10.4103/ija.ija_949_22. Epub 2023 Jan 21. PMID: 36970469; PMCID: PMC10034945.

George LR, Mariappan R. Capnothorax induced subclavian artery compression. Ann Card Anaesth. 2015 Oct-Dec;18(4):573-4. doi: 10.4103/0971-9784.166468. PMID: 26440245; PMCID: PMC4881685.

Prabhakar P, Mariappan R, Moorthy RK, Nair BR, Karuppusami R, Lionel KR. Adding Ketamine to Epidural Morphine Does Not Prolong Postoperative Analgesia After Lumbar Laminectomy or Discectomy. J Neurosurg Anesthesiol. 2023 Mar 29. doi: 10.1097/ANA.0000000000000914. Epub ahead of print. PMID: 37000813.

Mariappan R, Cherian VT, Joy M, Selvaraj K G. Effect of low dose ketamine on perioperative analgesia in patients undergoing open abdominal hysterectomy - A double-blind, randomized, placebo-controlled trial. Indian Anaesth Forum 2021;22:67-72 Available from: http://www.theiaforum.org/text.asp?2021/22/1/67/309839 Link

Mariappan, Ramamani,Krothapalli, Srinivasa B,Nair, Bijesh R.,Alexander, Benjamin F Can the Processed EEG Be Utilized as a Cerebral Ischemia Monitor during the Temporary Clip Application in Anterior Circulation Aneurysm Surgery? Journal of Neuroanaesthesiology and Critical Care

Bandameedi RK, Thakkar K, Mariappan R An enigmatic complication after an uncomplicated insertion of a right subclavian central venous catheter. Indian J Anaesth. 2022 Feb;66(2):155-156. doi: 10.4103/ija.ija_428_21. Epub 2022 Feb 24. PMID: 35359470; PMCID: PMC8963238.

Lionel KR, Moorthy RK, Singh G, Mariappan R. Anaesthetic management of craniosynostosis repair - A retrospective study. Indian J Anaesth. 2020 May;64(5):422-425. doi: 10.4103/ija.IJA_823_19. Epub 2020 May 1. PMID: 32724252; PMCID: PMC7286400.

Misra S, Parida S, Sahajanandan R, Behera BK, Senthilnathan M, Mariappan R, Chandy TT; ACE investigators. The effect of continuing versus withholding angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers on mortality and major adverse cardiovascular events in hypertensive patients undergoing elective non-cardiac surgery: study protocol for a multi-centric open-label randomised controlled trial. Trials. 2022 Aug 17;23(1):670. doi: 10.1186/s13063-022-06616-y. PMID: 35978368; PMCID: PMC9386985.

Bharadwaj S, Venkatraghavan L, Mariappan R, Ebinu J, Meng Y, Khan O, Tung T, Reyhani S, Bernstein M, Zadeh G. Serum lactate as a potential biomarker of non-glial brain tumors. J Clin Neurosci. 2015 Oct;22(10):1625-7. doi: 10.1016/j.jocn.2015.05.009. Epub 2015 Jun 19. PMID: 26100160.

Johnson JPJ, Arumugam R, Karuppusami R, Mariappan R. Intraoperative administration of systemic/epidural/intrathecal morphine on the quality of recovery following substitutional urethroplasty with buccal mucosal graft: A randomized control trial. J Anaesthesiol Clin Pharmacol. 2022 Oct-Dec;38(4):537-543. doi: 10.4103/joacp.JOACP_589_20. Epub 2022 Nov 29. PMID: 36778804; PMCID: PMC9912865.

Mariappan R, Venkatraghavan L, Vertanian A, Agnihotri S, Cynthia S, Reyhani S, Tung T, Khan OH, Zadeh G. Serum lactate as a potential biomarker of malignancy in primary adult brain tumours. J Clin Neurosci. 2015 Jan;22(1):144-8. doi: 10.1016/j.jocn.2014.06.005. Epub 2014 Aug 27. PMID: 25172017.

Mariappan R.;Suniara, Ishaana,Joseph, Baylis V Krothapalli, Srinivasa Upper Lip Swelling-An Uncommon and Avoidable Complication Following Cerebellopontine Angle Tumor Excision Requiring Transcranial Facial Motor-Evoked Potential Monitoring Journal of Neuroanaesthesiology and Critical Care Link

Mariappan R.;Suniara, Ishaana,Joseph, Baylis V Krothapalli, Srinivasa Upper Lip Swelling-An Uncommon and Avoidable Complication Following Cerebellopontine Angle Tumor Excision Requiring Transcranial Facial Motor-Evoked Potential Monitoring Journal of Neuroanaesthesiology and Critical Care Link

Mariappan R,Yalamanchili, Sruthib;Prabhu, Krishnac ;Poldoss, Sharona The Effect of Dorsal Midbrain Compression by the Posterior third Ventricular Cyst on Frontal EEG Under Propofol Anesthesia Journal of Neuroanaesthesiology and Critical CareOpen AccessVolume 9, Issue 1, Pages 56 - 571 March 2022 Link

Korula PJ, Mariappan R, James JP, Kumar P, Awareness during anaesthesia for surgery requiring evoked potential monitoring: A pilot study. J Neuroanaesthesiol Crit Care. 2017;4:36-41. Link

Mariappan R, Prabhu K. Acute coronary spasm during posteriorfossa surgery and its successful management: A variable presentation of trigemino cardiac reflex. J Neuroanaesth Crit Care2016 2018/05/05;03(02):157-8. Link

Korula G, Ramamani M, Raviraj R, Bhaskar S. Intubating laryngeal mask airway-Fastrach: an alternative to the stabilizing rod. Anesth Analg. 2007 Nov;105(5):1518. doi: 10.1213/01.ane.0000286133.11031.c6. PMID: 17960004.

Rahimi E, Mariappan R, Tharmaradinam S, Manninen P, Venkatraghavan L. Perioperative management and complications in patients with obstructive sleep apnea undergoing transsphenoidal surgery: Our institutional experience. J Anaesthesiol Clin Pharmacol. 2014 Jul;30(3):351-4. doi: 10.4103/0970-9185.137266. PMID: 25190942; PMCID: PMC4152674.

Lionel KR, Moorthy RK, Singh G, Mariappan R. Anaesthetic management of craniosynostosis repair - A retrospective study. ndian J Anaesth. 2020 May;64(5):422-425. doi: 10.4103/ija.IJA_823_19. Epub 2020 May 1. PMID: 32724252; PMCID: PMC7286400.

Prabhakar P, Mariappan R, Moorthy RK, Nair BR, Karuppusami R, Lionel KR. Adding Ketamine to Epidural Morphine Does Not Prolong Postoperative Analgesia After Lumbar Laminectomy or Discectomy. J Neurosurg Anesthesiol. 2023 Mar 29. doi: 10.1097/ANA.0000000000000914. Epub ahead of print. PMID: 37000813.

Mariappan R, Kumar S, Raju K, Daniel D, Nair SC, Subramani S. Comparing two techniques of performing an epidural catheter-assisted epidural blood patch using a 20 ml syringe versus a 5 ml syringe and its effect on clotting time, the strength of clot retraction and haemolysis - A prospective in vitro study (EC-EBP study). Indian J Anaesth. 2023 Jun;67(6):544-547. doi: 10.4103/ija.ija_849_22. Epub 2023 Jun 14. PMID: 37476432; PMCID: PMC10355359.

Cheriyan A, Mariappan R, Jeyaseelan L, Samuel P, Annadurai S, George AJP, Devasia A, Kumar S, John NT. Effect of intravenous mannitol on renal function in patients undergoing laparoscopic nephron-sparing surgery: a randomized, double-blinded trial. Int Urol Nephrol. 2025 Dec;57(12):4065-4072. doi: 10.1007/s11255-025-04609-9. Epub 2025 Jun 13. PMID: 40514624.

Karri S, Mariappan R, Jonathan GE, Mani T, Prabhakar P, Samuel J, Raju K. Continuous Low-dose Epidural Morphine and Ketamine Analgesia Improves Quality of Recovery after Major Lumbar Spine Surgery: A Randomised Controlled Trial. Turk J Anaesthesiol Reanim. 2025 Dec 22;53(6):341-349. doi: 10.4274/TJAR.2025.251950. Epub 2025 Aug 4. PMID: 40785254; PMCID: PMC12728441.

Thomas A, Ratnam S, Krishnan N, Nair S, Siva A, S H, Mariappan R, Nair S: Intraoperative Central Venous Catheter Usage in Elective Neurosurgery: A Quality Improvement Initiative. J Neuroanaesth Crit Care 2026. Link

https://doi.org/10.1055/s-0045-1811242