Dr. Somchai Amornyotin is a Professor at the Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University. From 2005 until 2009 he was the chief of the Anesthesiology Division of Siriraj GI Endoscopy Center, Faculty of Medicine Siriraj Hospital, Mahidol University. His first scientific paper was published in Thailand in 1999. He has practiced anesthesia for gastrointestinal endoscopy since 2002. He was on the committee of Siriraj Gastrointestinal Endoscopy Center, Faculty of Medicine Siriraj Hospital in 2005. More than 80 of his articles have been published in Thai and international medical journals. Dr. Amornyotin is a member and committee of the Royal College of Anesthesiologists of Thailand, the Gastroenterological Association of Thailand, and many scientific societies. He is the reviewer and editor of many international journals.

• Anesthesia for Gastrointestinal Endoscopy
• Total Intravenous Anesthesia (TIVA)
• Target Controlled Infusion (TCI)
• Sedation for Pediatric Patients
• Anesthesia Outside the Operating Room
• Ambulatory Anesthesia
• Airway Management
• Acute Postoperative Pain Management

• Amornyotin S, Visalyaputra S, Thepchatri C, Sakulpachareon N. The comparison between intrathecal hyperbaric and isobaric bupivacaine in combined spinal/epidural technique (CSF) for cesarean section. Thai Journal of Anesthesiology 1999; 25: 121-6. (In Thai)
• Amornyotin S. Trachlight (Stylet and tracheal lightwand): an equipment for endotracheal intubation. Thai Journal of Anesthesiology 2000; 26 (3): 192-7. (In Thai)
• Amornyotin S, Piromrat I. Malignant hyperthermia in children: a case report. Thai Journal of Anesthesiology 2000; 26 (4): 249-53. (In Thai)
• Amornyotin S, Soontranan P. Endotracheal intubation by stylet and tracheal lightwand in cervical spondylosis patient. Thai Journal of Anesthesiology 2001; 27 (4): 233-5.
• Amornyotin S, Sanansilp V, Amorntien V, Tirawat P. Effectiveness of lightwand intubation by 1st year anesthesia residents. Journal of Medical Association of Thailand 2002; 85 (Suppl 3): S963-8. [PMID: 12452236]
• Amornyotin S, Santawat U, Rushatamukayanant P, Ninsuwankosit P, Pipatnarapong H. Can lidocaine reduce suxamethonium induced postoperative myalgia? Journal of Medical Association of Thailand 2002; 85 (Suppl 3): S 969-74. [PMID: 12452237]
• Amornyotin S, Raksamani A. Low plasma cholinesterase (pseudocholinesterase) and prolonged apnea. Thai Journal of Anesthesiology 2002; 28 (2): 83-7. (In Thai)
• Amornyotin S. Hi-Lo EvacTM Endotracheal tube. Thai Journal of Anesthesiology 2002; 28 (3): 147-9. (In Thai)
• Amornyotin S. Rocuronium (Org 9426). Thai Journal of Anesthesiology 2002; 28 (4): 243-52. (In Thai)
• Amornyotin S. Laryngeal tube. Thai Journal of Anesthesiology 2002; 28 (1): 14-8. (In Thai)
• Amornyotin S, Santawat U, Rachatamukaynant P, Nilsuwankosit P, Pipatnaraphong H, Parakkamodom S, Permpholprasert L. Can lidocaine reduce rocuronium induced postoperative myalgia? Thai Journal of Anesthesiology 2003; 29 (1): 1-5.
• Amornyotin S, Suraseranivongse S, Muangman S, Sattawathamrong Y, Tensit K, Prakotsue K, Chalayonnavin V. Comparison of dose requirement of diluted and undiluted propofol for patients undergoing ERCP. Thai Journal of Anesthesiology 2003; 29 (1): 6-12. (In Thai)
• Amornyotin S, Na-pomphet S, Wongwathanyoo T, Chalayonnavin V. Anesthesia for endoscopic retrograde cholangiopancreatography (ERCP) from 1999-2003 in Siriraj Hospital: a retrospective study. Journal of Medical Association of Thailand 2004; 87 (12): 1491-5. [PMID: 15822546]
• Amornyotin S, Promthong P, Reunreung W. Anesthesia for nuclear medicine procedures in children from 2002-2004 in Siriraj Hospital: a retrospective study. Thai Journal of Anesthesiology 2006; 32 (3): 182-90.
• Amornyotin S, Lertakayamanee N, Wongyingsinn M, Pimukmanuskit P, Chalayonnavin V. The effectiveness of intravenous sedation in diagnostic upper gastrointestinal endoscopy. Journal of Medical Association of Thailand 2007; 90 (2): 301-6. [PMID: 17375635]
• Amornyotin S, Parichatikanond P, Reunreung W. Anesthesia for embolization from 2003-2004 in Siriraj Hospital: a retrospective study. Siriraj Medical Journal 2007; 59 (4): 161-3.
• Amornyotin S, Chalayonnavin V, Kongphlay S. Recovery pattern and home-readiness after gastrointestinal endoscopy. Journal of Medical Association of Thailand 2007; 90 (11): 2352-8. [PMID: 18181319]
• Amornyotin S, Pranootnarabhal T, Chalayonnavin W, Kongphlay S. Anesthesia for gastrointestinal endoscopy from 2005-2006 in Siriraj Hospital: a prospective study. Thai Journal of Anesthesiology 2007; 33 (2): 93-101.
• Amornyotin S, Prakanrattana U, Tritrakarn T, Kachintorn U, Muangman S, Udomporn Y, Chalayonnavin W, Kongphlay S. Patient characteristics and behaviors of smokers and nonsmokers who undergoing gastrointestinal endoscopy in Siriraj Hospital. Siriraj Medical Bulletin 2008; 1 (2): 71-80. (In Thai)
• Amornyotin S, Prakanrattana U, Chalayonnavin W, Kongphlay S, Chantakard S. Anesthesia for pediatric gastrointestinal endoscopy in a tertiary care teaching hospital. Thai Journal of Anesthesiology 2008; 34 (4): 265-72.
• Amornyotin S, Prakanrattana U, Chalayonnavin W, Kongphlay S, Kongmueng B. Anesthesia for percutaneous endoscopic gastrostomy in Siriraj Hospital. Thai Journal of Anesthesiology 2009; 35 (1): 39-47.
• Amornyotin S, Aanpreung P, Prakanrattana U, Chalayonnavin W, Chatchawankitkul S, Srikureja W. Experience of intravenous sedation for pediatric gastrointestinal endoscopy in a large tertiary referral center in a developing country. Pediatric Anesthesia 2009; 19 (8): 784-91. [PMID: 19624366 DOI: 10.1111/j.1460-9592.2009.03063.x]
• Amornyotin S, Prakanrattana U, Chalayonnavin W, Kongphlay S. Anesthesia for gastrointestinal endoscopy in extremely elderly patients. Thai Journal of Anesthesiology 2009; 35 (2): 91-9.
• Amornyotin S, Srikureja W, Chalayonnavin W, Kongphlay S, Chatchawankitkul S. Topical viscous lidocaine solution versus lidocaine spray for pharyngeal anesthesia in unsedated esophagogastroduodenoscopy. Endoscopy 2009; 41 (7): 581-6. [PMID: 19588284 DOI: 10.1055/s-0029-1214865]
• Amornyotin S, Prakanrattana U, Chalayonnavin W, Kongphlay S. Intravenous sedation for endoscopic ultrasonography in Siriraj Hospital. Thai Journal of Anesthesiology 2009; 35 (3): 181-90.
• Amornyotin S, Phasurin T, Wongnuch P. Pain score within twenty-four hours post-endoscopic retrograde cholangiopancreatography: a comparison between diagnostic and therapeutic procedures. Gastroenterology Insights 2009; 1 (e7): 20-3. [DOI: 10.4081/gi.2009.e7]
• Amornyotin S. Dexmedetomidine. Thai Journal of Anesthesiology 2009; 35 (4): 296-302.
• Amornyotin S, Chalayonnavin W, Kongphlay S. Assisted sedation for percutaneous endoscopic gastrostomy in sick patients in a developing country. Gastroenterology Insights 2010; 2 (e5): 17-20. [DOI: 10.4081/gi.2010.e5]
• Amornyotin S, Prakanrattana U, Vichitvejpaisal P, Vallisut T, Kunanont N, Permpholprasert L. Comparison of the clinical use of Macintosh and Miller laryngoscopes for orotracheal intubation by second-month nurse students in anesthesiology. Anesthesiology Research and Practice 2010; 2010, pii: 432846. [PMID: 20700430 DOI:10.1155/2010/432846]
• Amornyotin S, Prakanrattana U, Chalayonnavin W, Kongphlay S, Kachintorn U. Propofol based sedation does not increase rate of perforation during colonoscopic procedure. Gastroenterology Insights 2010; 2 (e4): 13-6. [DOI: 10.4081/gi.2010.e4]
• Amornyotin S, Chalayonnawin W, Kongphlay S. Propofol-based sedation does not increase rate of complication during percutaneous endosopic gastrostomy procedure. Gastroenterology Research and Practice 2011; Article number 134819. [PMID: 20811547 DOI: 10.1155/2011/134819]
• Amornyotin S, Aanpreung P. Clinical effectiveness of an anesthesiologist-administered intravenous sedation outside of the main operating room for pediatric upper gastrointestinal endoscopy in Thailand. International Journal of Pediatrics 2010; 2010: 748564. [PMID: 20811603 DOI: 10.1155/2010/748564]
• Amornyotin S, Chalayonnawin W, Kongphlay S. Deep sedation for endoscopic retrograde cholangiopancreatography: a comparison between clinical assessment and NarcotrendTM monitoring. Medical Devices (Auckl) 2011; 4: 43-9. [PMID: 22915929 DOI: 10.2147/MDER.S17236]
• Amornyotin S, Srikureja W, Chalayonnawin W, Kongphlay S. Dose requirement and complication of diluted and undiluted propofol for deep sedation for endoscopic retrograde cholangiopancreatography. Hepatobiliary Pancreatic Diseases International 2011; 10 (3): 313-8. [PMID: 21669577]
• Amornyotin S, Srikureja W, Pausawasdi N, Prakanrattana U, Kachintorn U. Intravenous sedation for gastrointestinal endoscopy in very elderly patients of Thailand. Asian Biomedicine 2011; 5 (4): 485-91. [DOI: 10.5372/1905-7415.0504.063]
• Amornyotin S, Kachintorn U, Chalayonnawin W, Kongphlay S. Propofol-based deep sedation for endoscopic retrograde cholangiopancreatography procedure in sick elderly patients in a developing country. Therapeutics and Clinical Risk Management 2011; 7: 251-5. [PMID: 21753887 DOI: 10.2147/TCRM.S21519]
• Amornyotin S. Sedation outside operating room. Medical Time 2011; 12 (286): S1-8. (In Thai)
• Amornyotin S, Kongphlay S. Esophagogastroduodenoscopy procedure in sick pediatric patients: a comparison between deep sedation and general anesthesia technique. Journal of Anesthesia and Clinical Research 2012; 3 (1): 1000185. [DOI: 10.4712/2155-6148.1000185]
• Amornyotin S. Pediatric sedation and analgesia in a developing country. Journal of Anesthesia and Clinical Research 2011; 2: S12: 001. [DOI: 10.4172/2155-6148.S12-001]
• Amornyotin S, Kachintorn U, Kongphlay S. Anesthetic management for small bowel enteroscopy in a World Gastroenterology Organizing Endoscopy Training Center. World Journal of Gastrointestinal Endoscopy 2012; 4 (5): 189-93. [PMID: 22624071 DOI: 10.4253/wjge.v4.i5.189]
• Amornyotin S. General patient preparation for GI endoscopy. Medical Time 2012; 13 (303): 35-7 (In Thai)
• Amornyotin S, Leelakusolvong S, Chalayonnawin W, Kongphlay S. Age-dependent safety analysis of propofol-based deep sedation for ERCP and EUS procedures at an Endoscopy Training Center in a developing country. Clinical and Experimental Gastroenterology 2012; 5: 123-8. [PMID: 22826640 DOI: 10.2147/CEG.S31275]
• Amornyotin S, Chalayonnawin W, Kongphlay S. A randomized controlled trial of preprocedure administration of parecoxib for therapeutic endoscopic retrograde cholangiopancreatography. Journal of Pain Research 2012; 5: 251-6. [PMID: 23049274 DOI: 10.2147/JPR.S33546]
• Amornyotin S. Endoscopists need to know for upper gastrointestinal endoscopy. Medical Time 2012; 13 (310): 28-9. (In Thai)
• Amornyotin S. Monitoring for depth of anesthesia: a review. Journal of Biomedical Graphics and Computing 2012; 2 (2): 119-27. [DOI: 10.5430/jbgc.v2n2p119]
• Amornyotin S. Propofol administration for gastrointestinal endoscopy. Medical Time 2012; 14 (314): 31-3. (In Thai)
• Amornyotin S, Prakanrattana U, Chalayonnawin W, Kongphlay S. Brief advice offered by anesthetic personnel to encourage smoking cessation in ambulatory gastrointestinal endoscopic patients in a developing country. International Journal of Life Science and Medical Research 2012; 2 (4): 37-42. [DOI: 10.5963/LSMR0204006]
• Amornyotin S. Sedation and monitoring for gastrointestinal endoscopy. World Journal of Gastrointestinal Endoscopy 2013; 5 (2): 47-55. [PMID: 23424050 DOI: 10.4253/wjge.v5.i2.47]
• Amornyotin S. Local anesthetics for gastrointestinal endoscopy. Medical Time 2013; 14 (318): 25-7. (In Thai)
• Amornyotin S. Sedation for colonoscopy in children. Journal of Gastroenterology and Hepatology Research 2013; 2 (6): 555-60. [DOI: 10.6051/j.issn.2224-3992.2013.02.106]
• Amornyotin S. Anesthesia outside the operating room. Medical Time 2013; 14 (320): 12-4. (In Thai)
• Amornyotin S. Anesthetic consideration for laparoscopic surgery. International Journal of Anesthesiology & Research 2013; 1: 102.
• Amornyotin S. Role of anesthesiologists in promoting smoking cessation. Medical Time 2013; 14 (328): 17-8. (In Thai)
• Amornyotin S. Use of dexmedetomidine in clinical practice. Medical Time 2013; 15 (332): 19-21. (In Thai)
• Amornyotin S. Monitoring equipment for gastrointestinal endoscopy. Medical Time 2013; 14 (): . (In Thai)
• Amornyotin S. Colonoscopy: anesthesia consideration. Medical Time 2013; 15 (335): 17-20. (In Thai)
• Amornyotin S. Sedation-related complications in gastrointestinal endoscopy. World Journal of Gastrointestinal Endoscopy 2013; 5 (11): 527-33. [PMID: 24255744, DOI: 10.4253/wjge.v5.i11.527]
• Amornyotin S, Songarj P, Kongphlay S. Deep sedation with propofol and pethidine versus moderate sedation with midazolam and fentanyl in colonoscopic procedure. Journal of Gastroenterology and Hepatology Research 2013; 2 (12): 885-90. [DOI: 10.6051/j.issn.2224-3992.2013.02.358]
• Amornyotin S, Kongphlay S. Anesthetic trainee-administered propofol deep sedation for small bowel enteroscopy procedure in elderly patients. Journal of Gastroenterology and Hepatology Research 2014; 3 (6): 1117-29. [DOI: 10.6051/j.issn.2224-3992.2014.04.398]
• Amornyotin S. Sedative and analgesic drugs for gastrointestinal endoscopic procedure. Journal of Gastroenterology and Hepatology Research 2014; 3 (7): 1133-44. [DOI: 10.6051/j.issn.2224-3992.2014.04.397]
• Amornyotin S. Ketofol: a combination of ketamine and propofol. Journal of Anesthesia & Critical Care: Open Access 2014; 1 (5): 00031. [DOI: 10.15406/jaccoa.2014.01.00031]
• Amornyotin S. Ketamine: pharmacology revisited. International Journal of Anesthesiology Research 2014; 2: 42-4. [DOI: 10.14205/2310-9394.2014.02.02.4]
• Amornyotin S, Kongphlay S. Anesthesia-related adverse event rate and alteration of blood pressure and heart rate during and immediately after unsedated esophagogastroduodenoscopy in elderly patients. Journal of Gastroenterology and Hepatology Research 2015; 4 (2): 1474-7. [DOI: 10.6051/j.issn.2224-3992.2015.04.503]
• Amornyotin S. Registered nurse-administered sedation for gastrointestinal endoscopic procedure. World Journal of Gastrointestinal Endoscopy 2015; 7 (8): 769-76. [PMID: 26191341 DOI: 10.4253/wjge.v7.i8.769]
• Amornyotin S, Saivaew K, Vichitmala K. Pain score within twenty-four hours post-endoscopic ultrasonography: a comparison between with or without fine needle aspiration procedure. Journal of Gastroenterology and Hepatology Research 2015; 4 (7): 1694-7. [DOI: 10.17554/j.issn.2224-3992.2015.04.555]
• Amornyotin S, Kongphlay S. Clinical efficacy of combination of propofol and ketamine (ketofol) for deep sedation in colonoscopic procedure. Journal of Gastroenterology and Hepatology Research 2015; 4 (7): 1689-93. [DOI: 10.17554/j.issn.2224-3992.2015.04.553]
• Amornyotin S, Kongphlay S. Complication rate of propofol-based deep sedation for colonoscopy in marked obesity patients. Journal of Gastroenterology and Hepatology Research 2015; 4 (8): 1734-8. [DOI: 10.17554/j.issn.2224-3992.2015. 04.559]
• Amornyotin S, Jirachaipitak S, Wangnatip S. Anesthetic management for radiofrequency ablation in patients with hepatocellular carcinoma in a developing country. Journal of Anesthesia & Critical Care: Open Access 2015; 3 (1): 00086. [DOI: 10.15406/jaccoa.2015.03.00086]
• Amornyotin S, Kongphlay S. Unsedated esophagogastroduodenoscopy in cirrhotic patients: an impact of topical pharyngeal anesthesia. Journal of Anesthesia & Critical Care: Open Access 2015; 3 (4): 00106 [DOI: 10.15406/jaccoa.2015. 03.00106]
• Amornyotin S, Chalayonnawin W, Kongphlay S. Topical pharyngeal anesthesia for unsedated esophagogastroduodenoscopy procedure in sick patients. Journal of Anesthesia & Critical Care: Open Access 2016; 4 (2): 00134 [DOI: 10.15406/jaccoa.2016.04.00134]
• Wangnamthip S, Chinachoti T, Amornyotin S, Wongtangman K, Sukantarat N, Noitasaeng P. A randomized placebo-controlled trial of oral ramosetron for prevention of post operative nausea and vomiting after intrathecal morphine in patients undergoing gynecological surgery. Journal of Medical Association of Thailand 2016; 99 (5): 455-61. [PMID: 27501597]
• Amornyotin S. Dexmedetomidine in gastrointestinal endoscopic procedures. World Journal of Anesthesiology 2016; 5 (1): 1-14. [DOI: 10.5313/wja.v5.i1.1]
• Amornyotin S, Jirachaipitak S, Wangnamtip S. Anesthetic management for esophageal stent placement in an endoscopy unit outside operating room. Journal of Medical Association of Thailand 2016; 99 (5): 525-30. [PMID: 27501607]
• Parakkamodom S, Chainchop P, Napachoti T, Apidechakul P, Puangchan S, Noitasaeng P, Amornyotin S*. Quality of anesthesia care in a university hospital in Thailand. Journal of Medical Association of Thailand 2016; 99 (5): 622-8. [PMID: 27501621]
• Tiviraj S, Yokubol B, Amornyotin S*. Development of an assessment test for an anesthetic machine. Journal of Medical Association of Thailand 2016; 99 (5): 629-35. [PMID: 27501622]
• Amornyotin S. Intravenous sedation techniques for gastrointestinal endoscopy. Journal of Gastroenterology and Hepatology Research 2016; 5 (3): 2050-7. Available from: URL: http: //www.ghrnet.org/index.php/joghr/article/view/1432 [DOI: 10.17554/j.issn.2224-3992.2016.05.583]
• Amornyotin S, Chalayonnawin W, Kongphlay S. Adverse event rate of unsedated esophagogastroduodenoscopy: a comparison between healthy adults and cirrhotic patients. Gastroenterol Hepatol Open Access 2016; 5 (3): 00142. [DOI: 10.15406/ghoa.2016.05.00142]
• Amornyotin S. Anesthesia innovation: Mini-review of an intravenous sedation for gastrointestinal endoscopy. Advanced Research in Gastroenterology & Hepatology 2017; 4 (3): 555636. [DOI: 10.19080/ARGH.2017.04.555636]
• Amornyotin S, Kongphlay S. Propofol-based deep sedation for percutaneous radiofrequency ablation in sick elderly patients with hepatocellular carcinoma in a developing country. Journal of Anesthesia & Critical Care: Open Access 2017; 8 (3): 00303. [DOI: 10.15406/jaccoa.2017.08.00303]
• Amornyotin S. Role of an anesthesiologist in smoking patients undergoing endoscopic procedures. Journal of Addiction Medicine and Therapeutic Science 2017; 3 (3): 030-031. [DOI: 10.17352/2455-3484.000023]
• Amornyotin S, Kongphlay S. Anesthesia for esophageal dilation procedure in a World Gastroenterology Organizing Endoscopy Training Center. Journal of Medical Association of Thailand 2017; 100 (Suppl 7): S188-94. [http://www.jmatonline.com/index.php/jmat/article/view/8376]
• Amornyotin S, Jirachaipitak S. Anesthesiologist role in achalasia patients: review article. Thai Journal of Anesthesiology 2017; 43 (2): 177-85. [http://anesthai.org/public/rcat/Documents/journal/1508126721-_17(177-186)10.pdf]
• Lomarattana N, Silapadech T, Muangman S, Boayam W, Kriprasit K, Boonnark P, Amornyotin S*. Recovery time and complications of propofol-based deep sedation for endoscopic ultrasonography: a comparison between with and without topical pharyngeal anesthesia. Journal of Medical Association of Thailand 2017; 100 (Suppl 7): S202-9. [http://www.jmatonline.com/index.php/jmat/article/view/8378]
• Muangman S, Amornyotin S, Mangmeesri P, Chumpathong S, Pausawasdi N, Chotiwaputta W, Limsrivilai J, Svastdi-xuto O, Jaiyen T, Luansritisakul C. Success rate of sedation in esophagogastroduodenoscopy using fentanyl and midazolam in combination with topical lidocaine. Journal of Medical Association of Thailand 2017; 100 (Suppl 7): S195-201. [http://www.jmatonline.com/index.php/jmat/article/view/8377]
• Amornyotin S. Anesthesia for elderly patients. Analgesia & Resuscitation: Current Research 2017; 6 (2): 1000149. [DOI: 10.4172/2324-903X.1000149]
• Yoosri S, Parakkamodom S, Amornyotin S*. Results of the workshop on prevention and control of infectious diseases in anesthesia practice in Siriraj Hospital. Thai Journal of Anesthesiology 2017; 43 (3): 241-9. [http://anesthai.org/public/rcat/Documents/journal/1516859790-18-0000PRINT-7.pdf]
• Amornyotin S. Monitoring equipment for gastrointestinal endoscopy. Thai Journal of Anesthesiology 2018; 44 (3): 143-8. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/147344]
• Ruangkitudom N, Thiensukon V, Bunnag P, Chaiwong R, Prachayakul V, Amornyotin S, Akaraviputh T. Outcomes of a structured program for bowel preparation in patients scheduled to undergo colonoscopy: a randomized controlled trial. THAI Journal of SURGERY 2018; 39 (1): 21-9. [https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/219933]
• Tiviraj S, Amornyotin S*. Teaching guideline for open airway and bag mask ventilation. Christian University of Thailand Journal 2018; 24 (4): 647-56. [https://he01.tci-thaijo.org/index.php/CUTJ/article/view/171302/123069]
• Amornyotin S, Sripunjan K. Propofol deep sedation with and without midazolam for percutaneous radiofrequency ablation in patients with hepatocellular carcinoma: a retrospective cohort study. Journal of Medical Association of Thailand 2018; 101 (Suppl 9): S 109-15. [http://www.jmatonline.com/index.php/jmat/article/ view/ 9687]
• Parakkamodom S, Vichitvejpaisal P, Noitasaeng P, Udompunturak S, Amornyotin S*. Develop a validated anesthesia quality assessment to evaluate patients postoperatively. Journal of Anesthesia & Critical Care: Open Access 2020; 12 (1): 52-7. [DOI: 10.15406/jaccoa.2020.12.00430]
• Amornyotin S. Use of a combination of ketamine and dexmedetomidine (Ketodex) in different clinical cases. Journal of Addiction Medicine and Therapeutic Science 2020: 6 (1): 041-4. [DOI: 10.17352/2455-3484.000036]
• Amornyotin S. Common patient positioning in gastrointestinal endoscopy. Journal of Clinical Anesthesia and Intensive Care 2020; 1 (1): 11-2. [DOI: 10.46439/anesthesia.1.003]
• Amornyotin S, Chalayonnawin W, Kongphlay S. Oxygen supplementation for propofol-based deep sedation in colonoscopic procedure: a comparison between nasal cannula and face mask. Journal of Clinical Research in Anesthesiology 2020; 3 (2): 1-5. [DOI: 10.33309/2639-8915.030203]
• Amornyotin S. Cannabis and endocannabinoid system. Journal of Addiction Medicine and Therapeutic Science 2021; 7 (1): 004-006. [DOI: 10.17352/2455-3484.000047]
• Sripunjan K, Sombood P, Vichitvejpaisal P, Amornyotin S*. Ventilatory effect of midazolam in propofol deep sedation for hepatic tumor patients undergoing percutaneous radiofrequency ablation procedure. Gastroenterology Insights 2021; 12: 89-99. [DOI: 10.3390/gastroent12010009]
• Amornyotin S. Non-operating room anesthesia (NORA). Thai Journal of Anesthesiology 2022; 48 (2): 83-5. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/257002]
• Amornyotin S. Cannabis: what anesthesiologists need to know? Thai Journal of Anesthesiology 2022; 48 (3): 177-9. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/258554]
• Amornyotin S. Use of intravenous ketamine in gastrointestinal endoscopy. Journal of Clinical Research in Anesthesiology 2022; 4 (1): 01-02. [DOI: 10.33309/2639-8915.040102]
• Amornyotin S. Kratom and anesthesia. Thai Journal of Anesthesiology 2022; 48 (4): 255-7. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/259533]
• Somnuke P, Kitisin N, Chumklud P, Kunavuttitagool P, Deepinta P, Wadrod A, Prachayakul W, Amornyotin S, Raykateeraroj N. Hard-candy consumption does not have an effect on volume and pH of gastric content in patients undergoing elective gastrointestinal endoscopic procedures: a randomized controlled trial. Therapeutics and Clinical Risk Management 2022; 18: 1049-57. [PMID: 36467617, PMCID: PMC9716931, DOI: 10.2147/TCRM.S377421]
• Amornyotin S. Ketamine: an old drug commonly used in clinical practice. Thai Journal of Anesthesiology 2023; 49 (1): 1-3. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/260769]
• Amornyotin S. Ketofol: what is it? Thai Journal of Anesthesiology 2023; 49 (2): 69-71. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/261525]
• Hengphaisan S, Mettapol C, Junyatham S, Amornyotin S. Airway management in giant goiter patient with severe upper airway obstruction: a case report. Thai Journal of Anesthesiology 2023; 49 (2): 119-22. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/261531]
• Amornyotin S. Intravenous sedation: advantages and disadvantages. Thai Journal of Anesthesiology 2023; 49 (3): 131-4. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/262760]
• Omid Azimaraghi, Mohammad Bilal, Somchai Amornyotin, Mustafa Arain, Matthias Behrends, Tyler M. Berzin, James L. Buxbaum, Curtis Choice, Philipp Fassbender, Mandeep S. Sawhney, Eswar Sundar, Karuna Wongtangman, Kate Leslie, Matthias Eikermann. Consensus guidelines for the perioperative management of patients undergoing endoscopic retrograde cholangiopancreatography. British Journal of Anaesthesia 2023; 130 (6): 763-72. [PMID: 37062671, DOI: 10.1016/j.bja.2023.03.012]
• Amornyotin S. Artificial intelligence and anesthesia. Thai Journal of Anesthesiology 2023; 49 (4): 219-22. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/263955]
• Petsakul S, Tangwiwat S, Amornyotin S*, Zinboonyahgoon N, Nimmaanrat S, Kaikosol W, Boonsombat T, Pannangpetch P, Seangrung R, Suansanae T, Srisuma S, Pattaravit N, Leelanukrom R. Anesthesia for cannabis and cannabis products users. Thai Journal of Anesthesiology 2023; 49 (5): 363-74. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/264825]
• Amornyotin S. Drug interactions and adverse effects of cannabis. Thai Journal of Anesthesiology 2023; 49 (5): 301-4. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/264816]
• Amornyotin S. Remimazolam: what is it? Thai Journal of Anesthesiology 2023; 49 (6): 375-80. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/266154]
• Sombood P, Yankan K, Amornyotin S*. Midazolam in ambulatory surgery: a mini-review. Thai Journal of Anesthesiology 2023; 49 (6): 423-6. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/266160]
• Amornyotin S. Anesthesia and respiratory diseases. Thai Journal of Anesthesiology 2024; 50 (1): 1-4. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/267140]
• Prajongmool C, Hortrakul P, Sacanil K, Potjana P, Amornyotin S*. Role of anesthetic personnel in preparation and management for stroke patient during COVID-19 pandemic. Thai Journal of Anesthesiology 2024; 50 (1): 65-72. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/267138]
• Amornyotin S. Safe sedation for GI endoscopy in geriatrics. Thai Journal of Anesthesiology 2024; 50 (2): 73-8. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/267984]
• Amornyotin S. Endoscopic sedation could be performed safely in children. Thai Journal of Anesthesiology 2024; 50 (3): 149-52. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/269135]
• Amornyotin S. Anesthesia and drug induced sleep endoscopy (DISE). Thai Journal of Anesthesiology 2024; 50 (4): 217-20. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/269956]
• Kasikan K, Parakkamodom S, Tuyatiko N, Amornyotin S*. Briefing culture for patient safety. Thai Journal of Anesthesiology 2024; 50 (4): 279-86. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/269963]
• Amornyotin S. When to call anesthesiologists for sedation. Thai Journal of Anesthesiology 2024; 50 (5): 301-4. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/270840]
• Amornyotin S. High flow nasal oxygen and gastrointestinal endoscopy. Thai Journal of Anesthesiology 2024; 50 (6): 381-4. [https://he02.tci-thaijo.org/index.php/anesthai/article/view/271944]

• Amornyotin S. Anesthesia for strangulated hernia. In: Prakanrattana U and Suwanjinda V, editors. Anesthesia for surgical emergency. 1st edition, Bangkok: Krungthepvejasarn, 2001: 35-9. (In Thai)
• Amornyotin S. Local anesthetics. In: Prakanrattana U and Suwannajinda V, editors. Text book of Anesthesiology. 3rd edition, Bangkok: Krungth Journal of Emergency Medicineepvejasarn, 2005: 66-77. (In Thai)
• Amornyotin S. Regional anesthesia. In: Prakanrattana U and Suwannajinda V, editors. Text book of Anesthesiology. 3rd edition, Bangkok: Krungthepvejasarn, 2005: 182-94. (In Thai)
• Amornyotin S, Yokubon B. Current controversies in adult outpatient anesthesia. In: Achara Sumboonnanon, Jumpol Wilasrassamee, Manee Rattanachaiyanon, Chittima Manomai, Nithipat Chierkul, Phannawadee Puthawattana, et al, editors. 60 years’king throne celebration, Siriraj-Ramathibordee Mahidol University, 18-21 April, 2006; Sirikit Convention Center, Bangkok: Beyorn Enterprise Co. Ltd.; 2006: 609-10. (In Thai)
• Amornyotin S. Anesthesia for Endoscopic Retrograde Cholangiopancreatography. In: Vimollack Sanansilp, Achara Sumboonnanon, Wanicha Cheunkongkaew, Phankae Mahaisavariya, Wanee Wisutsereevong, Manee Rattanachaiyanon, et al, editors. Siriraj Medical Conference 2007 (46th), 5-9 March, 2007; Navy Convention Center, Bangkok: P. A. Living Co. Ltd.; 2007: 449-53. (In Thai)
• Amornyotin S. Ambulatory anesthesia. In: Wichai Itthichaiyakulthon, Rouenrueng Leelanukrom, Kumthorn Tantiwitthayathan, Saowapak Jumpathong, editors. Update in anesthesiology, Bangkok: S. Asiapress (1989) Co. Ltd; 2003: 117-23. (In Thai)
• Amornyotin S. Anesthesia for gastrointestinal endoscopy. In: Phongprasobchai S, Akkaraviputh T, Sriprayoon T, editors. The master of gastroenterology, Bangkok: Krungthepvejasarn; 2009: 1-19. (In Thai)
• Amornyotin S. Anesthesia for gastrointestinal bleeding patients. In: Phongprasobchai S, Akaraviputh T, Kachintorn U, editors. Gastrointestinal bleeding, Bangkok: Krungthepvejasarn; 2010: 4-15. (In Thai)
• Amornyotin S. Intravenous sedation for pediatric gastrointestinal endoscopy in a developing country. In: Oliviu Pascu, editor. Gastrointestinal Endoscopy, Croatia: InTech; 2011: 53-60. ISBN: 978-953-307-385-9, InTech, DOI: 10.5772/21894. Available from: http://www.intechopen.com/books/gastrointestinal-endoscopy/ intravenous-sedation-for-pediatric-gastrointestinal-endoscopy-in-a-developing-country
• Amornyotin S. Anesthesia for colonoscopy. In: Phongprasobchai S, Akaraviputh T, Kachintorn U, editors. Colonoscopy, Bangkok: Krungthepvejasarn; 2011: 22-37. (In Thai)
• Amornyotin S. Anesthesia for gastrointestinal endoscopy. In: Temeeyasen P, editor. Management in gastrointestinal endoscopy unit, Bangkok: Cyberprint; 2012: 24-55. (In Thai)
• Amornyotin S. Total intravenous anesthesia. In: Rodanant O, Lekpresert V, Duangrat T, editor. Update in anesthesiology, Bangkok: Tanapress; 2012: 94-108. (In Thai)
• Amornyotin S. Cardiorespiratory complications during moderate and deep sedation for gastrointestinal endoscopic procedures. In: Somchai Amornyotin, editor. Endoscopy of GI Tract, Croatia: InTech; 2013: 13-22. ISBN: 978-953-51-1034-7, InTech, Available from: http://www.intechopen.com/books/endoscopy-of-gi-tract/cardiorespiratory-complications-during-moderate-and-deep-sedation-for-gastrointestinal-endoscopic-procedure
• Amornyotin S. Anesthetic management for laparoscopic cholecystectomy. In: Somchai Amornyotin, editor. Endoscopy, Croatia: InTech; 2013: 39-48. ISBN: 978-953-51-1071-2, InTech, Available from: http://www.intechopen.com/books/ endoscopy/anesthetic-management-for-laparoscopic-cholecystectomy
• Amornyotin S. Innovations and anesthesia for laparoscopy and endoscopy. In: Akaraviputh T, Ratanachu-Ek T, editors. Surgical Endoscopy: The innovation in laparoscopic surgery and GI endoscopy, Bangkok: Krungthepvejasarn, 2013: 1-20. (In Thai) ISBN: 978-616-279-287-8
• Amornyotin S. Anesthesia for GI endoscopy. In: Prakanrattana U, Sanansilp V, Suksompong S and Toomtong P, editors. Anesthesiology, Bangkok: Krungthepvejasarn, 2013: 727-34 (In Thai)
• Amornyotin S. Sedation-related complications in gastrointestinal endoscopy. In: Li Ma, Mei-Sze Chua and Samuel So, editors. World Clinical Gastroenterology, 1st edition, CA, United States: Baishideng Publishing Group Inc, 2014: 1772-8 ISBN 978-0-9914430-0-0
• Amornyotin S. Sedation and monitoring for gastrointestinal endoscopy. In: Li Ma, Mei-Sze Chua and Samuel So, editors. World Clinical Gastroenterology, 1st edition, CA, United States: Baishideng Publishing Group Inc, 2014: 1751-9 ISBN 978-0-9914430-0-0
• Amornyotin S. Anesthesia innovations for endoscopy of gastrointestinal tract. In: Somchai Amornyotin (Ed.). Endoscopy-Innovative uses and emerging technologies, ISBN: 978-953-51-2172-5, Croatia, InTech. 2015: 39-61. Available from: http://www.intechopen.com/books/endoscopy-innovative-uses-and-emerging-technologies/anesthesia-innovations-for-endoscopy-of-gastrointestinal-tract
• Amornyotin S, Jirachaipitak S. Anesthetic management for achalasia. In: Phalanusittepa C, Akkaraviputh T, Leelakusolvongse S, editors. Achalasia, ISBN: 978-616-279-792-7, Bangkok: Krungthepvejasarn, 2016: 143-53. (In Thai)
• Amornyotin S. Anesthetic Consideration for geriatric patients. In: Somchai Amornyotin, editor. Update in geriatrics, Croatia: InTech; 2021: 39-48. ISBN: 978-1-83962-309-7, InTech, Available from: https://www.intechopen.com/books/update-in- geriatrics/anesthetic-consideration-for-geriatric-patients. [DOI:10.5772/intechopen.97003].

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