1. Rohrbach A,Jage J ,Olthoff D. Intraoperative clonidine modulates sympathetic tone in the early postoperative period after remifentanil A double blind,Placebo-controlled study .Acute pain1999;2 (3):129-136.
2. Robert K.stoelting, chapter: Acute post-operative pain management In: Basic of anesthesia 5th ed, stoelting &miller, Nathasha Andgelkovic, 2007:p:580-9.
3. Kelly DJ, Ahmad M, Brull sj.preemptive analgesia I: Physiological pathway and pharmacological modalities.Can J Anesth 2001,48,1000.
4. Saeed Sh, Sara E, Said S. Anesthesiology and pain medicine: 2012:1(3): 184-186.
5. Kehlet H, Dahl JB. Anaesthesia, surgery, and challenges in postoperative recovery. Lancet. 2003; 362: 1921-8.
6. Meghana S, Manpreet S, Dheeraj K. Pain management in orthopaedic surgeries: Pb journal of Orthopaedics Vol- 2012; 53-55
7. Miller R, Eriksson L, Fleisher L, Wiener-Kronish J, Cohen N, Young W. Miller’s Anesthesia. 8th Ed, Elsevier Health Sciences. p 920
8. Paul F. The role of intravenous Acetaminophen in multimodal pain protocols for perioperative orthopedic patients: A review article. Chapel Hill: Feb 2013: 1: 15-17.
9. Ofelia L, Elvir-Lazo and Paul F, white. The role of multimodal analgesia in pain management after ambulatory surgery: Current opinion in anesthesiology 2010: 23: 697-703.
10. Fukuda k. Intravenous opioid anesthetics. In: Miller RD, Fleisher LA, editors. Anesthesia. 6 Th ed. Philadelphia: Churchill Livingstone; 2010: 385.
11. Kumpulainen E, Kokki H, Laisalmi M, Heikkinen M, Savolainen J, Rautio J, et al. How readily does ketorolac penetrate cerebrospinal fluid in children? J Clin Pharmacol 2008; 48(4): 495-501.
12. Shakeri MR, Derakhshan P, Sheykholvaezin F, Koleini Z. Patient-controlled intravenous analgesia with Morphine-Apotel and Ketorolac in patient’s candidate for plating surgery: A comparison between analgesic effects. J Anesth Pain 2016; 6(4):1-8
13. Imani F, Salmanian R, Feiz H. Comparison of co-administration of clonidine and pethidine with bupivacaine during spinal anesthesia. Zahedan J Res Med Sci. 2011;13(2):e94064.
14. Saryazdi H, Aghadavoudi O, Fakhari S. Comparison of the Preemptive Effect of Intravenous

Paracetamol and Ketorolac on Prevention of Postoperative Pain in Patients Undergoing Abdominal

Surgery. J Isfahan Med Sch 2017; 35(442): 978-85

15. 15. Pascual PR, Bertolo J. Pediatric acute postoperative pain management service: 6 years’ experience. Rev ESP Anestesiol Reanim 2006; 53: 346-53.
16. 16. Aguilera C. Analgesics in the postoperative period of abdominal interventions. Med Clin North Am 2007; 108: 136- 40.

17.Vallano A, Aguilera C, Arnau JM, Banos JR. Management of postoperative pain in abdominal surgery in spain. A multicentre drug utilization study. Br J Clin pharmacol 2006; 47: 667-73.

18. 18. Akhavan Akbari G, Entezari Asl M, Ghazi A, MirzaRahimy T, mirzai M. comparative study of the infusion of ketorolac and acetaminophen in reducing postoperative pain and opioid consumption in patients undergoing orthopedic surgery of the lower limbs. JAP 2018; 9 (1) :31-43
19. Pourmehdi Z, Janatmakan F, Nassajian N, Gousheh SMR. Comparison of intravenous morphine and pethidine suppositories on pain after laparoscopic cholecystectomy. Iranian Journal Of Anaesthesiology and Critical Care. 2016; 36(87): 49-55.
20. 20. Shaker H, Mosadegh R, Jalali F, Zavareh M. Comparison of intravenous morphine and ketorolac in renal colic patients admitted to Firoozgar and Hazrat Rasoul e Akram hospitals. JAP 2017, 7(2): 40-48
21. 21. Holdgate A, Pollack T. Systematic review of the relative efficacy of non-steroidal anti-inflammatory drugs and opioids in the treatment of acute renal colic. BMJ 2014 12; 238(7453):1401.
22. 22. O'Hara DA, Fragen RJ, Kinzer M, Pemberton D. Ketorolac tromethamine as compared with morphine sulfate for treatment of postoperative pain. Clin Pharmacol Ther. 1987; 41(5):556-61. PMID: 3568540
23. 23. Watcha MF, Ramirez-Ruiz M, White PF, Jones MB, Lagueruela RG, Terkonda RP, et al. Perioperative effects of oral ketorolac and acetaminophen in children undergoing bilateral myringotomy. Can J Anaesth. 1992 Sep; 39(7):649-54.
24. 24. Lauretti GR, Righeti CC, Mattos AL. Intrathecal ketorolac enhances intrathecal morphine analgesia following total knee arthroplasty. J Anaesthesiol Clin Pharmacol. 2013 Oct; 29(4):503-8.
25. 25. De Oliveira Jr GS, Agarwal D, Benzon HT. Perioperative single dose ketorolac to prevent postoperative pain: a meta-analysis of randomized trials Anesth Analg. 2012 Feb 1; 114(2):424-33.
26. Saryazdi H, Aghadavoudi O, Fakhari S. Comparison of the Preemptive Effect of Intravenous
27. Haddadian A, Pourmoteabed S, Nasiri Gigloo K, Ghorbani Amjad G, Bahrami A. Comparison of Ketorolac and Ibuprofen IV Infusion Effect on Radius Distal Fracture Pain Control . Avicenna J Clin Med 2018; 25 (2) :79-84
28. 28. Griffen XL, Smith N, Parson N, Costa ML. Ultrasound and shockwave therapy for acute fractures in adults. Cochrane Database Syst Rev. 2012; 2:CD008579.
29. 29. Gunter J B, Varughese A M, Harrington J F, Wittkugel E P, Patankar S S, Recovery and complications after tonsillectomy in children: a comparison of ketorolac and morphine. Anesth Analg. 1995;81(6):1136-41.
30. 30. Vlajkovic G, Sindjelic R, and Stefanovic I. Ketorolac as a pre-emptive analgesic in retinal detachment surgery: a prospective, randomized clinical trial. Int J Clin Pharmacol Ther. 2007 May; 45(5):259-63.
31. Forouzesh Fard, M., Moradan, S., Ghorbani, R., Hosseinzadeh, B., Shahhoseini, H. Comparison of Spinal Anesthesia with Pethidine and Epidural Anesthesia with Bupivacaine in Pain Relief of Labor: A Clinical Trial. The Iranian Journal of Obstetrics, Gynecology and Infertility, 2014; 17(97): 1-8.
32. 32. Shankariah M, Mishra M, Kamath RA. Tramadol versus ketorolac in the treatment of postoperative pain following maxillofacial surgery. J Maxillofac Oral Surg. 2012 Sep 1; 11(3):264-70.
33. 33. Ghuman J, Vadera R. Ketorolac and morphine for analgesia in acute renal colic: Is this combination more effective than monotherapy? CJEM 2008; 10 (1): 66-68.
34. 34. Wood V, Christenson J, Innes G, Lesperance M, Mcknight D. The NARC (No steroidal Anti-inflammatory in Renal Colic) Trial. Single-dose intravenous ketorolac versus titrated intravenous meperidine in acute renal colic: a randomized clinical trial. CJEM 2000; 2 (2): 83-89.
35. 35. Varrassi G, Marinangeli F, Agro F, Aloe L, De Cillis P, De Nicola A, Giunta F, Ischia S, Ballabio M, Stefanini S. A double-blinded evaluation of propacetamol versus ketorolac in combination with patient-controlled analgesia morphine: analgesic efficacy and tolerability after gynecologic surgery. Anesth Analg. 1999 Mar 1; 88(3):611-6.
36. Fekrat F, Pakniyat S. Comparison of the preemptive effect of Dexmedetomidine and ketorolac on post-operative pain for appendectomy. Iranian Journal Of Anaesthesiology and Critical Care. 2019; 3(42): 45-56.
37. Zangoue M, Bijari B, Abasspour Z, Tolyat M. Comparison of the Effect of Ketorolac and Pethidine on Pain Control after Cesarean Section Surgery. North Khorasan University of Medical Sciences 2019; 11 (2) :73-77
38. 38. Mc Guire et al. Comparison of Ketorolac and Opioid Analgesics in Postoperative ACL Reconstruction Outpatient Pain Control. Arthroscopy, Vot. 9, No. 6, 1993.
39. 39. Dula DJ, Anderson R, Wood GC. A prospective study comparing i.m. ketorolac with i.m. meperidine in the treatment of acute biliary colic. The Journal of emergency medicine. 2001; 20(2):121-4. Epub 2001/02/24.
40. 40. Cassinelli EH, Dean CL, Garcia RM, Furey CG, Bohlman HH. Ketorolac use for postoperative pain management following lumbar decompression surgery: a prospective, randomized, double-blinded, placebo-controlled trial. Spine. 2008; 33(12):1313-17.
41. 41. Unlugenc H, Vardar MA, Tetiker S. A Comparative study of the analgesic effect of patient - controlled morphine, pethidine and tramadol for postoperative pain management after abdominal hysterectomy. Anesth Analg 2008; 106: 309-312.
42. 42. Oconnor A, Schug SA, Cardwell H. A comparison of the efficacy and safety of morphine and pethidine as analgesia for suspected renal colic in the emergency setting. Emerg Med 2000; 17: 261-264.
43. 43. Mixter CG, Meeker LD, Gavin TJ. Preemptive pain control in patients having laparoscopic hernia repair: a comparison of ketorolac and ibuprofen. Arch Surg. 1998;133(4):432-7. PMID: 9565125
44. 44. Franceschi F, Buccelletti F, Marsiliani D, Carroccia A, Giupponi B, De Marco G, et al. Acetaminophen plus codeine compared to ketorolac in polytrauma patients. Eur Rev Med Pharmacol Sci. 2010;14(7):629-34. PMID: 20707253
45. 45. Neighbor ML, Puntillo KA. Intramuscular ketorolac vs oral ibuprofen in emergency department patients with acute pain. Acad Emerg Med. 1998;5(2):118-22. PMID: 9492131
46. 46. Safdar B, Degutis LC, Landry K, Vedere SR, Moscovitz HC, et al. Intravenous morphine plus Ketorolac is superior to either drug alone for treatment of acute renal colic. Ann Emerg Med. 2006;48(2):173-81.
47. 47. Kao CW, Wu SC, Lin KC, Chen CL, Huang CJ, Cheng KW, Jawan B, Wang CH. Pain management of living liver donors with morphine with or without ketorolac. Transplant Proc. 2012 Mar 31; 44(2):360- 2.