Dr. Ari Meguerditchian

Academic title(s): 

Associate Professor, Departments of Surgery and Oncology


Dr. Ari Meguerditchian
Contact Information
514-934-1934, ext 44337
Email address: 
ari.meguerditchian [at] mcgill.ca
Royal Victoria Hospital (RVH)
Hospital title: 
Surgical Oncologist
McGill University Program Lead, Cancer Quality & Innovation
Rossy Cancer Network Member, Clinical and Health Informatics Research Group, McGill University
General surgery and oncology
Selected publications: 

1: Syrowatka A, Hanley JA, Weir DL, Dixon WG, Meguerditchian AN, Tamblyn R.
Ability to Predict New-Onset Psychological Distress Using Routinely Collected
Health Data: A Population-Based Cohort Study of Women Diagnosed With Breast
Cancer. J Natl Compr Canc Netw. 2018 Sep;16(9):1065-1073. doi:
10.6004/jnccn.2018.7038. PubMed PMID: 30181418.

2: Henault D, Westley T, Dumitra S, Chang SL, Kremer R, Tamblyn R, Mayo N,
Meguerditchian AN. Divergence from osteoporosis screening guidelines in older
breast cancer patients treated with anti-estrogen therapy: A population-based
cohort study. Bone. 2018 Nov;116:94-102. doi: 10.1016/j.bone.2018.06.005. Epub
2018 Jul 5. PubMed PMID: 29981903.

3: Westley T, Syrowatka A, Henault D, Rho YS, Khazoom F, Chang SL, Tamblyn R,
Mayo N, Meguerditchian AN. Patterns and predictors of emergency department visits
among older patients after breast cancer surgery: A population-based cohort
study. J Geriatr Oncol. 2018 May;9(3):204-213. doi: 10.1016/j.jgo.2017.10.003.
Epub 2017 Nov 28. PubMed PMID: 29195906.

4: Tamblyn R, Winslade N, Lee TC, Motulsky A, Meguerditchian A, Bustillo M,
Elsayed S, Buckeridge DL, Couture I, Qian CJ, Moraga T, Huang A. Improving
patient safety and efficiency of medication reconciliation through the
development and adoption of a computer-assisted tool with automated electronic
integration of population-based community drug data: the RightRx project. J Am
Med Inform Assoc. 2018 May 1;25(5):482-495. doi: 10.1093/jamia/ocx107. PubMed
PMID: 29040609; PubMed Central PMCID: PMC6018649.

5: Syrowatka A, Motulsky A, Kurteva S, Hanley JA, Dixon WG, Meguerditchian AN,
Tamblyn R. Predictors of distress in female breast cancer survivors: a systematic
review. Breast Cancer Res Treat. 2017 Sep;165(2):229-245. doi:
10.1007/s10549-017-4290-9. Epub 2017 May 28. Review. PubMed PMID: 28553684;
PubMed Central PMCID: PMC5543195.

6: Meguerditchian A, Tamblyn R, Meterissian S, Law S, Prchal J, Winslade N, Stern
D. Adjuvant Endocrine Therapy in Breast Cancer: A Novel e-Health Approach in
Optimizing Treatment for Seniors (OPTIMUM): A Two-Group Controlled Comparison
Pilot Study. JMIR Res Protoc. 2016 Nov 7;5(4):e199. PubMed PMID: 27821385; PubMed
Central PMCID: PMC5118585.

7: Syrowatka A, Chang SL, Tamblyn R, Mayo NE, Meguerditchian AN. Psychotropic and
Opioid Medication Use in Older Patients With Breast Cancer Across the Care
Trajectory: A Population-Based Cohort Study. J Natl Compr Canc Netw. 2016
Nov;14(11):1412-1419. PubMed PMID: 27799512.

8: Syrowatka A, Krömker D, Meguerditchian AN, Tamblyn R. Features of
Computer-Based Decision Aids: Systematic Review, Thematic Synthesis, and
Meta-Analyses. J Med Internet Res. 2016 Jan 26;18(1):e20. doi: 10.2196/jmir.4982.
Review. PubMed PMID: 26813512; PubMed Central PMCID: PMC4748141.

9: Ramjaun A, Sudarshan M, Patakfalvi L, Tamblyn R, Meguerditchian AN. Educating
medical trainees on medication reconciliation: a systematic review. BMC Med Educ.
2015 Mar 7;15:33. doi: 10.1186/s12909-015-0306-5. Review. PubMed PMID: 25879196;
PubMed Central PMCID: PMC4373246.

10: Kremer R, Gagnon B, Meguerditchian AN, Nadeau L, Mayo N. Effect of oral
bisphosphonates for osteoporosis on development of skeletal metastases in women
with breast cancer: results from a pharmaco-epidemiological study. J Natl Cancer
Inst. 2014 Oct 2;106(11). pii: dju264. doi: 10.1093/jnci/dju264. Print 2014 Nov.
PubMed PMID: 25278509.

11: Trabulsi N, Riedel K, Winslade N, Gregoire JP, Meterissian S, Abrahamovicz M,
Tamblyn R, Mayo N, Meguerditchian A. Adherence to anti-estrogen therapy in
seniors with breast cancer: how well are we doing? Breast J. 2014
Nov-Dec;20(6):632-8. doi: 10.1111/tbj.12328. Epub 2014 Sep 23. PubMed PMID:

12: AlSharif S, Meguerditchian A, Omeroglu A, Lamarre P, Altinel G, Mesurolle B.
Pilomatricoma of the male breast: sonographic mammographic MRI features with
pathologic correlation. Clin Imaging. 2015 Mar-Apr;39(2):308-10. doi:
10.1016/j.clinimag.2014.07.005. Epub 2014 Jul 22. PubMed PMID: 25123419.

13: Meguerditchian AN, Krotneva S, Reidel K, Huang A, Tamblyn R. Medication
reconciliation at admission and discharge: a time and motion study. BMC Health
Serv Res. 2013 Nov 21;13:485. doi: 10.1186/1472-6963-13-485. PubMed PMID:
24261516; PubMed Central PMCID: PMC3842651.

14: Ramjaun A, Nassif MO, Krotneva S, Huang AR, Meguerditchian AN. Improved
targeting of cancer care for older patients: a systematic review of the utility
of comprehensive geriatric assessment. J Geriatr Oncol. 2013 Jul;4(3):271-81.
doi: 10.1016/j.jgo.2013.04.002. Epub 2013 May 7. Review. PubMed PMID: 24070464.

15: Meguerditchian AN, Bullard Dunn K. Biomarkers and targeted therapeutics in
colorectal cancer. Surg Oncol Clin N Am. 2013 Oct;22(4):841-55. doi:
10.1016/j.soc.2013.07.002. Review. PubMed PMID: 24012402.

16: Krotneva S, Reidel K, Nassif M, Trabulsi N, Mayo N, Tamblyn R, Meguerditchian
AN. Rates and predictors of consideration for adjuvant radiotherapy among
high-risk breast cancer patients: a cohort study. Breast Cancer Res Treat. 2013
Jul;140(2):397-405. doi: 10.1007/s10549-013-2636-5. Epub 2013 Jul 24. PubMed
PMID: 23881523; PubMed Central PMCID: PMC3732766.

17: Cools-Lartigue J, Sinclair A, Trabulsi N, Meguerditchian A, Mesurolle B,
Fuhrer R, Meterissian S. Preoperative axillary ultrasound and fine-needle
aspiration biopsy in the diagnosis of axillary metastases in patients with breast
cancer: predictors of accuracy and future implications. Ann Surg Oncol. 2013
Mar;20(3):819-27. doi: 10.1245/s10434-012-2609-7. Epub 2012 Sep 13. PubMed PMID:

18: Tamblyn R, Huang AR, Meguerditchian AN, Winslade NE, Rochefort C, Forster A,
Eguale T, Buckeridge D, Jacques A, Naicker K, Reidel KE. Using novel Canadian
resources to improve medication reconciliation at discharge: study protocol for a
randomized controlled trial. Trials. 2012 Aug 27;13:150. doi:
10.1186/1745-6215-13-150. PubMed PMID: 22920446; PubMed Central PMCID:

19: Schricker T, Wykes L, Meterissian S, Hatzakorzian R, Eberhart L, Carvalho G,
Meguerditchian A, Nitschmann E, Lattermann R. The anabolic effect of
perioperative nutrition depends on the patient's catabolic state before surgery.
Ann Surg. 2013 Jan;257(1):155-9. doi: 10.1097/SLA.0b013e31825ffc1f. PubMed PMID:

20: Jamal MH, Rayment JH, Meguerditchian A, Doi SA, Meterissian S. Impact of the
sentinel node frozen section result on the probability of additional nodal
metastases as predicted by the MSKCC nomogram in breast cancer. Jpn J Clin Oncol.
2011 Mar;41(3):314-9. doi: 10.1093/jjco/hyq225. Epub 2010 Dec 10. PubMed PMID:

21: Ranganath S, Meguerditchian A, Meterissian S. Amyloidosis of the colon:
pitfalls in surgical management. Am Surg. 2010 Jun;76(6):653-4. PubMed PMID:

22: Najarian DJ, Morrison C, Sait SN, Meguerditchian AN, Kane J 3rd, Cheney R,
Zeitouni NC. Recurrent giant cell fibroblastoma treated with Mohs micrographic
surgery. Dermatol Surg. 2010 Mar;36(3):417-21. doi:
10.1111/j.1524-4725.2009.01459.x. Epub 2010 Jan 19. PubMed PMID: 20100251.

Areas of interest: 

Research Interests:

Cancer care trajectory

Compliance to best practice guidelines

Cancer treatment adherence and challenges

Post-operative outcomes

Surgical adverse events and health services use

HIT and medication reconciliation

Health professional trainee education and assessment

Clinical Interests: 

surgical oncology; breast cancer

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