Anahi Perlas MD, FRCPC
Professor
Anesthesia
Anahi Perlas
Contact Info
T: (416) 603-5118
F: (416) 603-6494
Website
Location
University Health Network - Toronto Western Hospital
399 Bathurst Street, McL2-405
Toronto, ON, M5T 2S8
Accepting
contact faculty member for more information
Appointments
Director, Clinical Regional Anesthesia Program at Toronto Western Hospital – University Health Network
Chair, Departmental Appointments Committee, Department of Anesthesia, University of Toronto
Member of the Board of Directors, American Society of Regional Anesthesia and Pain Medicine
Clinical Interests
•Regional Anesthesia and Pain Medicine • Perioperative Ultrasound
Research Interests
•Regional Anesthesia and Pain Medicine •Perioperative Ultrasound •Patient safety and patient outcomes

Research/Teaching

Research Synopsis

Dr. Perlas’s research focuses on the development and validation of innovative perioperative applications of ultrasound to improve patient safety. She has done pioneer work on neuraxial and peripheral nerve sonoanatomy and has developed image-guided regional anesthesia techniques aimed at improving the safety and effectiveness of regional anesthesia. As the Director of the Clinical Regional Anesthesia Program at the Toronto Western Hospital, she has led a growing team of clinicians through a time of rapid expansion of clinical services of increasing complexity. She is currently an Associate Editor of the Journal Regional Anesthesiology and Pain Medicine, and a member of the Board of Directors of the American Society of Regional Anesthesia and Pain Medicine.

In addition, Dr. Perlas has developed a point-of-care ultrasound approach to assess gastric content and volume at the bedside.  She has studied the validity, reliability and diagnostic accuracy of this tool.   She is currently collaborating nationally and internationally to fully validate this tool in obese and non-obese adults, children and pregnant women. Her method and framework of gastric content evaluation is being rapidly adopted into anesthesia residency curricula locally and internationally. The ground work for this development has been supported by several peer-reviewed grants from the American Society of Anesthesiologists, the Anesthesia Patient Safety Foundation and the Canadian Society of Anesthesiologists. Dr. Perlas has published over 60 peer-reviewed original articles related to both research focus areas and lectures often at national and international events.

Courses

2004 – Present: Toronto Western Hospital Resident Teaching
quarterly research rounds and quarterly regional anesthesia seminars
2010-2015: Curriculum Coordinator
University of Toronto PGY2 Regional Anesthesia Curriculum Coordinator
2012: University of Toronto
PGY2 Lecture Series: Local Anesthetic Pharmacology

Recent Theses/Graduate Projects Supervised

The impact of anesthetic technique on mortality and major morbidity after hip fracture fixation. A Retrospective, Propensity-Score Matched-Pair Cohort Study.
Award: Best of the Meeting Abstract and Fellow Travel Award: World Congress on Regional Anesthesia and Pain Therapy. New York City, NY, USA (Sara Tierney)
Laith Malhas & Sara Tierney
2016-2018
Is low dose intrathecal morphine safe in patients with obstructive sleep apnea undergoing total joint replacement?
Project in progress
Anthony Short
2015-2017
Gastric Ultrasound
Publication: Anesthesiology 2014 July; 121 (1):46-51
Kariem El-Boghdadly
2015-2016
Adductor Canal Block: Analgesia and functional recovery after TKA, A double-blind, randomized Controlled Trial. (Primary Supervisor)
Publication: Regional Anesthesia and Pain Medicine 2018 Feb; 43(2):154-160
Meela Ghosh and Abhijit Biswas
2013-2018
Diagnostic Accuracy of Point-of-Care Gastric Ultrasound. A Bayesian Analysis
Peer-review grant: PSI 2016-2017; Publication: Anesth and Analg 2018 April 5.doi:10.1213/ANE.0000000000003372 [Epub ahead of print]
Angineh Garapetian (fellow) and Luis Chaparro (resident)
2013-2018
The nerves of the adductor canal and the innervation of the knee. An anatomic study
Publication: Regional Anesthesia and Pain Medicine 2016; May-June; 41 (3): 321-327
David Burkett-St. Laurent
2013-2015
Reliability of sonographic measurements of gastric antral cross-sectional area for gastric volume evaluation
Publication: Anesthesiology 2014 July; 121 (1): 46-51
Richelle Kruisselbrink
2013-2015
Early discharge and ambulatory continuous brachial plexus analgesia is a cost-effective alternative to standard inpatient care following complex arthroscopic elbow surgery
Publication: Anesthesiology 2015 December; 123 (6):1256-66; Award: Marion and Earl Orser Award, 2016, University of Toronto
Hillen Cruz-Eng
2013-2015
Ultrasound assessment of aspiration risk in non-fasted elective surgical patients
Publication: Canadian Journal of Anesthesia 2015 November; 62(11):1188-1195; Publication: Canadian Journal of Anesthesia 2015 November; 62(11):1188-1195
Husni Alakkad
2012-2014

Publications and Awards

View PubMed search of this faculty member's recent publications.

Recent Publications

  1. Perlas A, Kirkham K, Billing R, Tse C, Brull R, Gandhi R, Chan V.  The impact of analgesic modality on early ambulation following total knee arthroplasty. Regional Anesthesia and Pain Medicine 2013 July; 38(4) 334-339 (PA)
  2. Chin K J, Perlas A, Chan V.  The ultrasound-assisted paraspinous approach to lumbar neuraxial blockade – a simplified technique in patients with difficult anatomy. Acta Anaesthesiologica Scandinavica 2015 May; 59: 668-673 (CPA)
  3. Perlas A, Chaparro L, Chin KJ.  Lumbar neuraxial ultrasound for spinal and epidural anesthesia.  A systematic review of the literature and meta-analysis. Regional Anesthesia and Pain Medicine 2015 April e-pub ahead of print; DOI: 10.1097/AAP: 0000000000000184 (PA)
  4. Cruz-Eng H, Riazi S, Veillette C, Ami N, Niazi AU, Chin KJ, Chan V, Perlas A.  Early discharge and ambulatory continuous brachial plexus analgesia is a cost-effective alternative to standard inpatient care following complex arthroscopic elbow surgery.  A randomized, single-blinded study. Anesthesiology 2015; accepted for publication (SRA)
  5. Perlas A, Mitsakakis N, Liu L, Cino M, Haldipur N, Davis L, Cubillos J, Chan V.  Validation of a mathematical model for ultrasound assessment of gastric volume by gastroscopic examination.   Anesthesia and Analgesia 2013 February; 116(2) 357-363 (PA)
  6. Kruisselbrink R, Arzola C, Endersby R, Tse C, Chan V, Perlas A.  Intra and inter-rater reliability of ultrasound assessment of gastric volume. Anesthesiology 2014 July; 121 (1):46-51 (SRA)
  7. Spencer AO, Walker AM, Yeung AK, Lardner DR, Yee K, Mulvey J, Perlas A.  Ultrasound assessment of gastric volume in the fasted pediatric patient undergoing upper gastrointestinal endoscopy: development of a predictive model using endoscopically-suctioned volumes. Pediatric Anesthesia 2015 January; 25: 301-308 (SRA)
  8. Perlas A, Van de Putte P, Van Houwe P, Chan VWS.  An I-AIM framework for point-of-care gastric ultrasound. British Journal of Anesthesia 2015 May e-pub ahead of print DOI: 10.1093/bja/aev113 (PA)
  9. Arzola C, Perlas A, Siddiqui N, Carvalho J.  Bedside gastric ultrasonography in term pregnant women before elective Cesarean delivery: A prospective cohort study. Anesthesia and Analgesia 2015; July e-pub ahead of print DOI: 10,1213/ ANE0000000000000818 (CPA)
  10. Alakkad H, Kruisselbrink R, Chin K J, Niazi A, Abbas S, Chan V, Perlas A.  Point-of-care gastric ultrasound defines gastric content and changes the anesthetic management of elective surgical patients who have not followed fasting instructions. Canadian Journal of Anesthesia 2015; accepted for publication (SRA)

Honours and Awards

Best of the Meeting Abstract and Fellow Travel Award

April 2018 - World Congress on Regional Anesthesia and Pain Therapy, for the abstract: “The Effect of Anesthetic Technique on Mortality and Major Morbidity Following Hip Fracture Fixation.  A Retrospective, Propensity-Score Matched-Pair Cohort Study”.   New York, New York, USA (to fellow under my supervision)

Finalist, Best of Meeting Abstract, International Anesthesia Research Society

April 2018 - for the abstract: “Diagnostic Accuracy of Point-of-Care Gastric Ultrasound: A Bayesian Analysis” (to resident under my supervision)

Distinguished Service Award

Sept 2017 -European Society of Regional Anesthesia, Spanish Chapter, Madrid, Spain

Excellence in Continuing Medical Education Award

June 2017 - Department of Anesthesia and Pain Management, Sinai Health System and University Health Network.

Marion and Earl Orser Award

May 2016 - (awarded to clinical/research fellow Hillenn Cruz-Eng under my supervision) for best clinical peer-reviewed publication published as a first author (in 2015) by a University of Toronto resident or fellow in the areas of Anesthesia and Sleep Medicine.  Published in Anesthesiology 2015 December; 123(6): 1256-66 

Best Pediatric Anesthesia Paper

2015 - Annual Meeting of the Canadian Anesthesiologists’ Society.  Title: “Antral Sonography in pediatric patients with large gastric volumes” Ottawa, ON

David Fear Award

Nov 2014 - For outstanding contributions to continuing medical education and continuing professional development, University of Toronto, Department of Anesthesia

Best paper

May 2013 - presented by a Fellow at the 34th Annual Shield’s Anesthesia Research Day,   Does gastric ultrasound change anesthetic management in non-fasted elective surgical patients?  

David Bevan Award

May 2012 - For Best Poster presentation at the 33rd Annual Shield’s Anesthesia Research Day, University of Toronto, Department of Anesthesia, Popliteal block at the site of sciatic nerve bifurcation through a common nerve sheath.  A randomized, double-blind study

Postgraduate Teaching Award

Nov 2010 - Department of Anesthesia and Pain Management, Mount Sinai Hospital and University Health Network for excellence in teaching

Best-of-Meeting Abstract

April 2009 - American Society of Regional Anesthesia Annual Meeting, Learning ultrasound-guided supraclavicular block: Success rates and patterns of nerve sparing, Phoenix, AZ

Best of Meeting Abstract

March 2004 - American Society of Regional Anesthesia Annual Meeting, Ultrasound localization of the sciatic nerve.  A preliminary study, Orlando, FL

The Hynek Rothbart Award

May 2002 - for best paper presented at the 24th Annual Shield’s Research Day, Department of Anesthesia, University of Toronto, ultrasound localization of the brachial plexus, Toronto, ON