Lisa Puchalski Ritchie



Research Programs


Dr. Puchalski Ritchie is a Scientist at the Li Ka Shing Knowledge Institute in the Knowledge Translation Program. She is an emergency physician at University Health Network, and an Assistant Professor in the Division of Emergency Medicine, Department of Medicine, at the University of Toronto and Assistant Professor (status only) at the Institute of Health Policy, Management and Evaluation at the University of Toronto. 

She is a clinical epidemiologist with a research focus on the use of knowledge translation strategies to improve health care delivery and outcomes for high burden local identified priority health conditions in resource limited health care settings. 

Please note: Dr. Puchalski Ritchie is not taking any summer students.

Recent Publications

  1. Puchalski Ritchie, LM, Kip, EC, Mundeva, H, van Lettow, M, Makwakwa, A, Straus, SE et al.. Process evaluation of an implementation strategy to support uptake of a tuberculosis treatment adherence intervention to improve TB care and outcomes in Malawi. BMJ Open. 2021;11 (7):e048499. doi: 10.1136/bmjopen-2020-048499. PubMed PMID:34215610 PubMed Central PMC8256754.
  2. Silverberg, SL, Puchalski Ritchie, LM, Gobat, N, Murthy, S. COVID-19 infection prevention and control procedures and institutional trust: Perceptions of Canadian intensive care and emergency department nurses. Can J Anaesth. 2021;68 (8):1165-1175. doi: 10.1007/s12630-021-02028-9. PubMed PMID:34046822 PubMed Central PMC8158085.
  3. Puchalski Ritchie, LM, van Lettow, M, Makwakwa, A, Kip, EC, Straus, SE, Kawonga, H et al.. Impact of a tuberculosis treatment adherence intervention versus usual care on treatment completion rates: results of a pragmatic cluster randomized controlled trial. Implement Sci. 2020;15 (1):107. doi: 10.1186/s13012-020-01067-y. PubMed PMID:33308257 PubMed Central PMC7731739.
  4. Silverberg, SL, Puchalski Ritchie, LM, Gobat, N, Nichol, A, Murthy, S. Clinician-researcher's perspectives on clinical research during the COVID19 pandemic. PLoS One. 2020;15 (12):e0243525. doi: 10.1371/journal.pone.0243525. PubMed PMID:33296427 PubMed Central PMC7725301.
  5. Puchalski Ritchie, LM, van Lettow, M, Pham, B, Straus, SE, Hosseinipour, MC, Rosenberg, NE et al.. What interventions are effective in improving uptake and retention of HIV-positive pregnant and breastfeeding women and their infants in prevention of mother to child transmission care programmes in low-income and middle-income countries? A systematic review and meta-analysis. BMJ Open. 2019;9 (7):e024907. doi: 10.1136/bmjopen-2018-024907. PubMed PMID:31362959 PubMed Central PMC6677958.
  6. Puchalski Ritchie, LM, Debebe, F, Azazh, A. Barriers to and facilitators of the development and utilization of context appropriate evidence based clinical algorithms to optimize clinical care and patient outcomes in the Tikur Anbessa emergency department: a multi-component qualitative study. BMC Health Serv Res. 2019;19 (1):181. doi: 10.1186/s12913-019-4008-2. PubMed PMID:30894150 PubMed Central PMC6425575.
  7. Puchalski Ritchie, LM, Straus, SE. Assessing Organizational Readiness for Change Comment on "Development and Content Validation of a Transcultural Instrument to Assess Organizational Readiness for Knowledge Translation in Healthcare Organizations: The OR4KT". Int J Health Policy Manag. 2019;8 (1):55-57. doi: 10.15171/ijhpm.2018.101. PubMed PMID:30709104 PubMed Central PMC6358647.
  8. Tubman, M, Maskalyk, J, Mackinnon, D, Venugopal, R, Fremes, E, Puchalski Ritchie, LM et al.. Tackling challenges of global health electives: Resident experiences of a structured and supervised medicine elective within an existing global health partnership. Can Med Educ J. 2017;8 (2):e4-e10. . PubMed PMID:29114341 PubMed Central PMC5669288.
  9. Vogel, JP, Moore, JE, Timmings, C, Khan, S, Khan, DN, Defar, A et al.. Barriers, Facilitators and Priorities for Implementation of WHO Maternal and Perinatal Health Guidelines in Four Lower-Income Countries: A GREAT Network Research Activity. PLoS One. 2016;11 (11):e0160020. doi: 10.1371/journal.pone.0160020. PubMed PMID:27806041 PubMed Central PMC5091885.
  10. Puchalski Ritchie, LM, van Lettow, M, Makwakwa, A, Chan, AK, Hamid, JS, Kawonga, H et al.. The impact of a knowledge translation intervention employing educational outreach and a point-of-care reminder tool vs standard lay health worker training on tuberculosis treatment completion rates: study protocol for a cluster randomized controlled trial. Trials. 2016;17 (1):439. doi: 10.1186/s13063-016-1563-2. PubMed PMID:27604571 PubMed Central PMC5015212.
Search PubMed

Affiliations & Other Activities

  • Assistant Professor, Department of Medicine, Division of Emergency Medicine, University of Toronto
  • Emergency Physician, University Health Network