Nicholas Vozoris




Dr. Vozoris is an Assistant Professor and Clinician Investigator within the Division of Respirology, Department of Medicine, at the University of Toronto. He is also a Staff Respirologist at St. Michael’s Hospital with expertise in sleep medicine, hereditary hemorrhagic telangiectasia (HHT) and tuberculosis. He completed a Masters of Health Sciences degree in the Department of Community Health at the University of Toronto prior to his medical training. He also undertook research training at the Institute of Clinical Evaluative Sciences prior to coming on faculty at the University of Toronto. His main research interest is areas of overlap between sleep medicine and obstructive lung disease, such as the pharmacoepidemiology and health outcomes of sedative medication use in chronic respiratory disease populations. He also has research interests in the health effects of insomnia.  He uses observational study designs and techniques, and different types of pre-existing, population-based databases, such as Ontario provincial health administrative databases that are housed at the Institute of Clinical Evaluative Sciences and United States national health survey data that are available through the Centers for Disease Control and Prevention. He is a member of the Ontario COPD Population Health Network (COPD OPHN), which is a group of academic respirologists from various universities across Ontario who are working collaboratively on health services and health outcomes research relating to COPD.

Recent Publications

  1. Wu, V, Lee, JM, Vozoris, NT, Faughnan, ME. Weekly epistaxis duration as an indicator of epistaxis severity in hereditary hemorrhagic telangiectasia-Preliminary results from a randomized controlled trial. Laryngoscope Investig Otolaryngol. 2021;6 (3):370-375. doi: 10.1002/lio2.561. PubMed PMID:34195356 PubMed Central PMC8223446.
  2. Vozoris, NT, Wilton, AS, Austin, PC, Kendzerska, T, Ryan, CM, Gershon, AS et al.. Morbidity and mortality reduction associated with polysomnography testing in idiopathic pulmonary fibrosis: a population-based cohort study. BMC Pulm Med. 2021;21 (1):185. doi: 10.1186/s12890-021-01555-x. PubMed PMID:34078346 PubMed Central PMC8170825.
  3. Vozoris, NT, To, TM, Ryan, CM, Chow, CW. Airways flow limitation in symptomatic adult cannabis smokers. Int J Tuberc Lung Dis. 2021;25 (6):505-507. doi: 10.5588/ijtld.21.0044. PubMed PMID:34049615 .
  4. Vozoris, NT. Opioids for Dyspnea in Chronic Obstructive Pulmonary Disease: Short on the Details. Am J Respir Crit Care Med. 2021;203 (2):266-267. doi: 10.1164/rccm.202008-3333LE. PubMed PMID:33022187 PubMed Central PMC7874423.
  5. Vozoris, NT, Pequeno, P, Li, P, Austin, PC, Stephenson, AL, O'Donnell, DE et al.. Morbidity and mortality associated with prescription cannabinoid drug use in COPD. Thorax. 2021;76 (1):29-36. doi: 10.1136/thoraxjnl-2020-215346. PubMed PMID:32999059 .
  6. Gupta, S, Batt, J, Bourbeau, J, Chapman, KR, Gershon, A, Granton, J et al.. Triaging Access to Critical Care Resources in Patients With Chronic Respiratory Diseases in the Event of a Major COVID-19 Surge: Key Highlights From the Canadian Thoracic Society (CTS) Position Statement. Chest. 2020;158 (6):2270-2274. doi: 10.1016/j.chest.2020.07.018. PubMed PMID:32693101 PubMed Central PMC7368654.
  7. Vozoris, NT, Pequeno, P, Li, P, Austin, PC, O'Donnell, DE, Gershon, AS et al.. Predictors of Opioid-related Adverse Pulmonary Events among Older Adults with Chronic Obstructive Pulmonary Disease. Ann Am Thorac Soc. 2020;17 (8):965-973. doi: 10.1513/AnnalsATS.201910-760OC. PubMed PMID:32396385 .
  8. Kennedy, SA, Faughnan, ME, Vozoris, NT, Prabhudesai, V. Reperfusion of Pulmonary Arteriovenous Malformations Following Embolotherapy: A Randomized Controlled Trial of Detachable Versus Pushable Coils. Cardiovasc Intervent Radiol. 2020;43 (6):904-909. doi: 10.1007/s00270-020-02422-8. PubMed PMID:32020296 .
  9. Vozoris, NT. Opioid utility for dyspnea in chronic obstructive pulmonary disease: a complicated and controversial story. Ann Palliat Med. 2020;9 (2):571-578. doi: 10.21037/apm.2019.11.04. PubMed PMID:31865744 .
  10. Snellings, DA, Gallione, CJ, Clark, DS, Vozoris, NT, Faughnan, ME, Marchuk, DA et al.. Somatic Mutations in Vascular Malformations of Hereditary Hemorrhagic Telangiectasia Result in Bi-allelic Loss of ENG or ACVRL1. Am J Hum Genet. 2019;105 (5):894-906. doi: 10.1016/j.ajhg.2019.09.010. PubMed PMID:31630786 PubMed Central PMC6848992.
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Affiliations & Other Activities

  • Staff Respirologist and Clinician Investigator, Division of Respirology, Department of Medicine, St. Michael’s Hospital
  • Assistant Professor, Division of Respirology, Department of Medicine, University of Toronto