null Chelsia Gillis, M.Sc., PhD, RD, CNSC

Investigator, RI-MUHC, Montreal General Hospital site

Surgical and Interventional Sciences Program



surgical nutrition • prehabilitation • Enhanced Recovery After Surgery • patient engagement • surgical outcomes

Research Focus

Major surgery puts patients under substantial physiological stress. Yet, standard care does not include preoperative preparation to combat the stresses of surgery. My research program aims to use multimodal personalized strategies (prehabilitation) to modify surgical risk factors and build resilience in anticipation of surgical stress, so that patients can recover well.

Selected Publications

Click on Pubmed to see my current publications list

  • Gillis C, Ljungqvist O, Carli F. Prehabilitation, enhanced recovery after surgery, or both? A narrative review. Br J Anaesth. 2022 Mar;128(3):434-448. doi: 10.1016/j.bja.2021.12.007. Epub 2022 Jan 7. Erratum in: Br J Anaesth. 2022 Jun;128(6):1061. PMID: 35012741.

  • McIsaac DI, Gill M, Boland L, Hutton B, Branje K, Shaw J, Grudzinski AL, Barone N, Gillis C; Prehabilitation Knowledge Network. Prehabilitation in adult patients undergoing surgery: an umbrella review of systematic reviews. Br J Anaesth. 2022 Feb;128(2):244-257. doi: 10.1016/j.bja.2021.11.014. Epub 2021 Dec 16. PMID: 34922735.

  • Gillis C, Fenton TR, Gramlich L, Keller H, Sajobi TT, Culos-Reed SN, Richer L, Awasthi R, Carli F. Malnutrition modifies the response to multimodal prehabilitation: a pooled analysis of prehabilitation trials. Appl Physiol Nutr Metab. 2022 Feb;47(2):141-150. doi: 10.1139/apnm-2021-0299. Epub 2021 Sep 29. PMID: 34587460.

  • Gillis C, Gill M, Marlett N, MacKean G, GermAnn K, Gilmour L, Nelson G, Wasylak T, Nguyen S, Araujo E, Zelinsky S, Gramlich L. Patients as partners in Enhanced Recovery After Surgery: A qualitative patient-led study. BMJ Open. 2017 Jun 24;7(6):e017002. doi: 10.1136/bmjopen-2017-017002. PMID: 28647727.

  • Gillis C, Li C, Lee L, Awasthi R, Augustin B, Gamsa A, Liberman AS, Stein B, Charlebois P, Feldman LS, Carli F. Prehabilitation versus rehabilitation: a randomized control trial in patients undergoing colorectal resection for cancer. Anesthesiology. 2014 Nov;121(5):937-47. doi: 10.1097/ALN.0000000000000393. PMID: 25076007.