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Laura Murphy,1– 3 Kori Leblanc,1,2,4 Souzi Badr,1,2 Emily Ching,1 Lynda Mao,1,2 Naomi Steenhof,1,2 Bassem Hamandi,1,2,4 Bonita Rubin,1,2 Ada Seto,1 Andrea D Furlan3,5,6 1Department of Pharmacy, University Health Network, Toronto, ON, Canada; 2Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada; 3KITE Research Institute, University Health Network, Toronto, ON, Canada; 4Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada; 5Department of Medicine, University of Toronto, Toronto, ON, Canada; 6Institute for Work & Health, Toronto, ON, CanadaCorrespondence: Laura Murphy, Department of Pharmacy, University Health Network, 550 University Ave, Toronto, ON, M5G 2A2, Canada, Tel +1 416-597-3422 x 3657, Fax +1 416-260-2658, Email laura.murphy@uhn.caBackground: Opioid utilization and management in an inpatient rehabilitation setting have not been widely described, despite the unique opportunities that exist in this setting to support opioid stewardship across transitions in care. We aimed to characterize opioid utilization and management by interprofessional teams across a large, inpatient rehabilitation setting after incorporation of opioid stewardship principles by pharmacists as part of their daily practice.Patients and methods: This was a retrospective chart review at Toronto Rehab, University Health Network, Toronto, Canada. Patients with admission orders for any opioid from November 2017 to February 2018 were included. Complex continuing care and palliative care patients were excluded. Descriptive statistics were primarily used to describe the data as well as univariate linear regression to compare associations with milligram morphine equivalent (MME) reduction.Results: A total of 448 patients were included. A reduction in total daily MME was seen in 49% (n=219) of the patients during their inpatient stay, with 73% (n=159) of these patients having a reduction of ≥ 50%. Sixty-nine percent (n=311) of the patients received an opioid prescription at discharge, with most scheduled (90%, n=98) with a supply of less than 30 days. Rehabilitation length of stay was correlated with a MME decrease during rehab (p< 0.01), suggesting that longer lengths of stay contributed to a greater reduction in MME. Patients with chronic opioid use prior to acute care admission (p=0.01), and those who started extended-release opioids during acute care (p=0.02) were significantly less likely to discontinue opioids during rehab stay.Conclusion: Opioid utilization and management in the setting of opioid stewardship across inpatient rehab and transitions of care were characterized. Opportunities exist for further quality improvement initiatives within inpatient rehabilitation and acute care settings to identify and support patients with complex pain management needs.Keywords: opioid, pain management, medication reconciliation, pharmacy practice, medication safety, discharge prescription

Frederik Berrevoet,1 Carl Doerhoff,2 Filip Muysoms,3 Steven Hopson,4 Marco Gallinella Muzi,5 Simon Nienhuijs,6 Eric Kullman,7 Tim Tollens,8 Mark R Schwartz,9 Karl LeBlanc,10 Vic Velanovich,11 Lars Nannestad Jørgensen12 1Department of General and Hepatopancreaticobiliary Surgery, Ghent University Hospital, Ghent, Belgium; 2General Surgery, Surgicare of Missouri, Jefferson City, MO, USA; 3Department of Surgery, AZ Maria Middelares Ghent, Ghent, Belgium; 4Bon Secours Hernia Center, Mary Immaculate Hospital, Newport News, VA, USA; 5University Hospital Tor Vergata, Rome, Italy; 6Catharina Hospital, Eindhoven, the Netherlands; 7Medicinskt Centrum Linköping, Linköping, Sweden; 8Imelda Hospital-General Surgery Imelda Hospital, Bonheiden, Belgium; 9Monmouth Medical Center, Long Branch, NJ, 10Our Lady of Lakes Regional Medical Center, Baton Rouge, LA, 11Tampa General Hospital, University of South Florida, Tampa, FL, USA; 12Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark Purpose: This study assessed the recurrence rate and other safety and efficacy parameters following ventral hernia repair with a polyester composite prosthesis (Parietex™ Composite Ventral Patch [PCO-VP]).Patients and methods: A single-arm, multicenter prospective study of 126 patients undergoing open ventral hernia repair with the PCO-VP was performed. Patient outcomes were assessed at discharge and at 10 days, 1, 6, 12, and 24 months postoperative.Results: All patients had hernioplasty for umbilical (n = 110, 87.3%) or epigastric hernia (n = 16, 12.7%). Mean hernia diameter was 1.8 ± 0.8 cm. Mean operative time was 36.2 ±15.6 minutes, with a mean mesh positioning time of 8.1 ± 3.4 minutes. Surgeons reported satisfaction with mesh ease of use in 95% of surgeries. The cumulative hernia recurrence rate at 1 year was 2.8% (3/106). Numeric Rating Scale (NRS) pain scores showed improvement from 2.1 ± 2.0 at preoperative baseline to 0.5 ± 0.7 at 1 month postoperative (P < 0.001), and this low pain level was maintained at 12 months postsurgery (P < 0.001). The mean global Carolina’s Comfort Scale® (CCS) score improved postoperatively from 3.8 ± 6.2 at 1 month to 1.6 ± 3.5 at 6 months (P < 0.001). One patient was unsatisfied with the procedure.Conclusion: This 1-year interim analysis using PCO-VP for primary umbilical and epigastric defects shows promising results in terms of mesh ease of use, postoperative pain, and patient satisfaction. Recurrence rate is low, but, as laparoscopic evaluation shows a need for patch repositioning in some cases, an accurate surgical technique remains of utmost importance. Keywords: intraperitoneal mesh, epigastric hernia, umbilical hernia, pain

Naomi Steenhof,1,2 Francesca Le Piane,1 Kori Leblanc,1–3 Naomi R Eisenberg,4 Yvonne Kwan,1 Christine Malmberg,1,6 Alexandra Papadopoulos,5,7 Graham Roche-Nagle4,7,8 1Department of Pharmacy, University Health Network, 2Leslie Dan Faculty of Pharmacy, University of Toronto, 3Centre for Innovation in Complex Care, University Health Network, 4Division of Vascular Surgery, University Health Network, 5Faculty of Nursing, University of Toronto, Toronto, ON, 6Victoria General Hospital, Vancouver Island Health Authority, Victoria, BC, 7Peter Munk Cardiac Centre, University Health Network, 8Faculty of Medicine, University of Toronto, Toronto, ON, Canada Background: Peripheral arterial disease (PAD) guidelines recommend aggressive risk factor modification to improve cardiovascular outcomes. Recommended pharmacologic therapies include antiplatelets, angiotensin converting enzyme (ACE) inhibitors, and HMG-CoA-reductase inhibitors (statins). Purpose: We studied the degree to which patient admission to a vascular surgery service increased the use of these therapies. Patients and methods: The authors conducted a retrospective chart review of 150 patients with PAD admitted to the vascular surgery service at a large Canadian tertiary care hospital. The use of recommended pharmacologic therapies at the time of admission and discharge were compared. A multidisciplinary clinical team established criteria by which patients were deemed ineligible to receive any of the recommended therapies. Angiotensin receptor blockers (ARBs) were considered an alternative to ACE inhibitors. Results: Prior to hospital admission, 64% of patients were on antiplatelet therapy, 67% were on an ACE inhibitor or ARB, and 71% were on a statin. At the time of discharge, 91% of patients were on an antiplatelet (or not, with an acceptable reason), 77% were on an ACE inhibitor or an ARB (or not, with an acceptable reason), and 85% were on a statin (or not, with an acceptable reason). While new prescriptions were largely responsible for improved guideline adherence with antiplatelets and statins, most of the apparent improvement in ACE inhibitor and ARB use was the result of identifying an acceptable reason for not having them prescribed. Conclusion: This hypothesis generating pilot study supports the findings of others that there is suboptimal prescription of pharmacologic risk reduction therapies in the PAD population. Admission to a vascular service increases these rates. Nevertheless, some patients are still not receiving evidence-based treatment at discharge even after consideration of acceptable reasons. Strategies are needed to improve PAD guideline adherence in both the community at large and the vascular surgery service. Keywords: guideline adherence, vascular protection, risk reduction

Lori MacCallum,1,2 Heather McGaw,1 Nazanin Meshkat,3 Alissia Valentinis,4 Leslie Beard Ashley,5 Rajan Sacha Bhatia,3,6,7 Kaye Benson,7 Noah Ivers,6,8 Kori Leblanc,2,7 Dante Morra3,5,7 1Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, 2Leslie Dan Faculty of Pharmacy, University of Toronto, 3Department of Medicine, University of Toronto, Toronto, 4Taddle Creek Family Health Team, Toronto, 5Trillium Health Partners, Mississauga, 6Women's College Hospital, Toronto, 7Centre for Innovation in Complex Care, University Health Network, Toronto, 8Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada Abstract: After identifying that significant care gaps exist within the management of atrial fibrillation (AF), a patient-focused tool was developed to help patients better assess and manage their AF. This tool aims to provide education and awareness regarding the management of symptoms and stroke risk associated with AF, while engaging patients to identify if their condition is optimally managed and to become involved in their own care. An interdisciplinary group of health care providers and designers worked together in a participatory design approach to develop the tool with input from patients. Usability testing was completed with 22 patients of varying demographics to represent the characteristics of the patient population. The findings from usability testing interviews were used to further improve and develop the tool to improve ease of use. A physician-facing tool was also developed to help to explain the tool and provide a brief summary of the 2012 Canadian Cardiovascular Society atrial fibrillation guidelines. By incorporating patient input and human-centered design with the knowledge, experience, and medical expertise of health care providers, we have used an approach in developing the tool that tries to more effectively meet patients' needs. Keywords: patient education, atrial fibrillation, care gaps, patient care tools, patient self-assessment

The importance of Zn, Fe, and Si availability for diatom growth and silicification through microcosm enrichment experiments were compared in two High Nutrient Low Chlorophyll (HNLC) systems of the sub-Arctic and Sub-Antarctica Pacific. Diatom growth in the Bering Sea was strongly Fe-limited, while the Sub-Antarctic Zone was mainly limited by Si and only secondarily by Fe.