Relevant Degree Programs
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G+PS regularly provides virtual sessions that focus on admission requirements and procedures and tips how to improve your application.
1. Indigenous lung health. Study 1 is to estimate the prevalence of chronic obstructive pulmonary disease in First Nations communities in north-central BC. We are also specific risk related to respiratory symptoms including indoor air quality and occupation. Study 2 is to develop a First Nations pulmonary rehabilitation program, that could include using telehealth to deliver a program. Study 3 aims to develop emergency planning for people with chronic disease living in remote and rural First Nations communities.
2. Pulmonary rehabilitation for individuals hospitalized with an acute exacerbation of COPD. This research program aims to investigate the health services delivery issues related to providing pulmonary rehabilitation in the hospital setting for patients with COPD who are admitted with an exacerbation of their disease. Research questions will include: current practice patterns related to inpatient exercise and mobility; barriers and facilitators to initiating these programs, key components of programs, program components [including exercise and education], and use of interdisciplinary teams.
Graduate Student Supervision
Doctoral Student Supervision (Jan 2008 - May 2019)
Background: Patients with chronic obstructive pulmonary disease (COPD) are known to have an increased risk of ischemic heart disease. Persistently elevated resting heart rate and arterial stiffness, two common clinical manifestations in COPD, are known determinants of myocardial ischemia as well as predictors of cardiovascular events. Controversies exist on the effect of pulmonary rehabilitation on these ischemic heart disease risk factors. No study has explored the effect of pulmonary rehabilitation on the resting heart rate - arterial stiffness relationship in COPD.Objectives and Methods: The overall objectives of this dissertation were to provide a comprehensive investigation of the resting heart rate and arterial stiffness in patients with COPD, and explore the impact of pulmonary rehabilitation on their relationship in this population. We describe the association between resting heart rate and prior myocardial infarction in patients with chronic lung disease attending pulmonary rehabilitation (Chapter 2). We test the reliability of resting heart rate and arterial stiffness measurements in COPD patients (Chapters 3 and 4). We determine the association between resting heart rate and arterial stiffness (Chapter 5), and explore the potential beneficial effects of standard pulmonary rehabilitation on resting heart rate and/or arterial stiffness in COPD (Chapter 6).Summary of findings: We showed that an elevated resting heart rate is a potential indicator of prior myocardial infarction in patients with chronic lung disease (Chapter 2). Resting heart rate and arterial stiffness measurements have excellent and substantial reliability, respectively, under a standardized procedure in COPD patients (Chapters 3 and 4). The association between resting heart rate and arterial stiffness in control subjects is not present in patients with COPD (Chapter 5). Standard pulmonary rehabilitation in COPD reduces arterial stiffness, but not resting heart rate, and does not impact the resting heart rate - arterial stiffness relationship (Chapter 6).Conclusions: This dissertation provides new knowledge on resting heart rate and arterial stiffness, as well as on the potential beneficial effects of pulmonary rehabilitation on these two ischemic heart disease risk factors in COPD patients.
Master's Student Supervision (2010 - 2018)
Background: Acute exacerbations of COPD (AECOPD) are episodes of acute deterioration in airway function and respiratory symptoms. Physical activity and exercise are important components in the recovery of patients from exacerbation. AECOPD-Mob is an evidence-based clinical decision-making tool on best practice for safe and effective exercise for hospitalized AECOPD patients. In our lab, we developed four formats of the tool (the original paper version, a Learner module, a Smartphone app and a traditional Inservice) and evaluated their usability by physical therapists (PTs) and registered nurses (RNs) working in acute care hospitals.Methods: In this study, we have examined the insights of 17 PTs and 3 RNs about the usability and intended use of the AECOPD-Mob formats. The participants were provided with access to the four AECOPD-Mob formats, completed an Evidence-Based-Practice (EBP) Barriers Questionnaire, the Post Study System Usability Questionnaire (PSSUQ) and participated in focus groups to share their thoughts and experiences.Results: We have found that the health care providers (HCPs), PTs and RNs, were satisfied with the usability learner module but were less satisfied with the usability of the Smartphone app. In addition, we originated four key themes from the focus groups: ‘HCPs’ knowledge gaps’, ‘HCPs preferences’, ’Tool quality and usability’ and ‘Improvement suggestions’ and found that the overall preferred version the AECOPD-Mob tool was the original paper version. The learner module and the Inservice were seen as interchangeable and provided necessary information, while the learner module had the benefit of being accessible at any time and, the Inservice had the benefit of better enabled discussion amongst colleagues. The app was considered challenging to use at the bedside, but the content was very favorable. Interestingly, we have found that RNs had a preference for more concise information, while PTs where looking for more broad information in the formats which give more of an overview. Conclusion: We found that PTs and RNs found the AECOPD-Mob paper version to be the easiest and most versatile format. There were concerns about using an App in a hospital setting.Future research should investigate the impact of AECOPD-Mob on patient outcomes.
Pulmonary rehabilitation (PR) is a comprehensive intervention of self-management education and exercise training that improves quality of life, exercise tolerance, symptoms of dyspnea, and reduces the risk of hospitalization in patients living with chronic respiratory diseases such as chronic obstructive pulmonary disease, asthma, lung cancer, and interstitial lung disease. Despite the proven benefit of pulmonary rehabilitation, recent studies have found notable inconsistencies in its organization and delivery. Inconsistencies within clinical practice are likely to affect the quality in the delivery of pulmonary rehabilitation. Quality indicators (QIs) are tools similar to a checklist that can potentially remediate these concerns. While other jurisdictions have created quality indicators for pulmonary rehabilitation programs, their methodological approach to developing these quality indicators is questionable. This study developed 56 quality indicators with a rigorous approach using a modified RAND Appropriateness Method. A panel comprising twelve PR healthcare professionals and stakeholders was created to create a list of QIs. The panel rated each indicator based on four criteria (importance, scientific soundness, reliability, and feasibility) and listed which indicator they believed could determine a quality pulmonary rehabilitation program. This study recommends that the 56 QIs, based upon consensus, be used for operationalizing the evaluation and auditing of PR programs as well as for establishing clinical benchmarks.
Introduction: Chronic Obstructive Pulmonary Disease (COPD) symptoms of dyspnea, exercise intolerance, and reduced health related quality of life are best treated with pulmonary rehabilitation (PR). Despite benefits, transportation, availability of PR programs, and social support barriers limit PR access. Telerehabilitation (TR) may provide the solution by utilizing pulse oximetry to monitor patient oxygen saturation (SpO₂) and heart rate (HR), along with measures of exercise intensity to ensure patient safety during home-based, unsupervised rehabilitation exercise. Study Purpose: To test the validity and reliability of a smartphone system called LungFIT in measuring heart rate, oxygen saturation, and distance in a healthy population. The LungFIT’s functionality was also assessed. Methods: Functionality of the LungFIT was assessed by a time-to-complete test and the adapted Mobile Phone Usability Questionnaire (MPUQ). SpO₂ and HR measurements by 3 different LungFIT probes (Nonin, Masimo, and LionsGate Technologies) were evaluated during 5-minute cycle ergometry (50 watts at 60-70 revolutions/minute) and treadmill walking tests (3km/hr). Both tests were repeated 3 times. Distance measurements were assessed by outdoor walking tests of a 1 city block course. Results: SpO₂ measurements were valid with mean biases ranging between -0.93% and 0.88% and limits of agreement no greater than ±3.78% over the 3 LungFIT probes. The Masimo probe had the smallest mean biases ranging from 0.18% to 0.74% and mean limits of agreement ranging from ±1.94% (±0.93% 95% confidence interval) to ±2.79% (±1.34% 95% confidence interval). All probes had moderate to good SpO₂ measurement reliability (ICCs between 0.65-0.87) with the Masimo probe performing the best (all ICCs ≥ 0.82). During exercise, HR measurements were invalid (mean limits of agreement > 10.00 beats/min), but reliable (ICCs between 0.87-0.97). Time-to-complete assessments found no software issues, but revealed 4 instances of navigation or setup issues. The MPUQ showed ease of use despite lack of interface appeal. Conclusion: During exercise, the 3 LungFIT probes were reliable in measuring SpO₂ and HR, but only valid in measuring SpO₂. Overall, the Masimo probe was the most valid and reliable of the 3 probes tested. Future LungFIT prototypes will improve user interface and accuracy of distance measurements.
Background: Physical activity may reduce mortality risk in advanced chronic lung disease by optimizing functional capacity, which is a major prognostic indicator in lung transplantation candidates. There is uncertainty as to the optimal method to measure physical activity in this patient population. We assessed different commercially-available physical activity measurement techniques (flex heart rate monitoring (FHR); pedometry; tri-axial accelerometry; and multi-sensor technology) by investigating their agreement with indirect calorimetry (IC) in adult lung disease patients (chronic obstructive pulmonary disease (COPD), interstitial lung disease (ILD), and cystic fibrosis (CF)) with advanced pulmonary impairment. Methods: This is a cross-sectional method comparison study conducted on two separate days. We recruited consecutive COPD, ILD, and CF patients with physician diagnosis of advanced pulmonary impairment. On day one, participants performed cardiopulmonary exercise testing until exhaustion with measurements of oxygen uptake (VO₂) and heart rate (HR) collected. On day two, subjects had their VO₂ and HR measured during standardized resting and sub-maximal activity. Simultaneous VO₂ and HR measures from both days were used to develop individual regressions for FHR-derived energy expenditure (EE). We then simultaneously measured each subject’s EE using a variety of index measures of physical activity and IC during standardized “free-living” type activities and varying intensities of sub-maximal cycle exercise. Results: In a sample of eight participants (CF, n=5; COPD, n=2; ILD, n=1), Flex HR methods using submaximal (FMSUB) and CPET-derived (FMCPX) calibrations showed the best agreement and interchangeability with IC during free-living and cycling activities compared to the SenseWear (SW) and ActiCal (AC) devices as evidenced by lower mean differences with IC and widths of limit of agreement (LOA) + 95% confidence interval (CI). For the secondary index methods assessed, the Tractivity and DigiWalker devices significantly over and underestimated IC EE respectively (p<0.05), whereas the Dynaport device did not differ from IC (p>0.05) over the entire protocol. Conclusion: Our study found that the Flex HR method for EE estimation had the lowest bias and variability during free-living activities and exercise. EE estimation using Flex HR methods may be potentially useful clinical tools to ensure metabolic energy balance and activity monitoring in advanced lung disease groups.
Recent Tri-Agency Grants
The following is a selection of grants for which the faculty member was principal investigator or co-investigator. Currently, the list only covers Canadian Tri-Agency grants from years 2013/14-2016/17 and excludes grants from any other agencies.
- Randomized controlled trial of balance training for fall reduction in individuals with COPD - Canadian Institutes of Health Research (CIHR) - Project Grant (2016/2017)
- Personalizing inhaler therapy for men and women with chronic obstructive pulmonary disease (COPD) - Canadian Institutes of Health Research (CIHR) - Catalyst Grant (2015/2016)
- Pulmonary rehabilitation in rural BC: Engaging with aboriginal communities to create novel telehealth approaches - Canadian Institutes of Health Research (CIHR) - Planning and Dissemination Grant - Institute Community Support (2015/2016)
- LungFIT: A smartphone system for pulmonary rehabilitation - Canadian Institutes of Health Research (CIHR) - Catalyst Grant (2013/2014)