Primary Care Severe Asthma Registry and Education Project (PCSAR-EDU): Phase 1 - an e-Delphi for registry definitions and indices of clinician behaviour

INTRODUCTION

Although most asthma is mild to moderate, severe asthma accounts for disproportionate personal and societal costs. Poor co-ordination of care between primary care and specialist settings is recognised as a barrier to achieving optimal outcomes. The Primary Care Severe Asthma Registry and Education (PCSAR-EDU) project aims to address these gaps through the interdisciplinary development and evaluation of both a 'real-world' severe asthma registry and an educational programme for primary care providers. This manuscript describes phase 1 of PCSAR-EDU which involves establishing interdisciplinary consensus on criteria for the: (1) definition of severe asthma; (2) generation of a severe asthma registry and (3) definition of an electronic-medical record data-based Clinician Behaviour Index (CBI).

METHODS AND ANALYSIS

In phase 1, a modified e-Delphi activity will be conducted. Delphi panellists (n≥13) will be invited to complete a 30 min online survey on three separate occasions (i.e., three separate e-Delphi 'rounds') over a 3-month period. Expert opinion will be collected via an open-ended survey ('Open' round 1) and 5-point Likert scale and ranking surveys ('Closed' round 2 and 3). A fourth and final Delphi round will occur via synchronous meeting, whereby panellists approve a finalised ideal 'core criteria list', CBI and corresponding item weighting.

ETHICS AND DISSEMINATION

Ethical approval has been obtained for the activities involved in phase 1 from the University of Toronto's Human Research Ethics Programme (approval number 39695). Future ethics approvals will depend on information gathered in the proceeding phase; thus, ethical approval for phase 2 and 3 of this study will be sought sequentially. Findings will be disseminated through conference presentations, peer-reviewed publications and knowledge translation tools.

Determining the Impact of an Educational Intervention on Family Medicine Residents' Social Cognitions and Behavior for Discussing Physical Activity

Problem: Primary care providers are recognized as important advocates for physical activity (PA); yet, clinical PA discussions remain infrequent. Educational approaches promoting the uptake of strategies that are proven to increase patient PA levels are effective for improving primary care providers' social cognitions and behavior for discussing PA with patients. However, research on the effectiveness of such educational interventions among family medicine residents is limited. Intervention: Using the Theory of Planned Behavior (TPB), an interactive, educational intervention was developed to increase PA discussion between first year family medicine residents and their patients. This study aimed to determine the impact of the intervention on residents' social cognitions and behavior for discussing PA with all adult (18-64 years) patients. Context: The intervention condition was comprised of 15 first year residents (2017/2018) who: (1) received the full intervention, and (2) completed both the pre- and post-intervention TPB questionnaires assessing changes in PA discussion social cognitions, and (3) had their medical charts reviewed for PA discussion behavior. The nonintervention condition was comprised of 15 first-year residents (2016/2017) who were randomly selected to have their medical charts reviewed for PA discussion behavior. Impact: Although no significant differences in social cognitions were observed pre- vs. post-intervention, intervention condition residents' perceptions of feeling adequately trained to discuss PA increased post-intervention (p = 0.005). A difference in residents' PA discussion behavior was observed between conditions at post (p = 0.01), where PA was discussed at more patient visits among intervention condition residents. Lessons Learned: Findings suggest that the observed effect of resident PA discussion behavior being greater in the intervention condition at post may be attributed to the intervention condition residents having received the theory-based, educational workshops. This study highlights the importance of educating and training residents on strategies for PA discussion; however, future interventions should address both the reflective and automatic processing aspects of behavior and strive to influence organizational factors that impact resident behavior for discussing PA.Supplemental data for this article is available online at at 10.1080/10401334.2021.1891542.

Airway hyperresponsiveness in patients with normal spirometry results and symptoms compatible with asthma: Primary care retrospective chart review

OBJECTIVE

To evaluate the proportion of patients with symptoms suggestive of asthma and normal lung function who exhibit airway hyperreactivity with methacholine challenge testing (MCT) in primary care.

DESIGN

Retrospective chart review.

SETTING

Primary care lung clinic in Toronto, Ont.

PARTICIPANTS

A total of 69 patients presenting to the lung clinic who had symptoms compatible with asthma, normal spirometry test results, and were referred for MCT.

MAIN OUTCOME MEASURES

Descriptive statistics, frequency counts, independent t tests, and ² tests were used to examine differences in the proportion of clinical and demographic variables identified in patients with or without a positive MCT result. Effect size was determined between MCT-positive and MCT-negative patients for both categorical ( coefficient) and continuous (Hedges g) data.

RESULTS

Twenty-one patients (30.4%) had positive MCT results, and 48 patients (69.6%) had negative MCT results. Family history of asthma and reduced baseline and postbronchodilator forced expiratory volume in 1 second were associated with a positive MCT result.

CONCLUSION

The findings of this study provide insight into the utility of simple spirometry for asthma diagnosis and the need to further clarify the role of MCT in the primary care setting.

Identifying "real-world" initiatives for knowledge translation tools: a case study of community-based physical activity programs for persons with physical disability in Canada

"Real-world" initiatives represent an important source of information for evidence-based practice; however, accessing information about initiatives is often challenging. Casebooks are an innovative knowledge translation (KT) tool for researchers, practitioners, and end-users to address "research-to-implementation gaps" through sharing "real-world" experiences. Several casebooks have been published; yet, they remain inconsistent in their methodological approach for identifying "real-world" initiatives. The purpose of this project is to describe and apply systematic scoping study methods for the identification of "real-world" initiatives relevant for the development of KT tools. Specifically, systematic scoping study methods were developed to identify community-based physical activity (PA) programs for persons with physical disabilities across Canada. To identify PA programs, a search strategy was developed and included five distinct search approaches: (i) peer-reviewed literature databases, (ii) grey literature databases, (iii) customized Google search engines, (iv) targeted websites, and (v) consultation with content experts. Title screening and hand searching identified 478 potentially relevant PA programs. Full record review identified 72 PA programs that met KT tool criteria. The most comprehensive search approach was targeted websites, which identified 25 (35%) unique PA programs, followed by content experts (n = 12; 17%). Only four (5.6%) unique PA programs were identified via custom Google searching. No PA programs were uniquely identified through peer- or grey literature database searches. This study describes and applies a systematic scoping study methodology that serves as a basis for identifying and selecting "real-world" initiatives that are central to the development of evidence-based KT tools.

Acute aerobic exercise impairs aspects of cognitive function at high altitude

Hypoxia-mediated cognitive dysfunction can be transiently mitigated by exercise in a laboratory-based setting. Whether this effect holds true in the context of high altitude hypoxia has not been determined. We investigated the effect of acute aerobic exercise on cognitive function (CF) at low (1400m) and high altitude (4240m). Fifteen volunteers (24.1±3.5yrs; 9 females) exercised for 20-min at 40-60% of their heart rate reserve at low and high altitude. CF was assessed before and 10-min after exercise using a tablet-based battery of executive function tests. A sea-level control group (n=13; 24.2±2.4 years; 9 females) performed time-matched CF tests to assess the contribution of a learning effects due to repeated testing. Measures of resting CF were unaffected by ascent to high altitude. Following high altitude exercise, performance significantly worsened on the digit symbol substitution task - a test of processing speed, working memory, and visuospatial attention (z=0.01 vs. -0.59, p=0.02, η²=0.35). No effect was found on other measures of CF following exercise. There was no association between changes in peripheral oxygen saturation and changes in CF following high altitude exercise (r=0.22, p=0.44), but higher hemoglobin concentration at high altitude was associated with a decline in CF following exercise at high altitude (r=-0.65, p=0.02). Acute aerobic exercise performed at high altitude impairs some aspects of CF, whereas other CF tests remain unchanged. The strong ecological validity of this study warrants attention and follow-up investigations are needed to better characterize selective impairment of CF with high altitude exercise.

Variation Among Spirometry Interpretation Algorithms

Several algorithms exist to facilitate spirometric interpretation in clinical practice, yet there is a lack of consensus on how spirometric criteria for asthma, COPD, and restrictive disorders should be incorporated into spirometry interpretation algorithms suitable for use in day-to-day primary care management. The purpose of this review was to identify and describe the variability that exists among spirometry interpretation algorithms and how this might be relevant to the interpretation of spirometric data of common conditions encountered in primary care. MEDLINE, Embase, and mainstream search engines were used to identify all English-language spirometry interpretation algorithm-related material between January 1990 and December 2018. Eight variations in spirometry interpretation algorithms were identified via specific a priori assumptions that each spirometry interpretation algorithm should contain content consistent with national and international guidelines related to spirometry interpretation. Of the 26 spirometry interpretation algorithms identified, 5 were deemed impractical for day-to-day use in primary care (19%), 23 lacked a logic string leading to the postbronchodilator FEV₁/FVC (88%), 4 relied on postbronchodilator change in FEV₁ to distinguish between asthma and COPD (15%), 24 lacked a prompt for bronchodilator challenge when FEV₁/FVC was considered to be at a normal level (92%), 12 did not indicate whether the data represented a prebronchodilator or postbronchodilator scenario (46%), 7 did not include a logic string that considers mixed obstructive/restrictive defect (27%), 23 did not contain a prompt to refer for methacholine challenge testing when spirometry appeared normal (88%), and 2 spirometry interpretation algorithms did not include a logic string leading to restrictive disorder (8%). Our review suggests that there is considerable variability among spirometry interpretation algorithms available as diagnostic aids and that there is a need for standardization of spirometry interpretation algorithms in primary care.

Evaluating the Implementation and Impact of a Motivational Interviewing Workshop on Medical Student Knowledge and Social Cognitions Towards Counseling Patients on Lifestyle Behaviors

Problem: Although motivational interviewing is an effective patient-centered counseling method that healthcare providers can adopt to promote positive behavior change among patients, motivational interviewing is not routinely taught in medical schools. Intervention: A 3.5-hour motivational interviewing workshop was delivered to second year students at a Canadian medical school. Students were first introduced to the concept of motivational interviewing, and then given an opportunity to apply this knowledge in smaller seminar groups to increase their competency within the context of lifestyle behaviors. Context: Using the Theory of Planned Behavior, this study sought to evaluate the impact of the workshop on medical students' motivational interviewing knowledge and social cognitions. Questionnaires were distributed to students pre- and immediately post-workshop to gather student demographics, previous motivational interviewing experience, current motivational interviewing knowledge and Theory of Planned Behavior social cognitions for using motivational interviewing. Repeated-measures ANOVAs assessed changes in motivational interviewing knowledge and social cognitions. During the workshop, a process evaluation assessing fidelity to and quality of motivational interviewing instruction was conducted. Outcome: The process evaluation indicated high fidelity and high quality of delivery of the workshop by all facilitators. Students (N = 27; M_age = 24 ± 2 years) reported significant increases in motivational interviewing knowledge from pre- to post-workshop (p = 0.001). Although not significant, small-to-moderate effect sizes in changes in social cognitions were reported from pre- to post-workshop. Lesson Learned: Medical students hold motivational interviewing in a high regard, as evidenced by the relatively high social cognitions observed prior to the commencement of the workshop. We learned that while a shorter, workshop-style approach is successful in increasing motivational interviewing knowledge, future workshops should allocate more time to skill acquisition to ensure proficiency in clinical use. Practice PointsMotivational interviewing (MI), an effective patient-centred counseling method that promotes positive patient behavior change, is not routinely taught in medical schools.The theory-based evaluation of the implementation and impact of an MI workshop for second year medical students revealed high quality of delivery and significant improvements in self-reported MI knowledge.While the workshop was implemented as intended and based on the Theory of Planned Behavior, no significant changes in students' social cognitions for using MI with future patients was seen from pre- to post-workshop.The fulsome workshop description and suggestions for future workshop modifications may be adopted by others interested in incorporating MI-specific training into the medical school curriculum.

The impact of acute mental stress on brachial artery flow-mediated dilation in women diagnosed with depression

Endothelial function, assessed by flow-mediated dilation (FMD), may be transiently attenuated in healthy adults following acute mental stress. However, the impact of acute mental stress on endothelial function in the context of clinical depression is unknown. This study examined the impact of acute mental stress on FMD in women with a diagnosis of a depressive disorder. Forty-three otherwise healthy women (33 ± 14 years) participated. Brachial artery diameter and blood velocity were assessed with ultrasound. FMD was assessed immediately prior to and 15 min following the Trier Social Stress Test (TSST). The FMD protocol included 5 min of forearm cuff occlusion (pressure = 250 mm Hg), followed by release. Shear stress was estimated by calculating shear rate (SR = brachial artery blood velocity/diameter). Stress reactivity was assessed via changes in mean arterial pressure (MAP), heart rate (HR) and salivary cortisol. Results are mean ± SD. A significant stress response was elicited by the TSST [MAP, HR and salivary cortisol increased (p < 0.05)]. Neither the SR stimulus nor FMD response differed pre-versus post-stress (p = 0.124 and p = 0.641, respectively). There was a modest negative correlation between cortisol reactivity and change in FMD from pre- to post-stress (R = -0.392, p = 0.011). To conclude, acute mental stress did not consistently impair endothelial function in women diagnosed with a depressive disorder; however, higher cortisol reactivity may increase the likelihood of post-stress endothelial dysfunction. Further research is required to better understand the factors influencing the relationship between acute mental stress, cortisol and endothelial function in women with depression.

The Role of Physical Activity Prescription in Cardiovascular Disease Prevention Amongst South Asian Canadians

Unequivocal evidence suggests an increased prevalence of cardiovascular disease (CVD) amongst South Asian Canadians (SACs) compared to other ethnic cohorts, due to a combination of their unique cardiometabolic profile and environmental factors. This unfavorable CVD profile is characterized by an elevated risk of dyslipidemia, high apolipoprotein B/apolipoprotein A1 ratio, hypertension, glucose intolerance, type 2 diabetes mellitus, as well as increased BMI, body fat percentage, abdominal and visceral adiposity. Despite the overwhelming evidence for the effectiveness of physical activity (PA) in circumventing the onset of CVD and in the reduction of CVD risk factors, SACs are among the most physically inactive cohorts in Canada. This relates to a set of common and unique socio-cultural barriers, such as gender, beliefs and perceptions about illness, immigration, unfavorable PA environments, and their high prevalence of debilitating chronic diseases. Several strategies to improve PA participation rates in this high-risk population have been suggested, and include the implementation of culturally sensitive PA interventions, as well as clinician training in PA prescription through workshops that emphasize knowledge translation into clinical practice. Therefore, the purpose of this mini-review is to highlight and discuss: (1) the burden of heart disease in SACs (2) the cardiovascular benefits of PA for SACs; (3) factors affecting PA participation among SACs and how they can be addressed; (4) the impact of culturally sensitive PA prescription on CVD prevention; (5) barriers to culture-specific PA prescription by clinicians, and strategies to improve its use and impact.

Integrating Exercise Counseling Into the Medical School Curriculum: A Workshop-Based Approach Using Behavior Change Techniques

Objective. Physician physical activity (PA) counseling remains low due partly to lack of knowledge, emphasizing the importance of providing learning opportunities to develop competency, given the strong associations between PA and health. This study aimed to describe the behavior change techniques (BCTs) used in an "Exercise Expo" workshop and examine the workshop's effectiveness for improving social cognitions to discuss exercise with patients. Methods. Second-year medical students (N = 54; M_age ± SD = 25.4 ± 2.95 years) completed questionnaires assessing attitudes, perceived behavior control (PBC), subjective norms, and intentions to provide PA counseling pre- and postworkshop. Repeated-measures analyses of variance evaluated changes in these theory of planned behavior constructs. Results. The most used BCTs included presenting information from credible sources, with opportunities for practicing the behavior and receiving feedback. Significant increases in attitudes, PBC and intentions to discuss PA were observed from pre-post Exercise Expo (P ≤ .01). No statistically significant differences in subjective norms were observed (P = .06). Conclusions. The Exercise Expo significantly improved social cognitions for PA counseling among medical students. Future interventions should target improvements in subjective norms to increase the likelihood the workshop improves PA counseling behavior. The evidence supports the usefulness of a workshop-based educational strategy to enhance medical students' social cognitions for PA counseling.

The influence of vitamin C on the interaction between acute mental stress and endothelial function

PURPOSE

To determine whether orally administered vitamin C attenuates expected mental stress-induced reductions in brachial artery endothelial function as measured by flow-mediated dilation (FMD).

METHODS

Fifteen men (21 ± 2 years) were given 1000 mg of vitamin C or placebo over two visits in a randomized, double-blinded, within-subject design. Acute mental stress was induced using the Trier Social Stress Test (TSST). Saliva samples for cortisol determination and FMD measures were obtained at baseline, pre-TSST, and 30 and 90-min post-TSST. An additional saliva sample was obtained immediately post-TSST. Cardiovascular stress reactivity was characterized by changes in heart rate (HR) and mean arterial pressure (MAP).

RESULTS

A significant stress response was elicited by the TSST in both conditions [MAP, HR, and salivary cortisol increased (p < 0.001)]. Overall FMD did not differ pre- vs. post-stress (time: p = 0.631) and there was no effect of vitamin C (condition: p = 0.792) (interaction between time and condition, p = 0.573). However, there was a correlation between cortisol reactivity and changes in FMD from pre- to post-stress in the placebo condition (r ² = 0.66, p < 0.001) that was abolished in the vitamin C condition (r ² = 0.02, p = 0.612).

CONCLUSION

Acute mental stress did not impair endothelial function, and vitamin C disrupted the relationship between cortisol reactivity and changes in FMD post-stress. This suggests that acute mental stress does not universally impair endothelial function and that reactive oxygen species signaling may influence the interaction between FMD and stress responses.