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Background: The COVID-19 pandemic has reduced access to endomyocardial biopsy (EMB) rejection surveillance in heart transplant (HT) recipients. This study is the first in Canada to assess the role for noninvasive rejection surveillance in personalizing titration of immunosuppression and patient satisfaction post-HT. Methods: In this mixed-methods prospective cohort study, adult HT recipients more than 6 months from HT had their routine EMBs replaced by noninvasive rejection surveillance with gene expression profiling (GEP) and donor-derived cell-free DNA (dd-cfDNA) testing. Demographics, outcomes of noninvasive surveillance score, hospital admissions, patient satisfaction, and health status on the medical outcomes study 12-item short-form health survey (SF-12) were collected and analyzed, using t tests and χ2 tests. Thematic qualitative analysis was performed for open-ended responses. Results: Among 90 patients, 31 (33%) were enrolled. A total of 36 combined GEP/dd-cfDNA tests were performed; 22 (61%) had negative results for both, 10 (27%) had positive GEP/negative dd-cfDNA results, 4 (11%) had negative GEP/positive dd-cfDNA results, and 0 were positive on both. All patients with a positive dd-cfDNA result (range: 0.19%-0.81%) underwent EMB with no significant cellular or antibody-mediated rejection. A total of 15 cases (42%) had immunosuppression reduction, and this increased to 55% in patients with negative concordant testing. Overall, patients' reported satisfaction was 90%, and on thematic analysis they were more satisfied, with less anxiety, during the noninvasive testing experience. Conclusions: Noninvasive rejection surveillance was associated with the ability to lower immunosuppression, increase satisfaction, and reduce anxiety in HT recipients, minimizing exposure for patients and providers during a global pandemic.
Contexte: La pandémie de COVID-19 a réduit l'accès à la biopsie endomyocardique pour surveiller le risque de rejet après une greffe du cÅur. Cette étude est la première à être menée au Canada pour évaluer le rôle de la surveillance non invasive du risque de rejet en personnalisant le titrage de l'immunosuppression et la satisfaction du patient après la greffe cardiaque. Méthodologie: Dans le cadre de cette étude de cohorte prospective à méthodes mixtes, des adultes ayant reçu une greffe cardiaque depuis plus de six mois ont vu leurs biopsies endomyocardiques régulières remplacées par une surveillance non invasive du risque de rejet qui consiste à établir le profil de l'expression génique et à analyser l'ADN acellulaire dérivé du donneur. Les données démographiques, les résultats du score de surveillance non invasive, les admissions à l'hôpital, la satisfaction des patients et l'état de santé tirés du questionnaire SF-12 (questionnaire abrégé sur la santé comprenant 12 items) de l'étude sur les issues médicales ont été colligés et analysés au moyen des tests T et des tests χ2. Les réponses ouvertes ont fait l'objet d'une analyse qualitative thématique. Résultats: Parmi 90 patients, 31 (33 %) ont été recrutés. Au total, 36 tests combinés de profilages de l'expression génique et d'ADN acellulaire dérivé du donneur ont été réalisés; les résultats ont été négatifs pour les deux tests dans 22 cas (61 %), positifs pour le profilage de l'expression génique et négatifs pour l'ADN acellulaire dans 10 cas (27 %), négatifs pour le profilage de l'expression génique et positifs pour l'ADN acellulaire dans quatre cas (11 %) et aucun cas n'a donné de résultats positifs pour les deux types de tests. Tous les patients qui ont donné des résultats positifs à l'analyse de l'ADN acellulaire dérivé du donneur (fourchette : 0,19 % à 0,81 %) ont subi une biopsie endomyocardique n'ayant révélé aucun rejet cellulaire ou à médiation par anticorps important. Au total, 15 cas (42 %) affichaient une immunosuppression réduite, proportion qui a grimpé à 55 % chez les patients dont les tests de concordance ont donné des résultats négatifs. Dans l'ensemble, le niveau de satisfaction rapporté par les patients était de 90 % et, à l'analyse thématique, ils étaient plus satisfaits et moins anxieux pendant les tests non invasifs. Conclusions: La surveillance non invasive du risque de rejet a été associée à la capacité de diminuer l'immunosuppression, d'augmenter la satisfaction et de réduire l'anxiété chez les patients qui ont reçu une greffe cardiaque, en plus de réduire l'exposition des patients et du personnel médical dans le contexte d'une pandémie.
RESUMEN
BACKGROUND: Indigenous populations have remained strong and resilient in maintaining their unique culture and values, despite centuries of colonial oppression. Unfortunately, a consequential result of facing years of adversity has led Indigenous populations to experience a disproportionate level of poorer health outcomes compared to non-Indigenous populations. Specifically, the rate of Indigenous chronic disease prevalence has significantly increased in the last decade. Many of the unique issues Indigenous populations experience are deeply rooted in their colonial history and the intergenerational traumas that has subsequently impacted their physical, mental, emotional and spiritual well-being. With this, to better improve Indigenous health outcomes, understanding the local context of their challenges is key. Studies have begun to use modes of community engagement to initiate Indigenous partnerships and design chronic disease-based interventions. However, with the lack of a methodological guideline regarding the appropriate level of community engagement to be used, there is concern that many interventions will continue to fall short in meeting community needs. OBJECTIVE: The objective of this study was to investigate the how various community engagement strategies have been used to design and/or implement interventions for Indigenous populations with chronic disease. METHODS: A scoping review guided by the methods outlined by Arksey and O'Malley was conducted. A comprehensive search was completed by two reviewers in five electronic databases using keywords related to community engagement, Indigenous health and chronic disease. Studies were reviewed using a descriptive-analytical narrative method and data was categorized into thematic groups reflective of the main findings. RESULTS: We identified 23 articles that met the criteria for this scoping review. The majority of the studies included the use a participatory research model and the procurement of study approval. However, despite the claimed use of participatory research methods, only 6 studies had involved community members to identify the area of priority and only five had utilized Indigenous interview styles to promote meaningful feedback. Adapting for the local cultural context and the inclusion of community outreach were identified as the key themes from this review. CONCLUSION: Many studies have begun to adopt community engagement strategies to better meet the needs of Indigenous Peoples. With the lack of a clear guideline to approach Indigenous-based participatory research, we recommend that researchers focus on 1) building partnerships, 2) obtaining study approval and 3) adapting interventions to the local context.