RESUMEN
Background: Cultural humility is a lifelong commitment to self-evaluation, redressing power imbalances in patient-physician relationships and developing mutually trusting beneficial partnerships. Objective: The objective of this study was to determine the feasibility and efficacy of cultural humility training. Methods: From July 2020-March 2021, 90-minute educational workshops attended by 133 medical students, resident physicians and medical education faculty included 1) pre- and post- intervention surveys; 2) interactive presentation on equity and cultural humility principles; 3) participants explored sociocultural identities and power; and 4) reflective group discussions. Results: There were significant increases from pre to post intervention assessments for perception scores (3.89 [SEM= 0.04] versus 4.22 [0.08], p<0.001) and knowledge scores (0.52 [0.02] versus 0.67 [0.02], p<0.001). Commonest identities participants recognized as changing over time were personality = 40%, appearance = 36%, and age =35%. Commonest identities experienced as oppressed/subjugated were race/ethnicity = 54%, gender = 40% and religion = 28%; whilst commonest identities experienced as privileged were gender= 49%, race/ethnicity = 42% and appearance= 25%. Male participants assigned mean power score of 73% to gender identity compared to mean power score of -8% by female participants (P<0.001). Non-Hispanic Whites had mean power score for race identity of 62% compared to 13% for non-white participants (p<0.001). English as a second language was only acknowledged as an oppressed/subjugated identity by those born outside the United States (p<0.001). Conclusion: An interactive educational workshop can increase participants' knowledge and perceptions regarding cultural humility. Participants can self-reflect to recognize sociocultural identities that are oppressed/subjugated or privileged.
RESUMEN
BACKGROUND: Fibrous capsules (Fb) in response to cardiovascular implantable electronic devices (CIEDs), including a pacemaker (P) system, can produce patient discomfort and difficulties in revision surgery due partially to their increased compressive strength, previously linked to elevated tissue fibers. OBJECTIVE: A preliminary study to quantify structural proteins, determine if biologic extracellular matrix-enveloped CIEDs (PECM) caused differential Fb properties, and to implement a realistic mechanical model. METHODS: Retrieved Fb (-P and -PECM) from minipigs were subjected to biomechanical (shear oscillation and uniaxial compression) and histological (collagen I and elastin) analyses. RESULTS: Fb-PECM showed significant decreases compared to Fb-P in: low strain-loss modulus (390 vs. 541 Pa) across angular frequencies, high strain-compressive elastic modulus (1043 vs. 2042 kPa), and elastic fiber content (1.92 vs. 3.15 µg/mg tissue). Decreases in elastin were particularly noted closer to the implant's surface (Fb-PECM = 71% vs. Fb-P = 143% relative to dermal elastin at mid-tangential sections) and verified with a solid mechanics hyperelasticity with direction-dependent fiber viscoelasticity compression simulation (r2 ≥ 98.9%). CONCLUSIONS: The biologic envelope composed of decellularized porcine small intestine submucosa ECM for CIEDs promoted fibrous tissues with less elastic fibers. Novel compression modeling analyses directly correlated this singular reduction to more desirable subcutaneous tissue mechanics.