RESUMO
Current remote monitoring devices for heart failure have been shown to reduce hospitalizations but are invasive and costly; accurate non-invasive options remain limited. The EuleriAn Video Magnification ApPLications In Heart Failure StudY (AMPLIFY) pilot aimed to evaluate the accuracy of a novel noninvasive method that uses Eulerian video magnification. Video recordings were performed on the neck veins of 50 patients who were scheduled for right heart catheterization at the Palo Alto VA Medical Center. The recorded jugular venous pulsations were then enhanced by applying Eulerian phase-based motion magnification. Assessment of jugular venous pressure was compared across three categories: (1) physicians who performed bedside exams, (2) physicians who reviewed both the amplified and unamplified videos, and (3) direct invasive measurement of right atrial pressure from right heart catheterization. Motion magnification reduced inaccuracy of the clinician assessment of central venous pressure compared to the gold standard of right heart catheterization (mean discrepancy of -0.80 cm H2O; 95% CI -2.189 to 0.612, p = 0.27) when compared to both unamplified video (-1.84 cm H2O; 95% CI -3.22 to -0.46, p = 0.0096) and the bedside exam (-2.90 cm H2O; 95% CI -4.33 to 1.40, p = 0.0002). Major categorical disagreements with right heart catheterization were significantly reduced with motion magnification (12%) when compared to unamplified video (25%) or the bedside exam (27%). This novel method of assessing jugular venous pressure improves the accuracy of the clinical exam and may enable accurate remote monitoring of heart failure patients with minimal patient risk.
RESUMO
Low-income children's access to meals decreases during the summer months due to losing the benefit of the free and reduced-price lunches they normally receive during the school year. Few studies critically examine community-based approaches to providing summer meals. This mixed methods study examined a mobile meal program implemented in a community with large economic disparities. Parents and caregivers who attended the mobile meal program with a child at one of three sites completed surveys that screened for risk of food insecurity and examined access and utilization of community food resources. Interviews with a representative subsample of English- and Spanish-speaking participants elicited an in-depth understanding of food insecurity in the community and perspectives on the mobile meal program. Surveys (n = 284) were completed in English (78%) and Spanish (22%). Participants identified primarily as Asian (32%), Latino/Hispanic (29%), and White (27%), with 26% screening positive for risk of food insecurity within the past 12 months. Qualitative interviews (n = 36) revealed widespread support for meals served in public settings as they were perceived to be welcoming, fostered social interactions, and helped the community at large. Participants described the high cost of living as a key motivation for participating and cited immigration fears as a barrier to accessing public resources. Findings from this study suggest the importance of innovative community-based approaches to serving hard-to-reach children during the summer.