{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T06:31:04Z","timestamp":1787725864832,"version":"build-2784847793"},"reference-count":25,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Cardiovasc. Med."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Patients undergoing mechanical valve replacement face lifelong physical and psychological challenges that affect quality of life (QoL). While self-perceived burden and self-care capacity are both associated with QoL, the mediating mechanism by which self-perceived burden influences QoL through self-care capacity remains incompletely understood\u2014particularly among patients with mechanical valve replacement. Clarifying this pathway could inform targeted nursing interventions for this population.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Aim<\/jats:title>\n                    <jats:p>To examine the mediating role of self-care capacity in the relationship between self-perceived burden and QoL among patients with mechanical valve replacement, using structural equation modeling to evaluate both direct and indirect effects.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A cross-sectional design was used with 464 patients from a tertiary hospital in China. Participants completed validated questionnaires: the Self-Perceived Burden Scale(SPBS), the Exercise of Self-Care Agency Scale(ESCAS), and the 36-Item Short Form Survey(SF\u221236). Self-care capacity was modeled as a mediator within the structural equation modeling framework. Bootstrapping with 5,000 resamples was used to verify the significance of the indirect effect.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Self-perceived burden was negatively correlated with both self-care capacity(\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u2009\u22120.760,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&amp;lt;\u20090.001) and QoL(\n                      <jats:italic>r<\/jats:italic>\n                      \u2009=\u2009\u22120.826,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&amp;lt;\u20090.001). Self-care capacity partially mediated the association between self-perceived burden and QoL (indirect effect:\n                      <jats:italic>\u03b2<\/jats:italic>\n                      \u2009=\u2009\u22120.165, 95% bootstrap\n                      <jats:italic>CI<\/jats:italic>\n                      : \u22120.183 to \u22120.147,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&amp;lt;\u20090.001). The final model demonstrated good fit(\n                      <jats:italic>\n                        \u03c7\n                        <jats:sup>2<\/jats:sup>\n                        \/df\n                      <\/jats:italic>\n                      \u2009=\u20092.742, CFI\u2009=\u20090.969, RMSEA\u2009=\u20090.075).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Self-care capacity partially mediates the association between self-perceived burden and QoL in patients undergoing mechanical valve replacement. These findings suggest that interventions targeting both burden reduction and self-care enhancement may help improve QoL, though longitudinal and experimental research is needed to establish causal pathways and confirm clinical implications.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fcvm.2026.1887530","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T06:02:20Z","timestamp":1787724140000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["The mediating role of self-care capacity in the relationship between perceived burden and quality of life among patients following mechanical valve replacement: a structural equation modeling analysis"],"prefix":"10.3389","volume":"13","author":[{"given":"Yuanyuan","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Cardiac Surgery, Institute of Cardiovascular, Guangdong Provincial People's Hospital (Guangdong 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