Original ResearchPublished 8 October 2026Status and influencing factors of self-care among patients with chronic heart failure and their spouses from a dual perspective: a cross-sectional studyXiaoyan Wu · Yiyu Zhuang · Manjun Wang · Jinhua Jin · Jun Xie · Yuting KeFrontiers in Cardiovascular Medicinedoi 10.3389/fcvm.2026.1818518