Abstract: Objective: To explore the influencing factors of health-related work efficiency in young and middle-aged patients with coronary heart disease after returning to work, and to provide basis for improving work ability in young and middle-aged patients with coronary heart disease. Methods: From December 2022 to June 2023, 518 young and middle-aged patients with coronary heart disease who returned to work in the department of cardiovascular medicine of two tertiary grade A hospitals in Suzhou were selected by convenient sampling. General data questionnaire, Patient Reported Outcomes Scale for Coronary Heart Disease, Stanford Attendance Scale and Perceived Health Ability Scale were used to investigate them, and analyzed the influencing factors of patients' health-related work efficiency. Results: The health-related work efficiency score of young and middle-aged patients with coronary heart disease was 16.10±5.22, 246 cases (47.5%) had high work efficiency loss, and 272 cases (52.5%) had low work efficiency loss. Binary Logistic regression model showed that age, time to return to work, working time, the number of children, the level of N-Terminal Pro-Brain Natriuretic Peptide, number of implanted stents, self-reported outcome and perceived health ability were influencing factors of health-related work efficiency in young and middle-aged patients with coronary heart disease (P<0.05). Conclusion: The health-related work efficiency level of young and middle-aged patients returning to work with coronary heart disease needs to be improved. Medical staff should pay attention to patients' perceived health and outcome reporting, and formulate interventions, so as to reduce their health-related work efficiency loss.

Key words: young and middle-aged; coronary heart disease; returning to work; efficiency; recover