Abstract
Aim. The aim of this study was to analyze the concept of heart risk perception from healthcare staff perspective using hybrid method of concept analysis.
Background. In the discussion of behavior, awareness of risk factors for cardiovascular disease is very important in helping individuals to make informed decisions about continuing certain behaviors that increase the risk of the disease, but what matters more is the perception of a person at risk of a disease that affects his or her health functions.
Method. Hybrid model of concept analysis was used to clarify the meaning of perception of risk of heart disease. Three phases of a hybrid concept analysis include theoretical, fieldwork, and final analysis. In theoretical phase, different databases including PubMed, CINAHL, Science Direct, Google Scholar, SID and Magiran were searched for related articles published from 1990 to 2018). The search keywords were perception of risk; heart disease in titles and abstracts of the papers. In the fieldwork phase, semi-structured in -depth interviews were conducted with 18 nurses who were selected by purposive sampling. In next step, by combining the two previous stages the final analysis was performed.
Findings. The combination of theoretical and fieldwork findings resulted in definition of heart risk perception from healthcare staff perspective: “Understanding the risk of heart disease is a form of acquiring awareness of the risk of heart disease that is influenced by beliefs, values, culture and attitudes of individuals, and it stimulates learning and changing self-care behaviors for efficacy in promoting heart health and avoiding risk factors.”
Conclusion. The results of this study will help to clarify the concept of perception of risk of heart disease among healthcare system staff. This clarification may lead to offering comprehensive view and better understanding for use in the research and practice.

Abstract
Aim. This review study was conducted with the aim of highlighting the importance of a preoperative preventive approach in the recovery of patients undergoing coronary artery bypass surgery.
Background. With the increase in the number of patients who are candidated for heart surgery, improving the health status before the operation is of great importance to optimize the results after the operation. This review has been conducted with the aim of evaluating the evidence related to the pre-rehabilitation of patients undergoing coronary artery bypass surgery.
Method. The present literature review was conducted by searching out library resources and databases, Scopus, Chochrane Library, Magiran, SID, PubMed, Up-to-date, OVID, CINAHL, and Web of Science with the keywords, coronary artery bypass surgery, pre-rehabilitation, cardiovascular disease and their Persian equivalents without time limit. From a total of 104 articles, 63 full texts articles entered the review stage, of which 17 articles entered the literature review.
Findings. The findings indicate the favorable effects of pre-rehabilitation on improving the quality of life and preventing complications in the early postoperative period. Pre-rehabilitation programs should adopt multifaceted approaches including nutrition, exercise, and anxiety reduction to improve patient resilience in the preoperative period. The pre-operative period is a critical opportunity to implement pre-rehabilitation interventions for vulnerable patients awaiting cardiac surgery.
Conclusion. Cardiac pre-rehabilitation includes a wide range of preventive interventions that can be taught by nurses to patients undergoing cardiac surgery. Pre-rehabilitation requires an interdisciplinary approach, because it suggests a change from the current model of health care and transformation from one-dimensional care to interdisciplinary care, which can be an effective tool for the medical and nursing system in timely identification of physical and mental disorders in initial preoperative assessment, preoperative education and management, as well as prevention of postoperative complications.