| (Mehrdad et al., 2016) | Factors affect return to work after CABG | Iran 226 | Prospective on phone or in hospital after 6 month | SF-36 | Early returned to work affect HRQOL positively | Socioeconomic, occupational, psychological, and medical factors (normal troponin T level, shorter pump time in surgery, normal mean (MAP) before the surgery and higher serum Mg levels |
| (Namazi, Hosseni, & Mohammadi, 2014) | HRQoL before and after valve surgery | Iran 102 | Cross sectional Before and 2 month after | Mac New HRQoL questionnaire | HRQoL scores in patients with value diseases improve significantly after surgery | Gender, education level, type of valve dysfunction and income |
| (Neto et al., 2015) | Evaluate the impact of cardiac surgery on QOL of elderly | Brazil 44 | Analytical prospective cohort Before and after 3 and 6 months by phone | Sf-36 | Significant improvement in all domains of HRQOL after surgery, with no significant change in physical domain in the follow up | Age, marital status, income, smoking, alcohol |
| (Peric et al., 2015) | QOL 6 months after CABG and related to age | Belgrade, Serbia 243 | Prospective before, and after 6 months | Nottingham health profile questionnaire | Improvement of QOL was found in older patients. Changes in QOL showed a significant correlation among the patients’ age in the sections of physical (r = 0.18, p = 0.008), social (r = 0.17, p = 0.01) and energy (r = 0.21, p = 0.002) | Age, gender, marital status, HTN, smoking, DM, hyper cholesterol, obesity, stress, physical activity |
| (Peric et al., 2017) | Predictors of HRQOL after 2 years of CABG | Belgrade, Serbia 208 | Prospective after 2 years | Nottingham health profile questionnaire | HRQOL improved | Serious angina, absence of hereditary load, male sex, absence of DM |
| (Salem, 2013) | To compare HRQOL before and after cardiac surgery, and the related risk factors | Egypt 250 | Prospective Pre-1 and 6 months post on phone | SF-36 | HRQOL improved in all domains after 6 months of surgery | Age, gender, education level, marital status, smoking |
| (Usta et al., 2013) | Compare the HRQOL in pts after cardiac re surgery (on pump vs. off pump | Germany 40 pts | prospective | SF-36 3 years follow up | Same HRQOL in both group after 3 years | Similar HRQOL in relation to differences blood loss, surgery duration ICU stay, Mechanical ventilation, Blood transfusion |