Optimism mitigated impacts of pre-operative depression and anxiety on post-operative distress in cardiac patients.

Both anxiety and depression are comorbid mortality risks in middle-aged and older patients with heart diseases. Open-heart surgery (OHS), a life-altering procedure, can induce psychological distress that impedes postoperative recovery. Extensive research has shown the health benefit of optimism, an indicator of hope-a Character Strength in positive psychology. It predicts low mortality in cardiovascular disease-the number one killer of all Americans. Few studies, however, have explored whether that optimism mitigates the negative impact of preoperative depression and anxiety on postoperative general psychological distress. This interdisciplinary clinical study evaluated a hypothetical model of these relationships prior to and 1 month following OHS in 311 U.S. patients using a three-wave survey. Structural equation modeling (SEM) was performed to predict post-OHS general psychological distress. Optimism was indicated by two subscales in the Life Orientation Test (LOT). Based on the definition, general psychological distress was indicated by low symptom levels of somatization, depression, and anxiety as measured by the SCL-90 subscales. The final solution demonstrated a good fit. Optimism alleviates the negative effects of preoperative depression and anxiety, as indicators of poor mental health, on postoperative distress. Both older age and female gender were positively and directly associated with higher levels of post-OHS symptoms. The finding supports the beneficial role of optimism in mitigating the damage of poor mental health in the postoperative outcome of cardiac patients. The desirable function of character strength hope suggests that health providers should be attentive to and enhance inner strength for reducing the distress of cardiac patients in the postoperative recovery month.