Epidemiological studies demonstrate the relevance of cardiovascular diseases for health policies and medical care, especially coronary heart diseases and myocardial infarction. Research has shown that a significant proportion of patients undergoing coronary angiography suffer from clinically relevant mental stress. The aim of this study is to investigate to what extent the psychological state of cardiology patients changes in short- and mid-term periods after coronary angiography has been performed. The study design is naturalistic, longitudinal and comparative about consecutively admitted patients undergoing coronary angiography ( = 419; consenting patients fulfilling inclusion criteria = 68) at four measurement points: before and after angiography and 6 weeks and 6 months after discharge. The statistical analysis includes paired -tests, chi-square tests, effect sizes and random effects regression models. The sample was representative of the target population. The prevalence of risk factors were: 84% heart attack, 31% diabetes and 84% hypertension. There were no angiographic pathological findings in 12% of the sample. The neuroticism levels of the sample was higher than in the general population. There were almost no pre-post differences for depression, anxiety, psychological well-being, self-efficacy, resilience or locus of control. At the mid-term, well-being and anxiety decreased and internal locus of control increased. Neuroticism was negatively and extraversion and openness were positively associated with mental state and resources. The sample showed persistent adverse subsyndromal depressivity. At the mid-term, patients realised that their prognosis also depends on their own behaviour (internal attribution). Special psychosomatic attention should be given to people with subsyndromal depression, higher emotional instability and those with angina pectoris symptoms displaying normal coronary angiography.

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