The prevalence of atrial septal aneurysm in patients with cerebral ischaemia and normal carotid arteries was 27.7%, higher than the control group. Atrial septal aneurysm was frequently associated with patent foramen ovale. In patients less than 45 years old, atrial septal aneurysm was the only potential cardiac source of embolism detected with transoesophageal echocardiography.

Type A behaviour pattern and acute life stress affect the development and spontaneous conversion of atrial fibrillation. Patients with acute stress showed the highest probability of spontaneous conversion followed by patients with Type A behaviour. Other socio-economic factors affect spontaneous conversion and recurrences of lone atrial fibrillation to a lesser extent.

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