[Prognostic Value of Hyperuricemia in Patients With Atrial Fibrillation and Heart Failure With Preserved Ejection Fraction].

Patients with permanent atrial fibrillation in comparison with cardiovascular patients without arrhythmia were found to have higher level of serum uric acid irrespectively of background of arterial hypertension and/or ischemic heart disease. Serum uric acid was shown to be an independent predictor of chronic heart failure exacerbation in atrial fibrillation patients.

[Problems in the diagnosis and clinical assessment of atrial dissociation (a report on 2 cases and review of the literature)].

At registration of ECG esophageal leads in two patients with ischemic heart disease an extra atrial rhythm was recorded missed by standard ECG. Similar cases from the literature are considered.