Serum potassium levels inversely correlate with D-dimer in patients with acute-onset atrial fibrillation.

An inverse and highly significant correlation was found between serum potassium and D-dimer (r = −0.21; p < 0.001), even after adjustments for age and sex (beta coefficient −94.8; p = 0.001).

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The remarkable changes that have occurred in dietary habits throughout past centuries are mostly characterized by a shift towards a sodium-rich diet (i.e., a potassium-to-sodium intake ratio usually < 0.4), and have also been associated with a marked trend towards sodium overload and potassium depletion 17 with significant adverse cardiovascular effects 18 .

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