[Hyperkalemia and its electrocardiographic consequences in professional cyclists at the end of a bicycle race].
The plasma potassium levels were measured in 15 cyclists during the "Vuelta Ciclista al País Valenciano" (700 km, 6 days), both at the start and at the end of the last stage. Plasma potassium levels increased from 4.3 +/- 1.9 mmol/l (resting) to 7.3 +/- 3.2 mmol/l at the end of the stage. The increase in plasma potassium levels was related to changes in other plasma electrolyte levels and it led to electrocardiographic T wave and QRS abnormalities.
Departamento de Fisiología, Facultad de Medicina, Universidad de Extremadura, Badajoz, España.
P
P
Mena
M
M
Maynar
J M
JM
Moreno
J M
JM
Gutiérrez
J E
JE
Campillo
D001639:Bicarbonates / Q000097:blood; D001642:Bicycling / Q000502:physiology*; D004562:Electrocardiography; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006947:Hyperkalemia / Q000097:blood / Q000209:etiology / Q000503:physiopathology*; D012964:Sodium / Q000097:blood
D001639:Bicarbonates; D012964:Sodium