[Electrolyte changes during and after voluntary hyperventilation].
Paresthesia and tetanic finger cramps during hyperventilation-induced respiratory alkalosis are believed to derive from a pH-dependent decrease of ionized serum calcium. In the study reported here, ionized serum calcium, total calcium and total protein were measured during a three-minute hyperventilation period in ten volunteers. During hyperventilation finger paresthesias appeared in all probands without proof of any significant change in ionized serum calcium (1.26 +/- 0.05 mmol/l at the end of the three-minute hyperventilation period). Total protein increased as a consequence of hyperventilation-induced transient hemo-concentration. Paresthesias and tetanic finger cramps during the three-minute hyperventilation could not be related to changes of ionized serum calcium; however the other electrolytes, i.e. sodium, magnesium, potassium, chloride, phosphate and bicarbonate, showed, with the exception of sodium, significant changes.
Stadler
G
G
Medizinische Poliklinik, Abteilung für Pneumologie, Universitätsspital Zürich.
Steurer
J
J
Dür
P
P
Binswanger
U
U
Vetter
W
W
D000328:Adult; D001798:Blood Proteins / Q000032:analysis; D002118:Calcium / Q000097:blood; D004573:Electrolytes / Q000097:blood*; D005260:Female; D006801:Humans; D006985:Hyperventilation / Q000097:blood*; D008297:Male; D010292:Paresthesia / Q000378:metabolism; D013746:Tetany / Q000378:metabolism
D001798:Blood Proteins; D004573:Electrolytes; D002118:Calcium