Hyperventilation in normal subjects. A clinical, gas-analytic and EMG study.
Electroencephalogr Clin Neurophysiol
; 97(3): 159-63, 1995 Jun.
Article
em En
| MEDLINE
| ID: mdl-7607104
ABSTRACT
Clinical (paresthesiae and Trousseau's sign), EMG, blood biochemical (lactic acid and total Ca2+) and gas-analytic (pH, PCO2, PO2, HCO3) changes were studied during and after 5 min voluntary hyperventilation (HV) in 15 normal subjects. Paresthesiae and spontaneous motor activity were common manifestations (87% and 67% respectively) in our test. They were significantly related only to changes in pH, PCO2 and PO2, with paresthesiae arising earlier and at milder gas-analytic changes than motor activity. Paresthesiae and motor activity induced by HV cannot be used as reliable indicators of pathology. Their presence simply reflects the degree of the blood gas-analytic changes (pH, PCO2 and PO2) which therefore should be carefully monitored before drawing any conclusion from an HV test.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hiperventilação
Limite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Electroencephalogr Clin Neurophysiol
Ano de publicação:
1995
Tipo de documento:
Article
País de afiliação:
Itália