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Concernant le tracé spirométrique suivant, obtenu grâce à un spiromètre de Benedict classique, équipé d'un bac à chaux sodée, quelle sont les 3 propositions exactes ?A. L'ordonnée est un volume d'air, exprimé en litre par minute.B. Les augmentations de volume successives en fonction du temps, qui vont dessiner des "pics", représentent le volume mobilisé pendant l'inspiration du sujet.C. A partir de ce tracé, il est possible de mesurer la fréquence respiratoire (nombre de cycles respiratoires par minute) et le volume d'air mobilisé par cycle respiratoire (volume courant).D. A partir de C., on peut calculer le débit ventilatoire du sujet VE, en L/min.E. Ce tracé dérive avec le temps vers le haut. Vous en déduisez qu'il existe une fuite sur ce circuit qui devrait être un circuit fermé, seule explication plausible.

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