Estratto
Dispnea e ridotta capacità all’esercizio sono i sintomi e i segni caratteristici delle malattie polmonari e cardiache. La dispnea si manifesta a riposo solo quando la riserva dell’apparato respiratorio e di quello cardiovascolare si è ridotta sensibilmente, di solito più del 70%. Le metodiche impiegate per valutare la funzione di questi apparati a riposo (es. prove di funzionalità respiratoria, emogasanalisi, elettrocardiogramma, ecocardiografia) non riflettono in maniera adeguata la loro capacità di riserva. Il test da sforzo cardiopolmonare (TCP), ovvero la misurazione dello scambio dei gas polmonari (consumo di ossigeno, V′O2; produzione di anidride carbonica, V′CO2), della ventilazione polmonare (V′E) e della frequenza cardiaca (FC) in corso di esercizio controllato (ergometro), consente di valutare con grande precisione tali riserve. Fornisce inoltre utili informazioni sulle vie metaboliche utilizzate durante l’esercizio.
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Palange, P. (2006). Il test da sforzo cardiopolmonare nello studio delle malattie. In: Malattie dell’apparato respiratorio. Springer, Milano. https://doi.org/10.1007/978-88-470-0467-2_10
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DOI: https://doi.org/10.1007/978-88-470-0467-2_10
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