Estratto
La respirazione normale include circa 12 atti respiratori al minuto, ognuno dei quali di circa 0,500 l. Pertanto il volume di aria che transita nei polmoni al minuto (ventilazione minuto) è di circa: 12 × 0,500 = 6 l min. A sua volta, il volume inspirato è uguale all’incirca a quello espirato (volume corrente). Poiché, in tal caso, il flusso inspiratorio è uguale a − 0,5 l sec−1 e quello espiratorio a + 0.5 l sec−1, il flusso definitivo di un ciclo completo è pari a zero.
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Terzano, C., Allegra, L. (2006). Surfattante polmonare. In: Malattie dell’apparato respiratorio. Springer, Milano. https://doi.org/10.1007/978-88-470-0467-2_2
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