![]() Some apparatus dead space may actually reduce total dead space, as an ETT bypasses the majority of anatomical dead space of the patient (nasopharynx).ĭead space from the patient. From chapter 1 we know that this dead space has a volume of 150 mL, so the amount of air reaching the alveoli in the respiratory zone is our tidal volume. Defines the standard lung volumes and understands their measurement. ![]() Types of Dead Spaceĭead space from equipment, such as tubes ventilator circuitry. Determining alveolar ventilation Tidal volume (Vt), 400 mL, 600 mL Physiological dead space volume (Vd), 100 mL, 285 mL Respiratory rate (RR). Tidal Volume (TV) dead space (V D) x f Alveolar Ventilation Resp. Glomerular Filtration and Tubular Functionĭead space is the proportion of minute ventilation which does not participate in gas exchange. By measuring the PCO2 in the communicating alveoli (which is the same as that in the arterial blood) and the PCO2 in the expired air, one can use the Bohr Equation to compute the 'diluting,' non-CO2 containing volume, the physiologic dead space. Pulmonary function tests and alveolar ventilation 5. If alveolar ventilation is 4200 mL/min respiratory frequency is 12 breaths per minute, and tidal volume is 500 mL. Functional Anatomy and Control of Blood Flow
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