It’s often referred to as wasted ventilation, as the inhaled air is not involved in the exchange of oxygen and carbon dioxide. c) there will be no effect on either the partial pressure or diffusion rate of gases. by John Landry, BS, RRT Dead space ventilation is defined as the volume of ventilated air that does not participate in gas exchange. b) the partial pressure of carbon dioxide in the alveoli will increase. Under these conditions a) the partial pressure of oxygen in the alveoli will increase. The anatomical dead space is the total volume of the conducting airways from the nose or mouth to the terminal. When she exercises, which of the following scenarios would be most efficient for increasing her oxygen delivery to the lungs a.) increase respiratory rate to 20 breaths/min but have no change in tidal volume b.
leading to a decrease in the rate and depth of pulmonary ventilation, producing shallow, slow breathing. Assume that whole-body metabolic rate (VO2) stays constant, but the alveolar ventilation rate (VA) is decreased. The physiological dead space is the anatomical dead space plus alveolar dead space. Assume a normal female has a resting tidal volume of 400 mL, a respiratory rate of 13 breaths/min, and a anatomic dead space of 125 mL. Total dead space is the anatomical dead space and alveolar dead space together, and represents all of the air in the respiratory system that is not being used in the gas exchange process. The product of tidal volume and the breathing frequency is equivalent to the a) pulmonary ventilation rate (VE) b) alveolar ventilation rate (VA) c) oxygen consumption rate (VO2) d) dead space ventilation 2.
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