Inspired air is brought to body temperature, which is similar to hemoglobin, thereby improving O 2 O_2 O 2 uptake. However, there are a lot of advantages that this air space gives.Ĭ O 2 CO_2 C O 2 is preserved, which allows the pH regulators to use bicarbonate to buffer the blood and interstitium potential. The presence of this space means that the amount of air that enters the lungs cannot exceed a certain amount. This dead space as it is known as is necessary because it prevents the lungs from collapsing. Due to the way that this process is carried out, there is a portion of air that remains in the lungs. Positive pressure ventilation (i.e.Mammals take breaths by the process of inhalation and exhalation.Neck extension and jaw protrusion (can increase it twofold).General anesthesia – multifactorial, including loss of skeletal muscle tone and bronchoconstrictor tone.The ratio of physiologic dead space to tidal volume is usually about 1/3. Alveolar dead space is the volume of gas within unperfused alveoli (and thus not participating in gas exchange either) it is usually negligible in the healthy, awake patient. Anatomic dead space is the volume of gas within the conducting zone (as opposed to the transitional and respiratory zones) and includes the trachea, bronchus, bronchioles, and terminal bronchioles it is approximately 2 mL/kg in the upright position. Physiologic or total dead space is the sum of anatomic dead space and alveolar dead space. Dead space is the volume of a breath that does not participate in gas exchange.
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