![]() Shunt or pulmonary shunt is one of the two contributors to the ventilation-perfusion (V/Q) mismatch. – Comparison of Key Differences Key TermsĪlveolar Dead Space, Alveoli, Capillary Shunt, Dead Space, Gas Exchange, Perfusion, Shunt ![]() What is the Difference Between Shunt and Dead Space What are the Similarities Between Shunt and Dead SpaceĤ. – Definition, Characteristics, Importanceģ. Moreover, they are examples of the ventilation-perfusion (V/Q) mismatch. Shunt and dead space are two conditions of lungs, resulting in impaired gas exchange. Pulmonary embolism (PE) is an example of increased dead space resulted in decreasing perfusion relative to ventilation. For example, in pneumonia, the area of the alveoli is well perfused although it is not well ventilated, leading to the shunt. Circle system resistance is increased by unidirectional valves, the absorber, and high respiratory rates and tidal volumes.The main difference between the shunt and dead space is that shunt is the pathological condition in which the alveoli are perfused but not ventilated, whereas dead space is the physiological condition in which the alveoli are ventilated but not perfused. ![]() ![]() ![]() Resistance to breathing-Resistance is always high with turbulent flow, hence narrow diameter tubing and orifices, sharp bends, increasing circuit length, and eliminating unnecessary valves that produce this should be avoided in the apparatus. Hence, to avoid hypercarbia in the face of an acute increase in dead space, a patient must increase minute ventilation. Increasing the dead space increases rebreathing of carbon dioxide. The elbow, the heat and moisture exchanger (HME), and the D-lite sensor contribute to real apparatus dead space where part of V T does not participate in gas exchange. Dead space-In the circle systems, the tubing (mechanical) dead space ends at the point where inspired and expired gas streams meet at the Y-connector, resulting in loss of tidal volume ( V T) from the compliance of the distensible corrugated inspiratory and expiratory tubing and from gas compression. ![]()
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