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Ciliated epithelium transports mucus bacteria and dust towards the throat where it is either swallowed or expelled through the mouth.
Dead space vs shunt. Boop and james. This article will describe how dead space is different from shunt. Distinguishing between true shunt and reduced v q can also be performed noninvasively by simultaneously plotting sao2 versus fio2.
Presurgical functional mappingandrew c. 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. The shunt fraction is the percentage of blood put out by the heart that is not completely oxygenated.
The difference in pathophysiology between a shunt and dead space is essentially why oxygen therapy works wonders in some patients but has a minimal effect on others. But how hypoxemia reacts to oxygen therapy is different based on whether the patient has a shunt or dead space. Anatomic dead space no gas exchange warms and humidifies air.
Papanicolaou roozbeh rezaie shalini narayana marina kilintari asim f. The two problems associated with a vq mismatch. A true shunt shifts the curve downward whereas venous admixture low v q shifts the curve rightward.
It will help you understand how you can use these concepts to care for your patient.
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