Shunt vs. dead space2/13/2024 ![]() ![]() It can cause alveoli to fill with fluid or pus, making it difficult for you to breathe. Pneumonia is a lung infection that can be caused by bacteria, a virus, or fungus. ![]() Symptoms can vary from mild to severe and may include: air pollutants, such as cigarette smoke.Asthma can be triggered by a number of things, including common allergens, such as: It’s a common condition that affects approximately 1 in 13 people in the United States.Įxperts aren’t sure what causes some people to develop asthma, but environmental factors and genetics appear to play a role. Long-term exposure to chemical irritants can also cause COPD.ĬOPD increases your risk for other conditions affecting the lungs and heart, such as lung cancer and heart disease.Īsthma is a condition that causes your airways to swell and narrow. The most common cause of COPD is cigarette smoke. In 2019, it caused 3.23 million deaths worldwide.Įmphysema and chronic bronchitis are the most common conditions associated with COPD. Chronic obstructive pulmonary disease (COPD)ĬOPD is a chronic inflammatory lung disease that obstructs airflow to your lungs. Uworld says this is v/q mismatch but that gets me confused cause why wouldn't a vent defect give v/q mismatch.Anything that affects your body’s ability to deliver enough oxygen to your blood can cause a V/Q mismatch. That's why you will see a drop in PaO2 in PE(minor). So this one is tougher but: Let's assume you have a well ventilated alveoli, when there is poor oxygen content, vasculature will constrict and redistribute this blood to other alveolar however it will overwhelm the capacity of extracting oxygen into blood - so adding oxygen will help. Dead space/physiologic dead space/V/Q mismatch to inifinty.I remember total pulm shunt as if pulm art partial pressure = pulm vein partial pressure, shunted, basically just bypassed lungs. These alveolar are already extracting maximum oxygen, adding more would not help. Lets assume this kid have some alveoli that are working. pulm shunting - ventilation defect V/Q 0, perfusion intact.So this is my understanding of the topic and I might be wrong so please correct me if thats the case: ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |