Respiratory Failures: Hypoxemia & Hypercapnia

by Carlo Raj, MD

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    It is time for us to put everything together. Up until this point, we have clearly elucidated the various modes of techniques and tests. There will be few more, as we walk through, but we are now getting into the heart of respiratory pathology. Respiratory failure, in general, what is it? You're focusing upon oxygen and the lack of your body being able to properly ventilate. Now, we have done this prior and the way that we’ll continue with timeline becomes very important for us. If it’s acute, well, this is occurring within hours, which means that you are not able to properly ventilate your lung and nor can you properly get oxygen into your arterial side. And by definition, when we have respiratory failure, as I said, your focus should be the inability to properly oxygenate your arterial blood. If it’s chronic, occurs over months to years. You’re thinking about chronic diseases and ultimately, please understand that your bicarb will also very much be affected. By that, we mean the following. If you have chronic issues, then at some point, understand that the body might actually become accustomed. Remember from physiology. To increase levels of carbon dioxide in a chronic time frame. And so, therefore, clinically, at times, what you’ll do is to then figure out that your patient might have a chronic disease by looking at an increase in serum bicarb because the carbon dioxide is elevated chronically for long periods of time. Hence, you know that one of the things that you avoid doing in a patient who has now become accustomed to low oxygen tension and if you were to measure this and then give the patient oxygen, then please understand that the patient is going to then further depress respiration. And so, therefore, this then...

    About the Lecture

    The lecture Respiratory Failures: Hypoxemia & Hypercapnia by Carlo Raj, MD is from the course Respiratory Failures. It contains the following chapters:

    • Respiratory Failure
    • Acute Hypoxemic
    • Acute Hypercapnic
    • Treatment
    • Medical Ventilation

    Author of lecture Respiratory Failures: Hypoxemia & Hypercapnia

     Carlo Raj, MD

    Carlo Raj, MD

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