Asthma: Introduction

by Carlo Raj, MD

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    00:02 Let's take a look at obstructive lung diseases and our first true pathology here, under obstructive, we'll take a look at asthma.

    00:09 Keep in mind that much of this information in terms of its pathogenesis comes from immunology.

    00:14 So our strict focus here is going to be our patient, are they going to present, and then ultimately, tie this in with the other obstructive diseases in which often times may be confused with emphysema and chronic bronchitis.

    00:29 Let's begin.

    00:31 Asthma, inflammatory disease, small airway.

    00:35 Inflammation to airway, that leads to what? Mucous production. Stop there.

    00:39 I told you at some point in time that we will take a look at the definition here versus definition of chronic bronchitis.

    00:46 Why do I bring chronic bronchitis into play? Because of mucous production.

    00:50 Chronic bronchitis however, represents the fact that your patient is presenting with 3 months of continuous productive cough over a 2 year span.

    01:03 Bronchospasm, leading to a reversible obstructive lung disease.

    01:07 Well, it depends.

    01:08 But for the most part, think of it as being reversible.

    01:11 Why? Well, if you're able to relieve your patient of whatever exposure that the patient might be having resulting in the asthma type attack, maybe perhaps you are able to reverse it.

    01:24 That's an important definition there.

    01:26 Bronchodilators come to mind.

    01:28 Usually and typically seen in young patients.

    01:31 Many asthma patients usually end up having or have had exposure to allergen.

    01:38 This puts you in the realm of something like atopic which is majority of your patients with asthma or they've had a viral, URI stands for upper respiratory tract infections.

    01:51 Now all these can be exacerbated with having asthma.

    01:54 Now, what's going on here actually? The airways of most patients with asthma, or normal at paced line.

    02:01 During flares which are usually triggered by allergens.

    02:03 Increased smooth muscle tone narrowing at the airways are now problems for the patients.

    02:08 Increased inflammation and edema cause further narrowing of airways and may result to mucus plugs.

    02:14 These factors also result in restricted exhalation.

    About the Lecture

    The lecture Asthma: Introduction by Carlo Raj, MD is from the course Obstructive Lung Disease.

    Author of lecture Asthma: Introduction

     Carlo Raj, MD

    Carlo Raj, MD

    Customer reviews

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    Did not go in depth as needed
    By Candace P. on 26. April 2021 for Asthma: Introduction

    It did not provide insight into the actual pathological process leading to asthma. (i.e. the inflammatory mediators involved, the early vs the late phase of Asthma etc.)

    Explains asthma as it is
    By bertha s. on 18. August 2019 for Asthma: Introduction

    I would recommend this lecture. this intro to asthma did exactly that. it gave a presentation of an actual ER patient with asthma.

    Embarrassing for lecturio
    By Patrick C. on 11. April 2018 for Asthma: Introduction

    Horrible. Whats even more horrible is that there are previous comments written months ago and Lecturio could care less to correct them. Great job Lecturio in keeping your paying customers happy. Waste of money.

    Impossible to understand
    By Manraj J. on 23. February 2018 for Asthma: Introduction

    The lecture is incredibly incoherent, lacks sentence structure and doesn't really make sense