Hypoventilation Explained Clearly by MedCram.com
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- čas přidán 19. 11. 2012
- Understand hypoventilation with clear illustrations from Dr. Seheult of www.medcram.com/?Y...
This is video 3 of the 5 main causes of hypoxemia: hypoventilation.
Other videos in this series explain high altitude, pulmonary diffusion, shunting, and ventilation perfusion mismatch (VQ mismatch).
Speaker: Roger Seheult, MD
Clinical and Exam Preparation Instructor
Board Certified in Internal Medicine, Pulmonary Disease, Critical Care, and Sleep Medicine.
MedCram: Medical topics explained clearly including: Asthma, COPD, Acute Renal Failure, Mechanical Ventilation, Oxygen Hemoglobin Dissociation Curve, Hypertension, Shock, Diabetic Ketoacidosis (DKA), Medical Acid Base, VQ Mismatch, Hyponatremia, Liver Function Tests, Pulmonary Function Tests (PFTs), Adrenal Gland, Pneumonia Treatment, any many others. New topics are often added weekly- please subscribe to help support MedCram and become notified when new videos have been uploaded.
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Recommended Audience: Health care professionals and medical students: including physicians, nurse practitioners, physician assistants, nurses, respiratory therapists, EMT and paramedics, and many others. Review for USMLE, MCAT, PANCE, NCLEX, NAPLEX, NDBE, RN, RT, MD, DO, PA, NP school and board examinations.
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Please note: MedCram medical videos, medical lectures, medical illustrations, and medical animations are for medical educational and exam preparation purposes, and not intended to replace recommendations by your health care provider.
Blessings!!! your video lectures are heaven sent, a note of gratitude from a future RCP, NPS grad 2017
Just want to say I'm your biggest fan, everything is explain very well. Thank you so much.
very explicit...great job!
Thank u so much.God bless you.
More than thanks
Brilliant
thank you for the clear explanation.
Thank you so much!!!!!
Quite educative
I understand!! Thank you.
thank you hugely
Easy to understand
thank you!
How would you get a very low A-a gradient? What would it mean? The equation suggests that you would need to somehow raise PaO2 to the same level as PAO2 or lower PAO2 to the same level as PaO2 both of which I'm not sure are possible independent of each other.
I'm wondering if another cause for the hypoventilation may be from a central apnea? Such as when you have the patient with a head injury, central space occupying lesion, etc.
Shouldn't you treat with ventilation so that you can get the CO2 levels down?
Thanks ! By the way, what program you use to make this handwritten presentation ?
Excellent tutorial ....could you add a Glaucoma tutorial please?
Could you please explain why hypoventilation is not considered a type of a V/Q mismatch (low V/Q) if there is lowered alveolar ventilation (V) with normal perfusion (Q) in this condition ? (e.g. alveolar ventilation 2,5 l/min and perfusion 5 l/min -> V/Q = 0,5) This is the thing I cannot understand so i'd be grateful for some clarification on this matter.
i know its been six months and i havent watched the video yet, but what im assuming is that it is because hypoventilation happens in each and every alveolus, but in the V/Q mismatch, some pulmonary capillaries get more O2 or some alveoli get more CO2, but NOT ALL. Hopefully that helps and hopefully my point makes sense :)
In our lungs we have normal V(ventilation) Trachea dead space/Q perfusion Thesbian veins, mismatch 0.8. when disease happen this ration change. Such as shunt Q or dead space V. so think how did the disease affect the diffusion of CO2 and O2. Pulmonary embolism (blockage in the artery)- blocks the Q no perfusion, so you will result in a High V dead space. hope it help.
So I was on methadone for 16 years out of my life, not no more thankfully. I'm pretty sure that over time this head paved the pathways in my body for me to constantly breathe wrong. I think that it made it go to movements for my body to breathe wrong cuz it was doing it for so long. Also I would find myself trying to correct my breath constantly because I didn't feel like I was breathing enough. This is the first time I've heard anybody mentioned narcotics in a relationship to us and I honestly think with opioid epidemic that would have a lot of people suffering from this problem
So what causes it
Why would you say that hypoventilation responds well to oxygen? If anything, the supplemental oxygen is masking the hypoventilation because if you didn't do the ABG and just looked at the pulse oximeter, you may think the patient is doing okay when meanwhile their CO2 levels are dangerously high. You do mention all this so it just seems conflicting as supplemental oxygen isn't going to fix a ventilation problem.
+Matthew L you are right. The hypoxemia from hypoventilation easily responds to oxygen. Oxygen does not fix hypoventilation. Thanks!
Gotcha thanks! I think I may have just confused myself a bit watching the video. Great content btw.