Anatomy of a ventilator! (PART I)

Anatomy of a ventilator! (PART I)

Brief Physiological notion
Let’s talk about ventilators! Hey guys! We are talking about “ventilators” to meet the respiratory function, not for us to “fan” the head and give us a sense of cool ambient air! (Conditioned ventilators! lol)

A important difference is what is routinely called “respirator” to a “ventilator”.

Many people, including doctors inaccurately using the word “respirator”. It is true that it is a commonly used word, but very badly used! The act of breathing is also misused. Respiration is a metabolic process of cells and we breathe the oxygen through the blood mixed with the oxygen receptor cells are mitochondria (the real respiratory systems). It is what is known as aerobic metabolism (with oxygen).

So what do we do?, It is very simple … we do is an act of introducing air into the lungs and that is called “venting.” The movement of gas from outside to inside the lungs is called ventilation. This act comes into contact ambient air (of which 21% is oxygen) enters through the mouth into the trachea and then the following tubes called bronchi (right and left) that act as a tube that moves air, coming to rest of the bronchi and then into the bronchioles that are thinner and thus progressively until the last portions called terminal bronchioles where the alveoli begin to develop (such as sponges) which is the location of the lungs in touch the blood through capillaries in contact with them.
The alveoli are the smallest portion of the lung and the most important because it will condition the gas exchange (oxygen or O2 over the blood and removing carbon dioxide or CO2 exhaled air).

It is true that in the end it comes to respiratory failure, because the definition is purely after hearing the results of blood gas analysis (drop in oxygen to the critical level of less than 60 mmHg and ventilation when exceeding the barrier the 50 mmHg) as we said before.
When this happens, depending on the situation according to our actions will address the two mechanisms.
In the earlier case of choking (or asphyxia box) rather than to oxygen (which is worthless) ventilation needs to be fixed because the fundamental problem is that no air. For that first perform a Heimlich maneuver, or if not possible, try to remove the object blocking the airway (in this case the glottis) with fingers in the mouth when the patient is in apnea (otherwise you could bite the fingers) or a tracheostomy in place of the accident (for suitable equipment).
Once you open the airway if the patient moves even try to get the chest to air (air) oxygen will (always in an amount greater than the ambient air being restated is 21%).

There are many causes of respiratory failure and respiratory finally (and this site is not the place to explain) but if it is serious enough that the patient may lose his life and the oxygen is not remedied, the patient should help gold intubation -trachea (the trachea from the mouth).
Important notice for people:
The following pics is of our production (intubation) and pray that those who have qualms to see real images, to refrain from him.
Thank you!

We introduce the laryngoscope blade through the mouth, displacing the side of the tongue from right to left to let us see the mouth cavity.

Time of displacement of the tongue

Once displaced tongue can observe the pharynx and the folds of the tonsils

The direct vision of the epiglottis (where the vocal cords and trachea at the bottom) leads us to introduce the ETT (endotracheal tube) and save the patient’s life.

The epiglottis is a cartilaginous structure that is part of the cartilaginous skeleton of the larynx. It also marks the boundary between the oropharynx and laryngopharynx.

The glottis is the narrowest portion of the light laryngeal space is limited by the vocal cords, arytenoid vocal portion and the area interarytenoid.

Introduction of the tracheal tube is made through the center hole or glottis.

Endotracheal tube position.

Final placement of the tracheal tube and the patient is intubated

Well … we’ve reached the point where once intubated the patient is connected to a life support machine called “mechanical ventilation” or poorly named “artificial respirator”


Herrero S. “Anatomy of a ventilator! (Part I)”  Journal of Pearls in Intensive Care Medicine 2011. Volumen 1. Nº 15

Copiar enlace – Copy Link:

J Pearls Int Care Med © 2011 ·Todos los derechos reservados. All rights reserved

10 responses

  1. Spot on with this write-up, I actually suppose this web site wants rather more consideration. Ill most likely be once more to learn rather more, thanks for that info.

  2. Heya i am for the primary time here. I came across this board and I to find It really useful & it helped me out a lot. I hope to provide something back and aid others such as you aided me.

  3. My blog is to help novice traders to trade the stock market.

    I recently added CommentLuv (via IntenseDebate) to my blog because I think
    it is a win-win relation. Feel free to stop by and leave
    me a comment.

  4. It is appropriate time to make some plans for the future and it is time to be happy.
    I’ve read this post and if I could I desire to suggest you few interesting things or tips. Perhaps you can write next articles referring to this article. I wish to read even more things about it!

  5. Congratulations on having one of the most sophisticated blogs Ive come across in some time! Its just extraordinary just how much you are able to take away from some thing just due to how visually lovely it can be. Youve put together a great blog space –great graphics, videos, layout. This is undoubtedly a must-see blog!

  6. Simply want to say your article is as surprising.
    The clarity for your publish is simply great and i could assume you’re an expert on this subject. Well along with your permission allow me to snatch your RSS feed to stay updated with forthcoming post. Thanks 1,000,000 and please carry on the rewarding work.

  7. Woah! I’m really loving the template/theme of this website. It’s simple,
    yet effective. A lot of times it’s tough to get that “perfect balance” between superb usability and visual appearance. I must say you have done a fantastic job with this. Also, the blog loads very fast for me on Firefox. Superb Blog!

    Prescription Swimming Goggles

Journal of Pearls in Intensive Care Medicine - Perlas en Medicina Intensiva

Herrero-Varon's MD Editors. Asturias (Gijón) and Houston (TX, USA). Languaje EN/ES 2011-2016

%d bloggers like this: