Hi, this is Tom, and in this episode I'm going to be going through Laringo Malaysia,

and you can find notes at zero to finals.com and in the zero to finals pediatrics book,

and you can find flashcards and questions at members.0.0 tofinals.com.

And at the end of the episode, we'll go through some questions so you can test yourself on what you just heard. So let's jump straight in. Laringo

Malaysia occurs where the supraglotic larynx, the part of the larynx above the vocal cords,

is structured in a way that causes partial airway obstruction. It causes the larynx to flop across the airway when the infant

breathes in, which causes chronic stridor during inspiration. Strider is a harsh whistling sound.

Loringomalacia occurs in infants with symptoms peaking at around six months of age.

Let's talk about the structural changes.

There are two ary epiglotic folds at the entrance of the larynx in the neck.

The ary-epiglotic folds run between the epiglottis and the aritenoid cartilages on either side of the airway.

Their role is to prevent food or fluids from entering the larynx

and the trachea. In laryngo Malaysia, the ariapaglotic folds are shortened, which pulls

on the epiglottis and changes the shape of the epiglottis to a characteristic omega shape.

In laryngomalacia, the tissue surrounding the superglotic larynx is softer and has less tone,

allowing it to flop across the airway.

During inspiration, the air moving through the larynx to the lungs

pulls the floppy tissue across the airway to partially occlude it.

This partial airway obstruction generates the whistling sound or stridore.

Let's go through the presentation.

Loringo Malaysia presents with intermittent in-spiritry stridor, which is more prominent

when feeding, upset, lying on the back or during upper respiratory tract infections.

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