Meconium Aspiration Syndrome (MAS)

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Meconium Aspiration Syndrome (MAS)

- > MC in post term babies , Rare in Preterms.

- > Because of Perinatal hypoxia

• Glottis open
• Peristalsis Stimulated
• Anal Sphincter relax - thus pass Meconium (and as glottis is open - so aspiration)

Meconium effects :

1. Physically - 

• Block bronchus - thereore cause collapse
• Ball Valve mechanism - Air leaks - Pneumothorax , Pneumomediastinum.

2. Chemically - irritant

3. Biologically - Good culture medium - therefore risk of sepsis.


Prevention : By Obstetric care

Previously Management (if Meconium stain) - IntraPartum Suction (as head is born) - 1st Mouth , then Nose. {Not done now}

Now Management :

1. Do TABC ( Thermoneutral environment and ensure Airway, Breathing and Circulation )
2. Check if Vigorous or Not : if Not - then Do ET suction.

Vigorous baby :

1. Respiratory effort - Good - cry

2. Muscle tone - Good 

3. Heart rate > 100 bpm

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