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Colour & pin index of anesthetic gases

Gas

Pin index

Color Of Cylinder

Air

1&5

 

O2

2&5

Body black & white shoulder

N20

3&5

Blue

CO2

1&6

Grey

Cyclopropane

3&6

Orange

Entonox

7

Blue body + white shoulders

Halothane

-

Amber

Ethylene

-

Red

Anesthesia Breathing System

a. Mapleson B system    -   more efficient during controlled ventilation

b. Mapleson C system    -   Water's to-and-fro

c. Mapleson D system -   Bain co-axial system is commonly used modification, used for controlled ventilation

                                                                               

d. Mapleson E system -   fresh gas inlet is nearer the face mask 1ETT:

                                     i. widely used in pediatric patient

                                     ii. dentical with Ayre's T- piece system with no reservoir bag

e. Mapleson F system -   same as above + reservoir bag

 [Jackson Ree added a double-ended bag to the end of the reservoir tubing] most popular & widely used in pediatric patients

 Boyle's anesthetic machine

  1. Continuous flow type of machine to provide inhalation anesthesia, also used for artificial ventilation.
  2. It is equipped with 2O2 cylinder, 2N2O cylinder.
  3. Cylinders are made up of Molybdenum steel ( NOS in each) to withstand with high pressures.
 




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