ENDOTRACHEAL INTUBATION

PRESENTED BY : R.PRASANTH MSC(N) 2ND YEAR

DEFINITION

It is a procedure of passing of an endotracheal tube into trachea through the nose or mouth.

PURPOSE

It is performed to establish and maintain a patent airway, facilitate oxygenation and ventilation, reduce the risk of aspiration, and assist with the clearance of secretions.

INDICATIONSAND

CONTRAINDICATIONS

ADVANTAGES

DISADVANTAGES

Need advanced training to properly perform procedure

Bypasses the nares function of warming and filtering the air

Increased incidence of trauma due to neck manipulation when spinal cord injury is suspected

May increase respiratory resistance

Improper placement

EQUIPMENTS

LARYNGOSCOPE : handle & blade

Macintosh (curved) and Miller (straight) blade

Adult : Macintosh blade

small children : Miller blade

LARYNGOSCOPIC BLADE:

Mc coy blade Miller blade

Macintosh blade

ENDOTRACHEAL TUBE

TYPES OF ETTs:1) Portex tubes:

Semirigid, with little tendency to kink. Most commonly used.

2) Rubber tubes:

Soft, easily kinked.

3) Reinforced tubes:

- Cuffed or non cuffed. Reinforced with wire to prevent kinking.

4) Special tubes:

Double lumen (Robertshaw

ENDOTRACHEAL TUBE: (ETT)

Male : ID 8.0 mms

Female : ID 7.5 mms

New born - 3 mths : ID 3.0 mms

3-9 months : ID 3.5 mms

9-18 months : ID 4.0 mms

2- 6 yrs : ID = (Age/3) + 3.5

> 6 yrs : ID = (Age/4) + 4.5

1) Size of ETT : internal diameter (ID)

2) MATERIAL : Red rubber or PVC

3) ETT CUFF

High volume Low pressure cuff

Low volume High pressure cuff

ETT CUFF• cuff inflating system consisting of:

• valve, balloon, inflating tube & cuff.

• Uncuffed tubes used in children to minimise pressure injury

• Purpose of cuff is:

• seal between tube & trachea

• Protect from aspiration of blood, mucus or vomitus.

4) BEVEL5) MURPHY’S EYE

6) Depth of insertion:

Midtrachea or below vocal cord~2 cm

Adult Male ~23 cmFemale ~21 cm

ChildrenOral ETT = (Age/2) + 12 (cm)Nasal ETT = (Age/2) + 15 (cm)

OTHER EQUIPMENTS:

STYLET(malleabl

e)

FACE MASK & SELF INFLATING BAG

MAGILL FORCEPS

LOCAL ANAESTHETIC SPRAY

Syringe

Lubricating jelly

Dynaplast/ tape to strap endotracheal tube

Monitoring success of intubation:

Stethoscope

Endtidal - CO2

Pulse oximeter

PREOXYGENATION

PROCEDURE

• ventilate with 100 % oxygen for approximately 3 min

• Position bed / table height:bring the patient's head to naval height

SNIFFING POSITIONExtension at atlanto-occipital joint

Flexion at lower cervical spine

Neck flexion is maintained by placing a few

inches of padding behind the head

Sniffing position

STEPS OF OROENDOTRACHEAL

INTUBATION

BAG MASK VENTILATION

•Thumb and index finger of left hand in the shape of a “C” press down

•The other 3 fingers at the inferior ramus of the mandible and lift the mandible up (jaw thrust) “E”

C

E

HOLDING A LARYNGOSCOPE

Hold the handle ofthe laryngoscope with your left hand

OPEN MOUTH TECHNIQUES

Hyper-extension technique (no touch technique) Cross fingers techniques

INTUBATION TECHNIQUE

introduce the blade into the right side of the patient's mouth

move the blade posteriorly and toward the midline, sweeping the tongue to the left and keeping it away from the visual path with the flange of the blade

ensure the lower lip is not being pinched by the lower incisors and laryngoscope blade

advance the laryngoscope until the epiglottis is in view

INSERTING THE BLADE

INTUBATION TECHNIQUE

lift the laryngoscope upward and forward

insert the ETT from the right angle of mouth with its concave curve facing downward and to the right side of the patient

maneuver the endotracheal tube into the larynx, midway between the cricoid cartilage and the sternal angle

LIFTING UP A LARYNGOSCOPE:

• Pull the blade forward and upward using firm but Steady pressure without rotating the wrist

• Avoid leaning on the upper teeth with the blade

EXPOSURE OF THE LARYNX:

•In most situations vocal cords should become visible • If not, exert gentle pressure over the cricoid area to help bring them into view

BURP Maneuver:

ON THYROID CARTILAGE

•Backward:• against the cervical Vertebrae

•Upward

•Right: lateral pressure to the right

HOW TO CONFIRM THE CORRECT PLACEMENT OF ETT?

Primary Confirmation

Secondary Confirmation

PRIMARY CONFIRMATION :By Physical Exam

Confirm tube placement immediately

Listen over the epigastrium and observe the chest wall for movement

If stomach gurgling and no chest wall expansion –

esophagus intubated: deflate the cuff and remove ET tube

Reattempt intubation after re -oxygenation

PRIMARY CONFIRMATION: CONTD.

If chest wall rises and stomach not gurgling,

perform 5-point auscultation

If still doubt, use laryngoscope to see the tube passing through the vocal cords (best)

Secure the tube

Look for moisture condensation on the inside of the tracheal tube

(not 100%: false +ve with esophageal intubations)

SECONDARY CONFIRMATION

End-Tidal CO2 Detectors

Commercial device that reacts with a color change to CO2 exhaled from the lungs:

Qualitative detection device indicates exhaled CO2 indicates proper tracheal tube placement

Absence of CO2 (unless prolonged CPR), indicates esophageal intubation

False +ve: Distended stomach, carbonated beverages

False - ve: Low or no blood flow states

Endotracheal tube(ET) trachea, endotracheal tube (arrows) and

location of carina (^).

AFTER CARE OF THE PATIENT

PROCEDURE FOR REMOVAL

THANK YOU