LARYNGEAL MASK (LMA)

advertisement
Dr. Rupak Bhattarai
Taishan Medical University
 It is being increasingly used in place of a face mask or
tracheal tubes during administration of an anesthetic,
to facilitate ventilation.
 Also used in patients with difficult intubation.
 THE CUFF
 THE APERTURE BARS
 THE AIRWAY TUBE
 THE CONNECTOR
 THE INFLATION LINE
 THE PILOT BALOON
 THE VALVE
Generally four types of LMA
used these days:
 The re-usable LMA
 The disposable LMA
 The proseal LMA which
has an orifice through
which naso -gastric tube
can be inserted
 Fastrach LMA that
facilitates intubating
patients with difficult
airways.
 An LMA consists of a
wide bore tube whose
proximal end connects to
a breathing circuit and
the distal end is attached
to an elliptical cuff that
can be inflated through a
pilot tube.
 The deflated cuff is lubricated
and inserted blindly into the
hypopharynx so that once
inflated ,the cuff forms a
pressure seal around the
entrance to the larynx.
 This requires the anesthetic
depths slightly greater than the
required for the insertion of an
oral airway.
 The shaft of an LMA can be
secured with tape.
 The re-usable LMA , which can
be used after autoclave is made
of silicon rubber and is
available in many sizes.
INTERNAL VIEW
OF PLACEMENT
OF LMA
No 1 : For infant with weight
less than 6.5 kg.
No2 : Child with weight 6.520 kg.
No 2.5 : Child with weight
20-30 kg.
No 3 : Small adult with
weight greater than 30 kg.
No 4 :Normal adult with
weight less than 70 kg.
No 5 : Large adult with
weight greater than 70 kg.
 No 1 : 2-4 ml
 No 2: Up to 10 ml
 No 2.5: Up to 15 ml
 No 3 : Up to 20 ml
 No 4: Up to 30 ml
 No 5 : Up to 30 ml
 Pharyngeal pathology (e.g abscess).
 Pharyngeal obstruction .
 Full stomach patient.
 Pregnancy.
Although LMA is clearly not a substitue for tracheal
intubation but it has proven particularly helpful as a
temporizing measure in patients with difficult airways
because of its easy of insertion and relatively high
success rate (95-99%).
Download
Related flashcards

Obstetrics

46 cards

Tocolytics

13 cards

Obstetricians

12 cards

Create Flashcards