common instruments encountered in anesthesia; may be of help for your mbbs exams

1. Aneshtesia instruments

2. Guedel’s oropharyngeal airway
estimating appropriate
oropharyngeal airway
sizes: the distances
between the maxillary
incisors to the angle of
the mandible, and that
from the corner of the
mouth to the angle of
the mandible.

3. Nasal airway

5. Why nasal airway inserted vertically
and not in curved fashion?
• To protect injury against the highly vascular
nasal turbinates and also the cribiform plate
• So, inserted vertically straight along the floor
of nasal cavity

6. Face masks

9. AMBU bag

10. What is the advantage of self-inflating bag?

11. laryngoscope
(contains
Batteries)

14. Mccoy (movable tip)

15. Video laryngoscope

16. Uses of laryngoscope
Excision of benign lesions of larynx

17. Classical LMA

18. LMA sizes

19. I -gel

20. Advantages of I-gel
• Provides better seal than classical
• Already inflated, Non-inflatable cuff
• Integral bite block
• Buccal cavity stabilizer, so doesn’t rotate
inside the mouth
• Gastric channel (drain tube) for draining

21. Supreme LMA =
proseal LMA + Bite block

22. Intubating LMA (LMA fasttrach)

23. Cuffed Endotracheal tube PVC type
Bevel 45 degree in oral tubes and 30 degree in nasal tubes

25. ET tube size
• (Age of patient)/ 4 + 4

27. • Anatomical dead space reduced by almost 50%

28. Cuffed tube can cause pressure necrosis if used for long time (> 2 weeks)

29. Cuffed ET tube Flexometallic type
• Has metal spiral rings on inside that make it flexible and non-kinkable
• Use:
1. for head and neck surgeries where acute extension/flexion of neck is
required
2. For surgeries which require changing patient position from supine to
prone

30. Diasdv of flexometallic tube
• Has got metal springs on inside, when the patient
bites on the tube, the shape of the tube gets
deformed and when the biting force is resolved,
the tube cannot get back to its normal shape
• So,
– Bite block should be kept
– After finishing the surgery, the flexometallic tube
should be replaced by PVC tube if prolonged
intubation is required

31. Red rubber endotracheal tube
• Obsolete now

33. Look on the tubes: types
• Oral nasal
• Oral
• nasal

34. Double lumen tube

36. Combitube

39. HME filter

40. Tracheostomy

42. Cannula and their sizes

43. Subarachnoid Block
• Quincke = dura cutting = cutting edge
• Whitacre, Sprotte = dura separating= no cutting edge (pencil tip)

46. Epidural needle
• Needle markings present = 1 cm black and
white stripes

48. Why is epidural needle calibrated with
markings?
• To know how much length of catheter to
insert into the epidural needle

49. Walking epidural
• When low dose epidural is given, the
sensation is lost without affecting motor
movements of limb

51. Pulse oximeter
• Measures:
1. spO2
2. Pulse rate
3. Perfusion index
4. Plethysmograph
– detects arrhythmia
– Gives idea about respiratory effort

56. Anesthesia Machine

57. Flow sensor / CO2 sensor

58. ECG electrode

61. IV cannula parts

62. IV Drip Set