few years agoAnesthesia Equipment's & Ventilation Questions ( Part 1 )

table of contents

1. ANSWERS :

 17- All of the following are suitable anesthetic circuits for both controlled and assisted ventilation except:

• Mapleson A
• Mapleson B and C
• Mapleson D
• Mapleson E

18- True about Bain circuit: (PGI May 10, 09, DNB 06)

• Mapleson type B
• Mapleson type D
• Can be used for spontaneous respiration
• Can be used for controlled ventilation
• Coaxial

19- In Magill circuit, airflow is:

• 1/2 of minute volume
• Equal to minute volume
• 2 x minute volume
• 3 x minute volume

20- True about oxygen concentrator:

• Zeolite activation
• Delivers O2
• Requires power supply
• Gives O2 at 100%

21- All  increase ↑ed CO2 absorption in circuit except

•  Resistance in circuit
• High flow
• Small granule size
• Medium granule size
• Chanelling

22- All are constituents of sodalime except:

• Ca(OH)2
• Ba(OH)2
• Silica
• Moisture

23- Water is used for hardening in:

• Sodalime
• Baralyme
• Both
• None

24- Which of the following are used to protect airways:

• LMA
• Endotracheal tube
• Ryles tube
• Combitube
• Sengstaken Blackmore tube
• Bag and Mask 

25- Inner diameter of adult male endotracheal tube is:

• 4 mm
• 6 mm
• 9 mm
• 2 mm

26- Color of oxygen cylinder is:

• Black with white collar
• Blue with white collar
• Yellow with white collar
• White

27- Which is not a safety system:

• Pin index safety system
• Link 25 proportion limited control system
• O2 flowmeter control system
• Air flow meter system

28- As per ISO, color of N2O cylinder is:

• Blue
• Black
• White
• Red

29- Dead space is increased by all except:

• Anticholinergic drugs
• Standing
• Hyperextension of neck
• Endotracheal intubation

30- Which one of the following devices provides fixed performance oxygen therapy:

• Nasal cannula
• Venturi mask
• O2
• by T-piece
• Edinburgh masker

31- All of the following are examples of definite airways, except:

• Nasotracheal tube
• Orotracheal tube
• Laryngeal mask airway
• Cricothyroidotomy

32- True about laryngeal mask airway:

• More reliable than face mask
• Prevents aspiration
• Alternative to endotracheal tube
• Does not require laryngoscope and visualization
• Can be used in full stomach

33- Laryngeal mask airway (LMA) is used for:

• Maintenance of the airway 
• Facilitating laryngeal surgery
• Prevention of aspiration
• Removing oral secretions

34- The laryngeal mask airway used for securing the airway of a patient in all of the following conditions except:

• In a difficult intubation 
• In cardiopulmonary resuscitation
• In a child undergoing an elective/routine eye surgery
• In a patient with a large tumor in the oral cavity

35- Laryngeal mask airway is indicated in:

• To prevent aspiration of stomach contents
• Short surgical procedure
• Where endotracheal intubation is contraindicated
• Difficult airway
• Facilitate endotracheal intubation

36- True about LMA (laryngeal mark airway):

• Available in 8 sizes
• Intubation can be done
• Size 1 for neonates
• Size 3 for adults
• Full protection from aspiration

37- High airway resistance is seen in:

• Respiratory bronchiole
• Terminal bronchiole
• Intermediate bronchiole
• Main bronchus

38- During laryngoscopy and endotracheal intubation which of the maneuver is not performed:

• Flexion of the neck
• Extension of head at the atlanto-occipital joint
• The laryngoscope is lifted upwards levering over the upper incisors
• In a straight blade laryngoscope, the epiglottis is lifted by the tip

39- Which of the following is not an indication for endotracheal intubation:

• Maintenance of a patent airway 
• To provide positive pressure ventilation
• Pulmonary toilet
• Pneumothorax

40- Malampati grading is for:

• Mobility of cervical spine
• Mobility of atlantoaxial joint
• Assessment of free rotation of neck before intubation
• Inspection of oral cavity before intubation

41- True about endotracheal cuff:

• Low volume, high pressure
• Low volume, low pressure
• High volume, low pressure
• High volume, high pressure
• Equal volume and pressure

42- Plan C of anesthetic airway management is:

• Standard laryngoscopy and intubation 
• Catheter guided intubation
• Insertion of laryngeal mask airway and fiberoptic bronchoscopy
• Cancel the surgery or perform tracheostomy

43- Sellick maneuver is used to prevent:

• Alveolar collapse
• Hypertension
• Aspiration of gastric contents
• Bradycardia
• Glaucoma

44- Size of endotracheal tube in < 6 years old child is:

• Age +3.5/3.5 
• Age +2.5/2.5
• Age + 4.5/4.5
• Age –4.5/4.5

45- In infant (full term), diameter (mm) and length (cm) of ETT used are:

• 3.5, 16
• 7, 12
• 3.5, 12
• 7, 10

46- Merits of nasotracheal intubation is:

• Good oral hygiene 
• Less infection
• Less muscosal damage and bleeding
• More movement or displacement of endotracheal tube

47- A 40-year-old man who met with a motor vehicle catastrophe came to the casualty hospital in an hour with severe maxillofacial trauma. His pulse rate was 120/min, BP was 100/70 mm Hg, SpO2 - 80% with oxygen. What would be the immediate management:

• Nasotracheal intubation
• Orotracheal intubation
• Intravenous fluid
• Tracheostomy

48- True about laryngoscopy and intubation:

• Hypertension
• Tachycardia
• ↑ICT
• ↑ Intraocular pressure
• ↓Lower esophageal sphincter tone

49- True about endotracheal intubation (during the process) is all except:

• Hypertension and tachycardia
• Raised IOT
• Raised ICT
• Arrhythmias
• Increased oesophageal peristalsis

50- In venturi mask, maximum O2 concentration attained is:

• 90%
• 100%
• 60%
• 80% Ref: Morgan 5/e p1282

51- Indications of tracheostomy are:

• Flail chest
• Head injury
• Tetanus
• Cardiac tamponade
• Foreign body

52- Side effects of oxygen therapy are all except:

• Absorption atelactasis 
• Increased pulmonary compliance
• Decreased vital capacity
• Endothelial damage

53- In a patient with fixed respiratory obstruction, helium is used along with oxygen instead of plain oxygen because :

• It increases the absorption of oxygen
• It decreases turbulence 
• It decreases the dead space
• For analgesia

54- True about Heliox:

• Helium is an inert gas
• Less viscous than air
• Higher density than air
• Reduces work of breathing
• Mixture of He and O2

55- Properties of Helium

• Atomic no 2
• Viscosity is zero
• Used in COPD
• All

56- Which of the following produces the least damage to blood elements:

• Disc oxygenator
• Membrane oxygenator
• Bubble oxygenator
• Screen oxygenator

57- In volume-cycled ventilation the inspiratory flow rate is set at:

• 140-160 L/min
• 110-130 L/min
• 60-100 L/min
• 30-50 L/min

58- The following modes of ventilation may be used for weaning off patients from mechanical ventilation except:

• Controlled mechanical ventilation
• Synchronized intermittent mandatory ventilation
• Pressure support ventilation (PSV)
• Assist-control ventilation (ACV)

59- Sodalime circuit is not used in anesthesia with:

• Enflurane
• Isoflurane
• Trichloroethylene
• Methoxyflurane

60- Advantage of LMA are all except:

• Easy to insert
• Aspiration is prevented
• Can be used in cervical trauma
• Does not require muscle relaxant

61- Blind nasal intubation is not indicated in:

• Ankylosis of temporomandibular join
• Laryngoscopy
• CSF otorrhea
• Basal skull fracture

62- Armoured endotracheal tube is used in:

• Pediatric surgery 
• Neurosurgery
• Cardiac surgery
• Thoracic surgery

63- Mapelson system used in children is:

• Type A
• Type B
• Type C
• Ayers T tube

64- Heimlich valve is used for drainage of:

• Pneumothorax
• Hemothorax
• Empyema
• Malignant pleural effusion

65- Sodalime is used in closed anesthesia circuit:

• To absorb carbon dioxide
• To reduce pollution
• To absorb moisture in the circuit
• To filter the anesthetic gases

66- During laryngoscopy, the tip of Macintosh laryngoscope blade should lie in the:

• Larynx
• Trachea
• Pharynx
• Vallecula

67- Contraindication to nasotracheal intubation is

• Basal skull fracture
• Severe otitis media
• Labyrinthitis
• Pituitary microadenoma

68- Laryngeal mask airway size 2 is recommended for

• <6.5 kg
•  6.5–20 kg
• 20–30 kg
• 30–50 kg

69- Anesthesia breathing circuit recommended for spontaneous breathing is:

• Mapleson A
• Mapleson B
• Mapleson C
• Mapleson D

70- With regard to laryngeal trauma associated with the placement of an endotracheal tube (ETT):

• It is most likely to occur at the thyroid cartilage
• Trauma to the vocal cords usually involves the right recurrent laryngeal nerve
• Vocal cord paralysis is caused by injury to the anterior branch of the recurrent laryngeal nerve
• Postoperative hoarseness greater than one week is likely to represent transient nerve injury

71- Which of the following can lower EEG amplitude:

• N2O
• Ketamine
• Hypothermia
• Early hypoxia

ANSWERS :

17. a. Mapleson A                           18. b, c, d and e                              19. b. Equal to minute

20. a, b and c                                    21. c. Small granule                        22. b. Ba(OH)2

23. b. Baralyme                               24. a, b, d and f                                25. c. 9 mm

26. a. Black with white                  27. d. Air flow meter                       28. a. Blue

29. d. Endotracheal                       30. b. Venturi mask                          31. c. Laryngeal mask

32. a, c and d                                  33. a. Maintenance of the               34. d. In a patient

35. d and e                                      36. a, b and c                                    37. d. Main Broncho

38. c. The laryngoscope                39. d. Pneumothorax                      40. d. Inspection of oral

41. c. High-volume                        42. c. Insertion of                            43. c. Aspiration of…

44. a. Age +3.5/3.5                        45. c. 3.5, 12                                    46. a. Good oral…

47. b.Orotracheal intubation      48. a, b, c and d                               49. e. Increased

50. c. 60%                                       51. a, b, c and e                               52. b. Increased pulmonary

53. b. It decreases                         54. a, d and e                                  55. d. All

56. b. Membrane oxygenator    57. d. 30-50 L/min                           58. a. Controlled mechanical

59. c. Trichloroethylene              60. b. Aspiration is                          61. d. Basal skull fracture

62. b. Neurosurgery                     63. d. Ayers T tube                         64. a. Pneumothorax

65. a. To absorb carbon              66. d. Vallecula                               67. a. Basal skull fracture

68. b. 6.5—20 kg                          69. b. Mapleson B                          70. d. Postoperative

71. c. Hypothermia

Edit This Article