➡️ 1–5.
45. What is the pin index for Nitrous Oxide?
➡️ 3–5.
46. What is the pin index for Carbon Dioxide?
➡️ 1–6.
47. What is the pin index for Entonox?
➡️ 7.
48. What is the pin index for Nitrogen?
➡️ 1–4.
IMPORTANT EXAM PEARLS
49. Open suctioning is a __ procedure.
➡️ Sterile procedure.
50. Closed suctioning is a __ procedure.
➡️ Clean procedure.
51. Which site should be suctioned first?
➡️ Endotracheal Tube (ETT).
52. Which is the most contaminated suction site?
➡️ Oral cavity.
53. What is the main indication for suctioning?
➡️ Retained airway secretions.
54. What is the most common complication of suctioning?
➡️ Hypoxia.
55. What can excessive suction pressure cause?
➡️ Mucosal trauma and bleeding.
56. What can prolonged suctioning cause?
➡️ Hypoxemia, bradycardia, and arrhythmias.
57. Can an open suction catheter be reused?
➡️ No, it is single-use only.
58. Can a closed suction catheter be reused?
➡️ Yes, according to protocol (usually up to 72 hours).
59. Why is the ETT cuff inflated after intubation?
➡️ To prevent air leak and aspiration.
60. What is the first confirmation after ETT insertion?
➡️ Bilateral chest rise and equal breath sounds (ETCO₂ confirmation is the gold standard).
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