Kinking or occlusion of the transfer tubing from the patient breathing circuit to the scavenging system interface can result in which of the following?

Kinking or occlusion of the transfer tubing from the patient breathing circuit to the scavenging system interface can result in which of the following?

• A. Barotrauma
• B. Hypoventilation
• C. Hypoxia
• D. Hyperventilation

Answer: (A)

When the transfer tubing from the patient’s breathing circuit to the scavenging interface is kinked or occluded, gas expelled from the lungs cannot escape effectively. This backpressure builds up in the circuit during ventilation, raising airway pressures. The resulting overdistension of alveoli can cause rupture and air leakage into the pleural space or mediastinum, leading to barotrauma. Hypoventilation or hypoxia would require changes in ventilation or oxygen delivery beyond the immediate rise in circuit pressure, and hyperventilation involves excessive CO2 removal, which doesn’t fit this scenario. Thus, the immediate risk from a kinked transfer tube is barotrauma.

When the transfer tubing from the patient’s breathing circuit to the scavenging interface is kinked or occluded, gas expelled from the lungs cannot escape effectively. This backpressure builds up in the circuit during ventilation, raising airway pressures. The resulting overdistension of alveoli can cause rupture and air leakage into the pleural space or mediastinum, leading to barotrauma. Hypoventilation or hypoxia would require changes in ventilation or oxygen delivery beyond the immediate rise in circuit pressure, and hyperventilation involves excessive CO2 removal, which doesn’t fit this scenario. Thus, the immediate risk from a kinked transfer tube is barotrauma.