Related Experiment Video
Updated: May 31, 2026

Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs
Published on: December 22, 2023
The effect of transoesophageal echocardiography probe insertion on tracheal cuff pressure
1Department of Anesthesiology, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan.
Abstract:
Increased tracheal cuff pressure during mechanical ventilation is associated with reduced mucosal blood flow and ischaemia, as well as postoperative sore throat. We assessed the potential effects of transoesophageal echocardiography probe insertion on the tracheal cuff pressure in patients undergoing cardiac surgery. Using a manometer, the cuff pressure of a high-volume, low-pressure tracheal tube (inner diameter 7.0 mm for women and 7.5 mm for men) was adjusted to 25-30 cm H(2)O before blind insertion of a transoesophageal echocardiography probe. The pressure changes were then recorded for 1 min. After probe insertion, the mean (SD) intra-cuff pressure increased from 27.7 (1.5) to 36.2 (6.4) cm H(2)O (p < 0.001) and was > 35 cm H(2)0 in 17/38 patients (45%). Our results suggest that transoesophageal echocardiography probe insertion may increase the tracheal cuff pressure more than that is generally recommended and therefore the latter should be routinely monitored under such circumstances.
Related Concept Videos
Endoscopic Studies II: Thoracocentesis
Description
Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...
Assessment of blood pressure in brachial artery(two-step method)
Pressure Relationships in Thoracic Cavity
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs during...
Tracheostomy: Procedure and Tubes
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...

