In regards to endotracheal suctionning protocol, how far can we insert the French catheter? I can't find the answer anywhere in the protocol book, companion document or BLS standards.

In the latest version of the OBHG Companion Document, Appendix A, there is a delegated procedure reference for this procedure. The direction is to. “Support the endotracheal tube (ETT) or tracheostomy tube with one hand and then grasp the catheter and advance the catheter slowly until there is a cough reflex or resistance is met. Do not suction while advancing the catheter. Withdraw 0.5 cm, activate suctioning and gently pull back slowly until the suction catheter is fully retracted (10 seconds or less). Re-oxygenate the patient between suctioning events.” 

Airway/Breathing,Endotracheal and Tracheostomy Suctioning and Reinsertion

Endotracheal suctioning, Procedure, Reference, Suctioning

OBHG Companion Document for the Advanced Life Support Patient Care Standards Version 5.4 June 2025 

https://ontariobasehospitalgroup.ca/wp-content/uploads/2025/06/ALS-PCS-v5.4-Companion-Document.pdf