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Acute histologic changes in the tracheobronchial tree associated with different suction catheter insertion

C Kleiber¹, N Krutzfield, E F Rose

¹Pediatric Nursing Division, University of Iowa Hospitals and Clinics, Iowa City 52242.

Heart & Lung : the Journal of Critical Care

|January 1, 1988

Summary

Inserting a suction catheter until resistance is met in kittens causes significant airway tissue damage. The application of suction did not influence the extent of this damage, highlighting procedural risks.

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Area of Science:

Veterinary Medicine
Pediatric Critical Care
Anesthesiology

Background:

Endotracheal intubation is a common procedure in veterinary medicine and critical care.
Suctioning is often necessary to maintain airway patency.
The potential for airway trauma during catheter insertion requires careful evaluation.

Purpose of the Study:

To compare the effects of two different endotracheal suction catheter insertion techniques on kitten airway tissues.
To determine if the application of suction influences the degree of tissue damage.

Main Methods:

Anesthetized, intubated kittens (n=10) were divided into two groups.
Group 1: Catheter inserted to a predetermined distance.
Group 2: Catheter inserted until resistance was met. Withdrawal was performed with or without suction in both groups.

Main Results:

All kittens (10/10) in the 'predetermined distance' groups exhibited normal airway tissues.
Nine out of ten kittens in the 'resistance' groups showed denuded epithelium and inflammation.
Suction application did not significantly alter the observed tissue damage.

Conclusions:

Inserting an endotracheal suction catheter until resistance is encountered significantly increases the risk of airway trauma in kittens.
The degree of insertion resistance, not the application of suction, is the primary factor contributing to tissue damage.
These findings underscore the importance of careful catheter handling during endotracheal suctioning in pediatric patients.