Document Detail


The effect of inner tube placement on resistance and work of breathing through tracheostomy tubes: a bench test.
MedLine Citation:
PMID:  23278349     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
To reduce the risk of tracheostomy tube blockage, a removable inner tube can be used. However, this will reduce the size of the lumen and will increase airflow resistance and work of breathing. The magnitude of this increase in workload is unknown. We undertook a bench test to measure the effect. A lung model was developed to 'breathe' through the tracheostomy tube. We created pressure-volume curves from which we calculated work of breathing with and without an inner tube using 6-10 mm tracheostomy tubes over a range of respiratory rates and tidal volumes. The inner tube increased the resistive work of breathing by an average factor of 2.2. The extra work of breathing imposed easily exceeded the normal total work of breathing. Our results will aid a risk-benefit analysis when deciding whether to use inner tubes. Selecting a larger tracheostomy tube is likely to aid weaning from mechanical ventilation.
Authors:
A Carter; S J Fletcher; R Tuffin
Related Documents :
9422299 - Effects of cisatracurium on cerebral and cardiovascular hemodynamics in patients with s...
3127119 - Cardiac performance in pediatric near-drowning.
17413999 - Anesthetic considerations of selective intra-arterial nicardipine injection for intracr...
16625689 - Intracranial pressure and biochemical indicators of brain damage: follow-up study.
21524299 - Peripheral and central arterial pressure and its relationship to vascular target organ ...
17132549 - Assessment of intra-cranial pressure after severe traumatic brain injury by transcrania...
23832099 - Hydration measurement by bioimpedance spectroscopy and blood pressure management in chi...
14528399 - Echocardiographic assessment of preload conditions does not help at the neonatal intens...
7943849 - Levosimendan (or-1259), a myofilament calcium sensitizer, enhances myocardial contracti...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-20
Journal Detail:
Title:  Anaesthesia     Volume:  -     ISSN:  1365-2044     ISO Abbreviation:  Anaesthesia     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2013-1-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370524     Medline TA:  Anaesthesia     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Anaesthesia © 2012 The Association of Anaesthetists of Great Britain and Ireland.
Affiliation:
Anaesthesia and Intensive Care Medicine, Mid Yorkshire Hospitals, Wakefield, UK.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Medicago truncatula DNF2 is a PI-PLC-XD-containing protein required for bacteroid persistence and pr...
Next Document:  Increased oxidative stress may lead to impaired adaptive cytoprotection in the gastric mucosa of por...