Document Detail


A hydrodynamic study of pleural drainage systems: some practical consequences.
MedLine Citation:
PMID:  15947339     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: A pleural drainage system must be capable of efficiently evacuating the air or fluids from the pleural cavity so that adequate lung reexpansion can take place. The air flow and negative pressure of the system will depend on the particular design of each model. This experimental study analyzes the specifications and performance of the pleural drainage systems currently on the market. METHODS: Thirteen models of pleural drainage systems connected to wall suction were examined. The models were classified into the following three groups: dry systems; wet systems; and single-chamber systems. We determined the ambient air flow and the negative pressure generated according to the suction level. The components of each model are also described. RESULTS: Under normal conditions, dry (except for the Sentinel Seal; Sherwood Medical; Tullamore, Ireland), wet, and single-chamber systems reach similar air flow rates (17 to 30, 24 to 27, and 22 to 28 L/min, respectively). With higher wall suction levels, wet systems increase the air flow (26 to 49 L/min) but the negative pressure becomes unstable because of the water loss phenomenon, dry systems increase the air flow (29 to 50 L/min) without modifying the regulator pressure, and single-chamber systems also raise the air flow (45 to 51 L/min) but increase the negative pressure. When there is an air leak, dry systems (except for the Sentinel Seal) lose less negative pressure than the other systems. CONCLUSIONS: The functioning of these systems can be optimized only by applying a suitable wall suction level adjusted to each case. Although the three types of systems are capable of evacuating adequate air flow rates, the negative pressure and the capacity to maintain it in the presence of an air leak are different in each system. Being fitted with valves and not water compartments makes the dry systems the safest and the ideal for use when the patient has to be moved.
Authors:
Gerardo Manzanet; Antonio Vela; Ricardo Corell; Ramón Morón; Rogelio Calderón; Consuelo Suelves
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chest     Volume:  127     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-06-10     Completed Date:  2005-07-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2211-21     Citation Subset:  AIM; IM    
Affiliation:
Department of General Surgery, Hospital La Plana de Vila-real (Castellón), Carretera de Vila-real a Borriana Km 05, 12540 Vila-real, Spain. manzanet_ger@gva.es
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MeSH Terms
Descriptor/Qualifier:
Biomechanics*
Equipment Design
Equipment Safety
Humans
Pneumothorax / therapy
Pressure
Sensitivity and Specificity
Suction / instrumentation*,  methods
Systems Theory

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


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