Document Detail

Surfactant deactivation in a pediatric model induces hypovolemia and fluid shift to the extravascular lung compartment.
MedLine Citation:
PMID:  23043489     Owner:  NLM     Status:  Publisher    
BACKGROUND: Surfactant deficiency is the pivotal abnormality in Neonatal and Acute Respiratory Distress Syndrome. Surfactant deactivation can produce hypoxemia, loss of lung compliance, and pulmonary edema, but its circulatory consequences are less understood. OBJECTIVE: To describe the sequential hemodynamic changes and pulmonary edema formation after surfactant deactivation in piglets. METHODS: Surfactant deactivation was induced by tracheal instillation of polysorbate 20 in 15 anesthetized and mechanically ventilated Large White piglets. The hemodynamic consequences of surfactant deactivation were assessed at 30, 120, and 240 min by transpulmonary thermodilution and traditional methods. RESULTS: Surfactant deactivation caused hypoxemia, reduced lung compliance, and progressively increased lung water content (P < 0.01). Early hypovolemia was observed, with reductions of the global end-diastolic volume and stroke volume (P < 0.05). Reduced cardiac output was observed at the end of the study (P < 0.05). Standard monitoring was unable to detect these early preload alterations. Surprisingly, the bronchoalveolar protein content was greatly increased at the end of the study compared with baseline levels (P < 0.01). This finding was inconsistent with the notion that the pulmonary edema induced by surfactant deactivation was exclusively caused by high surface tension. CONCLUSIONS: Hypovolemia develops early after surfactant deactivation, in part due to the resulting fluid shift from the intravascular compartment to the lungs.
Franco Díaz; Benjamín Erranz; Alejandro Donoso; Cristóbal Carvajal; Tatiana Salomón; María Torres; Pablo Cruces; Andrew Davidson
Related Documents :
20060429 - Sustained release of water-insoluble simvastatin from biodegradable hydrogel augments b...
20666519 - Chain collapse and revival thermodynamics of poly(n-isopropylacrylamide) hydrogel.
20823599 - Preparation of gel-core-solid lipid nanoparticle: a novel way to improve the encapsulat...
10985489 - Preparation of macroporous poly(2-hydroxyethyl methacrylate) hydrogels by enhanced phas...
21421449 - Estimating water supply arsenic levels in the new england bladder cancer study.
16464549 - Acrylic/cyclodextrin hydrogels with enhanced drug loading and sustained release capabil...
22386379 - Fractionation of phosphorus biowastes: characterisation and environmental risk.
23479449 - Solubilization of poorly soluble photosensitizer hypericin by polymeric micelles and po...
20494399 - Removal of natural organic matter from drinking water by advanced oxidation processes.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-9
Journal Detail:
Title:  Paediatric anaesthesia     Volume:  -     ISSN:  1460-9592     ISO Abbreviation:  Paediatr Anaesth     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9206575     Medline TA:  Paediatr Anaesth     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 Blackwell Publishing Ltd.
Área de Cuidados Críticos, Hospital Padre Hurtado, Santiago, Chile; Unidad de Cuidado Intensivo Pediátrico, Clínica Alemana de Santiago, Santiago, Chile.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Genotypic characteristics of a Mycobacterium sp. isolated from yellowtail Seriola quinqueradiata and...
Next Document:  Development and Evaluation of a Modification of the Fried Frailty Criteria Using Population-Independ...