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Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets

BACKGROUND: The aim of this study was to explore the effects of different tidal volume (V(T)) ventilation on paraquat-induced acute lung injury or acute respiratory distress syndrome (ALI/ARDS) in piglets. MATERIAL/METHODS: We developed ALI/ARDS models in piglets by intraperitoneal injection of para...

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Autores principales: Lan, Chao, Wang, Jinzhu, Li, Li, Li, Haina, Li, Lu, Su, Qianqian, Che, Lu, Liu, Lanping, Di, Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Scientific Literature, Inc. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4335577/
https://www.ncbi.nlm.nih.gov/pubmed/25671690
http://dx.doi.org/10.12659/MSM.893179
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author Lan, Chao
Wang, Jinzhu
Li, Li
Li, Haina
Li, Lu
Su, Qianqian
Che, Lu
Liu, Lanping
Di, Min
author_facet Lan, Chao
Wang, Jinzhu
Li, Li
Li, Haina
Li, Lu
Su, Qianqian
Che, Lu
Liu, Lanping
Di, Min
author_sort Lan, Chao
collection PubMed
description BACKGROUND: The aim of this study was to explore the effects of different tidal volume (V(T)) ventilation on paraquat-induced acute lung injury or acute respiratory distress syndrome (ALI/ARDS) in piglets. MATERIAL/METHODS: We developed ALI/ARDS models in piglets by intraperitoneal injection of paraquat (PQ). The piglets were randomly divided into three groups: small V(T) group (V(T)=6 ml/kg, n=6), middle V(T) group (V(T)=10 ml/kg, n=6), and large V(T) group (V(T)=15 ml/kg, n=6), with the positive end-expiratory pressure (PEEP) set as 10 cmH(2)O. The hemodynamics were monitored by pulse-indicated continuous cardiac output (PiCCO) and the airway pressure changes and blood gas analysis indexes were recorded at different time points. The pathological changes were observed by lung puncture. RESULTS: The piglets showed ALI/ARDS in 4.5±0.8 hours after PQ intraperitoneal injection. PH, PaO(2) and oxygenation indexes in the three groups all decreased after modeling success compared with baseline, and PaCO(2) increased significantly. PH in the small VT group decreased most obviously after ventilation for 6 hours. PaO(2) and oxygenation indexes in the small VT group showed the most obvious increase after ventilation for 2 hours and were much higher than the other two groups after ventilation for 6 hours. PaCO(2) increased gradually after mechanical ventilation and the small VT group showed most obvious increase. The ELWI increased obviously after ventilation for 2 hours and then the small VT group clearly decreased. PIP and plateau pressure (Pplat) in the small VT group decreased gradually and in the middle and large VT group they increased after ventilation. The lung histopathology showed that the large VT group had the most severe damage and the small VT group had only minimal damage. CONCLUSIONS: Small tidal volume ventilation combined with PEEP could alleviate the acute lung injury induced by paraquat and improve oxygenation.
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spelling pubmed-43355772015-03-13 Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets Lan, Chao Wang, Jinzhu Li, Li Li, Haina Li, Lu Su, Qianqian Che, Lu Liu, Lanping Di, Min Med Sci Monit Animal Study BACKGROUND: The aim of this study was to explore the effects of different tidal volume (V(T)) ventilation on paraquat-induced acute lung injury or acute respiratory distress syndrome (ALI/ARDS) in piglets. MATERIAL/METHODS: We developed ALI/ARDS models in piglets by intraperitoneal injection of paraquat (PQ). The piglets were randomly divided into three groups: small V(T) group (V(T)=6 ml/kg, n=6), middle V(T) group (V(T)=10 ml/kg, n=6), and large V(T) group (V(T)=15 ml/kg, n=6), with the positive end-expiratory pressure (PEEP) set as 10 cmH(2)O. The hemodynamics were monitored by pulse-indicated continuous cardiac output (PiCCO) and the airway pressure changes and blood gas analysis indexes were recorded at different time points. The pathological changes were observed by lung puncture. RESULTS: The piglets showed ALI/ARDS in 4.5±0.8 hours after PQ intraperitoneal injection. PH, PaO(2) and oxygenation indexes in the three groups all decreased after modeling success compared with baseline, and PaCO(2) increased significantly. PH in the small VT group decreased most obviously after ventilation for 6 hours. PaO(2) and oxygenation indexes in the small VT group showed the most obvious increase after ventilation for 2 hours and were much higher than the other two groups after ventilation for 6 hours. PaCO(2) increased gradually after mechanical ventilation and the small VT group showed most obvious increase. The ELWI increased obviously after ventilation for 2 hours and then the small VT group clearly decreased. PIP and plateau pressure (Pplat) in the small VT group decreased gradually and in the middle and large VT group they increased after ventilation. The lung histopathology showed that the large VT group had the most severe damage and the small VT group had only minimal damage. CONCLUSIONS: Small tidal volume ventilation combined with PEEP could alleviate the acute lung injury induced by paraquat and improve oxygenation. International Scientific Literature, Inc. 2015-02-11 /pmc/articles/PMC4335577/ /pubmed/25671690 http://dx.doi.org/10.12659/MSM.893179 Text en © Med Sci Monit, 2015 This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License
spellingShingle Animal Study
Lan, Chao
Wang, Jinzhu
Li, Li
Li, Haina
Li, Lu
Su, Qianqian
Che, Lu
Liu, Lanping
Di, Min
Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets
title Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets
title_full Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets
title_fullStr Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets
title_full_unstemmed Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets
title_short Effects of Different Tidal Volume Ventilation on Paraquat-Induced Acute Lung Injury in Piglets
title_sort effects of different tidal volume ventilation on paraquat-induced acute lung injury in piglets
topic Animal Study
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4335577/
https://www.ncbi.nlm.nih.gov/pubmed/25671690
http://dx.doi.org/10.12659/MSM.893179
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