Effect of recruitment and body positioning on lung volume and oxygenation in acute lung injury model
The mechanism of oxygenation improvement after recruitment manoeuvres or prone positioning in acute lung injury or acute respiratory distress syndrome is still unclear. We tried to determine the mechanism responsible for the effects of recruitment manoeuvres or prone positioning on lung aeration usi...
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| Veröffentlicht in: | Anaesthesia and intensive care 2008-11, Vol.36 (6), p.792-797 |
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| description | The mechanism of oxygenation improvement after recruitment manoeuvres or prone positioning in acute lung injury or acute respiratory distress syndrome is still unclear. We tried to determine the mechanism responsible for the effects of recruitment manoeuvres or prone positioning on lung aeration using a whole lung computed tomography scan in an oleic acid induced acute lung injury canine model. Twelve adult mongrel dogs were allocated into either the supine group (n=6) or the prone group (n=6). After the establishment of acute lung injury, three recruitment manoeuvres were performed at one-hour intervals. Haemodynamic and ventilatory variables, arterial blood gas analyses and CT scans of the whole lung were obtained 90 minutes after oleic acid injection and five minutes before and after each recruitment manoeuvre. Recruitment manoeuvres in the supine position improved oxygenation (P=0.025) that correlated with increase of the poorly- and well-aerated dorsal (dependent) lung volume (r=0.436, P=0.016). Prone positioning increased oxygenation (P=0.004) that also correlated with increase of the poorly- and well-aerated dorsal (nondependent) lung volume (r=0.787, P |
| doi_str_mv | 10.1177/0310057x0803600607 |
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G ; BAHK, J.-H ; LEE, H.-J ; IM, J.-G</creator><creatorcontrib>RYU, H. G ; BAHK, J.-H ; LEE, H.-J ; IM, J.-G</creatorcontrib><description>The mechanism of oxygenation improvement after recruitment manoeuvres or prone positioning in acute lung injury or acute respiratory distress syndrome is still unclear. We tried to determine the mechanism responsible for the effects of recruitment manoeuvres or prone positioning on lung aeration using a whole lung computed tomography scan in an oleic acid induced acute lung injury canine model. Twelve adult mongrel dogs were allocated into either the supine group (n=6) or the prone group (n=6). After the establishment of acute lung injury, three recruitment manoeuvres were performed at one-hour intervals. Haemodynamic and ventilatory variables, arterial blood gas analyses and CT scans of the whole lung were obtained 90 minutes after oleic acid injection and five minutes before and after each recruitment manoeuvre. Recruitment manoeuvres in the supine position improved oxygenation (P=0.025) that correlated with increase of the poorly- and well-aerated dorsal (dependent) lung volume (r=0.436, P=0.016). Prone positioning increased oxygenation (P=0.004) that also correlated with increase of the poorly- and well-aerated dorsal (nondependent) lung volume (r=0.787, P<0.001). However, the recruitment manoeuvre in the prone position had no effect on oxygenation despite an increase in ventral (dependent) lung volume. The increase in PaO2 after recruitment manoeuvres in the supine position or after prone positioning is related to the increase of the poorly- and well-aerated dorsal lung.</description><identifier>ISSN: 0310-057X</identifier><identifier>EISSN: 1448-0271</identifier><identifier>DOI: 10.1177/0310057x0803600607</identifier><identifier>PMID: 19115646</identifier><identifier>CODEN: AINCBS</identifier><language>eng</language><publisher>Edgecliff: Anaesthesia Society of Anaesthetists</publisher><subject>Acute Lung Injury ; Acute respiratory distress syndrome ; Anesthesia ; Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy ; Animals ; Biological and medical sciences ; Blood Gas Analysis - methods ; Care and treatment ; Diagnosis ; Disease Models, Animal ; Dogs ; Health aspects ; Lung - diagnostic imaging ; Lung - physiopathology ; Lung Volume Measurements - methods ; Male ; Medical sciences ; Oleic Acid ; Positive-Pressure Respiration - methods ; Posture ; Pulmonary Circulation ; Pulmonary Gas Exchange ; Pulmonary ventilation ; Respiratory Function Tests - methods ; Risk factors ; Tidal Volume ; Time Factors ; Tomography, Spiral Computed - methods</subject><ispartof>Anaesthesia and intensive care, 2008-11, Vol.36 (6), p.792-797</ispartof><rights>2009 INIST-CNRS</rights><rights>COPYRIGHT 2008 Sage Publications Ltd. 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G</creatorcontrib><creatorcontrib>BAHK, J.-H</creatorcontrib><creatorcontrib>LEE, H.-J</creatorcontrib><creatorcontrib>IM, J.-G</creatorcontrib><title>Effect of recruitment and body positioning on lung volume and oxygenation in acute lung injury model</title><title>Anaesthesia and intensive care</title><addtitle>Anaesth Intensive Care</addtitle><description>The mechanism of oxygenation improvement after recruitment manoeuvres or prone positioning in acute lung injury or acute respiratory distress syndrome is still unclear. We tried to determine the mechanism responsible for the effects of recruitment manoeuvres or prone positioning on lung aeration using a whole lung computed tomography scan in an oleic acid induced acute lung injury canine model. Twelve adult mongrel dogs were allocated into either the supine group (n=6) or the prone group (n=6). After the establishment of acute lung injury, three recruitment manoeuvres were performed at one-hour intervals. Haemodynamic and ventilatory variables, arterial blood gas analyses and CT scans of the whole lung were obtained 90 minutes after oleic acid injection and five minutes before and after each recruitment manoeuvre. Recruitment manoeuvres in the supine position improved oxygenation (P=0.025) that correlated with increase of the poorly- and well-aerated dorsal (dependent) lung volume (r=0.436, P=0.016). Prone positioning increased oxygenation (P=0.004) that also correlated with increase of the poorly- and well-aerated dorsal (nondependent) lung volume (r=0.787, P<0.001). However, the recruitment manoeuvre in the prone position had no effect on oxygenation despite an increase in ventral (dependent) lung volume. The increase in PaO2 after recruitment manoeuvres in the supine position or after prone positioning is related to the increase of the poorly- and well-aerated dorsal lung.</description><subject>Acute Lung Injury</subject><subject>Acute respiratory distress syndrome</subject><subject>Anesthesia</subject><subject>Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Blood Gas Analysis - methods</subject><subject>Care and treatment</subject><subject>Diagnosis</subject><subject>Disease Models, Animal</subject><subject>Dogs</subject><subject>Health aspects</subject><subject>Lung - diagnostic imaging</subject><subject>Lung - physiopathology</subject><subject>Lung Volume Measurements - methods</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Oleic Acid</subject><subject>Positive-Pressure Respiration - methods</subject><subject>Posture</subject><subject>Pulmonary Circulation</subject><subject>Pulmonary Gas Exchange</subject><subject>Pulmonary ventilation</subject><subject>Respiratory Function Tests - methods</subject><subject>Risk factors</subject><subject>Tidal Volume</subject><subject>Time Factors</subject><subject>Tomography, Spiral Computed - methods</subject><issn>0310-057X</issn><issn>1448-0271</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNpt0V1rFDEUBuAgil2rf8ALCUq9m3pOMvmYy1JaFQreKPRuyGQyS5aZZE1mSvffm3UHiyIJBMJzDid5CXmLcImo1CfgCCDUI2jgEkCCekY2WNe6AqbwOdkcQVXE_Rl5lfMOABumxEtyhg2ikLXckP5mGJydaRxocjYtfp5cmKkJPe1if6D7mP3sY_BhS2Og41LOhzguk_tt4uNh64I5CuoDNXaZ3Qn5sFvSgU6xd-Nr8mIwY3Zv1vOc_Li9-X79pbr79vnr9dVdZWvZzBWaRgmUDfC-w85wtMr22nYGmLa8QS4Fs64zRihurAItGUNjtMMOB172Ofl46rtP8efi8txOPls3jia4uORWNuX9DeoC3_8Dd3FJoczWMlZrDgJEQR9OaGtG1_owxDkZe-zYXpWP1KL0YkVd_keV1bvJ2xjc4Mv9XwXsVGBTzDm5od0nP5l0aBHaY67tmuv9U66l6N068NJNrn8qWYMs4GIFJlszDskE6_Mfx0BrLjXyX_TgqRQ</recordid><startdate>20081101</startdate><enddate>20081101</enddate><creator>RYU, H. 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G</au><au>BAHK, J.-H</au><au>LEE, H.-J</au><au>IM, J.-G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of recruitment and body positioning on lung volume and oxygenation in acute lung injury model</atitle><jtitle>Anaesthesia and intensive care</jtitle><addtitle>Anaesth Intensive Care</addtitle><date>2008-11-01</date><risdate>2008</risdate><volume>36</volume><issue>6</issue><spage>792</spage><epage>797</epage><pages>792-797</pages><issn>0310-057X</issn><eissn>1448-0271</eissn><coden>AINCBS</coden><abstract>The mechanism of oxygenation improvement after recruitment manoeuvres or prone positioning in acute lung injury or acute respiratory distress syndrome is still unclear. We tried to determine the mechanism responsible for the effects of recruitment manoeuvres or prone positioning on lung aeration using a whole lung computed tomography scan in an oleic acid induced acute lung injury canine model. Twelve adult mongrel dogs were allocated into either the supine group (n=6) or the prone group (n=6). After the establishment of acute lung injury, three recruitment manoeuvres were performed at one-hour intervals. Haemodynamic and ventilatory variables, arterial blood gas analyses and CT scans of the whole lung were obtained 90 minutes after oleic acid injection and five minutes before and after each recruitment manoeuvre. Recruitment manoeuvres in the supine position improved oxygenation (P=0.025) that correlated with increase of the poorly- and well-aerated dorsal (dependent) lung volume (r=0.436, P=0.016). Prone positioning increased oxygenation (P=0.004) that also correlated with increase of the poorly- and well-aerated dorsal (nondependent) lung volume (r=0.787, P<0.001). However, the recruitment manoeuvre in the prone position had no effect on oxygenation despite an increase in ventral (dependent) lung volume. The increase in PaO2 after recruitment manoeuvres in the supine position or after prone positioning is related to the increase of the poorly- and well-aerated dorsal lung.</abstract><cop>Edgecliff</cop><pub>Anaesthesia Society of Anaesthetists</pub><pmid>19115646</pmid><doi>10.1177/0310057x0803600607</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Acute Lung Injury Acute respiratory distress syndrome Anesthesia Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy Animals Biological and medical sciences Blood Gas Analysis - methods Care and treatment Diagnosis Disease Models, Animal Dogs Health aspects Lung - diagnostic imaging Lung - physiopathology Lung Volume Measurements - methods Male Medical sciences Oleic Acid Positive-Pressure Respiration - methods Posture Pulmonary Circulation Pulmonary Gas Exchange Pulmonary ventilation Respiratory Function Tests - methods Risk factors Tidal Volume Time Factors Tomography, Spiral Computed - methods |
| title | Effect of recruitment and body positioning on lung volume and oxygenation in acute lung injury model |
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