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A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus
INTRODUCTION: The study sought to assess the feasibility and accuracy of measuring mixed venous oxygen saturation (SvO(2)) through the left main bronchus (SpO(2trachea)) METHODS: Twenty hybrid pigs of each sex were studied. After anesthesia, a Robertshaw double-lumen tracheal tube with a single-use...
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Formato: | Texto |
Lenguaje: | English |
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BioMed Central
2006
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1550812/ https://www.ncbi.nlm.nih.gov/pubmed/16356208 http://dx.doi.org/10.1186/cc3914 |
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author | Wang, Xiang-rui Zheng, Yong-jun Tian, Jie Wang, Zheng-hong Pan, Zhi-ying |
author_facet | Wang, Xiang-rui Zheng, Yong-jun Tian, Jie Wang, Zheng-hong Pan, Zhi-ying |
author_sort | Wang, Xiang-rui |
collection | PubMed |
description | INTRODUCTION: The study sought to assess the feasibility and accuracy of measuring mixed venous oxygen saturation (SvO(2)) through the left main bronchus (SpO(2trachea)) METHODS: Twenty hybrid pigs of each sex were studied. After anesthesia, a Robertshaw double-lumen tracheal tube with a single-use pediatric pulse oximeter attached to the left lateral surface was introduced toward the left main bronchus of the pig by means of a fibrobronchoscope. Measurements of SpO(2trachea )and oxygen saturation from pulmonary artery samples (SvO(2blood)) were performed with an intracuff pressure of 0 to 60 cmH(2)O. After equilibration, hemorrhagic shock was induced in these pigs by bleeding to a mean arterial blood pressure of 40 mmHg. With the intracuff pressure maintained at 60 cmH(2)O, SpO(2trachea )and SvO(2blood )were obtained respectively during the pre-shock period, immediately after the onset of shock, 15 and 30 minutes after shock, and 15, 30, and 60 minutes after resuscitation. RESULTS: SpO(2trachea )was the same as SvO(2blood )at an intracuff pressure of 10, 20, 40, and 60 cmH(2)O, but was reduced when the intracuff pressure was zero (p < 0.001 compared with SvO(2blood)) in hemodynamically stable states. Changes of SpO(2trachea )and SvO(2blood )corresponded with varieties of cardiac output during the hemorrhagic shock period. There was a significant correlation between the two methods at different time points. CONCLUSION: Measurement of the left main bronchus SpO(2 )is feasible and provides similar readings to SvO(2blood )in hemodynamically stable or in low saturation states. Tracheal oximetry readings are not primarily derived from the tracheal mucosa. The technique merits further evaluation. |
format | Text |
id | pubmed-1550812 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2006 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-15508122006-08-22 A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus Wang, Xiang-rui Zheng, Yong-jun Tian, Jie Wang, Zheng-hong Pan, Zhi-ying Crit Care Research INTRODUCTION: The study sought to assess the feasibility and accuracy of measuring mixed venous oxygen saturation (SvO(2)) through the left main bronchus (SpO(2trachea)) METHODS: Twenty hybrid pigs of each sex were studied. After anesthesia, a Robertshaw double-lumen tracheal tube with a single-use pediatric pulse oximeter attached to the left lateral surface was introduced toward the left main bronchus of the pig by means of a fibrobronchoscope. Measurements of SpO(2trachea )and oxygen saturation from pulmonary artery samples (SvO(2blood)) were performed with an intracuff pressure of 0 to 60 cmH(2)O. After equilibration, hemorrhagic shock was induced in these pigs by bleeding to a mean arterial blood pressure of 40 mmHg. With the intracuff pressure maintained at 60 cmH(2)O, SpO(2trachea )and SvO(2blood )were obtained respectively during the pre-shock period, immediately after the onset of shock, 15 and 30 minutes after shock, and 15, 30, and 60 minutes after resuscitation. RESULTS: SpO(2trachea )was the same as SvO(2blood )at an intracuff pressure of 10, 20, 40, and 60 cmH(2)O, but was reduced when the intracuff pressure was zero (p < 0.001 compared with SvO(2blood)) in hemodynamically stable states. Changes of SpO(2trachea )and SvO(2blood )corresponded with varieties of cardiac output during the hemorrhagic shock period. There was a significant correlation between the two methods at different time points. CONCLUSION: Measurement of the left main bronchus SpO(2 )is feasible and provides similar readings to SvO(2blood )in hemodynamically stable or in low saturation states. Tracheal oximetry readings are not primarily derived from the tracheal mucosa. The technique merits further evaluation. BioMed Central 2006 2005-12-06 /pmc/articles/PMC1550812/ /pubmed/16356208 http://dx.doi.org/10.1186/cc3914 Text en Copyright © 2005 Wang et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an open access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Wang, Xiang-rui Zheng, Yong-jun Tian, Jie Wang, Zheng-hong Pan, Zhi-ying A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
title | A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
title_full | A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
title_fullStr | A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
title_full_unstemmed | A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
title_short | A preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
title_sort | preliminary study on the monitoring of mixed venous oxygen saturation through the left main bronchus |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1550812/ https://www.ncbi.nlm.nih.gov/pubmed/16356208 http://dx.doi.org/10.1186/cc3914 |
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