Real-time evaluation of an image analysis system for monitoring surgical hemoglobin loss
Monitoring blood loss is important for management of surgical patients. This study reviews a device (Triton) that uses computer analysis of a photograph to estimate hemoglobin (Hb) mass present on surgical sponges. The device essentially does what a clinician does when trying to make a visual estima...
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| Veröffentlicht in: | Journal of clinical monitoring and computing 2018-04, Vol.32 (2), p.303-310 |
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| creator | Konig, Gerhardt Waters, Jonathan H. Javidroozi, Mazyar Philip, Bridget Ting, Vicki Abbi, Gaurav Hsieh, Eric Tully, Griffeth Adams, Gregg |
| description | Monitoring blood loss is important for management of surgical patients. This study reviews a device (Triton) that uses computer analysis of a photograph to estimate hemoglobin (Hb) mass present on surgical sponges. The device essentially does what a clinician does when trying to make a visual estimation of blood loss by looking at a sponge, albeit with less subjective variation. The performance of the Triton system is reported upon in during real-time use in surgical procedures. The cumulative Hb losses estimated using the Triton system for 50 enrolled patients were compared with reference Hb measurements during the first quarter, half, three-quarters and full duration of the surgery. Additionally, the estimated blood loss (EBL) was calculated using the Triton measured Hb loss and compared with values obtained from both visual estimation and gravimetric measurements. Hb loss measured by Triton correlated with the reference method across the four measurement intervals. Bias remained low and increased from 0.1 g in the first quarter to 3.7 g at case completion. The limits of agreement remained narrow and increased proportionally from the beginning to the end of the cases, reaching a maximum range of −15.3 to 22.7 g. The median (IQR) difference of EBL derived from the Triton system, gravimetric method and visual estimation versus the reference value were 13 (74), 389 (287), and 4 (230) mL, respectively. Use of the Triton system to measure Hb loss in real-time during surgery is feasible and accurate. |
| doi_str_mv | 10.1007/s10877-017-0016-0 |
| format | Article |
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This study reviews a device (Triton) that uses computer analysis of a photograph to estimate hemoglobin (Hb) mass present on surgical sponges. The device essentially does what a clinician does when trying to make a visual estimation of blood loss by looking at a sponge, albeit with less subjective variation. The performance of the Triton system is reported upon in during real-time use in surgical procedures. The cumulative Hb losses estimated using the Triton system for 50 enrolled patients were compared with reference Hb measurements during the first quarter, half, three-quarters and full duration of the surgery. Additionally, the estimated blood loss (EBL) was calculated using the Triton measured Hb loss and compared with values obtained from both visual estimation and gravimetric measurements. Hb loss measured by Triton correlated with the reference method across the four measurement intervals. Bias remained low and increased from 0.1 g in the first quarter to 3.7 g at case completion. The limits of agreement remained narrow and increased proportionally from the beginning to the end of the cases, reaching a maximum range of −15.3 to 22.7 g. The median (IQR) difference of EBL derived from the Triton system, gravimetric method and visual estimation versus the reference value were 13 (74), 389 (287), and 4 (230) mL, respectively. Use of the Triton system to measure Hb loss in real-time during surgery is feasible and accurate.</description><identifier>ISSN: 1387-1307</identifier><identifier>EISSN: 1573-2614</identifier><identifier>DOI: 10.1007/s10877-017-0016-0</identifier><identifier>PMID: 28389913</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Anesthesiology ; Blood ; Correlation analysis ; Critical Care Medicine ; Gravimetry ; Health Sciences ; Hemoglobin ; Image analysis ; Intensive ; Medicine ; Medicine & Public Health ; Monitoring ; Original Research ; Patient assessment ; Patients ; Real time ; Statistics for Life Sciences ; Surgery ; Triton</subject><ispartof>Journal of clinical monitoring and computing, 2018-04, Vol.32 (2), p.303-310</ispartof><rights>Springer Science+Business Media Dordrecht 2017</rights><rights>Journal of Clinical Monitoring and Computing is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c518t-a704839c9b571abec484254838482e5262eebd411a5bbbb8123c9131a359930c3</citedby><cites>FETCH-LOGICAL-c518t-a704839c9b571abec484254838482e5262eebd411a5bbbb8123c9131a359930c3</cites><orcidid>0000-0003-4691-0731</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10877-017-0016-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10877-017-0016-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28389913$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Konig, Gerhardt</creatorcontrib><creatorcontrib>Waters, Jonathan H.</creatorcontrib><creatorcontrib>Javidroozi, Mazyar</creatorcontrib><creatorcontrib>Philip, Bridget</creatorcontrib><creatorcontrib>Ting, Vicki</creatorcontrib><creatorcontrib>Abbi, Gaurav</creatorcontrib><creatorcontrib>Hsieh, Eric</creatorcontrib><creatorcontrib>Tully, Griffeth</creatorcontrib><creatorcontrib>Adams, Gregg</creatorcontrib><title>Real-time evaluation of an image analysis system for monitoring surgical hemoglobin loss</title><title>Journal of clinical monitoring and computing</title><addtitle>J Clin Monit Comput</addtitle><addtitle>J Clin Monit Comput</addtitle><description>Monitoring blood loss is important for management of surgical patients. This study reviews a device (Triton) that uses computer analysis of a photograph to estimate hemoglobin (Hb) mass present on surgical sponges. The device essentially does what a clinician does when trying to make a visual estimation of blood loss by looking at a sponge, albeit with less subjective variation. The performance of the Triton system is reported upon in during real-time use in surgical procedures. The cumulative Hb losses estimated using the Triton system for 50 enrolled patients were compared with reference Hb measurements during the first quarter, half, three-quarters and full duration of the surgery. Additionally, the estimated blood loss (EBL) was calculated using the Triton measured Hb loss and compared with values obtained from both visual estimation and gravimetric measurements. Hb loss measured by Triton correlated with the reference method across the four measurement intervals. Bias remained low and increased from 0.1 g in the first quarter to 3.7 g at case completion. The limits of agreement remained narrow and increased proportionally from the beginning to the end of the cases, reaching a maximum range of −15.3 to 22.7 g. The median (IQR) difference of EBL derived from the Triton system, gravimetric method and visual estimation versus the reference value were 13 (74), 389 (287), and 4 (230) mL, respectively. Use of the Triton system to measure Hb loss in real-time during surgery is feasible and accurate.</description><subject>Anesthesiology</subject><subject>Blood</subject><subject>Correlation analysis</subject><subject>Critical Care Medicine</subject><subject>Gravimetry</subject><subject>Health Sciences</subject><subject>Hemoglobin</subject><subject>Image analysis</subject><subject>Intensive</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Monitoring</subject><subject>Original Research</subject><subject>Patient assessment</subject><subject>Patients</subject><subject>Real time</subject><subject>Statistics for Life 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evaluation of an image analysis system for monitoring surgical hemoglobin loss</title><author>Konig, Gerhardt ; Waters, Jonathan H. ; Javidroozi, Mazyar ; Philip, Bridget ; Ting, Vicki ; Abbi, Gaurav ; Hsieh, Eric ; Tully, Griffeth ; Adams, Gregg</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c518t-a704839c9b571abec484254838482e5262eebd411a5bbbb8123c9131a359930c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Anesthesiology</topic><topic>Blood</topic><topic>Correlation analysis</topic><topic>Critical Care Medicine</topic><topic>Gravimetry</topic><topic>Health Sciences</topic><topic>Hemoglobin</topic><topic>Image analysis</topic><topic>Intensive</topic><topic>Medicine</topic><topic>Medicine & Public Health</topic><topic>Monitoring</topic><topic>Original Research</topic><topic>Patient assessment</topic><topic>Patients</topic><topic>Real time</topic><topic>Statistics for 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Comput</stitle><addtitle>J Clin Monit Comput</addtitle><date>2018-04-01</date><risdate>2018</risdate><volume>32</volume><issue>2</issue><spage>303</spage><epage>310</epage><pages>303-310</pages><issn>1387-1307</issn><eissn>1573-2614</eissn><abstract>Monitoring blood loss is important for management of surgical patients. This study reviews a device (Triton) that uses computer analysis of a photograph to estimate hemoglobin (Hb) mass present on surgical sponges. The device essentially does what a clinician does when trying to make a visual estimation of blood loss by looking at a sponge, albeit with less subjective variation. The performance of the Triton system is reported upon in during real-time use in surgical procedures. The cumulative Hb losses estimated using the Triton system for 50 enrolled patients were compared with reference Hb measurements during the first quarter, half, three-quarters and full duration of the surgery. Additionally, the estimated blood loss (EBL) was calculated using the Triton measured Hb loss and compared with values obtained from both visual estimation and gravimetric measurements. Hb loss measured by Triton correlated with the reference method across the four measurement intervals. Bias remained low and increased from 0.1 g in the first quarter to 3.7 g at case completion. The limits of agreement remained narrow and increased proportionally from the beginning to the end of the cases, reaching a maximum range of −15.3 to 22.7 g. The median (IQR) difference of EBL derived from the Triton system, gravimetric method and visual estimation versus the reference value were 13 (74), 389 (287), and 4 (230) mL, respectively. Use of the Triton system to measure Hb loss in real-time during surgery is feasible and accurate.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><pmid>28389913</pmid><doi>10.1007/s10877-017-0016-0</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-4691-0731</orcidid><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Anesthesiology Blood Correlation analysis Critical Care Medicine Gravimetry Health Sciences Hemoglobin Image analysis Intensive Medicine Medicine & Public Health Monitoring Original Research Patient assessment Patients Real time Statistics for Life Sciences Surgery Triton |
| title | Real-time evaluation of an image analysis system for monitoring surgical hemoglobin loss |
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