Impaired Autoregulation in Preterm Infants Identified by Using Spatially Resolved Spectroscopy
The absence of cerebral autoregulation in preterm infants has been associated with adverse outcome, but its bedside assessment in the immature brain is problematic. We used spatially resolved spectroscopy to continuously measure cerebral oxygen saturation (expressed as a tissue-oxygenation index) an...
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| Veröffentlicht in: | Pediatrics (Evanston) 2008-03, Vol.121 (3), p.e604-e611 |
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| creator | Wong, Flora Y Leung, Terence S Austin, Topun Wilkinson, Malcolm Meek, Judith H Wyatt, John S Walker, Adrian M |
| description | The absence of cerebral autoregulation in preterm infants has been associated with adverse outcome, but its bedside assessment in the immature brain is problematic. We used spatially resolved spectroscopy to continuously measure cerebral oxygen saturation (expressed as a tissue-oxygenation index) and used the correlation of tissue-oxygenation index with spontaneous fluctuations in mean arterial blood pressure to assess cerebral autoregulation.
The tissue-oxygenation index and mean arterial blood pressure were continuously measured in very premature infants (n = 24) of mean (+/-SD) gestational age of 26 (+/-2.3) weeks at a mean postnatal age of 28 (+/-22) hours. The correlation between mean arterial blood pressure and tissue-oxygenation index in the frequency domain was assessed by using cross-spectral analysis techniques (coherence and transfer-function gain). Values of coherence reflect the strength of linear correlation, whereas transfer-function gain reflects the amplitude of tissue-oxygenation index changes relative to mean arterial blood pressure changes.
High coherence (coherence > or = 0.5) values were found in 9 infants who were of lower gestational age, lower birth weight, and lower mean arterial blood pressure than infants with coherence of < 0.5; high-coherence infants also had higher median Clinical Risk Index for Babies scores and a higher rate of neonatal deaths. Coherence of > or = 0.5 predicted mortality with a positive predictive value of 67% and negative predictive value of 100%. In multifactorial analysis, coherence alone was the best predictor of mortality and Clinical Risk Index for Babies score alone was the best predictor of coherence.
High coherence between mean arterial blood pressure and tissue-oxygenation index indicates impaired cerebral autoregulation in clinically sick preterm infants and is strongly associated with subsequent mortality. Cross-spectral analysis of mean arterial blood pressure and tissue-oxygenation index has the potential to provide continuous bedside assessment of cerebral autoregulation and to guide therapeutic interventions. |
| doi_str_mv | 10.1542/peds.2007-1487 |
| format | Article |
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The tissue-oxygenation index and mean arterial blood pressure were continuously measured in very premature infants (n = 24) of mean (+/-SD) gestational age of 26 (+/-2.3) weeks at a mean postnatal age of 28 (+/-22) hours. The correlation between mean arterial blood pressure and tissue-oxygenation index in the frequency domain was assessed by using cross-spectral analysis techniques (coherence and transfer-function gain). Values of coherence reflect the strength of linear correlation, whereas transfer-function gain reflects the amplitude of tissue-oxygenation index changes relative to mean arterial blood pressure changes.
High coherence (coherence > or = 0.5) values were found in 9 infants who were of lower gestational age, lower birth weight, and lower mean arterial blood pressure than infants with coherence of < 0.5; high-coherence infants also had higher median Clinical Risk Index for Babies scores and a higher rate of neonatal deaths. Coherence of > or = 0.5 predicted mortality with a positive predictive value of 67% and negative predictive value of 100%. In multifactorial analysis, coherence alone was the best predictor of mortality and Clinical Risk Index for Babies score alone was the best predictor of coherence.
High coherence between mean arterial blood pressure and tissue-oxygenation index indicates impaired cerebral autoregulation in clinically sick preterm infants and is strongly associated with subsequent mortality. Cross-spectral analysis of mean arterial blood pressure and tissue-oxygenation index has the potential to provide continuous bedside assessment of cerebral autoregulation and to guide therapeutic interventions.</description><identifier>ISSN: 0031-4005</identifier><identifier>EISSN: 1098-4275</identifier><identifier>DOI: 10.1542/peds.2007-1487</identifier><identifier>PMID: 18250118</identifier><identifier>CODEN: PEDIAU</identifier><language>eng</language><publisher>United States: Am Acad Pediatrics</publisher><subject>Babies ; Blood pressure ; Brain ; Brain - blood supply ; Brain - embryology ; Cause of Death ; Cerebral palsy ; Cerebrovascular Circulation - physiology ; Cohort Studies ; Correlation analysis ; Female ; Follow-Up Studies ; Gestational Age ; Homeostasis ; Humans ; Infant, Newborn ; Infant, Premature ; Male ; Oxygen ; Oxygen Consumption - physiology ; Pediatrics ; Probability ; Respiratory Distress Syndrome, Newborn - diagnosis ; Respiratory Distress Syndrome, Newborn - mortality ; Risk Assessment ; Severity of Illness Index ; Spectroscopy, Near-Infrared - methods ; Spectrum analysis ; Survival Rate ; Tissues</subject><ispartof>Pediatrics (Evanston), 2008-03, Vol.121 (3), p.e604-e611</ispartof><rights>Copyright American Academy of Pediatrics Mar 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c457t-7a25cf65c704f65071ed209731493d8e3b95cc3b880cee09a97a6bd4302da1263</citedby><cites>FETCH-LOGICAL-c457t-7a25cf65c704f65071ed209731493d8e3b95cc3b880cee09a97a6bd4302da1263</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18250118$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wong, Flora Y</creatorcontrib><creatorcontrib>Leung, Terence S</creatorcontrib><creatorcontrib>Austin, Topun</creatorcontrib><creatorcontrib>Wilkinson, Malcolm</creatorcontrib><creatorcontrib>Meek, Judith H</creatorcontrib><creatorcontrib>Wyatt, John S</creatorcontrib><creatorcontrib>Walker, Adrian M</creatorcontrib><title>Impaired Autoregulation in Preterm Infants Identified by Using Spatially Resolved Spectroscopy</title><title>Pediatrics (Evanston)</title><addtitle>Pediatrics</addtitle><description>The absence of cerebral autoregulation in preterm infants has been associated with adverse outcome, but its bedside assessment in the immature brain is problematic. We used spatially resolved spectroscopy to continuously measure cerebral oxygen saturation (expressed as a tissue-oxygenation index) and used the correlation of tissue-oxygenation index with spontaneous fluctuations in mean arterial blood pressure to assess cerebral autoregulation.
The tissue-oxygenation index and mean arterial blood pressure were continuously measured in very premature infants (n = 24) of mean (+/-SD) gestational age of 26 (+/-2.3) weeks at a mean postnatal age of 28 (+/-22) hours. The correlation between mean arterial blood pressure and tissue-oxygenation index in the frequency domain was assessed by using cross-spectral analysis techniques (coherence and transfer-function gain). Values of coherence reflect the strength of linear correlation, whereas transfer-function gain reflects the amplitude of tissue-oxygenation index changes relative to mean arterial blood pressure changes.
High coherence (coherence > or = 0.5) values were found in 9 infants who were of lower gestational age, lower birth weight, and lower mean arterial blood pressure than infants with coherence of < 0.5; high-coherence infants also had higher median Clinical Risk Index for Babies scores and a higher rate of neonatal deaths. Coherence of > or = 0.5 predicted mortality with a positive predictive value of 67% and negative predictive value of 100%. In multifactorial analysis, coherence alone was the best predictor of mortality and Clinical Risk Index for Babies score alone was the best predictor of coherence.
High coherence between mean arterial blood pressure and tissue-oxygenation index indicates impaired cerebral autoregulation in clinically sick preterm infants and is strongly associated with subsequent mortality. Cross-spectral analysis of mean arterial blood pressure and tissue-oxygenation index has the potential to provide continuous bedside assessment of cerebral autoregulation and to guide therapeutic interventions.</description><subject>Babies</subject><subject>Blood pressure</subject><subject>Brain</subject><subject>Brain - blood supply</subject><subject>Brain - embryology</subject><subject>Cause of Death</subject><subject>Cerebral palsy</subject><subject>Cerebrovascular Circulation - physiology</subject><subject>Cohort Studies</subject><subject>Correlation analysis</subject><subject>Female</subject><subject>Follow-Up Studies</subject><subject>Gestational Age</subject><subject>Homeostasis</subject><subject>Humans</subject><subject>Infant, Newborn</subject><subject>Infant, Premature</subject><subject>Male</subject><subject>Oxygen</subject><subject>Oxygen Consumption - physiology</subject><subject>Pediatrics</subject><subject>Probability</subject><subject>Respiratory Distress Syndrome, Newborn - diagnosis</subject><subject>Respiratory Distress Syndrome, Newborn - mortality</subject><subject>Risk Assessment</subject><subject>Severity of Illness Index</subject><subject>Spectroscopy, Near-Infrared - methods</subject><subject>Spectrum analysis</subject><subject>Survival Rate</subject><subject>Tissues</subject><issn>0031-4005</issn><issn>1098-4275</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1v1DAQhi0EokvhyhFFHLhlO_6KnWNVUVipUitKr1iOM9m6yhe2Q7X_Hke7EogLpxnJz7ye0UPIewpbKgW7mLGNWwagSiq0ekE2FGpdCqbkS7IB4LQUAPKMvInxCQCEVOw1OaOaSaBUb8iP3TBbH7AtLpc0BdwvvU1-Ggs_FncBE4ah2I2dHVMsdi2OyXc-w82heIh-3Bf3c8Zt3x-Kbxin_ld-u5_RpTBFN82Ht-RVZ_uI7071nDxcf_5-9bW8uf2yu7q8KV3eKJXKMum6SjoFIhdQFFsGteJU1LzVyJtaOscbrcEhQm1rZaumFRxYaymr-Dn5dMydw_RzwZjM4KPDvrcjTks0CngFmtH_ggxkpSoKGfz4D_g0LWHMRxjGNNcK6vXb7RFy-d4YsDNz8IMNB0PBrH7M6sesfszqJw98OKUuzYDtH_wkJAMXR-DR7x-fs5g1wdsUvIt_tZRRww1WIPhvxFmcoA</recordid><startdate>20080301</startdate><enddate>20080301</enddate><creator>Wong, Flora Y</creator><creator>Leung, Terence S</creator><creator>Austin, Topun</creator><creator>Wilkinson, Malcolm</creator><creator>Meek, Judith H</creator><creator>Wyatt, John S</creator><creator>Walker, Adrian M</creator><general>Am Acad Pediatrics</general><general>American Academy of Pediatrics</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TS</scope><scope>7U9</scope><scope>H94</scope><scope>K9.</scope><scope>M7N</scope><scope>NAPCQ</scope><scope>U9A</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>20080301</creationdate><title>Impaired Autoregulation in Preterm Infants Identified by Using Spatially Resolved Spectroscopy</title><author>Wong, Flora Y ; Leung, Terence S ; Austin, Topun ; Wilkinson, Malcolm ; Meek, Judith H ; Wyatt, John S ; Walker, Adrian M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c457t-7a25cf65c704f65071ed209731493d8e3b95cc3b880cee09a97a6bd4302da1263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Babies</topic><topic>Blood pressure</topic><topic>Brain</topic><topic>Brain - blood supply</topic><topic>Brain - embryology</topic><topic>Cause of Death</topic><topic>Cerebral palsy</topic><topic>Cerebrovascular Circulation - physiology</topic><topic>Cohort Studies</topic><topic>Correlation analysis</topic><topic>Female</topic><topic>Follow-Up Studies</topic><topic>Gestational Age</topic><topic>Homeostasis</topic><topic>Humans</topic><topic>Infant, Newborn</topic><topic>Infant, Premature</topic><topic>Male</topic><topic>Oxygen</topic><topic>Oxygen Consumption - physiology</topic><topic>Pediatrics</topic><topic>Probability</topic><topic>Respiratory Distress Syndrome, Newborn - diagnosis</topic><topic>Respiratory Distress Syndrome, Newborn - mortality</topic><topic>Risk Assessment</topic><topic>Severity of Illness Index</topic><topic>Spectroscopy, Near-Infrared - methods</topic><topic>Spectrum analysis</topic><topic>Survival Rate</topic><topic>Tissues</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wong, Flora Y</creatorcontrib><creatorcontrib>Leung, Terence S</creatorcontrib><creatorcontrib>Austin, Topun</creatorcontrib><creatorcontrib>Wilkinson, Malcolm</creatorcontrib><creatorcontrib>Meek, Judith H</creatorcontrib><creatorcontrib>Wyatt, John S</creatorcontrib><creatorcontrib>Walker, Adrian M</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Physical Education Index</collection><collection>Virology and AIDS Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Pediatrics (Evanston)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wong, Flora Y</au><au>Leung, Terence S</au><au>Austin, Topun</au><au>Wilkinson, Malcolm</au><au>Meek, Judith H</au><au>Wyatt, John S</au><au>Walker, Adrian M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Impaired Autoregulation in Preterm Infants Identified by Using Spatially Resolved Spectroscopy</atitle><jtitle>Pediatrics (Evanston)</jtitle><addtitle>Pediatrics</addtitle><date>2008-03-01</date><risdate>2008</risdate><volume>121</volume><issue>3</issue><spage>e604</spage><epage>e611</epage><pages>e604-e611</pages><issn>0031-4005</issn><eissn>1098-4275</eissn><coden>PEDIAU</coden><abstract>The absence of cerebral autoregulation in preterm infants has been associated with adverse outcome, but its bedside assessment in the immature brain is problematic. We used spatially resolved spectroscopy to continuously measure cerebral oxygen saturation (expressed as a tissue-oxygenation index) and used the correlation of tissue-oxygenation index with spontaneous fluctuations in mean arterial blood pressure to assess cerebral autoregulation.
The tissue-oxygenation index and mean arterial blood pressure were continuously measured in very premature infants (n = 24) of mean (+/-SD) gestational age of 26 (+/-2.3) weeks at a mean postnatal age of 28 (+/-22) hours. The correlation between mean arterial blood pressure and tissue-oxygenation index in the frequency domain was assessed by using cross-spectral analysis techniques (coherence and transfer-function gain). Values of coherence reflect the strength of linear correlation, whereas transfer-function gain reflects the amplitude of tissue-oxygenation index changes relative to mean arterial blood pressure changes.
High coherence (coherence > or = 0.5) values were found in 9 infants who were of lower gestational age, lower birth weight, and lower mean arterial blood pressure than infants with coherence of < 0.5; high-coherence infants also had higher median Clinical Risk Index for Babies scores and a higher rate of neonatal deaths. Coherence of > or = 0.5 predicted mortality with a positive predictive value of 67% and negative predictive value of 100%. In multifactorial analysis, coherence alone was the best predictor of mortality and Clinical Risk Index for Babies score alone was the best predictor of coherence.
High coherence between mean arterial blood pressure and tissue-oxygenation index indicates impaired cerebral autoregulation in clinically sick preterm infants and is strongly associated with subsequent mortality. Cross-spectral analysis of mean arterial blood pressure and tissue-oxygenation index has the potential to provide continuous bedside assessment of cerebral autoregulation and to guide therapeutic interventions.</abstract><cop>United States</cop><pub>Am Acad Pediatrics</pub><pmid>18250118</pmid><doi>10.1542/peds.2007-1487</doi></addata></record> |
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| subjects | Babies Blood pressure Brain Brain - blood supply Brain - embryology Cause of Death Cerebral palsy Cerebrovascular Circulation - physiology Cohort Studies Correlation analysis Female Follow-Up Studies Gestational Age Homeostasis Humans Infant, Newborn Infant, Premature Male Oxygen Oxygen Consumption - physiology Pediatrics Probability Respiratory Distress Syndrome, Newborn - diagnosis Respiratory Distress Syndrome, Newborn - mortality Risk Assessment Severity of Illness Index Spectroscopy, Near-Infrared - methods Spectrum analysis Survival Rate Tissues |
| title | Impaired Autoregulation in Preterm Infants Identified by Using Spatially Resolved Spectroscopy |
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