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Hypercapnic Coma Due to Spontaneous Pneumothorax: Case Report and Review of the Literature
Abstract Background: Hypercapnic coma is a rare differential diagnosis in the unconscious patient. One underlying mechanism may be hypoventilation due to spontaneous pneumothorax. Although hypercapnia is not a typical finding in spontaneous pneumothorax in patients with otherwise healthy lungs, unde...
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Published in: | The Journal of emergency medicine 2012, Vol.42 (1), p.e1-e6 |
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container_title | The Journal of emergency medicine |
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creator | Otten, Martine, MD Schwarte, Lothar A., MD, PHD Oosterhuis, J. Wolter A., MD, PHD Loer, Stephan A., MD, PHD, MSC Schober, Patrick, MD |
description | Abstract Background: Hypercapnic coma is a rare differential diagnosis in the unconscious patient. One underlying mechanism may be hypoventilation due to spontaneous pneumothorax. Although hypercapnia is not a typical finding in spontaneous pneumothorax in patients with otherwise healthy lungs, under certain circumstances, hypercapnia may readily develop. Objectives: We report a rare case of profound hypercapnic coma due to spontaneous pneumothorax after contralateral pneumonectomy. In addition, we review other causes of hypercapnic coma and its outcome and discuss the relationship between arterial carbon dioxide partial pressure and level of consciousness. Case Report: An 85-year-old man without evidence of trauma or intoxication presented unconscious to our Emergency Department. The physical examination and X-ray study revealed a left-sided spontaneous pneumothorax. A right-sided pneumonectomy 25 years earlier had promoted the development of profound hypercapnic coma. After insertion of a thoracic drain, the coma rapidly resolved without any neurological deficit. Conclusions: Although severe hypercapnia is usually due to decompensation of chronic lung disease, pneumothorax potentially may cause hypercapnic coma. Review of the literature suggests that there is no close correlation between arterial pCO2 (partial pressure of CO2 ) levels and the degree of impairment of consciousness; however, levels exceeding 80 mm Hg are likely associated with significantly impaired consciousness. Hypercapnic coma usually resolves without neurological deficit as arterial pCO2 tensions decline. |
doi_str_mv | 10.1016/j.jemermed.2008.10.020 |
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Wolter A., MD, PHD ; Loer, Stephan A., MD, PHD, MSC ; Schober, Patrick, MD</creator><creatorcontrib>Otten, Martine, MD ; Schwarte, Lothar A., MD, PHD ; Oosterhuis, J. Wolter A., MD, PHD ; Loer, Stephan A., MD, PHD, MSC ; Schober, Patrick, MD</creatorcontrib><description>Abstract Background: Hypercapnic coma is a rare differential diagnosis in the unconscious patient. One underlying mechanism may be hypoventilation due to spontaneous pneumothorax. Although hypercapnia is not a typical finding in spontaneous pneumothorax in patients with otherwise healthy lungs, under certain circumstances, hypercapnia may readily develop. Objectives: We report a rare case of profound hypercapnic coma due to spontaneous pneumothorax after contralateral pneumonectomy. In addition, we review other causes of hypercapnic coma and its outcome and discuss the relationship between arterial carbon dioxide partial pressure and level of consciousness. Case Report: An 85-year-old man without evidence of trauma or intoxication presented unconscious to our Emergency Department. The physical examination and X-ray study revealed a left-sided spontaneous pneumothorax. A right-sided pneumonectomy 25 years earlier had promoted the development of profound hypercapnic coma. After insertion of a thoracic drain, the coma rapidly resolved without any neurological deficit. Conclusions: Although severe hypercapnia is usually due to decompensation of chronic lung disease, pneumothorax potentially may cause hypercapnic coma. Review of the literature suggests that there is no close correlation between arterial pCO2 (partial pressure of CO2 ) levels and the degree of impairment of consciousness; however, levels exceeding 80 mm Hg are likely associated with significantly impaired consciousness. Hypercapnic coma usually resolves without neurological deficit as arterial pCO2 tensions decline.</description><identifier>ISSN: 0736-4679</identifier><identifier>EISSN: 2352-5029</identifier><identifier>DOI: 10.1016/j.jemermed.2008.10.020</identifier><identifier>PMID: 19272744</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Aged, 80 and over ; carbon dioxide ; Carbon Dioxide - physiology ; coma ; Coma - etiology ; Coma - physiopathology ; consciousness ; Consciousness - physiology ; Emergency ; Humans ; hypercapnia ; Hypercapnia - etiology ; Male ; Partial Pressure ; Pneumonectomy - adverse effects ; pneumothorax ; Pneumothorax - complications ; unconscious</subject><ispartof>The Journal of emergency medicine, 2012, Vol.42 (1), p.e1-e6</ispartof><rights>Elsevier Inc.</rights><rights>2012 Elsevier Inc.</rights><rights>Copyright © 2012 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-c0ae114795a498b535223d11abc40383bf7e49f914ac32616ad6fbcf05cb34ad3</citedby><cites>FETCH-LOGICAL-c422t-c0ae114795a498b535223d11abc40383bf7e49f914ac32616ad6fbcf05cb34ad3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19272744$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Otten, Martine, MD</creatorcontrib><creatorcontrib>Schwarte, Lothar A., MD, PHD</creatorcontrib><creatorcontrib>Oosterhuis, J. Wolter A., MD, PHD</creatorcontrib><creatorcontrib>Loer, Stephan A., MD, PHD, MSC</creatorcontrib><creatorcontrib>Schober, Patrick, MD</creatorcontrib><title>Hypercapnic Coma Due to Spontaneous Pneumothorax: Case Report and Review of the Literature</title><title>The Journal of emergency medicine</title><addtitle>J Emerg Med</addtitle><description>Abstract Background: Hypercapnic coma is a rare differential diagnosis in the unconscious patient. One underlying mechanism may be hypoventilation due to spontaneous pneumothorax. Although hypercapnia is not a typical finding in spontaneous pneumothorax in patients with otherwise healthy lungs, under certain circumstances, hypercapnia may readily develop. Objectives: We report a rare case of profound hypercapnic coma due to spontaneous pneumothorax after contralateral pneumonectomy. In addition, we review other causes of hypercapnic coma and its outcome and discuss the relationship between arterial carbon dioxide partial pressure and level of consciousness. Case Report: An 85-year-old man without evidence of trauma or intoxication presented unconscious to our Emergency Department. The physical examination and X-ray study revealed a left-sided spontaneous pneumothorax. A right-sided pneumonectomy 25 years earlier had promoted the development of profound hypercapnic coma. After insertion of a thoracic drain, the coma rapidly resolved without any neurological deficit. Conclusions: Although severe hypercapnia is usually due to decompensation of chronic lung disease, pneumothorax potentially may cause hypercapnic coma. Review of the literature suggests that there is no close correlation between arterial pCO2 (partial pressure of CO2 ) levels and the degree of impairment of consciousness; however, levels exceeding 80 mm Hg are likely associated with significantly impaired consciousness. Hypercapnic coma usually resolves without neurological deficit as arterial pCO2 tensions decline.</description><subject>Aged, 80 and over</subject><subject>carbon dioxide</subject><subject>Carbon Dioxide - physiology</subject><subject>coma</subject><subject>Coma - etiology</subject><subject>Coma - physiopathology</subject><subject>consciousness</subject><subject>Consciousness - physiology</subject><subject>Emergency</subject><subject>Humans</subject><subject>hypercapnia</subject><subject>Hypercapnia - etiology</subject><subject>Male</subject><subject>Partial Pressure</subject><subject>Pneumonectomy - adverse effects</subject><subject>pneumothorax</subject><subject>Pneumothorax - complications</subject><subject>unconscious</subject><issn>0736-4679</issn><issn>2352-5029</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkU1v1DAQhi0EotvCX6h845Tt-CNfHBBooRRpJRCFCxfLcSaqQxIH26Hsv6-jXTj0wmlG43c-_LyEXDLYMmDFVb_tcUQ_YrvlAFUqboHDE7LhIudZDrx-SjZQiiKTRVmfkfMQegBWQsWekzNW85KXUm7Ij5vDjN7oebKG7tyo6fsFaXT0dnZT1BO6JdAvEy6ji3fO6z-v6U4HpF9xdj5SPbUp_W3xnrqOxjukexvR67h4fEGedXoI-PIUL8j36w_fdjfZ_vPHT7t3-8xIzmNmQCNjsqxzLeuqydP9XLSM6cZIEJVouhJl3dVMaiN4wQrdFl1jOshNI6RuxQV5dZw7e_drwRDVaIPBYTher2pW5okBr5KyOCqNdyF47NTs7aj9QTFQK1bVq79Y1Yp1rSesqfHytGJp1rd_bSeOSfD2KMD00YTDq2AsTgZb69FE1Tr7_x1vHo0wg02u6OEnHjD0bvFTwqiYClyBul3NXb2FChhAUYkHpAShbA</recordid><startdate>2012</startdate><enddate>2012</enddate><creator>Otten, Martine, MD</creator><creator>Schwarte, Lothar A., MD, PHD</creator><creator>Oosterhuis, J. Wolter A., MD, PHD</creator><creator>Loer, Stephan A., MD, PHD, MSC</creator><creator>Schober, Patrick, MD</creator><general>Elsevier Inc</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>7X8</scope></search><sort><creationdate>2012</creationdate><title>Hypercapnic Coma Due to Spontaneous Pneumothorax: Case Report and Review of the Literature</title><author>Otten, Martine, MD ; Schwarte, Lothar A., MD, PHD ; Oosterhuis, J. 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Wolter A., MD, PHD</creatorcontrib><creatorcontrib>Loer, Stephan A., MD, PHD, MSC</creatorcontrib><creatorcontrib>Schober, Patrick, MD</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of emergency medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Otten, Martine, MD</au><au>Schwarte, Lothar A., MD, PHD</au><au>Oosterhuis, J. Wolter A., MD, PHD</au><au>Loer, Stephan A., MD, PHD, MSC</au><au>Schober, Patrick, MD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hypercapnic Coma Due to Spontaneous Pneumothorax: Case Report and Review of the Literature</atitle><jtitle>The Journal of emergency medicine</jtitle><addtitle>J Emerg Med</addtitle><date>2012</date><risdate>2012</risdate><volume>42</volume><issue>1</issue><spage>e1</spage><epage>e6</epage><pages>e1-e6</pages><issn>0736-4679</issn><eissn>2352-5029</eissn><abstract>Abstract Background: Hypercapnic coma is a rare differential diagnosis in the unconscious patient. One underlying mechanism may be hypoventilation due to spontaneous pneumothorax. Although hypercapnia is not a typical finding in spontaneous pneumothorax in patients with otherwise healthy lungs, under certain circumstances, hypercapnia may readily develop. Objectives: We report a rare case of profound hypercapnic coma due to spontaneous pneumothorax after contralateral pneumonectomy. In addition, we review other causes of hypercapnic coma and its outcome and discuss the relationship between arterial carbon dioxide partial pressure and level of consciousness. Case Report: An 85-year-old man without evidence of trauma or intoxication presented unconscious to our Emergency Department. The physical examination and X-ray study revealed a left-sided spontaneous pneumothorax. A right-sided pneumonectomy 25 years earlier had promoted the development of profound hypercapnic coma. After insertion of a thoracic drain, the coma rapidly resolved without any neurological deficit. Conclusions: Although severe hypercapnia is usually due to decompensation of chronic lung disease, pneumothorax potentially may cause hypercapnic coma. Review of the literature suggests that there is no close correlation between arterial pCO2 (partial pressure of CO2 ) levels and the degree of impairment of consciousness; however, levels exceeding 80 mm Hg are likely associated with significantly impaired consciousness. Hypercapnic coma usually resolves without neurological deficit as arterial pCO2 tensions decline.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>19272744</pmid><doi>10.1016/j.jemermed.2008.10.020</doi></addata></record> |
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subjects | Aged, 80 and over carbon dioxide Carbon Dioxide - physiology coma Coma - etiology Coma - physiopathology consciousness Consciousness - physiology Emergency Humans hypercapnia Hypercapnia - etiology Male Partial Pressure Pneumonectomy - adverse effects pneumothorax Pneumothorax - complications unconscious |
title | Hypercapnic Coma Due to Spontaneous Pneumothorax: Case Report and Review of the Literature |
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