Changes in cerebral blood flow velocity after release of intraoperative tourniquets in humans: a transcranial Doppler study.


:The effect of release of intraoperative thigh tourniquets on velocity of blood flow in the middle cerebral artery was examined in five patients given general anesthesia with controlled ventilation for lower extremity orthopedic procedures using transcranial Doppler sonography. Middle cerebral artery blood flow velocity increased significantly from 52 +/- 6 (SEM) to 82 +/- 24 cm/s (an increase of 58% +/- 13%) within 4 +/- 1 min after tourniquet release and remained significantly elevated for 7 min. A positive linear correlation was found between middle cerebral artery blood flow velocity and PETCO2 on each occasion (0.97 greater than or equal to r greater than or equal to 0.84, 0.001 greater than P greater than 0.0001) after tourniquet deflation. Assuming a linear relationship between flow velocity and flow, these findings suggest that significant increase in cerebral blood flow can occur after intraoperative tourniquet release and that this increase appears to be mostly CO2-dependent.


Anesth Analg


Anesthesia and analgesia


Hirst RP,Slee TA,Lam AM




Has Abstract


1990-11-01 00:00:00












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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


    authors: Vloka JD,Hadzić A,April E,Thys DM

    更新日期:2001-01-01 00:00:00

  • Anesthetic action of opiates: correlations of lipid solubility and spectral edge.

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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


    authors: Stone DJ,DiFazio CA

    更新日期:1988-07-01 00:00:00

  • Readability, Content, and Quality Assessment of Web-Based Patient Education Materials Addressing Neuraxial Labor Analgesia.

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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章,多中心研究


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    更新日期:2015-11-01 00:00:00

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    journal_title:Anesthesia and analgesia

    pub_type: 临床试验,杂志文章


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    journal_title:Anesthesia and analgesia

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    journal_title:Anesthesia and analgesia

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    journal_title:Anesthesia and analgesia

    pub_type: 临床试验,杂志文章


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    journal_title:Anesthesia and analgesia

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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    pub_type: 杂志文章,多中心研究


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

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    pub_type: 临床试验,杂志文章,随机对照试验


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


    authors: Hao S,Takahata O,Iwasaki H

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    journal_title:Anesthesia and analgesia

    pub_type: 临床试验,杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    pub_type: 杂志文章


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    journal_title:Anesthesia and analgesia

    pub_type: 杂志文章


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    更新日期:1999-08-01 00:00:00