バルサルバ法は内頚動静脈のオーバーラップを減少させる

  • 北川 範仁
    佐賀医科大学医学部附属病院集中治療部
  • 中平 圭
    佐賀医科大学医学部附属病院麻酔科蘇生科
  • 小柳 博嗣
    佐賀医科大学医学部附属病院麻酔科蘇生科
  • 永澤 一郎
    佐賀医科大学医学部附属病院麻酔科蘇生科
  • 原野 清
    佐賀医科大学医学部附属病院麻酔科蘇生科
  • 十時 忠秀
    佐賀医科大学医学部附属病院麻酔科蘇生科

書誌事項

タイトル別名
  • Valsalva Maneuver Decreases the Overlap Between Internal Jugular Vein and Carotid Artery.

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説明

We evaluated the effect of the Valsalva maneuver on the overlap between the internal jugular vein (IJV) and the carotid artery (CA) and the change of the IJV diameter with an ultrasound technique. The advantage of the Valsalva maneuver for IJV cannulation was discussed. The percent overlap at the Valsalva maneuver (mean value 22.4%) significantly decreased (p<0.05) comparing to the percent overlap at rest (mean value 15.2%). In addition, the IJV was dilated toward both transverse and perpendicular directions by the Valsalva maneuver, significantly in the perpendicular direction (p<0.05). We demonstrated that the Valsalva maneuver not only dilated the IJV but also decreased the overlap between IJV and CA. This results show that the Valsalva maneuver at IJV cannulation decreases the risk of accidental CA puncture.

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