Intraoperative blood loss in corrective surgery for adolescent idiopathic scoliosis is increased in thoracic lordosis

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  • 思春期特発性側弯症矯正手術における術中出血量は胸椎前弯で増大する

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Abstract

<p>Introduction: Blood loss in adolescent idiopathic scoliosis (AIS) has been linked to a number of factors. In this study, we hypothesized that sagittal alignment influences the amount of intraoperative blood loss.</p><p>Methods: From 2010 to 2020, we included 270 patients aged 12-20 years who underwent surgery at our hospital for Lenke type 1 and 2 AIS with a main curve Cobb angle of 40°−60°. Gender, BMI, number of fixed vertebrae, operation time, intraoperative blood loss (IBL), IBL/blood volume (BV = bodyweight × 75 mL), main curve Cobb angle, and thoracic kyphosis angle (TK; T5-12) were all evaluated. The bleeding that exceeded 40% of the circulating blood volume was classified as massive hemorrhage, and bleeding that was less than 40% was classified as non-massive hemorrhage. Moreover, the relationship between each parameter was investigated. TK ≥0° and <0° were also examined.</p><p>Results: The amount of blood loss was related to gender, BMI, number of fixed vertebrae, operation time, main Cobb angle, and TK. When the amount of blood loss in the groups with TK <0°and >0°was compared, the amount of blood loss in the group with TK <0° was higher.</p><p>Conclusion: Blood loss was associated with thoracic lordosis in AIS Lenke type 1 and 2 corrective surgeries.</p>

Journal

  • Journal of Spine Research

    Journal of Spine Research 13 (11), 1212-1216, 2022-11-20

    The Japanese Society for Spine Surgery and Related Research

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