Abstract
BackgroundBlood loss during hemivertebra resection may be substantial. Few studies have examined the risk factors of blood loss undergoing hemivertebra resection, especially those in patients under 10 years old.MethodsPatients under 10 years old diagnosed with congenital scoliosis and hemivertebra were retrospectively included from January 2014 to October 2017. They all had primary posterior hemivertebra resection at Peking Union Medical College Hospital. Perioperative information was collected and multivariable linear logistic regression was performed to determine the independent risk factors of blood loss.ResultsOne hundred three patients were included. The mean total blood loss was 346 + 178 ml. The percentage of total blood loss to the EBV was 27.0 + 13.3%. Multivariable linear logistic regression indicated that preoperative total Cobb angle (P = 0.046) and the number of fused levels (P < 0.001) were independent risk factors of total blood loss. Preoperative platelet count and preoperative coagulation function were not associated with blood loss in patients undergoing hemivertebra resection.ConclusionsPreoperative total Cobb angle and the number of fused levels determined the blood loss for patients undergoing hemivertebra resection.
Highlights
Blood loss during hemivertebra resection may be substantial
Our study demonstrated that for patients undergoing primary posterior hemivertebra resection, perioperative blood loss was predicted by preoperative total Cobb angel and the number of fused levels
Blood loss was assessed by both intraoperative blood loss and postoperative drainage, while most previous studies focused on only intraoperative blood loss [6,7,8]
Summary
Blood loss during hemivertebra resection may be substantial. Few studies have examined the risk factors of blood loss undergoing hemivertebra resection, especially those in patients under 10 years old. Hemivertebra is a common cause for congenital scoliosis. It has growth potential and can lead to spine deformity. Posterior resection of hemivertebrae with transpedicular instrumentation has been proven as a safe procedure for the correction of congenital scoliosis [1]. Spine surgery is usually complex and associated with blood loss, placing patients at a high risk of allogeneic transfusion [2]. Allogenic transfusions have potential risks, including transfusion transmitted infection, fever, transfusion associated circulatory overload, immunologic and allergic
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