The Further Exploration of Hidden Blood Loss in Posterior Lumbar Fusion Surgery

Abstract Purpose Hidden blood loss (HBL) plays an important role in lumbar fusion surgery.However, there was huge computation error when calculating hidden loss in previous studiesbecause they regarded the volume of drainage as postoperative blood loss.Weshould not ignore the fact that the compositi...

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Bibliographic Details
Published in:Orthopaedics & traumatology, surgery & research surgery & research, 2017-06, Vol.103 (4), p.527-530
Main Authors: Xu, Derong, Ren, Zhinan, Chen, Xin, Zhuang, Qianyu, Hui, Shangyi, Sheng, Lin, Li, Shugang
Format: Article
Language:English
Subjects:
Blood Loss, Surgical
Case-Control Studies
Female
Hidden blood loss
Humans
Lumbar fusion surgery
Lumbar Vertebrae - surgery
Male
Middle Aged
Orthopedics
Recommendable calculation method
Reproducibility of Results
Spinal Fusion - adverse effects
Spinal Fusion - methods
Spinal Stenosis - surgery
Surgery
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Summary:Abstract Purpose Hidden blood loss (HBL) plays an important role in lumbar fusion surgery.However, there was huge computation error when calculating hidden loss in previous studiesbecause they regarded the volume of drainage as postoperative blood loss.Weshould not ignore the fact that the composition of drainage varies from person to person and also with time-lapse after operation.The purpose of this study was to demonstrate a more accurate HBL calculation formula by comparing it with previous formula and to address the importance of HBL in patients undergoing posterior lumbar fusion surgeries. Methods For each patient, the HBL was calculated by previous formula and our recommendable formula.We compared the result ofHBL calculated by two different methods.At the same time, we explored the HBL in patients undergoing posterior lumbar fusion surgeries with various levels. Results In our study, the average total blood loss was 771 ml. The mean intraoperative blood loss was 268 ml, and the total volume of post-operative drainage is 276 ml. The mean hidden loss of 90 patients calculated with previous method was 227 ml and 29.4% of total loss. When taking change of drainage HCT into account, the mean hidden loss calculated with our recommendable method was 362.8 mland 47% of total loss. The results were significantly different(P
ISSN:1877-0568
1877-0568
DOI:10.1016/j.otsr.2017.01.011