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Blood loss closely correlates with body mass index in total hip arthroplasty performed through direct lateral
Xiao-Wei Yu1, Zi-Sheng Ai, You-Shui Gao
1Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China.
Insights
Total blood loss (TBL), intraoperative blood loss (IBL), and post-operative drainage (POD) in total hip arthroplasty (THA) are significantly associated with body mass index (BMI). This finding is crucial for managing blood loss in THA patients.
Area of Science:
- Orthopedic Surgery
- Surgical Outcomes
- Patient Safety
Background:
- Total hip arthroplasty (THA) is a common procedure for hip joint disease.
- Managing blood loss during and after THA is critical for patient recovery and safety.
- The direct lateral approach for THA is widely used, but its impact on blood loss requires further investigation.
Purpose of the Study:
- To investigate total blood loss (TBL), intraoperative blood loss (IBL), and post-operative drainage (POD) in patients undergoing THA via a direct lateral approach.
- To identify factors associated with blood loss in THA, specifically focusing on patient demographics and operative variables.
Main Methods:
- A retrospective analysis of 113 patients who underwent THA using the direct lateral approach was conducted.
- Total blood loss (TBL) was calculated using the Gross formula, and recordable blood loss (RBL) was measured.
- Ordinal logistic regression was employed to analyze the correlation between TBL, IBL, and POD with independent variables including gender, age, body mass index (BMI), disease duration, and operative time.
Main Results:
- Average operative time was 51.5 minutes, with an average RBL of 454 ml.
- Average TBL was significantly higher at 975 ml (p<0.001).
- Body mass index (BMI) showed a strong correlation with TBL (OR=4.80), IBL (OR=5.39), and POD (OR=4.37).
Conclusions:
- Total blood loss (TBL), intraoperative blood loss (IBL), and post-operative drainage (POD) are significantly correlated with body mass index (BMI) in patients undergoing total hip arthroplasty (THA) via the direct lateral approach.
- BMI is a key predictor of blood loss in THA, highlighting its importance in pre-operative risk assessment and patient management.
- These findings contribute to a better understanding of blood loss patterns in THA and can inform strategies to minimize perioperative complications.
Objective:
To investigate total blood loss (TBL), intraoperative blood loss (IBL), post-operative drainage (POD), and other related variables in total hip arthroplasty (THA) performed through direct lateral approach.
Methods:
This study was completed in Shanghai Sixth People's Hospital, Shanghai, China, between January and December 2010. We analyzed 113 patients treated by THA through direct lateral approach. Recordable blood loss (RBL) was measured and TBL was calculated according to the Gross formula. Ordinal logistic regression analysis was used for TBL, IBL, and POD, with gender, age, body mass index (BMI), disease duration, and operative time as independent variables.
Results:
The average operative time was 51.5 +/- 10.4 (range: 35-70) minutes, with an average RBL of 454 +/- 144 (range: 150-180) ml. Average TBL was significantly higher (975 +/- 355, range: 430-2020 ml; p<0.001). In the analysis of variables, BMI closely correlated with TBL, IBL, and POD, with odds ratios of 4.80 (95% CI: 2.63-8.78 [TBL]), 5.39 (95% CI: 2.84-10.25 [IBL]), and 4.37 (95% CI: 2.43-7.89 [POD]). Moreover, TBL (54.172), IBL (55.198), and POD (39.139) correlated with trend test BMI.
Conclusion:
The TBL, IBL, and POD closely correlate with BMI in patients undergoing THA through direct lateral approach.
