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Individualized red-cell transfusion strategy for non-cardiac surgery in adults: a randomized controlled trial
Liao R, Liu J, Zhang W, Zheng H, Zhu Z, Sun H, Yu Z, Jia H, Sun Y, Qin L, et al
Chinese medical journal. 2023
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Abstract
BACKGROUND Red-cell transfusion is critical for surgery during the peri-operative period; however, the transfusion threshold remains controversial mainly owing to the diversity among patients. The patient's medical status should be evaluated before making a transfusion decision. Herein, we developed an individualized transfusion strategy using the West-China-Liu's Score based on the physiology of oxygen delivery/consumption balance and designed an open-label, multicenter, randomized clinical trial to verify whether it reduced red cell requirement as compared with that associated with restrictive and liberal strategies safely and effectively, providing valid evidence for peri-operative transfusion. METHODS Patients aged >14 years undergoing elective non-cardiac surgery with estimated blood loss > 1000 mL or 20% blood volume and hemoglobin concentration <10 g/dL were randomly assigned to an individualized strategy, a restrictive strategy following China's guideline or a liberal strategy with a transfusion threshold of hemoglobin concentration <9.5 g/dL. We evaluated two primary outcomes: the proportion of patients who received red blood cells (superiority test) and a composite of in-hospital complications and all-cause mortality by day 30 (non-inferiority test). RESULTS We enrolled 1182 patients: 379, 419, and 384 received individualized, restrictive, and liberal strategies, respectively. Approximately 30.6% (116/379) of patients in the individualized strategy received a red-cell transfusion, less than 62.5% (262/419) in the restrictive strategy (absolute risk difference, 31.92%; 97.5% confidence interval [CI]: 24.42-39.42%; odds ratio, 3.78%; 97.5% CI: 2.70-5.30%; P<0.001), and 89.8% (345/384) in the liberal strategy (absolute risk difference, 59.24%; 97.5% CI: 52.91-65.57%; odds ratio, 20.06; 97.5% CI: 12.74-31.57; P<0.001). No statistical differences were found in the composite of in-hospital complications and mortality by day 30 among the three strategies. CONCLUSION The individualized red-cell transfusion strategy using the West-China-Liu's Score reduced red-cell transfusion without increasing in-hospital complications and mortality by day 30 when compared with restrictive and liberal strategies in elective non-cardiac surgeries. TRIAL REGISTRATION ClinicalTrials.gov, NCT01597232.
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Topical Application of Tranexamic Acid Can Reduce Postoperative Blood Loss in Calcaneal Fractures: A Randomized Controlled Trial
Huang J, Guo H, Huang W, Tan X, Huang H, Zeng C
The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons. 2022
Abstract
The traditional lateral "L" approach is common for managing calcaneal fractures with a drawback of significant blood loss. Yet there are no prospective studies on the hemostatic effect of the topical use of tranexamic acid (TXA) in calcaneal fracture surgeries. The purpose of this study was to evaluate the role of topical administration of TXA in reducing postoperative blood loss in calcaneal fractures. Forty participants were randomly distributed into the TXA group (n = 20) and the control group (n = 20). All participants underwent the same surgery via the lateral "L" approach. At the end of the operation, the surgical wound was irrigated with 80 mL 0.5 g/L TXA in the TXA group and 80 mL 0.9% sodium chloride in the control group, followed by the routine use of a drainage tube when closing the incision. Then, 20 mL 0.5 g/L TXA (TXA group) or 20 mL 0.9% sodium chloride solution (control group) was injected retrogradely into the wound through the drainage tube, which was clipped for 30 minutes thereafter. There were no significant differences in the baseline data between the 2 groups (p > .05). There was significantly less blood loss in the first 24 hours and total blood loss postoperation in the TXA group (p < .01). The surgical wounds healed well after surgery in both groups with no complication. We concluded that topical application of TXA in calcaneal fracture surgeries is a safe and useful method that can reduce postoperative blood loss.
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Development and validation of a nomogram to predict intraoperative blood transfusion for gastric cancer surgery
Huang H, Cao M
Transfusion medicine (Oxford, England). 2021
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Editor's Choice
Abstract
OBJECTIVE To construct and validate a nomogram composed of preoperative variables to predict intraoperative blood transfusion for gastric cancer surgery. BACKGROUND Intraoperative transfusion for gastric cancer surgery is a common medical procedure that is associated with increased postoperative complications. METHODS A total of 999 patients who underwent gastrectomy between January 2010 and June 2019 were randomly allocated into the primary and validation cohorts in a 2:1 ratio. In the primary cohort, logistic analyses were performed to identify independent predictors for transfusion. Using the Akaike information criterion, selected variables were incorporated to construct a nomogram. Validations of the nomogram were performed in the primary and validation cohorts. The discrimination ability of the nomogram was assessed by the concordance index (C-index), and calibration was assessed by calibration curves and the Hosmer-Lemeshow goodness-of-fit test. RESULTS The following risk factors for transfusion were identified and used to construct the nomogram: ASA status (III-IV vs I-II: odds ratio [OR] 1.74), comorbidities (yes vs no: OR 1.57), tumour location (diffuse vs lower: OR 4.05), cTNM stage (III vs I: OR 1.95), and a preoperative haemoglobin level less than 80 g/L (vs over 120 g/L: OR 35.30). The C-index was 0.859 and 0.850 in the primary and validation cohorts, respectively, which both indicated good discrimination of the nomogram. Additionally, both calibration curves and Hosmer-Lemeshow tests (p-value 0.184 and 0.887, respectively) demonstrated high agreement between the predictions and actual outcomes. CONCLUSION A nomogram composed of preoperative variables to predict blood transfusion for gastric cancer surgery was effectively developed and validated. This nomogram could be used to improve the utilisation of red blood cells for gastrectomy.
PICO Summary
Population
Patients undergoing gastric cancer surgery (n= 999).
Intervention
Nomogram of preoperative variables to predict intraoperative blood transfusion (primary cohort, n= 666).
Comparison
Nomogram of preoperative variables to predict intraoperative blood transfusion (validation cohort, n= 333).
Outcome
The following risk factors for transfusion were identified and used to construct the nomogram: ASA (American Society of Anaesthesiologists) physical status, comorbidities, tumour location, Clinical Tumour-Lymph Node-Metastasis stage, and a preoperative haemoglobin level less than 80 g/L. The concordance index was 0.859 and 0.850 in the primary and validation cohorts, respectively, which both indicated good discrimination of the nomogram. Additionally, both calibration curves and Hosmer-Lemeshow tests demonstrated high agreement between the predictions and actual outcomes.
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Efficacy and safety of tranexamic acid for reducing blood loss in elderly patients with intertrochanteric fracture treated with intramedullary fixation surgery: A meta-analysis of randomized controlled trials
Luo X, Huang H, Tang X
Acta Orthop Traumatol Turc. 2020;54(1):4-14
Abstract
OBJECTIVE The aim of this study was to evaluate the efficacy and safety of tranexamic acid (TXA) in elderly patients with intertrochanteric fracture undergoing intramedullary fixation surgery. METHODS We searched MEDLINE, the Cochrane Library and EMBASE for published randomized clinical trials relevant to use of TXA in elderly patients with intertrochanteric fracture treated with intramedullary fixation surgery. Meta-analysis was performed according to the guidelines of the Cochrane Reviewer's Hand book. RESULTS Five trials assessing 540 patients were included for meta-analysis. The pooled results showed that the mean total blood loss in TXA group was significant lower than that in the control group (mean difference - 172.83, 95% CI -241.43 to -104.23; p<0.00001, fixed-effect model). The intra- and postoperative transfusion rate for the TXA group was 34.4% (91/264) and for the control group was 49.27% (136/276), and the relative risk was 0.71 (95% CI 0.52 to 0.97; p<0.03, random-effect model) with substantial heterogeneity (I2=63%, p=0.03). The overall incidence of thrombotic events was 6.43% (17/264) in the intravenous TXA group, 7.63% (21/275) in the control group, with no significant difference (relative risk 0.84, 95% CI 0.46 to 1.54; p=0.57, fixed-effect model). CONCLUSION The present evidence shows that TXA can significantly reduce total and hidden blood loss, transfusion rate, and do not increase the risk of thrombotic events in elderly patients with intertrochanteric fracture undergoing intramedullary fixation surgery. However, the impact of TXA on thrombotic events needs to be researched in more high-quality, large-sample randomized clinical trials. LEVEL OF EVIDENCE Level I Therapeutic Study.
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Tranexamic acid reduces hidden blood loss in the treatment of intertrochanteric fractures with PFNA: a single-center randomized controlled trial
Lei J, Zhang B, Cong Y, Zhuang Y, Wei X, Fu Y, Wei W, Wang P, Wen S, Huang H, et al
Journal of Orthopaedic Surgery and Research. 2017;12((1)):124.
Abstract
BACKGROUND Hidden blood loss is a major concern for patients undergoing hip surgery for intertrochanteric fracture. The objective of this study was to investigate whether tranexamic acid (TXA) could reduce postoperative hidden blood loss in patients undergoing hip surgery for intertrochanteric fracture. METHODS A total of 77 patients with intertrochanteric fracture were enrolled in this randomized controlled study. Patients received either 200 mL (1 g) of TXA (n = 37) or normal-saline (NS) (n = 40) i.v. before hip surgery using proximal femoral nail anti-rotation (PFNA). Hemoglobin and hematocrit levels were measured preoperatively and postoperatively at day 1 and 3. Visible and hidden blood loss volumes were calculated at postoperative day 3. RESULTS On postoperative day 3, the transfusion rate was significantly lower in the TXA group compared to the NS group, although mean hemoglobin and hematocrit levels were not significantly different between the two groups. However, the estimated hidden blood loss volume (210.09 +/- 202.14 mL vs. 359.35 +/- 290.12 mL; P < 0.05) and total blood loss volume (279.35 +/- 209.11 mL vs. 417.89 +/- 289.56 mL; P < 0.05) were significantly less in the TXA group compared to the NS group, respectively. CONCLUSION TXA significantly reduced postoperative hidden blood loss in patients with intertrochanteric fracture who underwent PFNA. (Registration number: ChiCTR-INR-16008134).