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Frontiers in Neurology 2024Tranexamic acid (TXA) is an antifibrinolytic drug associated with reduced blood loss in a range of surgical specialties. This meta-analysis aimed to compare the efficacy...
BACKGROUND
Tranexamic acid (TXA) is an antifibrinolytic drug associated with reduced blood loss in a range of surgical specialties. This meta-analysis aimed to compare the efficacy and safety of TXA in cervical surgery, focusing on its effects on intraoperative blood loss and related outcomes.
METHODS
We searched the PubMed, EMBASE, Medline, and Cochrane Library databases to identify all literature related to TXA used in cervical spinal surgery. Intraoperative blood loss, postoperative drainage volume, total blood loss, postoperative hematological variables, and complications were analyzed.
RESULTS
Eight trials met the inclusion criteria. The pooled results showed that intraoperative blood loss, total blood loss, and postoperative drainage volume were significantly lower in the TXA group than in the control group. The hemoglobin and hematocrit on postoperative day 1 was significantly higher in the TXA group than in the control group. There was no significant difference in complications between the two groups.
CONCLUSION
The available evidence indicates that TXA effectively reduces blood loss in cervical spinal surgery while maintaining a favorable safety profile, without increasing associated risks.
SYSTEMATIC REVIEW REGISTRATION
https://www.crd.york.ac.uk/prospero/, identifier CRD42023459652.
PubMed: 38770522
DOI: 10.3389/fneur.2024.1405773 -
Orthopaedic Surgery May 2024For elderly femoral neck fracture patients, anemia is one of the most common complications, increasing the risk of postoperative adverse events. Tranexamic acid (TXA)...
OBJECTIVE
For elderly femoral neck fracture patients, anemia is one of the most common complications, increasing the risk of postoperative adverse events. Tranexamic acid (TXA) has been widely applied to the perioperative blood management. However, the optimal route of TXA administration in elderly femoral neck fracture remains unclear. The aim of this study is to evaluate the efficacy and safety of oral and intravenous (IV) application of TXA in elderly patients with femoral neck fracture undergoing total hip arthroplasty (THA) and hemiarthroplasty (HA).
METHODS
All elderly patients aged over 65 years old diagnosed with femoral neck fracture admitted to the trauma orthopedics from August 1, 2020 to February 28, 2022 were enrolled in this prospective cohort study. Participants were divided into three groups: oral group: TXA 2g orally 2 h before incision; IV group: intravenous infusion of TXA 1g 15 min before incision; and control group: usual hemostatic method. The primary outcomes were total blood loss, allogeneic transfusion rate, and postoperative thromboembolic events. SPSS 23.0 (IBM, Armonk, NY, USA) was used for statistical analysis, and p ≤ 0.05 was considered statistically significant.
RESULTS
A total of 100 patients were enrolled, including 32 cases in the oral group, 34 cases in the IV group and 34 cases in the control group. Compared with the control group, the total perioperative blood loss in the oral and IV groups was significantly decreased (763.92 ± 358.64 mL vs 744.62 ± 306.88 mL vs 1250.60 ± 563.37 mL, p = 0.048). No significant difference was identified between the oral and IV groups (p = 0.970). The rate of allogeneic transfusion was lower in the oral and IV groups than in the control group, but the difference had no statistical significant (6 vs 5 vs 12, p = 0.108), However, subgroup analysis showed that the IV and oral groups in patients who underwent THA have significant lower transfusion rate compared with the control group (1 vs 3 vs 7, p = 0.02). During 6 months follow-up, no thromboembolic events were identified. Two patients (one from the oral group and one from the control group) died of respiratory failure. The cost of blood management from the oral group was significantly lower than IV (p < 0.001) and control groups (p = 0.009).
CONCLUSION
Elderly patients with femoral neck fracture undergoing THA can benefit from both IV and oral administration of tranexamic acid. The results of these two administration routes are similar in safety and effectiveness. A similar tendency was observed in patients undergoing HA. Oral TXA is more cost-benefit compared with intravenous applications.
PubMed: 38766813
DOI: 10.1111/os.14089 -
Medicine May 2024Amniotic fluid embolism (AFE) is a fatal obstetric condition that often rapidly leads to severe respiratory and circulatory failure. It is complicated by obstetric... (Review)
Review
RATIONALE
Amniotic fluid embolism (AFE) is a fatal obstetric condition that often rapidly leads to severe respiratory and circulatory failure. It is complicated by obstetric disseminated intravascular coagulation (DIC) with bleeding tendency; therefore, the introduction of venoarterial extracorporeal membrane oxygenation (VA-ECMO) is challenging. We report the case of a patient with AFE requiring massive blood transfusion, rescued using VA-ECMO without initial anticoagulation.
PATIENTS CONCERNS
A 39-year-old pregnant patient was admitted with a complaint of abdominal pain. An emergency cesarean section was performed because a sudden decrease in fetal heart rate was detected in addition to DIC with hyperfibrinolysis. Intra- and post-operatively, the patient had a bleeding tendency and required massive blood transfusions. After surgery, the patient developed lethal respiratory and circulatory failure, and VA-ECMO was introduced.
DIAGNOSIS
Based on the course of the illness and imaging findings, the patient was diagnosed with AFE.
INTERVENTIONS
By controlling the bleeding tendency with a massive transfusion and tranexamic acid administration, using an antithrombotic ECMO circuit, and delaying the initiation of anticoagulation and anti-DIC medication until the bleeding tendency settled, the patient was managed safely on ECMO without complications.
OUTCOMES
By day 5, both respiration and circulation were stable, and the patient was weaned off VA-ECMO. Mechanical ventilation was discontinued on day 6. Finally, she was discharged home without sequelae.
LESSONS
VA-ECMO may be effective to save the lives of patients who have AFE with lethal circulatory and respiratory failure. For safe management without bleeding complications, it is important to start VA-ECMO without initial anticoagulants and to administer anticoagulants and anti-DIC drugs after the bleeding tendency has resolved.
Topics: Humans; Female; Embolism, Amniotic Fluid; Extracorporeal Membrane Oxygenation; Adult; Pregnancy; Cesarean Section; Blood Transfusion; Tranexamic Acid; Disseminated Intravascular Coagulation; Anticoagulants
PubMed: 38758915
DOI: 10.1097/MD.0000000000038176 -
Zhongguo Xiu Fu Chong Jian Wai Ke Za... May 2024To explore the early effectiveness and influence on cartilage of local injection of multimodal drug cocktail (MDC) during anterior cruciate ligament reconstruction... (Randomized Controlled Trial)
Randomized Controlled Trial
OBJECTIVE
To explore the early effectiveness and influence on cartilage of local injection of multimodal drug cocktail (MDC) during anterior cruciate ligament reconstruction (ACLR).
METHODS
Between February 2022 and August 2023, patients undergone arthroscopic ACLR using autologous hamstring tendons were selected as the study subjects. Among them, 90 patients met the selection criteria and were randomly divided into 3 groups ( =30) according to the different injection drugs after ligament reconstruction. There was no significant difference in baseline data such as gender, age, body mass index, surgical side, disease duration, preoperative thigh circumference, and preoperative levels of tumor necrosis factor α (TNF-α), interleukin 6 (IL-6), IL-1, matrix metalloproteinase 3 (MMP-3), MMP-13, and aggrecan (ACAN) in synovial fluid between groups ( >0.05). After the ligament reconstruction during operation, corresponding MDC (consisting of ropivacaine, tranexamic acid, and betamethasone in group A, and ropivacaine, betamethasone, and saline in group B) or saline (group C) were injected into the joint and tendon site, respectively. The length of hospital stay, postoperative tramadol injection volume, incidence of complications, degree of knee joint swelling and range of motion, visual analogue scale (VAS) score, International Knee Documentation Committee (IKDC) score, Lyshlom score, and Hospital for Special Surgery (HSS) score were recorded and compared between groups. The T2 values in different cartilage regions were detected by MRI examination and the levels of TNF-α, IL-6, IL-1, MMP-3, MMP-13, and ACAN in synovial fluid were detected by ELISA method.
RESULTS
The patients in group A, B, and C were followed up (12.53±3.24), (13.14±2.87), and (12.82±3.32) months, respectively. All incisions healed by first intention. Compared with group C, group A and group B had shorter length of hospital stay, less tramadol injection volume, and lower incidence of complications, showing significant differences ( <0.05); there was no significant difference between group A and group B ( >0.05). The degree of knee swelling in group A was significantly less than that in group B and group C ( <0.05), but there was no significant difference between group B and group C ( >0.05). At 3, 6, 12, 24, and 48 hours after operation, VAS scores of group A and group B were significantly lower than those of group C ( <0.05); at 72 hours after operation, there was no significant difference among the three groups ( >0.05). At 3 days, 14 days, and 1 month after operation, the range of motion of knee joint in group A were significantly better than those in group C ( <0.05), and there was no significant difference between the other groups ( >0.05). At 1 month after operation, the IKDC score of group A and group B was significantly higher than that of group C ( <0.05); there was no significant difference among the three groups at other time points ( >0.05). There was no significant difference in Lyshlom score and HSS score among the three groups at each time point ( >0.05). At 14 days after operation, the levels of IL-1 and IL-6 in the synovial fluid in groups A and B were significantly lower than those in group C ( <0.05). There was no significant difference in the levels of TNF-α, MMP-3, MMP-13, and ACAN between groups A and B ( >0.05). At 1 month after operation, there was no significant difference in the above indicators among the three groups ( >0.05). At 3, 6, and 12 months after operation, there was no significant difference in the T2 values of different cartilage regions among the three groups ( >0.05).
CONCLUSION
Injecting MDC (ropivacaine, tranexamic acid, betamethasone) into the joint and tendon site during ACLR can achieve good early effectiveness without significant impact on cartilage.
Topics: Humans; Anterior Cruciate Ligament Reconstruction; Ropivacaine; Male; Betamethasone; Female; Adult; Matrix Metalloproteinase 3; Anesthetics, Local; Arthroscopy; Anterior Cruciate Ligament Injuries; Aggrecans; Matrix Metalloproteinase 13; Anterior Cruciate Ligament; Treatment Outcome; Tendons; Cartilage; Tumor Necrosis Factor-alpha
PubMed: 38752242
DOI: 10.7507/1002-1892.202402054 -
Scientific Reports May 2024Intravenous application of tranexamic acid (TXA) in posterior lumbar interbody fusion (PLIF) can effectively reduce blood loss without affecting coagulation function....
Intravenous application of tranexamic acid (TXA) in posterior lumbar interbody fusion (PLIF) can effectively reduce blood loss without affecting coagulation function. However, it has not been reported whether preoperative use of anticoagulants may affect the efficacy of TXA in PLIF. The purpose of this study is to observe the effect of preoperative use of anticoagulants on coagulation indicators and blood loss after PLIF receiving intravenous unit dose TXA. A retrospective analysis was conducted on data from 53 patients with PLIF between 2020.11 and 2022.9, who received intravenous application of a unit dose of TXA (1 g/100 mL) 15 min before the skin incision after general anesthesia. Those who used anticoagulants within one week before surgery were recorded as the observation group, while those who did not use anticoagulants were recorded as the control group. The main observation indicators include surgical time, intraoperative blood loss, postoperative drainage volume, blood transfusion, and red blood cell (RBC), hemoglobin (HB), and hematocrit (HCT) measured on the 1st, 4th, 7th, and last-test postoperative days. Secondary observation indicators included postoperative incision healing, deep vein thrombosis of lower limbs, postoperative hospital stay, and activated partial thrombin time (APTT), prothrombin time (PT), thrombin time (TT), fibrinogen (FIB), and platelets (PLT) on the 1st and 4th days after surgery. The operation was successfully completed in both groups, the incision healed well after operation, and no lower limb deep vein thrombosis occurred. There was no significant difference in surgical time, intraoperative blood loss, postoperative drainage volume, and blood transfusion between the two groups (p > 0.05). There was no significant difference in the RBC, HB, and HCT measured on the 1st, 4th, 7th, and last-test postoperative days between the two groups (p > 0.05). There was no statistically significant difference in APTT, PT, TT, FIB and PLT between the two groups on the 1st and 4th postoperative days (p > 0.05). There was no significant difference in postoperative hospital stay between the two groups (p > 0.05). The use of anticoagulants within one week before surgery does not affect the hemostatic effect of intravenous unit dose TXA in PLIF.
Topics: Humans; Tranexamic Acid; Female; Male; Middle Aged; Retrospective Studies; Case-Control Studies; Anticoagulants; Blood Loss, Surgical; Aged; Administration, Intravenous; Spinal Fusion; Preoperative Care; Antifibrinolytic Agents; Blood Coagulation
PubMed: 38744855
DOI: 10.1038/s41598-024-60440-9 -
Lipids in Health and Disease May 2024Skin barrier alterations play a crucial function in melasma development. Past researches have demonstrated variations in lipid content between the epidermis of melasma... (Comparative Study)
Comparative Study
BACKGROUND
Skin barrier alterations play a crucial function in melasma development. Past researches have demonstrated variations in lipid content between the epidermis of melasma lesions and normal tissues, along with the varied expression of lipid-related genes in melasma. This study aimed to analyze the lipidome profiles of skin surface lipids (SSL) in patients with melasma before and after treatment to understand associated abnormalities.
METHODS
Melasma was treated with tranexamic acid orally and hydroquinone cream topically. Disease was assessed using the Melasma Area and Severity Index (MASI), and the impact to life was evaluated with Melasma Quality of Life (MELASQoL) score. Epidermal melanin particles were observed using reflection confocal microscopy (RCM), whereas epidermal pigment and blood vessel morphology were observed using dermoscopy, and SSL samples were collected. Specific information regarding alterations in lipid composition was obtained through multivariate analysis of the liquid chromatography-mass spectrometry data.
RESULTS
After treatment, patients with melasma exhibited decreased MASI and MELASQoL scores (P < 0.001); RCM revealed reduced melanin content in the lesions, and dermoscopy revealed fewer blood vessels. Fifteen lipid subclasses and 382 lipid molecules were identified using lipidomic assays. The expression levels of total lipids, phosphatidylcholine, and phosphatidylethanolamine in the melasma lesions decreased after treatment (P < 0.05).
CONCLUSION
This study revealed alterations in the SSL composition after effective melasma treatment, suggesting a compensatory role for lipids in melasma barrier function. The mechanism involving SSL and the lipid barrier, which influences melasma's occurrence, needs further elucidation.
Topics: Humans; Melanosis; Female; Adult; Lipidomics; Quality of Life; Hydroquinones; Tranexamic Acid; Middle Aged; Melanins; Male; Lipids; Epidermis; Phosphatidylethanolamines; Phosphatidylcholines; Skin; Lipid Metabolism
PubMed: 38734619
DOI: 10.1186/s12944-024-02130-z -
Frontiers in Immunology 2024Relapsing fever (RF) remains a neglected human disease that is caused by a number of diverse pathogenic () species. Characterized by high cell densities in human blood,...
INTRODUCTION
Relapsing fever (RF) remains a neglected human disease that is caused by a number of diverse pathogenic () species. Characterized by high cell densities in human blood, relapsing fever spirochetes have developed plentiful strategies to avoid recognition by the host defense mechanisms. In this scenario, spirochetal lipoproteins exhibiting multifunctional binding properties in the interaction with host-derived molecules are known to play a key role in adhesion, fibrinolysis and complement activation.
METHODS
Binding of CihC/FbpC orthologs to different human proteins and conversion of protein-bound plasminogen to proteolytic active plasmin were examined by ELISA. To analyze the inhibitory capacity of CihC/FbpC orthologs on complement activation, a microtiter-based approach was performed. Finally, AlphaFold predictions were utilized to identified the complement-interacting residues.
RESULTS AND DISCUSSION
Here, we elucidate the binding properties of CihC/FbpC-orthologs from distinct RF spirochetes including , , , and to human fibronectin, plasminogen, and complement component C1r. All CihC/FbpC-orthologs displayed similar binding properties to fibronectin, plasminogen, and C1r, respectively. Functional studies revealed a dose dependent binding of plasminogen to all borrelial proteins and conversion to active plasmin. The proteolytic activity of plasmin was almost completely abrogated by tranexamic acid, indicating that lysine residues are involved in the interaction with this serine protease. In addition, a strong inactivation capacity toward the classical pathway could be demonstrated for the wild-type CihC/FbpC-orthologs as well as for the C-terminal CihC fragment of . Pre-incubation of human serum with borrelial molecules except CihC/FbpC variants lacking the C-terminal region protected serum-susceptible cells from complement-mediated lysis. Utilizing AlphaFold2 predictions and existing crystal structures, we mapped the putative key residues involved in C1r binding on the CihC/FbpC orthologs attempting to explain the relatively small differences in C1r binding affinity despite the substitutions of key residues. Collectively, our data advance the understanding of the multiple binding properties of structural and functional highly similar molecules of relapsing fever spirochetes proposed to be involved in pathogenesis and virulence.
Topics: Humans; Fibrinolysis; Borrelia; Relapsing Fever; Plasminogen; Protein Binding; Bacterial Proteins; Complement Activation; Immune Evasion; Bacterial Adhesion; Host-Pathogen Interactions; Fibronectins; Fibrinolysin; Complement System Proteins
PubMed: 38726006
DOI: 10.3389/fimmu.2024.1390468 -
Fertility and Sterility May 2024Uterine fibroids (UFs) are the most common female benign pelvic tumors, affecting over 60% of patients aged 30-44 years. UFs are asymptomatic in a large percentage of... (Review)
Review
Uterine fibroids (UFs) are the most common female benign pelvic tumors, affecting over 60% of patients aged 30-44 years. UFs are asymptomatic in a large percentage of cases and may be identified incidentally by a transvaginal ultrasound or a magnetic resonance. However, in around 30% of cases UFs affect quality of life (QoL) and women's health, being abnormal uterine bleeding (AUB) and heavy menstrual bleeding (HMB) the most common complaints, along with iron deficiency (ID) and ID anemia (IDA). Medical treatments used for UFs-related AUB include symptomatic agents, such as nonsteroidal anti-inflammatory drugs and tranexamic acid, and hormonal therapies, including combined oral contraceptives, gonadotropin-releasing hormone (GnRH) agonists or antagonists, levonorgestrel intrauterine systems, selective progesterone receptors modulators and aromatase inhibitors. Nevertheless, few drugs are approved specifically for UFs treatment and most of them manage the symptoms. Surgical options include fertility-sparing treatments, such as myomectomy, or non-conservative options, as hysterectomy, especially in perimenopausal women not responding to any treatment. Radiological interventions are also available: uterine artery embolization, high-intensity focused ultrasound or magnetic resonance-guided focused ultrasound, radiofrequency ablation. Furthermore, the management of ID and IDA, as a consequence of acute and chronic bleeding, should be taken into account by using iron replacement therapy both during medical treatment and before and after a surgical procedure. In case of symptomatic UFs, the location, size, multiple UFs or coexistent adenomyosis should guide the choice with a shared decision-making, considering long- and short-term treatment goals expected by the patient, including pregnancy desire or wish to preserve the uterus independently of reproductive goals.
PubMed: 38723935
DOI: 10.1016/j.fertnstert.2024.04.041 -
BMJ Open May 2024By implementation of Enhanced Recovery After Bariatric Surgery protocols and day-care surgery, early discharge poses a challenge if excessive bleeding occurs after...
Peroperative administration of tranexamic acid in Roux-en-Y and one-anastomosis gastric bypass to reduce haemorrhage in patients with morbid obesity: protocol for randomised controlled trial (PATRY trial).
INTRODUCTION
By implementation of Enhanced Recovery After Bariatric Surgery protocols and day-care surgery, early discharge poses a challenge if excessive bleeding occurs after bariatric surgery. Tranexamic acid (TXA) has demonstrated efficacy in other surgical fields and in bariatric pilot studies. This trial aims to assess the efficacy of peroperative administration of TXA in reducing haemorrhage in patients undergoing gastric bypass surgery.
METHOD AND ANALYSIS
This is a multicentre, phase III, double-blind randomised controlled trial in six high-volume bariatric centres in the Netherlands. A total of 1524 eligible patients, aged 18 years or older, undergoing primary gastric bypass surgery (either Roux-en-Y gastric bypass or one-anastomosis gastric bypass) will be randomised between TXA and placebo (1:1, variable block, stratified for centre, day-care/overnight stay and type of surgery) after obtaining informed consent (2.5% less haemorrhage, power 80%, 2-sided-α 0.05 and 10% dropout). Exclusion criteria are pregnancy, amedical history of acute bleeding (without cause), venous thrombotic events (VTEs), epilepsy, anticoagulant use and iatrogenic bleeding during surgery (aside from staple line). The primary outcome is postoperative haemorrhage requiring intervention within 30 days postoperatively. Secondary outcome measures are staple line reinforcement, blood loss, duration of surgery, postoperative haemoglobin, vital parameters, minor and major complications, side effects of TXA (nausea, hypotension and VTE), length of hospital stay and directly made costs.
ETHICS AND DISSEMINATION
Written informed consent will be obtained from all participants. The protocol has been approved by the Medical Research Ethics Committees United, Nieuwegein, on 7 February 2023 (registration number: R22.102). Results will be disseminated through peer-reviewed publications and conferences.
TRIAL REGISTRATION NUMBER
NCT05464394.
Topics: Humans; Tranexamic Acid; Gastric Bypass; Obesity, Morbid; Antifibrinolytic Agents; Double-Blind Method; Postoperative Hemorrhage; Randomized Controlled Trials as Topic; Female; Multicenter Studies as Topic; Adult; Netherlands; Clinical Trials, Phase III as Topic; Male
PubMed: 38719323
DOI: 10.1136/bmjopen-2023-078853 -
BMJ Open May 2024There are no globally agreed on strategies on early detection and first response management of postpartum haemorrhage (PPH) during and after caesarean birth. Our study...
Strategies for optimising early detection and obstetric first response management of postpartum haemorrhage at caesarean birth: a modified Delphi-based international expert consensus.
OBJECTIVE
There are no globally agreed on strategies on early detection and first response management of postpartum haemorrhage (PPH) during and after caesarean birth. Our study aimed to develop an international expert's consensus on evidence-based approaches for early detection and obstetric first response management of PPH intraoperatively and postoperatively in caesarean birth.
DESIGN
Systematic review and three-stage modified Delphi expert consensus.
SETTING
International.
POPULATION
Panel of 22 global experts in PPH with diverse backgrounds, and gender, professional and geographic balance.
OUTCOME MEASURES
Agreement or disagreement on strategies for early detection and first response management of PPH at caesarean birth.
RESULTS
Experts agreed that the same PPH definition should apply to both vaginal and caesarean birth. For the intraoperative phase, the experts agreed that early detection should be accomplished via quantitative blood loss measurement, complemented by monitoring the woman's haemodynamic status; and that first response should be triggered once the woman loses at least 500 mL of blood with continued bleeding or when she exhibits clinical signs of haemodynamic instability, whichever occurs first. For the first response, experts agreed on immediate administration of uterotonics and tranexamic acid, examination to determine aetiology and rapid initiation of cause-specific responses. In the postoperative phase, the experts agreed that caesarean birth-related PPH should be detected primarily via frequently monitoring the woman's haemodynamic status and clinical signs and symptoms of internal bleeding, supplemented by cumulative blood loss assessment performed quantitatively or by visual estimation. Postoperative first response was determined to require an individualised approach.
CONCLUSION
These agreed on proposed approaches could help improve the detection of PPH in the intraoperative and postoperative phases of caesarean birth and the first response management of intraoperative PPH. Determining how best to implement these strategies is a critical next step.
Topics: Humans; Postpartum Hemorrhage; Female; Cesarean Section; Pregnancy; Delphi Technique; Consensus; Early Diagnosis; Tranexamic Acid
PubMed: 38719306
DOI: 10.1136/bmjopen-2023-079713