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1.
Platelets ; 35(1): 2363242, 2024 Dec.
Article de Anglais | MEDLINE | ID: mdl-38860550

RÉSUMÉ

Septic shock is a life-threatening disease worldwide often associated with thrombocytopenia. Platelets play a crucial role in bridging the gap between immunity, coagulation, and endothelial cell activation, potentially influencing the course of the disease. However, there are few studies specifically evaluating the impact of thrombocytopenia on the prognosis of pediatric patients. Therefore, the study investigates effects of early thrombocytopenia in the prognosis of children with septic shock. Pediatric patients with septic shock from 2015 to 2022 were included monocentrically. Thrombocytopenia was defined as a platelet count of <100 × 109/L during the first 24 hours of septic shock onset. The primary outcome was the 28-day mortality. Propensity score matching was used to pair patients with different platelet counts on admission but comparable disease severity. A total of 419 pediatric patients were included in the analysis. Patients with thrombocytopenia had higher 28-day mortality (55.5% vs. 38.7%, p = .005) compared to patients with no thrombocytopenia. Thrombocytopenia was associated with reduced 28-PICU free days (median value, 0 vs. 13 days, p = .003) and 28-ventilator-free (median value, 0 vs. 19 days, p = .001) days. Among thrombocytopenia patients, those with platelet count ≤50 × 109/L had a higher 28-day mortality rate (63.6% vs. 45%, p = .02). Multiple logistic regression showed that elevated lactate (adjusted odds ratio (OR) = 1.11; 95% confidence interval (CI): 1.04-1.17; P <0.001) and white blood cell (WBC) count (OR = 0.97; 95% CI: 0.95-0.99; p = .003) were independent risk factors for the development of thrombocytopenia. Thrombocytopenia group had increased bleeding events, blood product transfusions, and development of organ failure. In Kaplan-Meier survival estimates, survival probabilities at 28 days were greater in patients without thrombocytopenia (p value from the log-rank test, p = .004). There were no significant differences in the type of pathogenic microorganisms and the site of infection between patients with and without thrombocytopenia. In conclusion, thrombocytopenia within 24 hours of shock onset is associated with an increased risk of 28-day mortality in pediatric patients with septic shock.


What is the context? Septic shock is a life-threatening disease worldwide, leading to higher mortality.Platelets play a crucial role in bridging the gap between immunity, coagulation, and endothelial cell activation.Although it is known that platelets are associated with prognosis, most studies have focused on adult populations. Limited data are available on the incidence of thrombocytopenia and its correlation with clinical outcomes , specifically, in pediatric patients with sepsis and septic shock. What is new? The present study suggests that thrombocytopenia within 24 hours of septic shock onset reflects a reliable tool for predicting the prognosis of septic shock in pediatric patients.Furthermore, elevated lactate and reduced white-blood-cell count were independent risk factors for the development of thrombocytopenia in pediatric patients with septic shock. What is the impact? This study suggests that thrombocytopenia within 24 hours of septic shock onset is associated with an increased risk of 28-day mortality and decreased ventilation-free, PICU-free days in pediatric patients with septic shock. In septic shock, thrombocytopenia is also associated with increased bleeding events, blood product transfusions, and organ dysfunction.


Sujet(s)
Choc septique , Thrombopénie , Humains , Thrombopénie/complications , Thrombopénie/sang , Choc septique/complications , Choc septique/mortalité , Choc septique/sang , Mâle , Femelle , Pronostic , Études rétrospectives , Enfant , Enfant d'âge préscolaire , Nourrisson , Numération des plaquettes/méthodes
2.
PLoS One ; 19(5): e0301359, 2024.
Article de Anglais | MEDLINE | ID: mdl-38787838

RÉSUMÉ

BACKGROUND: Thrombosis with thrombocytopenia syndrome (TTS) is a very rare prothrombotic disorder that is a safety concern for some COVID-19 vaccines. We aimed to devise a case definition to estimate the incidence of thrombosis with thrombocytopenia as a proxy for TTS in a national insurance claims database. METHODS: We conducted a retrospective observational study using the National Health Insurance Research Database (NHIRD) in Taiwan over the three-year period prior to the SARS-COV-2 pandemic (2017-2019). Our case definition was all patients with newly diagnosed thrombosis co-occurring with a diagnosis of thrombocytopenia within seven days before or after the thrombosis diagnosis. Cases were identified using International Classification of Disease-10 codes. FINDINGS: We identified 2010 patients with newly diagnosed thrombosis co-occurring with thrombocytopenia during the study period. The mean age was 64.71 years; female:male ratio 1:1.45. The most frequent thrombotic events were coronary artery disease (18.81%), cerebral infarction (16.87%), and disseminated intravascular coagulation (13.13%). Cerebral venous sinus thrombosis was rare (<0.1%). The average annual incidence rate of co-occurring new diagnoses of thrombosis and thrombocytopenia was 2.84 per 100 000 population. Incidence rates were higher in men than women, except in 20-39 year-olds (higher in females). 20.6% of patients died within the first month after diagnosis. INTERPRETATION: We observed that the demographic and clinical characteristics of thrombosis with co-occurring thrombocytopenia using our case definition is different from that of TTS. Further research is needed to refine the case definition of TTS in the post-COVID-19 vaccination period.


Sujet(s)
COVID-19 , Thrombopénie , Thrombose , Humains , Femelle , Mâle , Adulte d'âge moyen , COVID-19/complications , COVID-19/épidémiologie , Thrombopénie/épidémiologie , Thrombopénie/complications , Incidence , Thrombose/épidémiologie , Thrombose/étiologie , Thrombose/complications , Sujet âgé , Études rétrospectives , Taïwan/épidémiologie , Adulte , SARS-CoV-2/isolement et purification , Jeune adulte , Sujet âgé de 80 ans ou plus , Bases de données factuelles , Adolescent , Pandémies
3.
BMC Infect Dis ; 24(1): 382, 2024 Apr 08.
Article de Anglais | MEDLINE | ID: mdl-38589812

RÉSUMÉ

BACKGROUND: Hemophagocytic lymphohistiocytosis (HLH) is a severe disorder characterized by excessive activation of the immune system, leading to hypercytokinemia and damage to multiple organs. We report a rare case of HLH with myopericarditis caused by Campylobacter infection. CASE PRESENTATION: A 28-year-old male patient with a history of hypertension without medicine control presented at the hospital after a four-day fever, decreasing urine amount, rashes on his trunk and limbs, and other symptoms. He was admitted with a provisional diagnosis of atypical infection and allergic skin rash related to diclofenac. However, his condition deteriorated, and he developed shock, tachycardia, chest distress, and bilateral pleural effusion after admission. Further investigations revealed cardiogenic shock related to myopericarditis, and he was transferred to the ICU. In addition, a stool PCR panel subsequently revealed a positive result for Campylobacter. On day 6, he was diagnosed with HLH. Under Clarithromycin and dexamethasone infusion, leukocytosis, anemia and thrombocytopenia with cardiogenic shock status improved. Then, he was later discharged in stable condition. CONCLUSIONS: HLH and myopericarditis caused by Campylobacter are very rare. Early detection of Campylobacter-induced HLH and multiple organ failure, as well as prompt use of antibiotics and immunosuppressants, can be helpful for prognosis.


Sujet(s)
Anémie , Campylobacter , Lymphohistiocytose hémophagocytaire , Myocardite , Thrombopénie , Mâle , Humains , Adulte , Lymphohistiocytose hémophagocytaire/diagnostic , Lymphohistiocytose hémophagocytaire/traitement médicamenteux , Lymphohistiocytose hémophagocytaire/étiologie , Choc cardiogénique/étiologie , Choc cardiogénique/complications , Anémie/complications , Thrombopénie/complications , Myocardite/diagnostic , Myocardite/complications
4.
Front Cell Infect Microbiol ; 14: 1351607, 2024.
Article de Anglais | MEDLINE | ID: mdl-38562965

RÉSUMÉ

Objective: Thrombocytopenia is commonly associated with infectious diseases and serves as an indicator of disease severity. However, reports on its manifestation in conjunction with Klebsiella pneumoniae liver abscess (KPLA) are scarce. The present study sought to elucidate the correlation between thrombocytopenia and KPLA severity and delve into the etiological factors contributing to the incidence of thrombocytopenia. Materials and methods: A retrospective analysis of the clinical data from patients with KPLA admitted between June 2012 and June 2023 was performed. Baseline characteristics, biochemical assessments, therapeutic interventions, complications, and clinical outcomes were compared between patients with and without thrombocytopenia. To investigate the potential etiologies underlying thrombocytopenia, the association between platelet count reduction and thrombophlebitis was examined, with a particular focus on platelet consumption. Furthermore, bone marrow aspiration results were evaluated to assess platelet production anomalies. Results: A total of 361 KPLA patients were included in the study, among whom 60 (17%) had concurrent thrombocytopenia. Those in the thrombocytopenia group exhibited significantly higher rates of thrombophlebitis (p = 0.042), extrahepatic metastatic infection (p = 0.01), septic shock (p = 0.024), admissions to the intensive care unit (p = 0.002), and in-hospital mortality (p = 0.045). Multivariate analysis revealed that thrombocytopenia (odds ratio, 2.125; 95% confidence interval, 1.114-4.056; p = 0.022) was independently associated with thrombophlebitis. Among the thrombocytopenic patients, eight underwent bone marrow aspiration, and six (75%) had impaired medullar platelet production. After treatment, 88.6% of thrombocytopenic patients (n = 47) demonstrated recovery in their platelet counts with a median recovery time of five days (interquartile range, 3-6 days). Conclusions: Thrombocytopenia in patients with KPLA is indicative of increased disease severity. The underlying etiologies for thrombocytopenia may include impaired platelet production within the bone marrow and augmented peripheral platelet consumption as evidenced by the presence of thrombophlebitis.


Sujet(s)
Infections à Klebsiella , Abcès du foie , Thrombopénie , Thrombophlébite , Humains , Études rétrospectives , Klebsiella pneumoniae , Infections à Klebsiella/complications , Infections à Klebsiella/épidémiologie , Abcès du foie/épidémiologie , Thrombopénie/complications , Acuité des besoins du patient , Thrombophlébite/complications
5.
Z Geburtshilfe Neonatol ; 228(3): 298-302, 2024 Jun.
Article de Allemand | MEDLINE | ID: mdl-38428835

RÉSUMÉ

The Kasabach-Merrit syndrome is characterized as the association of a vascular tumor, typically a caposiform hemangioendothelioma and rarely a tufted hemangioma, and a severe consumptive coagulopathy with potentially life-threatening thrombocytopenia. The severe coagulopathy with increased bleeding tendency must be considered before invasive procedures and often requires repeated platelet concentrate substitutions. We present a case of a mature male neonate with Kasabach-Merritt- Syndrome as well as VACTERL association. The VACTERL association describes a group of malformations. Our patient presented with anal atresia combined with tethered cord, and left renal agenesis. The VACTERL association as well as Kasabach-Merritt syndrome were found to be independent pathologies within this patient. A common occurrence or an association with each other has not been described in the literature so far. The challenging coagulation setting due to severe thrombocytopenia complicated the surgical management so far. Finally, mTOR-inhibitor sirolimus was successful in terms of tumor reduction and especially reduction of platelet consumption.


Sujet(s)
Canal anal , Oesophage , Cardiopathies congénitales , Syndrome de Kasabach-Merritt , Rein , Anomalies morphologiques congénitales des membres , Trachée , Humains , Syndrome de Kasabach-Merritt/complications , Syndrome de Kasabach-Merritt/diagnostic , Syndrome de Kasabach-Merritt/thérapie , Mâle , Nouveau-né , Anomalies morphologiques congénitales des membres/complications , Anomalies morphologiques congénitales des membres/diagnostic , Cardiopathies congénitales/complications , Cardiopathies congénitales/diagnostic , Rein/malformations , Trachée/malformations , Trachée/chirurgie , Canal anal/malformations , Canal anal/chirurgie , Oesophage/malformations , Sirolimus/usage thérapeutique , Thrombopénie/complications , Thrombopénie/thérapie , Thrombopénie/diagnostic , Thrombopénie/congénital , Rachis/malformations
6.
Zhejiang Da Xue Xue Bao Yi Xue Ban ; 53(2): 175-183, 2024 Apr 25.
Article de Anglais, Chinois | MEDLINE | ID: mdl-38531768

RÉSUMÉ

OBJECTIVES: To investigate the safety of early antiplatelet therapy for non-cardioembolic mild stroke patients with thrombocytopenia. METHODS: Data of acute ischemic stroke patients with baseline National Institutes of Health Stroke Scale (NIHSS) score ≤3 and a platelet count <100×109/L were obtained from a multicenter register. Those who required anticoagulation or had other contraindications to antiplatelet therapy were excluded. Short-term safety outcomes were in-hospital bleeding events, while the long-term safety outcome was a 1-year all-cause death. The short-term neurological outcomes were evaluated by modified Rankin scale (mRS) score at discharge. RESULTS: A total of 1868 non-cardioembolic mild stroke patients with thrombocytopenia were enrolled. Multivariate regression analyses showed that mono-antiplatelet therapy significantly increased the proportion of mRS score of 0-1 at discharge (OR=1.657, 95%CI: 1.253-2.192, P<0.01) and did not increase the risk of intracranial hemorrhage (OR=2.359, 95%CI: 0.301-18.503, P>0.05), compared with those without antiplatelet therapy. However, dual-antiplatelet therapy did not bring more neurological benefits (OR=0.923, 95%CI: 0.690-1.234, P>0.05), but increased the risk of gastrointestinal bleeding (OR=2.837, 95%CI: 1.311-6.136, P<0.01) compared with those with mono-antiplatelet therapy. For patients with platelet counts ≤75×109/L and >90×109/L, antiplatelet therapy significantly improved neurological functional outcomes (both P<0.05). For those with platelet counts (>75-90)×109/L, antiplatelet therapy resulted in a significant improvement of 1-year survival (P<0.05). For patients even with concurrent coagulation abnormalities, mono-antiplatelet therapy did not increase the risk of various types of bleeding (all P>0.05) but improved neurological functional outcomes (all P<0.01). There was no significant difference in the occurrence of bleeding events, 1-year all-cause mortality risk, and neurological functional outcomes between aspirin and clopidogrel (all P>0.05). CONCLUSIONS: For non-cardioembolic mild stroke patients with thrombocytopenia, antiplatelet therapy remains a reasonable choice. Mono-antiplatelet therapy has the same efficiency as dual-antiplatelet therapy in neurological outcome improvement with lower risk of gastrointestinal bleeding.


Sujet(s)
Antiagrégants plaquettaires , Accident vasculaire cérébral , Thrombopénie , Humains , Antiagrégants plaquettaires/effets indésirables , Antiagrégants plaquettaires/usage thérapeutique , Thrombopénie/traitement médicamenteux , Thrombopénie/complications , Femelle , Mâle , Accident vasculaire cérébral/complications , Sujet âgé , Numération des plaquettes , Adulte d'âge moyen , Accident vasculaire cérébral ischémique/traitement médicamenteux , Accident vasculaire cérébral ischémique/complications , Hémorragies intracrâniennes/induit chimiquement
7.
Medicine (Baltimore) ; 103(12): e36975, 2024 Mar 22.
Article de Anglais | MEDLINE | ID: mdl-38517998

RÉSUMÉ

RATIONALE: Neuroblastoma amplified sequence (NBAS)-associated disease is an autosomal recessive disorder and a broad spectrum of clinical symptoms has been reported. However, autoimmune mediated hemolytic anemia (AIHA) is rarely reported in NBAS disease. PATIENT CONCERNS: A now 21-year-old male harbors heterozygous variants of c.6840G>A and c.335 + 1G>A and was found had retarded growth, hypogammaglobulinemia, B lymphopenia, optic atrophy, horizontal nystagmus, slight splenomegaly and hepatomegaly since childhood. This case had normal hemoglobin level and platelet count in his childhood. He developed AIHA first in his adulthood and then thrombocytopenia during the treatment of AIHA. The mechanism underlying a case with pronounced hypogammaglobulinemia and B lymphopenia is elusive. In addition to biallelic NBAS mutations, a germline mutation in the ANKRD26 (c.2356C>T) gene was also detected. So either autoimmune or ANKRD26 mutation-mediated thrombocytopenia is possible in this case. INTERVENTION AND OUTCOME: He was initially managed with steroid and intermittent intravenous immunoglobulin supplement. After treatment, he responded well with a normalization of hemoglobin and serum bilirubin. But the patient subsequently experienced severe thrombocytopenia in addition to AIHA. He was then given daily avatrombopag in addition to steroid escalation. He responded again to new treatment, with the hemoglobin levels and platelet counts went back to the normal ranges. Now he was on de-escalated weekly avatrombopag and low-dose steroids maintenance. CONCLUSION: The phenotype of this case indicates that c.335 + 1G>A NBAS variant is probably a pathogenic one and c.2356C>T ANKRD26 variant is improbably a pathogenic one. AIHA may respond well to steroid even when happened in patients with NBAS disease.


Sujet(s)
Agammaglobulinémie , Anémie hémolytique auto-immune , Lymphopénie , Neuroblastome , Thiazoles , Thiophènes , Thrombopénie , Mâle , Humains , Adulte , Enfant , Jeune adulte , Anémie hémolytique auto-immune/diagnostic , Anémie hémolytique auto-immune/traitement médicamenteux , Anémie hémolytique auto-immune/génétique , Agammaglobulinémie/complications , Thrombopénie/complications , Mutation , Lymphopénie/complications , Hémoglobines , Stéroïdes , Neuroblastome/complications , Chine
9.
Pediatr Crit Care Med ; 25(4): e186-e192, 2024 Apr 01.
Article de Anglais | MEDLINE | ID: mdl-38305702

RÉSUMÉ

OBJECTIVES: To describe mortality associated with different clinical phenotypes of sepsis in children. DESIGN: Retrospective study. SETTING: PICU of a tertiary care center in India from 2017 to 2022. PATIENTS: Six hundred twelve children (from 2 mo to 17 yr old) with a retrospectively applied diagnosis of sepsis using 2020 guidance. METHODS: The main outcome was mortality associated with sepsis subtypes. Other analyses included assessment of risk factors, requirement for organ support, and PICU resources used by sepsis phenotype. Clinical data were recorded on a predesigned proforma. INTERVENTIONS: None. MEASUREMENTS AND RESULTS: Of the 612 children identified, there were 382 (62%) with sepsis but no multiple organ failure (NoMOF), 48 (8%) with thrombocytopenia-associated MOF (TAMOF), 140 (23%) with MOF without thrombocytopenia, and 40 (6.5%) with sequential MOF (SMOF). Mortality was higher in the SMOF (20/40 [50%]), MOF (62/140 [44%]) and TAMOF (20/48 [42%]) groups, compared with NoMOF group (82/382 [21%] [ p < 0.001]). The requirement for organ support and PICU resources was higher in all phenotypes with MOF as compared with those without MOF. On multivariable analysis elevated lactate and having MOF were associated with greater odds of mortality. CONCLUSIONS: In this single-center experience of sepsis in India, we found that sepsis phenotypes having MOF were associated with mortality and the requirement of PICU resources. Prospective studies in different regions of the world will help identify a classification of pediatric sepsis that is more widely applicable.


Sujet(s)
Sepsie , Thrombopénie , Enfant , Humains , Nourrisson , Études rétrospectives , Études prospectives , Sepsie/diagnostic , Phénotype , Thrombopénie/épidémiologie , Thrombopénie/complications , Unités de soins intensifs pédiatriques , Inde/épidémiologie
10.
BMC Infect Dis ; 24(1): 228, 2024 Feb 20.
Article de Anglais | MEDLINE | ID: mdl-38378534

RÉSUMÉ

BACKGROUND: Hematopoietic stem cell transplantation (HSCT) was associated with potentially life-threatening complications. Among patients supported by extracorporeal membrane oxygenation (ECMO), those who underwent HSCT had a worse prognosis than those who did not. Advances in HSCT and critical care management have improved the prognosis of ECMO-supported HSCT patients. CASE: The patient in the remission stage of lymphoma after 22 months of allogeneic hematopoietic stem cell transplantation, suffered from ARDS, severe neutropenia, thrombocytopenia, and long-term COVID-19. We evaluated the benefits and risks of ECMO for the patient, including the possibility of being free from ECMO, the status of malignancy, the interval from HSCT to ARDS, the function of the graft, the amount of organ failure, and the comorbidities. ECMO was ultimately used to save his life. CONCLUSIONS: We did not advocate for the general use of ECMO in HSCT patients and we believed that highly selected patients, with well-controlled tumors, few comorbidities, and fewer risk factors for death, tended to benefit from ECMO with well ICU management.


Sujet(s)
COVID-19 , Oxygénation extracorporelle sur oxygénateur à membrane , Transplantation de cellules souches hématopoïétiques , Tumeurs , Neutropénie , , Thrombopénie , Humains , Oxygénation extracorporelle sur oxygénateur à membrane/effets indésirables , COVID-19/thérapie , COVID-19/complications , /étiologie , Thrombopénie/thérapie , Thrombopénie/complications , Neutropénie/complications , Neutropénie/thérapie , Tumeurs/complications , Transplantation de cellules souches hématopoïétiques/effets indésirables
11.
Orphanet J Rare Dis ; 19(1): 71, 2024 Feb 16.
Article de Anglais | MEDLINE | ID: mdl-38365689

RÉSUMÉ

BACKGROUND: Gaucher disease (GD) is a rare autosomal recessive condition associated with clinical features such as splenomegaly, hepatomegaly, anemia, thrombocytopenia, and bone abnormalities. Three clinical forms of GD have been defined based on the absence (type 1, GD1) or presence (types 2 and 3) of neurological signs. Early diagnosis can reduce the likelihood of severe, often irreversible complications. The aim of this study was to validate the ability of factors from the Gaucher Earlier Diagnosis Consensus (GED-C) scoring system to discriminate between patients with GD1 and controls using real-world data from electronic patient medical records from Maccabi Healthcare Services, Israel's second-largest state-mandated healthcare provider. METHODS: We applied the GED-C scoring system to 265 confirmed cases of GD and 3445 non-GD controls matched for year of birth, sex, and socioeconomic status identified from 1998 to 2022. The analyses were based on two databases: (1) all available data and (2) all data except free-text notes. Features from the GED-C scoring system applicable to GD1 were extracted for each individual. Patients and controls were compared for the proportion of the specific features and overall GED-C scores. Decision tree and random forest models were trained to identify the main features distinguishing GD from non-GD controls. RESULTS: The GED-C scoring distinguished individuals with GD from controls using both databases. Decision tree models for the databases showed good accuracy (0.96 [95% CI 0.95-0.97] for Database 1; 0.95 [95% CI 0.94-0.96] for Database 2), high specificity (0.99 [95% CI 0.99-1]) for Database 1; 1.0 [95% CI 0.99-1] for Database 2), but relatively low sensitivity (0.53 [95% CI 0.46-0.59] for Database 1; 0.32 [95% CI 0.25-0.38]) for Database 2). The clinical features of splenomegaly, thrombocytopenia (< 50 × 109/L), and hyperferritinemia (300-1000 ng/mL) were found to be the three most accurate classifiers of GD in both databases. CONCLUSION: In this analysis of real-world patient data, certain individual features of the GED-C score discriminate more successfully between patients with GD and controls than the overall score. An enhanced diagnostic model may lead to earlier, reliable diagnoses of Gaucher disease, aiming to minimize the severe complications associated with this disease.


Sujet(s)
Maladie de Gaucher , Thrombopénie , Humains , Maladie de Gaucher/diagnostic , Maladie de Gaucher/complications , Consensus , Splénomégalie/complications , Diagnostic précoce , Thrombopénie/complications
12.
Transpl Int ; 37: 12192, 2024.
Article de Anglais | MEDLINE | ID: mdl-38328616

RÉSUMÉ

Pneumocystis pneumonia (PcP) remains life-threatening in kidney transplant recipients (KTR). Our study investigated risk factors one-year before PcP. We conducted a monocentric, case-control study including all KTR at the Dijon University Hospital (France) with a diagnosis of PcP between 2005 and 2022 (cases), and matched control KTR with no history of PcP (3 controls/case). Among all 1,135 KTR, 57 cases (5%) and 169 matched-controls were included. PcP was associated with 18% mortality. Compared to controls, cases were older, with a higher immunological risk, and CMV infection was more frequent in the year preceding the occurrence of PcP (23% vs. 4%; p < 0.001). As early as 1 year before PcP, lymphocyte counts were lower and serum creatinine levels were higher in cases, but immunosuppressive regimens were not significantly different. Multivariable analysis identified lymphocyte count, serum creatinine level, being treated by immunosuppressive therapy other than anti-rejection drugs, and CMV infection in the year preceding the time PcP as independently associated with the occurrence of PcP. PcP was associated with an increased risk of subsequent chronic rejection (27% vs. 3%; p = 0.001) and return to dialysis (20% vs. 3%; p = 0.002). The occurrence of CMV infection and a low lymphocyte count could redefine the indications for continuation or reinitiation of anti-Pneumocystis prophylaxis.


Sujet(s)
Infections à cytomégalovirus , Transplantation rénale , Lymphopénie , Pneumocystis carinii , Pneumonie à Pneumocystis , Thrombopénie , Humains , Pneumonie à Pneumocystis/diagnostic , Pneumonie à Pneumocystis/complications , Pneumonie à Pneumocystis/traitement médicamenteux , Études cas-témoins , Transplantation rénale/effets indésirables , Créatinine , Infections à cytomégalovirus/complications , Infections à cytomégalovirus/diagnostic , Infections à cytomégalovirus/épidémiologie , Facteurs de risque , Lymphopénie/complications , Thrombopénie/complications , Receveurs de transplantation , Études rétrospectives
13.
Thromb Res ; 235: 92-97, 2024 Mar.
Article de Anglais | MEDLINE | ID: mdl-38308884

RÉSUMÉ

INTRODUCTION: Atrial fibrillation or flutter (AF) is prevalent in cancer patients. Many of these patients have an indication for anticoagulation (AC) but are also at risk for developing chemotherapy-induced thrombocytopenia. There are scarce data regarding management of AC and risk of bleeding and thrombosis in cancer patients with AF and thrombocytopenia. AIM: To assess anticoagulation management and incidence of bleeding and arterial thromboembolism (ATE) in cancer patients with AF and grade 3-4 thrombocytopenia (platelets <50 × 109/L). METHODS: A retrospective cohort study included adults with active cancer, grade 3-4 thrombocytopenia and AF with CHA2DS2-VASc score ≥ 1. Patients were stratified according to AC discontinuation (No-AC) or continuation (Continue-AC) when platelets dropped below 50 × 109/L and followed for 30 days. The study outcomes were ATE (ischemic stroke, transient ischemic attack or systemic emboli) and major bleeding. Cox proportional hazards model was used to calculate hazard ratios (HR) with death as a competing risk (Fine and Gray model). RESULTS: The cohort included 131 patients; 90 in the No-AC group and 41 in the Continue-AC group. Patient characteristics were balanced between the groups. The 30-day cumulative incidence of ATE was 2 % [95 % CI 0.4 %-7 %] in the No-AC group and 2 % [0.2 %-11 %] in the Continue-AC group (HR 0.92 [95 % CI 0.09-9.88]). The 30-day cumulative incidence of major bleeding was 7.8 % [95 % CI 3.40 %-14.52 %] and 2.44 % [95 % CI 0.18 %-11.22 %] in the No-AC and Continue-AC groups, respectively (HR 3.29 [95 % CI 0.42-26.04]). CONCLUSIONS: The high rate of bleeding and low rate of ATE in thrombocytopenic cancer patients with AF suggests that holding AC during time-limited periods may be a reasonable approach.


Sujet(s)
Fibrillation auriculaire , Tumeurs , Thrombopénie , Adulte , Humains , Fibrillation auriculaire/complications , Fibrillation auriculaire/traitement médicamenteux , Études rétrospectives , Thrombopénie/complications , Tumeurs/complications , Tumeurs/traitement médicamenteux , Hémorragie/induit chimiquement , Anticoagulants/effets indésirables
14.
Am J Hematol ; 99(5): 844-853, 2024 May.
Article de Anglais | MEDLINE | ID: mdl-38357714

RÉSUMÉ

Splenomegaly is the clinical hallmark of myelofibrosis. Splenomegaly at the time of allogeneic hematopoietic cell transplantation (HCT) is associated with graft failure and poor graft function. Strategies to reduce spleen size before HCT especially after failure to Janus kinase (JAK) inhibition represent unmet clinical needs in the field. Here, we leveraged a global collaboration to investigate the safety and efficacy of splenic irradiation as part of the HCT platform for patients with myelofibrosis. We included 59 patients, receiving irradiation within a median of 2 weeks (range, 0.9-12 weeks) before HCT. Overall, the median spleen size prior to irradiation was 23 cm (range, 14-35). Splenic irradiation resulted in a significant and rapid spleen size reduction in 97% of patients (57/59), with a median decrease of 5.0 cm (95% confidence interval, 4.1-6.3 cm). The most frequent adverse event was thrombocytopenia, with no correlation between irradiation dose and hematological toxicities. The 3-year overall survival was 62% (95% CI, 48%-76%) and 1-year non-relapse mortality was 26% (95% CI, 14%-38%). Independent predictors for survival were severe thrombocytopenia and anemia before irradiation, transplant-specific risk score, higher-intensity conditioning, and present portal vein thrombosis. When using a propensity score matching adjusted for common confounders, splenic irradiation was associated with significantly reduced relapse (p = .01), showing a 3-year incidence of 12% for splenic irradiation versus 29% for patients with immediate HCT and 38% for patients receiving splenectomy. In conclusion, splenic irradiation immediately before HCT is a reasonable approach in patients experiencing JAK inhibition failure and is associated with a low incidence of relapse.


Sujet(s)
Maladie du greffon contre l'hôte , Transplantation de cellules souches hématopoïétiques , Myélofibrose primitive , Thrombopénie , Humains , Rate , Splénomégalie/étiologie , Splénomégalie/radiothérapie , Myélofibrose primitive/radiothérapie , Myélofibrose primitive/complications , Transplantation de cellules souches hématopoïétiques/méthodes , Thrombopénie/complications , Récidive , Conditionnement pour greffe/méthodes , Maladie du greffon contre l'hôte/étiologie
15.
BMC Infect Dis ; 24(1): 240, 2024 Feb 22.
Article de Anglais | MEDLINE | ID: mdl-38389047

RÉSUMÉ

OBJECTIVE: This study aimed to investigate the clinical characteristics of severe fever with thrombocytopenia syndrome complicated by viral myocarditis (SFTS-VM) and analyze relevant influencing factors. METHODS: Retrospective analysis was conducted on clinical data from 79 SFTS-VM patients, categorized into common (SFTS-CVM, n = 40) and severe groups (SFTS-SVM, n = 39). Clinical manifestations, laboratory results, cardiac ultrasonography, and electrocardiogram features were analyzed. Univariate and multivariate analyses identified significant indicators, which were further assessed using ROC curves to predict SFTS-SVM. RESULTS: SFTS-SVM group exhibited higher rates of hypotension, shock, abdominal pain, cough with sputum, and consciousness disorders compared to SFTS-CVM group. Laboratory findings showed elevated platelet count, ALT, AST, amylase, lipase, LDH, D-dimer, procalcitonin, TNI, and NT-proBNP in SFTS-SVM. Abnormal electrocardiograms, especially atrial fibrillation, were more prevalent in SFTS-SVM (P < 0.05). Multivariate analysis identified elevated LDH upon admission (OR = 1.004, 95% CI: 1-1.008, P = 0.050), elevated NT-proBNP (OR = 1.005, 95% CI: 1.001-1.008, P = 0.007), and consciousness disorders (OR = 112.852, 95% CI: 3.676 ~ 3464.292, P = 0.007) as independent risk factors for SFTS-SVM. LDH and NT-proBNP had AUCs of 0.728 and 0.744, respectively, in predicting SFTS-SVM. Critical values of LDH (> 978.5U/L) and NT-proBNP (> 857.5pg/ml)) indicated increased likelihood of SFTS progression into SVM. CONCLUSION: Elevated LDH, NT-proBNP, and consciousness disorders independently correlate with SFTS-SVM. LDH and NT-proBNP can aid in early identification of SFTS-SVM development when above specified thresholds.


Sujet(s)
Myocardite , Phlebovirus , Syndrome de fièvre sévère avec thrombocytopénie , Thrombopénie , Maladies virales , Humains , Études rétrospectives , Thrombopénie/complications , Thrombopénie/diagnostic , Myocardite/complications , Myocardite/diagnostic , Troubles de la conscience/complications , Fièvre/complications
16.
Medicine (Baltimore) ; 103(8): e37250, 2024 Feb 23.
Article de Anglais | MEDLINE | ID: mdl-38394546

RÉSUMÉ

RATIONALE: Hodgkin lymphoma, a lymphatic system cancer, is treated by chemotherapy, radiation therapy, and hematopoietic stem cell transplantation. Posterior reversible encephalopathy syndrome (PRES) is a rare neurotoxic effect associated with several drugs and systemic conditions. This case study emphasizes the potential risks of intensive chemotherapy regimens and postulates the impact of the circle of Willis variants on the heterogeneity of hemispheric lesions in PRES. PATIENT CONCERNS: A 42-year-old woman diagnosed with stage IIA nodular sclerosing Hodgkin lymphoma and chronic thrombocytopenia presented after 6 years of initial diagnosis and 4 years post-haploidentical transplant. She underwent planned chemotherapy with ifosfamide, carboplatin, and etoposide. DIAGNOSES: She developed an alteration in her mental status. A computerized tomography scan and angiogram of the head and neck revealed findings consistent with PRES and a left fetal-type posterior cerebral artery with an aplastic A1 segment of the left anterior cerebral artery. One hour later she was found comatose with clinical sequelae of an uncal herniation. INTERVENTIONS: Subsequent events led to emergent intubation, and administration of 23.4% hypertonic saline. A repeat computerized tomography scan showed a right intraparenchymal hemorrhage with fluid-fluid levels measuring up to 4.7 cm, bilateral subarachnoid hemorrhage, right uncal herniation, and 15 mm of leftward midline shift. She emergently underwent a right decompressive hemi-craniectomy. OUTCOMES: An magnetic resonance imaging of the brain demonstrated bilateral cytotoxic edema involving the parieto-occipital lobes. Despite interventions, the patient's neurological condition deteriorated, leading to a declaration of brain death on the 8th day. LESSONS: This case underscores the importance of recognizing the severe neurological complications, including PRES, associated with chemotherapeutic treatments in Hodgkin lymphoma. PRES may also be exacerbated by coagulopathies such as thrombocytopenia in this case. The circle of Willis variants may influence cerebral blood flow, autoregulation, and other factors of hemodynamics, leading to increased susceptibility to both radiographic lesion burden and the worst clinical outcomes.


Sujet(s)
Encéphalopathies , Maladie de Hodgkin , Leucoencéphalopathie postérieure , Thrombopénie , Humains , Femelle , Adulte , Leucoencéphalopathie postérieure/induit chimiquement , Leucoencéphalopathie postérieure/imagerie diagnostique , Maladie de Hodgkin/complications , Cercle artériel du cerveau , Encéphalopathies/complications , Hémorragie/complications , Thrombopénie/complications , Circulation cérébrovasculaire , Homéostasie
17.
Blood Coagul Fibrinolysis ; 35(3): 141-146, 2024 Apr 01.
Article de Anglais | MEDLINE | ID: mdl-38358904

RÉSUMÉ

This case report discusses the medical history of a 64-year-old woman diagnosed with scleroderma and diffuse gastrointestinal angiodysplasia. The patient received bevacizumab (BVZ) therapy to address gastrointestinal bleeding that was unresponsive to endoscopic treatment. Subsequently, she developed severe thrombocytopenia. Although there were suspicions of an immune-mediated mechanism resulting from BVZ treatment, the laboratory results did not provide conclusive evidence. The patient underwent transfusions, received gamma globulin, and was treated with Romiplostim. Over time, her platelet levels gradually improved, and the bleeding was successfully controlled. It's worth noting that BVZ-induced thrombocytopenia is a relatively rare yet severe adverse effect. Recognizing and understanding the mechanisms behind thrombocytopenia is essential for developing safer treatment approaches. Further research is required to identify potential risk factors associated with this condition.


Sujet(s)
Anémie , Angiodysplasie , Thrombopénie , Humains , Femelle , Adulte d'âge moyen , Bévacizumab/effets indésirables , Hémorragie gastro-intestinale/étiologie , Hémorragie gastro-intestinale/thérapie , Transfusion sanguine , Thrombopénie/complications , Thrombopénie/traitement médicamenteux , Angiodysplasie/complications , Angiodysplasie/traitement médicamenteux
18.
Gastroenterol. hepatol. (Ed. impr.) ; 47(1): 32-50, ene. 2024. tab, graf
Article de Anglais | IBECS | ID: ibc-229084

RÉSUMÉ

Objective The lack of consensus and specific guidelines, and the introduction of new treatments in thrombocytopenia management in liver cirrhosis patients, required a series of recommendations by experts to improve knowledge on this disease. This study's aim was to improve the knowledge around thrombocytopenia in liver cirrhosis patients, in order to contribute to the generation of future evidence to improve the management of this disease. Patients and methods A modified version of the RAND/UCLA appropriateness method was used. The scientific committee, a multidisciplinary team of 7 experts in managing thrombocytopenia in liver cirrhosis patients, identified the expert panel, and participated in elaborating the questionnaire. Thirty experts from different Spanish institutions were invited to answer a 48-item questionnaire covering 6 areas on a nine-point Likert scale. Two rounds were voted. The consensus was obtained if >77.7% of panelists reached agreement or disagreement. Results A total of 48 statements were developed by the scientific committee and then voted by the experts, resulting in 28 defined as appropriate and completely necessary, relating to evidence generation (10), care circuit, (8), hemorrhagic risk assessment, decision-making and diagnostic tests (14), professionals’ role and multidisciplinary coordination (9) and patient education (7). Conclusions This is the first consensus in Spain on the management of thrombocytopenia in liver cirrhosis patients. Experts indicated several recommendations to be carried out in different areas that could help physicians make better decisions in their clinical practice (AU)


Objetivo La falta de consenso y guías específicas, y la introducción de nuevos tratamientos para el manejo de la trombocitopenia en pacientes con cirrosis hepática, requerían recomendaciones expertas para mejorar el conocimiento sobre dicha patología. El objetivo de este estudio es mejorar el conocimiento sobre la trombocitopenia en pacientes con cirrosis hepática de cara a contribuir en la generación de futuras evidencias que mejoren el manejo de esta patología. Metodología Ae utilizó una versión modificada de la metodología Delphi RAND/UCLA. El comité científico, formado por 7 expertos en el manejo de la trombocitopenia en pacientes con cirrosis hepática, identificó un panel de expertos y participó en la elaboración del cuestionario de recomendaciones. Treinta expertos de diferentes hospitales españoles fueron invitados a responder al cuestionario. Los expertos respondieron a 48 ítems divididos en 6 áreas en una escala Likert de 9 puntos. La votación tuvo lugar en 2 rondas, en las que se obtuvo consenso siempre y cuando >77,7% de los panelistas alcanzasen acuerdo o desacuerdo. Resultados Cuarenta y ocho recomendaciones fueron elaboradas por el comité científico para su votación por parte del panel de expertos. Finalmente 28 recomendaciones fueron consideradas apropiadas y completamente necesarias: 10 de ellas relativas a la generación de evidencia; 8 al circuito de cuidados; 14 a la evaluación de riesgo hemorrágico, la toma de decisiones y los test diagnósticos; 9 al papel de los profesionales y la coordinación multidisciplinar, y 7 a la educación de los pacientes. Conclusiones Se trata del primer consenso español en el manejo de la trombocitopenia en pacientes con cirrosis hepática. Los expertos definieron un amplio número de recomendaciones que podrían contribuir a la toma de decisiones clínicas y a la mejora en el manejo de estos pacientes en la práctica clínica real (AU)


Sujet(s)
Humains , Thrombopénie/complications , Thrombopénie/thérapie , Cirrhose du foie/complications , Enquêtes et questionnaires , Consensus , Espagne
19.
Am J Case Rep ; 25: e942339, 2024 Jan 28.
Article de Anglais | MEDLINE | ID: mdl-38281079

RÉSUMÉ

BACKGROUND Catastrophic antiphospholipid syndrome (CAPS) is a rare, life-threatening form of antiphospholipid syndrome characterized by widespread thrombotic complications leading to multiorgan ischemia and failure. Although there are no standard treatment guidelines for CAPS, it often involves triple therapy with anticoagulation, corticosteroids, and plasma exchange. Recently, biologics such as rituximab and eculizumab have also shown promise as potential new therapies for CAPS, as observed in our case. CASE REPORT We describe a 59-year-old female patient who presented with altered mental status and diffuse weakness. Imaging studies revealed multiorgan thrombosis along with thrombocytopenia that markedly improved with plasma exchange therapy, steroids, and a heparin drip. While the exact etiology of CAPS remained unknown, it was likely precipitated by her warfarin discontinuation and confirmed Haemophilus influenzae infection. The patient's hospital course was complicated by hemorrhagic shock after a renal biopsy, followed by an acute drop in thrombocytopenia and new embolic infarcts in the brain that raised concern for CAPS re-emergence. To address the refractory nature of her condition, the patient underwent a trial of rituximab, which remarkably improved her clinical picture and platelet count by an 8-fold increase within 1 week. CONCLUSIONS This case highlights the importance of early recognition and diagnosis of catastrophic antiphospholipid syndrome, a true rheumatological emergency that requires aggressive treatment to prevent irreversible complications. Our patient's presentation and response to treatment also underscores the complexity of managing CAPS and the use of newer biological therapies in refractory cases.


Sujet(s)
Syndrome des anticorps antiphospholipides , Thrombopénie , Thrombose , Femelle , Humains , Adulte d'âge moyen , Syndrome des anticorps antiphospholipides/complications , Syndrome des anticorps antiphospholipides/diagnostic , Rituximab/usage thérapeutique , Thrombose/étiologie , Héparine/usage thérapeutique , Thrombopénie/complications
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