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2.
Rev. cuba. hematol. inmunol. hemoter ; 37(2): e1235, 2021. graf
Article Es | LILACS, CUMED | ID: biblio-1289431

Introducción: La púrpura trombocitopénica trombótica puede presentarse en menos del 2 por ciento de los pacientes con lupus eritematoso sistémico. Esta asociación implica un aumento de la mortalidad y un periodo de remisión más prolongado. Objetivo: Se presenta el caso de paciente peruana que desarrolló esta asociación y presentó complicaciones relacionadas con shock séptico. Caso clínico: Paciente femenina, con antecedente de púrpura trombocitopénica inmunológica y lupus eritematoso sistémico, acudió a emergencia por presentar palidez cutánea generalizada, petequias en miembros inferiores y hematuria. Posteriormente, su estado de salud se complicó con un shock séptico y deterioro del nivel de conciencia. Por todo esto, es referida a un hospital de mayor complejidad y hace su ingreso a la unidad de cuidados intensivos. La clínica y los exámenes de laboratorio revelaron hallazgos compatibles con púrpura trombocitopénica trombótica (anemia grave, plaquetopenia, esquistositosis) y lupus eritematoso sistémico activo grave. Antes de ser referida, recibió pulsos de metilprednisona y prednisona. Ya en unidad de cuidados intensivos, se cambió a soporte ventilatorio y tratamiento antibiótico. Con el diagnóstico presuntivo de púrpura trombocitopénica trombótica, asociada a lupus eritematoso sistémico activo grave, se inició tratamiento oportuno con plasmaféresis, corticoterapia y ciclofosfamida. La paciente recuperó los niveles plaquetarios y el nivel óptimo de conciencia. Actualmente acude a controles. Conclusiones: La púrpura trombocitopénica trombótica es una emergencia hematológica con alta mortalidad en ausencia de tratamiento. Su reconocimiento oportuno, sin dosificación de la proteína ADAMTS13, en esta asociación poco frecuente con lupus eritematoso sistémico es importante en el buen pronóstico del paciente(AU)


Introduction: Thrombotic thrombocytopenic purpura may occur in less than 2 percent of patients with systemic lupus erythematosus. This association implies an increase in mortality and a longer remission period. Objective: We present the case of a Peruvian woman who developed this association, and complicating herself with septic shock. Clinical case: A female patient, with a history of immunological thrombocytopenic purpura and systemic lupus erythematosus, comes to the emergency room due to generalized skin pallor, lower limb petechiae and hematuria. Subsequently, her state of health gets complicated with a septic shock and deterioration of the level of consciousness. For all of this, she was referred to a hospital of greater complexity and makes admission to an intensive care unit. Clinical and laboratory tests revealed findings compatible with thrombotic thrombocytopenic purpura (severe anemia, platelet disease, schistositosis) and severe active systemic lupus erythematosus. Before being referred, she received pulses of methylprednisone and prednisone. When already in the intensive care unit, it was changed to ventilatory support andantibiotic treatment. With the presumptive diagnosis of thrombotic thrombocytopenic purpura, associated with severe active systemic lupus erythematosus, a timely treatment was initiated with plasmapheresis, corticosteroids and cyclophosphamide. The patient recovered platelet levels and optimal level of consciousness. She is currently going to controls. Conclusions: Thrombotic thrombocytopenic purpura is a hematological emergency with high mortality in the absence of treatment. Its timely recognition, without dosing of ADAMTS13 protein, in this rare association with systemic lupus erythematosus is important in the good prognosis of the patient(AU)


Humans , Female , Purpura, Thrombocytopenic/complications , Plasmapheresis/methods , Intensive Care Units , Lupus Erythematosus, Systemic/complications , Purpura, Thrombocytopenic/drug therapy
4.
BMJ Case Rep ; 12(6)2019 Jun 21.
Article En | MEDLINE | ID: mdl-31229978

A rare case of acquired amegakaryocytic thrombocytopenia (AATP) in a 35-year-old woman who presented with anaemia and thrombocytopenia at 22 weeks gestation. The first diagnostic impression was of an evolving aplastic anaemia; however, the patient was simultaneously diagnosed with severe vitamin B12 deficiency in the setting of vegetarianism. Once the cyanocobalamin deficiency was corrected, a repeat bone marrow biopsy revealed an isolated depletion of megakaryocytes, which suggested the diagnosis of AATP. Supportive care was provided for her anaemia and thrombocytopenia and she delivered a healthy baby girl with a normal platelet count. The patient was subsequently started on romiplostim with steady improvement in her platelet counts. This rare AATP case presentation highlights the importance of a well-structured diagnostic approach to thrombocytopenia during pregnancy and supports the successful use of thrombopoietin agonists for the management of AATP.


Bone Marrow Diseases/complications , Pregnancy Complications, Hematologic/physiopathology , Purpura, Thrombocytopenic/complications , Receptors, Fc/therapeutic use , Recombinant Fusion Proteins/therapeutic use , Thrombocytopenia/etiology , Thrombopoietin/therapeutic use , Adult , Bone Marrow Diseases/physiopathology , Bone Marrow Diseases/therapy , Cesarean Section , Female , Humans , Platelet Count , Pregnancy , Pregnancy Complications, Hematologic/therapy , Purpura, Thrombocytopenic/physiopathology , Purpura, Thrombocytopenic/therapy , Thrombocytopenia/physiopathology , Thrombocytopenia/therapy , Treatment Outcome
5.
J Pediatr Hematol Oncol ; 41(8): e542-e545, 2019 11.
Article En | MEDLINE | ID: mdl-30188351

Acquired pure red cell aplasia and acquired amegakaryocytic thrombocytopenic purpura are rare in children. Similarly, clonal expansion of T-cell large granular lymphocytes is infrequently seen in pediatrics. Lipopolysaccharide-responsive beige-like anchor (LRBA) protein deficiency is a recently described immunodeficiency syndrome that has been associated with inflammatory bowel disease and autoimmune phenomena such as Evans syndrome. Here, we describe a patient with LRBA deficiency who developed acquired pure red cell aplasia and acquired amegakaryocytic thrombocytopenic purpura associated with expansion of clonal T-cell large granular lymphocytes. This has not been described in the literature previously and adds to the knowledge on the spectrum of manifestations of LRBA deficiency.


Adaptor Proteins, Signal Transducing/deficiency , Red-Cell Aplasia, Pure , T-Lymphocytes , Adolescent , Bone Marrow Diseases/complications , Bone Marrow Diseases/genetics , Bone Marrow Diseases/metabolism , Bone Marrow Diseases/pathology , Humans , Male , Purpura, Thrombocytopenic/complications , Purpura, Thrombocytopenic/genetics , Purpura, Thrombocytopenic/metabolism , Purpura, Thrombocytopenic/pathology , Red-Cell Aplasia, Pure/complications , Red-Cell Aplasia, Pure/genetics , Red-Cell Aplasia, Pure/metabolism , Red-Cell Aplasia, Pure/pathology , T-Lymphocytes/metabolism , T-Lymphocytes/pathology
7.
Medicine (Baltimore) ; 96(2): e5792, 2017 Jan.
Article En | MEDLINE | ID: mdl-28079804

RATIONALE: Neuromyelitis optica spectrum disorders (NMOSD) is considered as an immune-mediated disorder in the central nervous system (CNS). Numerous autoimmune diseases are frequently complicated with NMOSD and distinct clinical characteristics are noted in NMOSD patients with other autoimmune diseases. However, to our best knowledge, co-occurrence of NMOSD and thrombopenic purpura is rarely identified. PATIENT CONCERNS: We presented a rare case of a 72-year-old female with 6-year history of thrombopenic purpura, and 1-month history of blurred vision as well as chest zonethesia. Anti-aquaporin-4 (AQP4) antibodies was positive in the serum of the patient. DIAGNOSES: With the addition of laboratory findings, iconography findings and physical examination results, the diagnosis of NMOSD was established according to the most recent diagnostic criteria. INTERVENTIONS AND OUTCOMES: With the treatment of intravenous immunoglobulin (IVIg), the patient felt better at discharge without changing of expanded disability status scale (EDSS) score. LESSONS: The case indicates that NMOSD could co-occur with thrombopenic purpura. The disturbance of immune system balance may explain this overlap. Further studies are warranted to reveal the mechanism and to explore whether patients with NMOSD with and without thrombopenic purpura have distinct clinical feature, drug responsiveness or prognosis.


Aquaporin 4/immunology , Neuromyelitis Optica/immunology , Purpura, Thrombocytopenic/complications , Aged , Female , Humans
8.
Turk Kardiyol Dern Ars ; 45(1): 77-81, 2017 Jan.
Article En | MEDLINE | ID: mdl-28106023

Kabuki syndrome is a rare congenital malformation syndrome characterized by mental retardation, skeletal deformities, auditory dysfunction, cardiac defects, and distinctive facial appearance. Although complex cardiovascular malformations present in early childhood, rarely, atrioventricular septal defects may also present in young adults. Presently described is case of a 22-year-old female with KS who presented with ostium secundum atrial septal defect with deficient rim and idiopathic thrombocytopenic purpura. In this case, minimally invasive robotic surgery was preferred for closure of atrial septal defect.


Abnormalities, Multiple , Face/abnormalities , Heart Septal Defects, Atrial/diagnosis , Heart Septal Defects, Atrial/surgery , Hematologic Diseases , Purpura, Thrombocytopenic/diagnosis , Vestibular Diseases , Diagnosis, Differential , Echocardiography, Transesophageal , Endovascular Procedures , Female , Heart Septal Defects, Atrial/complications , Heart Septal Defects, Atrial/diagnostic imaging , Humans , Purpura, Thrombocytopenic/complications , Robotic Surgical Procedures , Treatment Outcome , Young Adult
9.
Dig Dis Sci ; 62(3): 746-754, 2017 03.
Article En | MEDLINE | ID: mdl-28035550

BACKGROUND: Procedure-induced bleeding is a major complication after endoscopic intervention. AIMS: The aim of this study was to investigate the risk of endoscopy-related bleeding in patients with chronic hematologic thrombocytopenia. METHODS: We investigated endoscopy-related bleeding in 175 procedures performed on 108 patients with immune thrombocytopenic purpura or aplastic anemia. The outcomes were compared with those of 350 procedures on age-, sex-, and procedure-matched control subjects. Endoscopic interventions included low-risk procedures such as endoscopic biopsy and high-risk procedures including polypectomy, endoscopic resection, and endoscopic retrograde cholangiopancreatogram with sphincterotomy. RESULTS: Bleeding occurred in 17 (9.7%) procedures among the patients with thrombocytopenia. This rate was significantly higher than that in procedures on controls (3.1%, P = 0.003). About 60% of all bleeding events were observed within 24 h after the endoscopic procedure. Bleeding after endoscopic biopsy developed more frequently in the patient group than in the control group (7.1 vs. 0.7%; P < 0.001). Bleeding occurred after 20% of all high-risk procedures. The incidence of bleeding was significantly elevated in patients with a platelet count less than 50 × 103/µl. Multivariate analysis revealed that high-risk procedures and low platelet count (less than 50 × 103/µl) were significantly related to procedure-related bleeding. All bleeding events stopped spontaneously or were controlled with endoscopic hemostasis. CONCLUSIONS: Endoscopic procedure-related bleeding develops frequently in patients with chronic hematologic thrombocytopenia. Post-procedural bleeding should be observed carefully in these patients, especially when the platelet count is less than 50 × 103/µl or high-risk endoscopic procedures are planned.


Anemia, Aplastic/complications , Endoscopy, Gastrointestinal , Gastrointestinal Hemorrhage , Postoperative Hemorrhage , Purpura, Thrombocytopenic/complications , Thrombocytopenia , Endoscopy, Gastrointestinal/adverse effects , Endoscopy, Gastrointestinal/methods , Endoscopy, Gastrointestinal/statistics & numerical data , Female , Gastrointestinal Diseases/complications , Gastrointestinal Diseases/diagnosis , Gastrointestinal Diseases/surgery , Gastrointestinal Hemorrhage/diagnosis , Gastrointestinal Hemorrhage/epidemiology , Gastrointestinal Hemorrhage/etiology , Gastrointestinal Hemorrhage/therapy , Hemostasis, Endoscopic/methods , Humans , Male , Postoperative Hemorrhage/diagnosis , Postoperative Hemorrhage/epidemiology , Postoperative Hemorrhage/etiology , Postoperative Hemorrhage/therapy , Remission, Spontaneous , Republic of Korea/epidemiology , Risk Assessment/methods , Risk Factors , Thrombocytopenia/blood , Thrombocytopenia/etiology
10.
Prague Med Rep ; 118(4): 147-155, 2017.
Article En | MEDLINE | ID: mdl-29324222

Acquired amegakaryocytic thrombocytopenic purpura (AATP) is a rare hematological disorder characterized by severe thrombocytopenia and a complete or near-to complete absence of megakaryocytes in the bone marrow, while granulopoiesis, as well as erythropoiesis are usually preserved. Although autoimmune mechanisms are believed to be causative, the exact underlying pathogenesis is not known. To date, only few cases have been reported and management of this disease remains controversial with immunosuppression being the treatment modality of choice in the majority of patients. In this article, we report a case of newly acquired AATP without an associated autoimmune disease, refractory to corticoids, intravenous immunoglobulin (IVIG) and second-generation TPO (thrombopoietin) agonists, which have recently been approved for the treatment of thrombocytopenia. Finally, in accordance with other reports, disease progression into aplastic anemia has occurred.


Anemia, Aplastic/diagnosis , Anemia, Aplastic/etiology , Purpura, Thrombocytopenic/complications , Purpura, Thrombocytopenic/diagnosis , Anemia, Aplastic/drug therapy , Anti-Bacterial Agents/therapeutic use , Humans , Immunosuppressive Agents/therapeutic use , Male , Middle Aged , Purpura, Thrombocytopenic/drug therapy , Treatment Outcome
11.
Matronas prof ; 18(1): e10-e12, 2017.
Article Es | IBECS | ID: ibc-161713

La trombocitopenia puede presentarse en el 5-10% de las gestaciones, y el 75% de ellas se clasifican como trombocitopenias gestacionales, que suelen ser de carácter leve y no estar asociadas a complicaciones maternas o fetales. La discriminación del tipo de trombocitopenia es difícil. Se expone el caso de una gestante gemelar de 36 + 4 semanas, con ambos fetos en presentación cefálica, que ingresa por rotura prematura de membranas y con una trombocitopenia gestacional moderada, surgida en el tercer trimestre de gestación. El parto se inició de forma espontánea, se emplearon métodos para el alivio del dolor alternativos a la analgesia epidural y finalizó por vía vaginal sin complicaciones. Durante el ingreso hospitalario se transfundieron tres pools de concentrados de plaquetas, antes del nacimiento. El manejo del parto gemelar con trombocitopenia requiere un abordaje multidisciplinario ante el riesgo de hemorragia


Thrombocytopenia affects approximately 5-10% of pregnant women; within that disorder, a condition known as gestational thrombocytopenia accounts for 75% of cases and is not usually associated with maternal or foetal complications. Proper identification of the type of thrombocytopenia matters and this fact is sometimes a real challenge for clinicians. In this article we present a case of a woman with twin pregnancy at 36 + 4 gestational week that visited the hospital for suspicious rupture of membranes. She had developed a moderate gestational thrombocytopenia at the end of third trimester. Onset of labour occurred spontaneously and both deliveries ended uncomplicated. During process were needed the transfusion of several pools of platelets before births. Management of twin birth delivery with thrombocytopenia requires a specific multidisciplinary approach in order to prevent severe bleeding complications


Humans , Female , Pregnancy , Adult , Purpura, Thrombocytopenic/complications , Pregnancy Complications, Hematologic , Labor, Obstetric , Obstetric Labor Complications , Pregnancy, Twin , Hemorrhage/prevention & control , Analgesia, Obstetrical/methods , Pregnancy Outcome
12.
J Clin Virol ; 83: 61-2, 2016 10.
Article En | MEDLINE | ID: mdl-27596376

We report here two cases of thrombocytopenic purpura at onset of Zika virus infection. A 26-year-old woman and a 21-year-old man had thrombocytopenia above 5×10(9) platelets/L. Hemorrhagic symptoms were mucosal and subcutaneous bleeding and gross hematuria and they reported episode of conjunctivitis. In both cases blood and bone marrow analysis suggested thrombocytopenic purpura, blood PCR tests for Dengue (DENV), Chikungunya (CHIKV) and Zika virus (ZIKV) were negative. In both cases urinary PCR for ZIKV was positive, Prednisolone yielded early remission. Only three similar cases have been reported so far. In the Caribbean, DENV is also epidemic and responsible for severe thrombocytopenia. Coinfections can occur. Our report underlines the need to include a ZIKV assay in the diagnostic work-up of thrombocytopenic purpura in epidemic areas.


Purpura, Thrombocytopenic , Zika Virus Infection , Zika Virus , Adult , Female , Humans , Male , Purpura, Thrombocytopenic/complications , Purpura, Thrombocytopenic/diagnosis , Young Adult , Zika Virus Infection/complications , Zika Virus Infection/diagnosis
14.
Clin Appl Thromb Hemost ; 22(2): 115-20, 2016 Mar.
Article En | MEDLINE | ID: mdl-25115760

Nowadays, we have a relatively sophisticated standard approach to a patient with acute ischemic stroke, including the sequence of diagnostic methods and treatment modalities. In practice, however, we are occasionally confronted with a patient whose medical history or comorbidities force us to make a decision without the support of guidelines. One such situation is the occurrence of acute ischemic stroke in a patient with known idiopathic thrombocytopenic purpura, where a tendency to use thrombolysis, anticoagulants, or antiplatelet agents collides with the fear of life-threatening bleeding. In this review, we try to outline current understanding of the pathophysiology of "paradoxical" ischemic events in this illness characterized by thrombocytopenia and to summarize clinical experience from case reports dealing with this topic, which could help us to rely on more than individual opinion seen through a purely "neurological" or "hematological" prism.


Anticoagulants/therapeutic use , Brain Ischemia , Platelet Aggregation Inhibitors/therapeutic use , Purpura, Thrombocytopenic , Stroke , Thrombolytic Therapy/methods , Brain Ischemia/diagnosis , Brain Ischemia/etiology , Brain Ischemia/therapy , Humans , Purpura, Thrombocytopenic/complications , Purpura, Thrombocytopenic/diagnosis , Purpura, Thrombocytopenic/therapy , Stroke/diagnosis , Stroke/etiology , Stroke/therapy
16.
J Natl Compr Canc Netw ; 12(11): 1505-9, 2014 Nov.
Article En | MEDLINE | ID: mdl-25361796

Although the association of pure red cell aplasia (PRCA) and aplastic anemia with thymoma is well-known, acquired amegakaryocytic thrombocytopenia (AAMT) is not a recognized paraneoplastic manifestation of thymoma. This report discusses a patient with recurrent thymoma complicated by myasthenia gravis, PRCA, and AAMT. Both PRCA and AAMT are diagnosed after a thymoma recurrence, 11 years after complete resection of the initial tumor and 9 months after chemotherapy for the relapsed disease. Both PRCA and AAMT responded to immunosuppression with cyclosporine, corticosteroid, and an abbreviated course of antithymocyte globulin, achieving a very good erythroid response and a complete remission for AAMT, suggesting that AAMT, although extremely rare, can be an immune-mediated paraneoplastic manifestation of thymoma.


Bone Marrow Diseases/complications , Purpura, Thrombocytopenic/complications , Red-Cell Aplasia, Pure/complications , Thymoma/etiology , Thymus Neoplasms/etiology , Adult , Humans , Male
17.
Acta pediatr. esp ; 72(9): e315-e320, oct. 2014.
Article Es | IBECS | ID: ibc-129397

La hepatitis autoinmune y la enfermedad celiaca son dos entidades de base inmune con demostrada relación entre sí. La púrpura trombocitopénica idiopática, o autoinmune, es una entidad de base inmune en la que la existencia de unos anticuerpos IgG frente a la superficie de las plaquetas provoca plaquetopenia. A su vez, se han descrito casos de presentación de hepatitis autoinmune junto con púrpura trombocitopénica idiopática, así como de enfermedad celiaca junto con púrpura trombocitopénica idiopática. Presentamos el caso de una niña de 4 años que presenta un cuadro de anemia ferropénica y púrpura trombocitopénica idiopática, junto con enfermedad celiaca y hepatitis autoinmune (AU)


Autoimmune hepatitis and celiac disease are two immune-mediated conditions, with proven association with each other. Idiopathic thrombocytopenic purpura (ITP) is an autoimmune or immune-based entity in which the existence of IgG antibodies against platelet surface causes thrombocytopenia. The association between autoimmune hepatitis with idiopathic thrombocytopenic purpura and between celiac disease and idiopathic thrombocytopenic purpura has been previously described. We report the case of a 4 year old girl who presents with anemia and Idiopathic thrombocytopenic purpura, along with celiac disease and autoimmune hepatitis (AU)


Humans , Female , Child, Preschool , Hepatitis, Autoimmune/complications , Celiac Disease/epidemiology , Purpura, Thrombocytopenic/complications , Anemia, Iron-Deficiency/complications
19.
Rev Inst Med Trop Sao Paulo ; 56(3): 267-70, 2014.
Article En | MEDLINE | ID: mdl-24879007

Dengue is currently a major public-health problem. Dengue virus (DENV) is classified into four distinct serotypes, DENV 1-4. After 28 years of absence, DENV-4 was again detected in Brazil in 2010 in Roraima State, and one year later, the virus was identified in the northern Brazilian states of Amazonas and Pará, followed by Rio de Janeiro and São Paulo. In Minas Gerais, the first confirmed case of DENV-4 occurred in the municipality of Frutal in 2011 and has now been isolated from a growing number of patients. Although DENV-2 is associated with the highest risk of severe forms of the disease and death due to the infection, DENV-4 has also been associated with severe forms of the disease and an increasing risk of hemorrhagic manifestations. Herein, the first fatal case of confirmed DENV-4 in Brazil is reported. The patient was an 11-year-old girl from the municipality of Montes Claros in northern Minas Gerais State, Brazil. She had idiopathic thrombocytopenic purpura as a comorbid condition and presented with a fulminant course of infection, leading to death due to hemorrhagic complications. Diagnosis was confirmed by detection of Dengue-specific antibodies using IgM capture enzyme-linked immunosorbent assay and semi-nested RT-PCR. Primary care physicians and other health-care providers should bear in mind that DENV-4 can also result in severe forms of the disease and lead to hemorrhagic complications and death, mainly when dengue infection is associated with coexisting conditions.


Dengue Virus/isolation & purification , Dengue/virology , Purpura, Thrombocytopenic/complications , Antibodies, Viral/blood , Child , Dengue/complications , Dengue Virus/genetics , Dengue Virus/immunology , Enzyme-Linked Immunosorbent Assay , Fatal Outcome , Female , Humans , Immunoglobulin M/blood , Reverse Transcriptase Polymerase Chain Reaction
20.
Rev. Inst. Med. Trop. Säo Paulo ; 56(3): 267-270, May-Jun/2014. tab, graf
Article En | LILACS | ID: lil-710403

Dengue is currently a major public-health problem. Dengue virus (DENV) is classified into four distinct serotypes, DENV 1-4. After 28 years of absence, DENV-4 was again detected in Brazil in 2010 in Roraima State, and one year later, the virus was identified in the northern Brazilian states of Amazonas and Pará, followed by Rio de Janeiro and São Paulo. In Minas Gerais, the first confirmed case of DENV-4 occurred in the municipality of Frutal in 2011 and has now been isolated from a growing number of patients. Although DENV-2 is associated with the highest risk of severe forms of the disease and death due to the infection, DENV-4 has also been associated with severe forms of the disease and an increasing risk of hemorrhagic manifestations. Herein, the first fatal case of confirmed DENV-4 in Brazil is reported. The patient was an 11-year-old girl from the municipality of Montes Claros in northern Minas Gerais State, Brazil. She had idiopathic thrombocytopenic purpura as a comorbid condition and presented with a fulminant course of infection, leading to death due to hemorrhagic complications. Diagnosis was confirmed by detection of Dengue-specific antibodies using IgM capture enzyme-linked immunosorbent assay and semi-nested RT-PCR. Primary care physicians and other health-care providers should bear in mind that DENV-4 can also result in severe forms of the disease and lead to hemorrhagic complications and death, mainly when dengue infection is associated with coexisting conditions.


Dengue é atualmente um importante problema de saúde pública. O vírus da dengue (DENV) é classificado em quatro sorotipos distintos, DENV 1-4. Após 28 anos de ausência, o DENV-4 foi detectado novamente no Brasil em 2010 no Estado de Roraima, e um ano depois, o vírus foi identificado em outros estados do norte do país, Amazonas e Pará, seguido pelos estados do Rio de Janeiro e São Paulo. Em Minas Gerais, o primeiro caso confirmado de DENV-4 ocorreu no município de Frutal em 2011 e, desde então, o sorotipo foi isolado em um número crescente de pacientes. Apesar do DENV-2 estar associado a um maior risco de formas graves e morte, o DENV-4 também tem sido associado a casos graves e a risco aumentado de manifestações hemorrágicas. Neste relato, descrevemos o primeiro caso fatal confirmado por DENV-4 no Brasil. A paciente era uma menina de 11 anos do município de Montes Claros, no norte de Minas Gerais, Brasil. Apresentava púrpura trombocitopênica idiopática e evoluiu de forma fulminante durante a infecção por dengue, com óbito associado a complicações hemorrágicas. O diagnóstico foi confirmado pela detecção de anticorpos IgM específicos para dengue, por método imunoenzimático, e por semi-nested RT-PCR. Médicos e outros profissionais de saúde devem estar cientes que infecções por DENV-4 também podem resultar em formas graves da doença com complicações hemorrágicas e óbito, principalmente em pacientes com comorbidades.


Child , Female , Humans , Dengue Virus/isolation & purification , Dengue/virology , Purpura, Thrombocytopenic/complications , Antibodies, Viral/blood , Dengue Virus/genetics , Dengue Virus/immunology , Dengue/complications , Enzyme-Linked Immunosorbent Assay , Fatal Outcome , Immunoglobulin M/blood , Reverse Transcriptase Polymerase Chain Reaction
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