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1.
JBJS Case Connect ; 14(2)2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38728442

RESUMO

CASE: A 71-year-old woman presented with post-traumatic arthritis 11 months after open reduction and internal fixation for a left proximal humerus fracture (PHF) dislocation. After revision to reverse total shoulder arthroplasty (rTSA), the patient's left upper extremity was found to be avascular. An emergent thrombectomy was performed with restoration of arterial flow after removal of an acute-on-chronic axillary artery thrombus. CONCLUSION: Although rare, as rTSA becomes more common for management of PHF, incidence of associated vascular injuries is likely to rise. Screening methods and clinical vigilance in diagnosis are advised for patients with anterior PHF dislocations and arterial injury risk factors.


Assuntos
Artroplastia do Ombro , Artéria Axilar , Fraturas do Ombro , Trombose , Humanos , Feminino , Idoso , Artéria Axilar/cirurgia , Artéria Axilar/lesões , Artéria Axilar/diagnóstico por imagem , Fraturas do Ombro/cirurgia , Fraturas do Ombro/diagnóstico por imagem , Artroplastia do Ombro/efeitos adversos , Trombose/etiologia , Trombose/diagnóstico por imagem , Trombose/cirurgia , Fixação Interna de Fraturas/efeitos adversos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/diagnóstico por imagem , Redução Aberta/efeitos adversos , Reoperação
2.
BMC Cardiovasc Disord ; 24(1): 278, 2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38811882

RESUMO

BACKGROUND: Left ventricular thrombus (LVT) is a serious complication after myocardial infarction. However, due to its asymptomatic nature, early detection is challenging. We aimed to explore the differences in clinical correlates of LVT found in acute to subacute and chronic phases of myocardial infarction. METHODS: We collected data from 153 patients who were diagnosed with LVT after myocardial infarction at the Affiliated Hospital of Qingdao University from January 2013 to December 2022. Baseline information, inflammatory markers, transthoracic echocardiograph (TTE) data and other clinical correlates were collected. Patients were categorized into acute to subacute phase group (< 30 days) and chronic phase group (30 days and after) according to the time at which echocardiograph was performed. The resolution of thrombus within 90 days is regarded as the primary endpoint event. We fitted logistic regression models to relating clinical correlates with phase-specific thrombus resolution. RESULTS: For acute to subacute phase thrombus patients: C-reactive protein levels (OR: 0.95, 95% CI: 0.918-0.983, p = 0.003) were significantly associated with thrombus resolution. For chronic phase thrombus patients: anticoagulant treatment was associated with 5.717-fold odds of thrombus resolution (OR: 5.717, 95% CI: 1.543-21.18, p = 0.009). CONCLUSIONS: Higher levels of CRP were associated with lower likelihood of LVT resolution in acute phase myocardial infarction; Anticoagulant therapy is still needed for thrombus in the chronic stage of myocardial infarction.


Assuntos
Trombose , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Fatores de Tempo , Trombose/diagnóstico por imagem , Trombose/etiologia , Idoso , Fatores de Risco , Anticoagulantes/uso terapêutico , Proteína C-Reativa/análise , Proteína C-Reativa/metabolismo , Estudos Retrospectivos , Infarto do Miocárdio/diagnóstico por imagem , Infarto do Miocárdio/diagnóstico , Biomarcadores/sangue , Resultado do Tratamento , Cardiopatias/diagnóstico por imagem , Cardiopatias/etiologia , Cardiopatias/diagnóstico , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/fisiopatologia , China , Ecocardiografia , Função Ventricular Esquerda
3.
BMC Cardiovasc Disord ; 24(1): 281, 2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38811879

RESUMO

BACKGROUND: Acute coronary syndrome due to coronary artery embolism in the setting of ascending aortic thrombus is an uncommon condition, even rarer when there is no aortic pathology such as aneurysm, severe atherosclerosis, aortic dissection, or thrombophilia (whether inherited or acquired). CASE PRESENTATION: We report a case of a 58-year-old male presented with acute chest pain, electrocardiogram showing non-ST-elevation acute coronary syndrome. The computed tomography angiography of coronary artery revealed a mural thrombus in the proximal part of ascending aorta, located above the left coronary artery ostium, without any aortic pathologies. With the exception of hypertension and cigarette smoking, no other risk factors were identified in this patient that may increase the risk of thrombosis. Given the life-threatening risk of interventional therapy and surgery, the patient determinedly opted for anticoagulant and dual antiplatelet therapy. Then he experienced the reoccurrence of chest pain after 6-day treatment, progressed to anterior and inferior ST-segment elevation myocardial infarction. Coronary artery embolism originating from the ascending aortic thrombus was suspected. Considering the hemodynamic instability of the patient, the medical treatment was continued and bridged to warfarin and aspirin after discharge. Follow-up computed tomography angiography at 6 months showed no obstruction in coronary artery and complete resolution of the thrombus. No thromboembolic events occurred henceforward. CONCLUSIONS: Acute coronary syndrome could be a manifestation of secondary coronary embolism due to ascending aortic thrombus. Currently, there is no standardized guideline for the treatment of aortic mural thrombus, individualized treatment is recommended. When surgical therapy is not applicable for the patient, anticoagulation and dual antiplatelet treatment are alternative treatments that may successfully lead to the resolution of the aortic thrombus.


Assuntos
Síndrome Coronariana Aguda , Doenças da Aorta , Recidiva , Humanos , Masculino , Pessoa de Meia-Idade , Síndrome Coronariana Aguda/etiologia , Síndrome Coronariana Aguda/diagnóstico , Síndrome Coronariana Aguda/terapia , Síndrome Coronariana Aguda/diagnóstico por imagem , Resultado do Tratamento , Doenças da Aorta/diagnóstico por imagem , Doenças da Aorta/etiologia , Doenças da Aorta/complicações , Trombose/diagnóstico por imagem , Trombose/etiologia , Trombose/tratamento farmacológico , Anticoagulantes/uso terapêutico , Angiografia por Tomografia Computadorizada , Angiografia Coronária , Inibidores da Agregação Plaquetária/uso terapêutico , Infarto do Miocárdio sem Supradesnível do Segmento ST/diagnóstico por imagem , Infarto do Miocárdio sem Supradesnível do Segmento ST/terapia , Infarto do Miocárdio sem Supradesnível do Segmento ST/etiologia , Aortografia
4.
Sci Rep ; 14(1): 10438, 2024 05 07.
Artigo em Inglês | MEDLINE | ID: mdl-38714704

RESUMO

Thrombus formation in extracorporeal membrane oxygenation (ECMO) remains a major concern as it can lead to fatal outcomes. To the best of our knowledge, there is no standard non-invasive method for quantitatively measuring thrombi. This study's purpose was to verify thrombus detection in an ECMO circuit using novel, non-invasive ultrasonic sensors in real-time, utilizing the fact that the ultrasonic velocity in a thrombus is known to be higher than that in the blood. Ultrasonic sensors with a customized chamber, an ultrasonic pulse-receiver, and a digital storage oscilloscope (DSO) were used to set up the measuring unit. The customized chamber was connected to an ECMO circuit primed with porcine blood. Thrombi formed from static porcine blood were placed in the circuit and ultrasonic signals were extracted from the oscilloscope at various ECMO flow rates of 1-4 L/min. The ultrasonic signal changes were successfully detected at each flow rate on the DSO. The ultrasonic pulse signal shifted leftward when a thrombus passed between the two ultrasonic sensors and was easily detected on the DSO screen. This novel real-time non-invasive thrombus detection method may enable the early detection of floating thrombi in the ECMO system and early management of ECMO thrombi.


Assuntos
Oxigenação por Membrana Extracorpórea , Trombose , Oxigenação por Membrana Extracorpórea/métodos , Oxigenação por Membrana Extracorpórea/instrumentação , Trombose/diagnóstico por imagem , Trombose/diagnóstico , Animais , Suínos , Ultrassom , Ultrassonografia/métodos
5.
Ann Card Anaesth ; 27(1): 68-69, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38722126

RESUMO

ABSTRACT: The occurrence of pulmonary artery thrombus in association with rheumatic mitral stenosis is a rare complication. Pulmonary artery thrombus formation may worsen pulmonary artery pressures, and this may precipitate acute right heart failure. The possible mechanisms behind pulmonary artery thrombus formation during mitral valve replacement surgery could be acute coagulopathy following surgery, the presence of chronic pulmonary thromboembolism, or chronic atrial fibrillation. We report an unusual case of pulmonary artery thrombus in a patient with rheumatic MS which was diagnosed with transoesophageal echocardiography after MVR.


Assuntos
Diagnóstico Tardio , Ecocardiografia Transesofagiana , Implante de Prótese de Valva Cardíaca , Valva Mitral , Artéria Pulmonar , Trombose , Humanos , Implante de Prótese de Valva Cardíaca/efeitos adversos , Artéria Pulmonar/diagnóstico por imagem , Ecocardiografia Transesofagiana/métodos , Trombose/diagnóstico por imagem , Trombose/etiologia , Valva Mitral/cirurgia , Valva Mitral/diagnóstico por imagem , Estenose da Valva Mitral/cirurgia , Feminino , Cardiopatia Reumática/complicações , Cardiopatia Reumática/cirurgia , Embolia Pulmonar/etiologia , Embolia Pulmonar/diagnóstico por imagem , Pessoa de Meia-Idade
6.
Kyobu Geka ; 77(5): 330-334, 2024 May.
Artigo em Japonês | MEDLINE | ID: mdl-38720599

RESUMO

Hepatic abscesses are divided into bacterial and amoebic types. Although the prognosis of bacterial liver abscesses has improved owing to progress in drainage techniques and antimicrobial agents, poor outcomes remain common. While there have been some reports of amoebic liver abscesses complicated by thrombosis, bacterial liver abscesses and subsequent thrombus in the right atrium are very rare. We herein report the case of an 82-year-old man. He had suffered acute obstructive suppurative cholangitis 10 months previously, and bile culture yielded Enterococcus faecalis. In the present case, a right atrial thrombus caused by a bacterial liver abscess was observed and the causative organism was thought to be Enterococcus faecalis, for which was detected in a blood culture was positive. The patient was successfully treated with hepatic abscess drainage and surgical right atrial thrombectomy under cardiopulmonary bypass with a beating heart.


Assuntos
Átrios do Coração , Cardiopatias , Abscesso Hepático Piogênico , Trombose , Humanos , Masculino , Abscesso Hepático Piogênico/diagnóstico por imagem , Abscesso Hepático Piogênico/complicações , Abscesso Hepático Piogênico/cirurgia , Idoso de 80 Anos ou mais , Átrios do Coração/cirurgia , Trombose/cirurgia , Trombose/diagnóstico por imagem , Trombose/complicações , Cardiopatias/complicações , Cardiopatias/cirurgia , Cardiopatias/diagnóstico por imagem , Enterococcus faecalis , Infecções por Bactérias Gram-Positivas/complicações
7.
Sci Rep ; 14(1): 10092, 2024 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-38698141

RESUMO

Carotid artery webs (CaW) are non-atherosclerotic projections into the vascular lumen and have been linked to up to one-third of cryptogenic strokes in younger patients. Determining how CaW affects local hemodynamics is essential for understanding clot formation and stroke risk. Computational fluid dynamics simulations were used to investigate patient-specific hemodynamics in carotid artery bifurcations with CaW, bifurcations with atherosclerotic lesions having a similar degree of lumen narrowing, and with healthy carotid bifurcations. Simulations were conducted using segmented computed tomography angiography geometries with inlet boundary conditions extracted from 2D phase contrast MRI scans. The study included carotid bifurcations with CaW (n = 13), mild atherosclerosis (n = 7), and healthy bifurcation geometries (n = 6). Hemodynamic parameters associated with vascular dysfunction and clot formation, including shear rate, oscillatory shear index (OSI), low velocity, and flow stasis were calculated and compared between the subject groups. Patients with CaW had significantly larger regions containing low shear rate, high OSI, low velocity, and flow stasis in comparison to subjects with mild atherosclerosis or normal bifurcations. These abnormal hemodynamic metrics in patients with CaW are associated with clot formation and vascular dysfunction and suggest that hemodynamic assessment may be a tool to assess stroke risk in these patients.


Assuntos
Doenças das Artérias Carótidas , Hemodinâmica , Humanos , Masculino , Doenças das Artérias Carótidas/fisiopatologia , Doenças das Artérias Carótidas/diagnóstico por imagem , Feminino , Pessoa de Meia-Idade , Idoso , Artérias Carótidas/diagnóstico por imagem , Artérias Carótidas/fisiopatologia , Angiografia por Tomografia Computadorizada , Trombose/fisiopatologia , Trombose/diagnóstico por imagem , Imageamento por Ressonância Magnética
8.
J Med Case Rep ; 18(1): 243, 2024 May 11.
Artigo em Inglês | MEDLINE | ID: mdl-38730499

RESUMO

BACKGROUND: An ascending aortic thrombus is exceedingly rare. Two instances have been reported in the setting of lung cancer, but only after cisplatin use, which is associated with hypercoagulability. We present the first case of a patient with lung cancer who developed an ascending aortic thrombus without structural risk factors or chemotherapy use. CASE: A 60-year-old white female with significant smoking history presented with several weeks of malaise. A chest computed tomography scan revealed a 2.2-cm right upper lobe mass. As an outpatient, right hilar lymph node immunohistochemistry (IHC) samples via endobronchial ultrasound confirmed thyroid transcription factor-1 adenocarcinoma. After the procedure, the patient endorsed dyspnea and was advised to go to the emergency department. A chest computed tomography angiography identified a new 2.4 × 1.1 × 1.1 cm thrombus within the proximal aortic arch. No pulmonary emboli or intrapulmonary shunts were identified. A hypercoagulable workup was negative. Transthoracic echocardiogram was without left ventricular thrombus, akinesis or hypokinesis, left atrial dilation, or intracardiac shunts. A lower extremity ultrasound was negative for deep vein thrombosis. Given the procedural risk, thrombectomy was deferred. The patient was transitioned to enoxaparin, and a repeat computed tomography for resolution is in process. CONCLUSION: To our knowledge, this is the only case detailing an in situ ascending aortic thrombus in the setting of lung cancer, without structural risk factors, chemotherapy use, or other hypercoagulable comorbidities. Optimal management for an aortic thrombus and malignant disease is less clear. Clinicians should be vigilant for unusual arterial thromboses in patients with high metastatic burden.


Assuntos
Adenocarcinoma de Pulmão , Cisplatino , Neoplasias Pulmonares , Trombose , Humanos , Feminino , Pessoa de Meia-Idade , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Cisplatino/uso terapêutico , Trombose/diagnóstico por imagem , Adenocarcinoma de Pulmão/tratamento farmacológico , Adenocarcinoma de Pulmão/secundário , Adenocarcinoma de Pulmão/complicações , Doenças da Aorta/diagnóstico por imagem , Anticoagulantes/uso terapêutico , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/complicações , Enoxaparina/uso terapêutico , Antineoplásicos/uso terapêutico , Antineoplásicos/efeitos adversos , Angiografia por Tomografia Computadorizada , Aorta/diagnóstico por imagem , Aorta/patologia
9.
PLoS One ; 19(5): e0304520, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38787842

RESUMO

BACKGROUND: Mechanical thrombectomy (MT) has become the gold standard care for treating acute ischemic stroke (AIS) due to large vessel occlusion. Emerging evidence suggests that understanding the composition of clots prior to intervention could be useful for the selection of neuroendovascular techniques, potentially improving the efficacy of treatments. However, current imaging modalities lack the ability to distinguish clot composition accurately and reliably. Since water content can influence signal intensity on CT and MRI scans, its assessment may provide indirect clues about clot composition. This study aimed to elucidate the correlation between water content and clot composition using human clots retrieved from stroke patients and experimentally generated ovine clots. MATERIALS AND METHODS: This study involved an analysis of ten clots retrieved from patients with AIS undergoing MT. Additionally, we created ten red blood cells (RBC)-rich and ten fibrin-rich ovine blood clots, which were placed in a human intracranial vascular model under realistic flow conditions. The water content and compositions of these clots were evaluated, and linear regression analyses were performed to determine the relationship between clot composition and water content. RESULTS: The regression analysis in human stroke clots revealed a significant negative association between RBC concentration and water content. We also observed a positive correlation between water content and both fibrin and platelets in ovine blood clots. Conclusion.


Assuntos
AVC Isquêmico , Água , Animais , AVC Isquêmico/sangue , AVC Isquêmico/diagnóstico por imagem , Humanos , Ovinos , Trombectomia , Trombose/diagnóstico por imagem , Eritrócitos/metabolismo , Fibrina/metabolismo , Fibrina/análise , Imageamento por Ressonância Magnética/métodos , Masculino , Isquemia Encefálica/diagnóstico por imagem , Feminino
10.
Medicine (Baltimore) ; 103(21): e38206, 2024 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-38788025

RESUMO

OBJECTIVE: To evaluate left atrial volume and function in patients with paroxysmal atrial fibrillation (AF) combined with left atrial appendage thrombosis and patients with paroxysmal AF without left atrial appendage thrombosis by 3-dimensional speckle tracking imaging (3D-STI), and to explore the application value of this set of parameters in the evaluation of left atrial function in patients with paroxysmal AF. MATERIALS AND METHODS: A total of 40 patients with paroxysmal AF admitted from December 2018 to December 2020 were selected as the observation group. All patients with paroxysmal AF in the observation group underwent transesophageal echocardiography. According to the presence of left atrial appendage thrombosis, the patients were divided into the AF without thrombosis group (24 cases) and the AF with thrombosis group (16 cases). Thirty normal people were selected as control group who were chosen as having no heart-related disease. The left atrial volume parameters (Left atrial maximum volume LAVmax, Left atrial minimum volume LAVmin, Left atrial volume before atrial contraction LAVpre-A, Left atrial stroke volume LAEV), left atrial ejection fraction (LAEF) and left atrial strain parameters (Left atrial reservoir longitudinal strain LASr, Left atrial conduit longitudinal strain LAScd, Left atrial contraction longitudinal strain LASct, Left atrial reservoir circumferential strain LASr-c, Left atrial conduit circumferential strain LAScd-c, Left atrial contraction circumferential strain LASct-c) of the 3 groups were measured by 3D-STI. RESULTS: With the progression of paroxysmal AF, the left atrial volume increased, and the reservoir, conduit and contractile function were damaged. The left atrial volume continued to increase, and the reservoir, conduit and contractile function further decreased significantly in patients with AF combined with left atrial appendage thrombosis. LAEF was positively correlated with LASr and LASr_c. CONCLUSION: Real-time 3-dimensional spot tracking imaging (3D-STI) can evaluate the changes in left atrial volume and function in patients with paroxysmal AF, and has a certain reference value for clinical judgment of disease progression and prognosis.


Assuntos
Apêndice Atrial , Fibrilação Atrial , Função do Átrio Esquerdo , Humanos , Fibrilação Atrial/fisiopatologia , Fibrilação Atrial/diagnóstico por imagem , Masculino , Feminino , Pessoa de Meia-Idade , Função do Átrio Esquerdo/fisiologia , Apêndice Atrial/diagnóstico por imagem , Apêndice Atrial/fisiopatologia , Ecocardiografia Tridimensional/métodos , Átrios do Coração/diagnóstico por imagem , Átrios do Coração/fisiopatologia , Ecocardiografia Transesofagiana/métodos , Idoso , Trombose/diagnóstico por imagem , Trombose/etiologia , Trombose/fisiopatologia
11.
Europace ; 26(5)2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38691672

RESUMO

AIMS: Blood stasis is crucial in developing left atrial (LA) thrombi. LA appendage peak flow velocity (LAAFV) is a quantitative parameter for estimating thromboembolic risk. However, its impact on LA thrombus resolution and clinical outcomes remains unclear. METHODS AND RESULTS: The LAT study was a multicentre observational study investigating patients with atrial fibrillation (AF) and silent LA thrombi detected by transoesophageal echocardiography (TEE). Among 17 436 TEE procedures for patients with AF, 297 patients (1.7%) had silent LA thrombi. Excluding patients without follow-up examinations, we enrolled 169 whose baseline LAAFV was available. Oral anticoagulation use increased from 85.7% at baseline to 97.0% at the final follow-up (P < 0.001). During 1 year, LA thrombus resolution was confirmed in 130 (76.9%) patients within 76 (34-138) days. Conversely, 26 had residual LA thrombi, 8 had thromboembolisms, and 5 required surgical removal. These patients with failed thrombus resolution had lower baseline LAAFV than those with successful resolution (18.0 [15.8-22.0] vs. 22.2 [17.0-35.0], P = 0.003). Despite limited predictive power (area under the curve, 0.659; P = 0.001), LAAFV ≤ 20.0 cm/s (best cut-off) significantly predicted failed LA thrombus resolution, even after adjusting for potential confounders (odds ratio, 2.72; 95% confidence interval, 1.22-6.09; P = 0.015). The incidence of adverse outcomes including ischaemic stroke/systemic embolism, major bleeding, or all-cause death was significantly higher in patients with reduced LAAFV than in those with preserved LAAFV (28.4% vs. 11.6%, log-rank P = 0.005). CONCLUSION: Failed LA thrombus resolution was not rare in patients with AF and silent LA thrombi. Reduced LAAFV was associated with failed LA thrombus resolution and adverse clinical outcomes.


Assuntos
Anticoagulantes , Apêndice Atrial , Fibrilação Atrial , Ecocardiografia Transesofagiana , Trombose , Humanos , Fibrilação Atrial/fisiopatologia , Fibrilação Atrial/complicações , Masculino , Feminino , Apêndice Atrial/diagnóstico por imagem , Apêndice Atrial/fisiopatologia , Idoso , Trombose/fisiopatologia , Trombose/diagnóstico por imagem , Trombose/complicações , Pessoa de Meia-Idade , Velocidade do Fluxo Sanguíneo , Anticoagulantes/uso terapêutico , Fatores de Risco , Resultado do Tratamento , Doenças Assintomáticas , Fatores de Tempo , Cardiopatias/fisiopatologia , Cardiopatias/complicações , Cardiopatias/diagnóstico por imagem , Tromboembolia/etiologia , Tromboembolia/fisiopatologia , Idoso de 80 Anos ou mais , Função do Átrio Esquerdo
12.
J Emerg Med ; 66(5): e614-e618, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38702244

RESUMO

BACKGROUND: Left-sided intracardiac thrombi are most commonly seen in conditions with decreased cardiac flow, such as myocardial infarction or atrial fibrillation. They can be propagated into the systemic circulation, leading to a cerebrovascular accident. Identification of thrombus-in-transit via point-of-care ultrasound (POCUS) has the potential to change patient management given its association with high patient morbidity and mortality. CASE REPORT: An intubated 60-year-old man was transferred to our emergency department for management of altered mental status and seizure-like activity. The patient was markedly hypotensive on arrival, and cardiac POCUS was performed to identify potential causes of hypotension. A left ventricular thrombus-in-transit was identified. The thrombus was notably absent on a repeat POCUS examination < 10 min later, which led to concern for thrombus propagation. Furthermore, the patient's vasopressor requirements had significantly increased in that time period. Subsequent emergent neuroimaging revealed a large ischemic stroke in the left internal carotid and middle cerebral artery distribution. The patient was, unfortunately, deemed to not be a candidate for either thrombectomy or thrombolysis and ultimately expired in the hospital. Why Should an Emergency Physician Be Aware of This? Serial POCUS examinations identified the propagation of this patient's thrombus-in-transit, leading the physician to change the initial presumptive diagnosis and treatment course, and pursue further imaging and workup for ischemic stroke. Identification of a thrombus-in-transit is a clue to potentially underlying critical pathology and should be followed with serial POCUS examinations to assess for treatment efficacy and thrombus propagation.


Assuntos
Sistemas Automatizados de Assistência Junto ao Leito , Trombose , Ultrassonografia , Humanos , Masculino , Pessoa de Meia-Idade , Trombose/diagnóstico por imagem , Ultrassonografia/métodos , Serviço Hospitalar de Emergência/organização & administração , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/fisiopatologia , Hipotensão/etiologia , Cardiopatias/diagnóstico , Cardiopatias/complicações , Evolução Fatal
14.
Sci Rep ; 14(1): 12325, 2024 05 29.
Artigo em Inglês | MEDLINE | ID: mdl-38811621

RESUMO

Knowledge of thrombus behavior and visualization on MRI in acute ischemic stroke is less than optimal. However, MRI sequences could be enhanced based on the typical T1 and T2 relaxation times of the target tissues, which mainly determine their signal intensities on imaging. We studied the relaxation times of a broad spectrum of clot analogs along with their image characteristics of three sequences analyzed: a T1-weighted turbo inversion-recovery sequence (T1w Turbo IR), a T1-weighted turbo spin echo with fat suppression (T1w TSE SPIR), and a T2-weighted 3D TSE with magnetization refocusing to remove T1 dependence (T2w TSE DRIVE). We compared their imaging behavior with the intensity values of normal brain tissue using the same imaging protocols as for clots. Each histological and biochemical clot component contributed to each of the relaxation times. Overall, histological composition correlated strongly with T1 times, and iron content, specifically, with T2 relaxation time. Using decision trees, fibrin content was selected as the primary biomarker for T1 relaxation times, inducing an increase. Up to four clot subgroups could be defined based on its distinctive T1 relaxation time. Clot signal intensity in the T1 and T2-weighted images varied significantly according to T1 and T2 relaxation times. Moreover, in comparison with normal brain tissue intensity values, T2w DRIVE images depict thrombi according to the principle of the more fibrin, the higher the intensity, and in T1w TSE, the more erythrocytes, the higher the intensity. These findings could facilitate improvements in MRI sequences for clot visualization and indicate that T2w DRIVE and T1w TSE sequences should depict the vast majority of acute ischemic stroke thrombi as more hyperintense than surrounding tissues.


Assuntos
AVC Isquêmico , Imageamento por Ressonância Magnética , Trombose , Imageamento por Ressonância Magnética/métodos , Humanos , AVC Isquêmico/diagnóstico por imagem , AVC Isquêmico/patologia , Trombose/diagnóstico por imagem , Encéfalo/diagnóstico por imagem , Encéfalo/patologia , Fibrina/metabolismo , Processamento de Imagem Assistida por Computador
15.
Sci Rep ; 14(1): 11919, 2024 05 24.
Artigo em Inglês | MEDLINE | ID: mdl-38789497

RESUMO

The purpose of this study was to evaluate pre-treatment CT findings in patients with acute pulmonary embolism (PE) and determine the imaging findings associated with residual hypoperfused segments in post-treatment lung perfused blood volume (LPBV). We evaluated 91 patients with acute PE who underwent dual-energy CT before and after treatment. The location of thrombi (proximal or distal) and patency of the pulmonary artery (occlusive or non-occlusive) were recorded using pre-treatment computed tomography pulmonary angiography (CTPA). Residual hypoperfusion was defined as a perfusion-decreased area seen in both the pre- and post-treatment LPBVs. The association of the location of the thrombus and vascular patency of pre-treatment CTPA with residual hypoperfusion on a segmental and patient basis was examined. In the segment-based analysis, the proportion of residual hypoperfusion in the proximal group was significantly higher than that in the peripheral group (33/125 [26.4%] vs. 9/87 [10.3%], P = 0.004). Patient-based analysis also showed that the proportion of residual hypoperfusion in patients with pre-treatment proximal thrombus was significantly higher than those without (16/42 [38.1%] vs. 3/25 (12.0%); P = 0.022). Pre-treatment vascular patency was not significantly associated with residual hypoperfusion (P > 0.05). Therefore, careful follow-up is necessary, especially in patients with proximal thrombi.


Assuntos
Volume Sanguíneo , Pulmão , Embolia Pulmonar , Tomografia Computadorizada por Raios X , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Embolia Pulmonar/diagnóstico por imagem , Pulmão/diagnóstico por imagem , Pulmão/irrigação sanguínea , Tomografia Computadorizada por Raios X/métodos , Artéria Pulmonar/diagnóstico por imagem , Artéria Pulmonar/fisiopatologia , Adulto , Idoso de 80 Anos ou mais , Estudos Retrospectivos , Trombose/diagnóstico por imagem , Angiografia por Tomografia Computadorizada/métodos
16.
J Med Vasc ; 49(2): 115-117, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38697708

RESUMO

Behçet's disease is a systemic vasculitis characterized by recurrent bipolar aphtosis and ophthalmic disorders. Cardiac involvement is rarely reported and could be associated to poor prognosis. Intracardiac thrombosis is exceptional and represents a therapeutic issue. We report the case of a young man admitted in internal medicine department for management of prolonged fever and recurrent mouth ulcers.


Assuntos
Síndrome de Behçet , Recidiva , Humanos , Síndrome de Behçet/complicações , Síndrome de Behçet/diagnóstico , Síndrome de Behçet/tratamento farmacológico , Masculino , Adulto , Resultado do Tratamento , Trombose/etiologia , Trombose/diagnóstico por imagem , Cardiopatias/etiologia , Cardiopatias/diagnóstico por imagem , Anticoagulantes/uso terapêutico
17.
J Cardiothorac Surg ; 19(1): 165, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38561816

RESUMO

BACKGROUND: Right-side heart mass can be found incidentally on routine transthoracic echocardiography (TTE). Accurate diagnosis of cardiac mass often requires more than one imaging method. We present a mid-age woman with non-Hodgkin lymphoma who was found to have multiple right atrial masses mimicking metastases on routine TTE, which were finally diagnosed as thrombi by multimodal cardiac imaging. CASE PRESENTATION: A 52-year-old woman was diagnosed with primary mediastinal diffuse large B cell lymphoma (DLBCL) almost six months prior. The TTE revealed multiple masses in the right atrium with normal cardiac function when she was being evaluated for the next chemotherapy. On arrival, she was hemodynamically stable and asymptomatic. Physical examination was no remarkable. Laboratory findings showed leukocytosis of 17,900 cells/mm3, hemoglobin of 7.5 mg/dL, and a normal D-dimer level. The suspicious diagnosis of right atrial metastasis was made by TEE. However, the diagnosis of right atrial thrombi was made by contrast CMR. Finally, the 18 F-FDG PET-CT demonstrated no metabolic activity in the right atrium, which further supported the diagnosis of thrombi. Eventually, the masses were removed by cardiopulmonary bypass thoracotomy because of a high risk of pulmonary embolism. Histopathology confirmed the diagnosis of thrombi. CONCLUSIONS: This case highlights the importance of multimodality cardiac imaging in the appropriate diagnosis of a RA masses in patient of lymphoma. Diagnosis of RA masses can be made using multimodal cardiac imaging like TTE, TEE and CMR, even PET. Echocardiography is the most commonly used on multimodal imaging in cardiac thrombus. CMR has high specificity in differentiating a tumor from thrombus, while 18 F-FDG PET has good sensitivity to determine the nature of the masses.


Assuntos
Linfoma não Hodgkin , Trombose , Feminino , Humanos , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Fluordesoxiglucose F18 , Átrios do Coração/diagnóstico por imagem , Trombose/diagnóstico por imagem , Linfoma não Hodgkin/diagnóstico por imagem
18.
Eur Radiol Exp ; 8(1): 52, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38575701

RESUMO

BACKGROUND: Nowadays, there is no method to quantitatively characterize the material composition of acute ischemic stroke thrombi prior to intervention, but dual-energy CT (DE-CT) offers imaging-based multimaterial decomposition. We retrospectively investigated the material composition of thrombi ex vivo using DE-CT with histological analysis as a reference. METHODS: Clots of 70 patients with acute ischemic stroke were extracted by mechanical thrombectomy and scanned ex vivo in formalin-filled tubes with DE-CT. Multimaterial decomposition in the three components, i.e., red blood cells (RBC), white blood cells (WBC), and fibrin/platelets (F/P), was performed and compared to histology (hematoxylin/eosin staining) as reference. Attenuation and effective Z values were assessed, and histological composition was compared to stroke etiology according to the Trial of ORG 10172 in Acute Stroke Treatment (TOAST) criteria. RESULTS: Histological and imaging analysis showed the following correlation coefficients for RBC (r = 0.527, p < 0.001), WBC (r = 0.305, p = 0.020), and F/P (r = 0.525, p < 0.001). RBC-rich thrombi presented higher clot attenuation in Hounsfield units than F/P-rich thrombi (51 HU versus 42 HU, p < 0.01). In histological analysis, cardioembolic clots showed less RBC (40% versus 56%, p = 0.053) and more F/P (53% versus 36%, p = 0.024), similar to cryptogenic clots containing less RBC (34% versus 56%, p = 0.006) and more F/P (58% versus 36%, p = 0.003) than non-cardioembolic strokes. No difference was assessed for the mean WBC portions in all TOAST groups. CONCLUSIONS: DE-CT has the potential to quantitatively characterize the material composition of ischemic stroke thrombi. RELEVANCE STATEMENT: Using DE-CT, the composition of ischemic stroke thrombi can be determined. Knowledge of histological composition prior to intervention offers the opportunity to define personalized treatment strategies for each patient to accomplish faster recanalization and better clinical outcomes. KEY POINTS: • Acute ischemic stroke clots present different recanalization success according to histological composition. • Currently, no method can determine clot composition prior to intervention. • DE-CT allows quantitative material decomposition of thrombi ex vivo in red blood cells, white blood cells, and fibrin/platelets. • Histological clot composition differs between stroke etiology. • Insights into the histological composition in situ offer personalized treatment strategies.


Assuntos
AVC Isquêmico , Acidente Vascular Cerebral , Trombose , Humanos , Estudos Retrospectivos , Trombose/diagnóstico por imagem , Trombose/patologia , Trombose/terapia , Acidente Vascular Cerebral/diagnóstico por imagem , Acidente Vascular Cerebral/patologia , Acidente Vascular Cerebral/terapia , Fibrina/análise , Tomografia Computadorizada por Raios X/métodos
19.
Methodist Debakey Cardiovasc J ; 20(1): 23-25, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38618609

RESUMO

A 51-year-old male with a complicated medical history presented with shortness of breath. Preoperative workup confirmed the presence of a large atrial mass. However, delayed gadolinium enhancement CMR with long inversion time (TI 600) showed lack of enhancement, which was suggestive of a thrombus. During cardiac magnetic resonance imaging, delayed gadolinium enhancement sequences with long inversion time (TI 600) are commonly used to distinguish between an avascular thrombus versus a vascular tumor.


Assuntos
Mixoma , Trombose , Masculino , Humanos , Pessoa de Meia-Idade , Meios de Contraste , Gadolínio , Imageamento por Ressonância Magnética , Átrios do Coração/diagnóstico por imagem , Átrios do Coração/cirurgia , Mixoma/complicações , Mixoma/diagnóstico por imagem , Mixoma/cirurgia , Trombose/diagnóstico por imagem , Trombose/cirurgia
20.
Artigo em Inglês | MEDLINE | ID: mdl-38618610

RESUMO

Left ventricular assist devices serve as a salvage therapy for patients with advanced heart failure. Complications such as thrombosis and obstruction can lead to acute device malfunction, posing significant clinical risks. A multidisciplinary approach is crucial for management. Few cases in the literature have demonstrated the safety and efficacy of percutaneous intervention, which holds significant value due to its less invasive nature and minimal risk of morbidity, especially in high-risk surgical patients.


Assuntos
Insuficiência Cardíaca , Coração Auxiliar , Trombose , Humanos , Trombose/diagnóstico por imagem , Trombose/etiologia , Trombose/terapia , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/terapia
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