Base de dados : LILACS
Pesquisa : D27.505.259.500 [Categoria DeCS]
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Id: biblio-1045728
Autor: Djordjevic, I; Krstic, M; Slavkovic, A; Marjanovic, Z; Kostic, A.
Título: Barium-induced appendicitis in a 13-year old girl
Fonte: West Indian med. j;62(7):680-681, Sept. 2013. ilus.
Idioma: en.
Descritores: Apendicite/etiologia
Sulfato de Bário/efeitos adversos
Meios de Contraste/efeitos adversos
-Supuração
Limites: Humanos
Feminino
Adolescente
Tipo de Publ: Relatos de Casos
Carta
Responsável: BR1.1 - BIREME


  2 / 493 LILACS  
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Id: biblio-975650
Autor: Mussi, Thais Caldara; Martins, Tatiana; Dantas, George Caldas; Garcia, Rodrigo Gobbo; Filippi, Renee Zon; Lemos, Gustavo Caserta; Baroni, Ronaldo Hueb.
Título: Comparison between multiparametric MRI with and without post - contrast sequences for clinically significant prostate cancer detection
Fonte: Int. braz. j. urol;44(6):1129-1138, Nov.-Dec. 2018. tab, graf.
Idioma: en.
Resumo: ABSTRACT Background: Dynamic-contrast enhanced (DCE) sequence is used to increase detection of small lesions, based on increased vascularization. However, literature is controversy about the real incremental value of DCE in detection of clinically significant (CS) prostate cancer (PCa), since absence of enhancement does not exclude cancer, and enhancement alone is not definitive for tumor. Purpose: To test the hypothesis that DCE images do not increase CS PCa detection on MRI prior to biopsy, comparing exams without and with contrast sequences. Material and Materials and Methods: All men who come to our institution to perform MRI on a 3T scanner without a prior diagnosis of CS PCa were invited to participate in this study. Reference standard was transrectal prostate US with systematic biopsy and MRI/US fusion biopsy of suspicious areas. Radiologists read the MRI images prospectively and independently (first only sequences without contrast, and subsequently the entire exam) and graded them on 5-points scale of cancer suspicion. Results: 102 patients were included. Overall detection on biopsy showed CS cancer in 43 patients (42.2%), clinically non-significant cancer in 11 (10.8%) and negative results in 48 patients (47%). Positivities for CS PCa ranged from 8.9% to 9.8% for low suspicion and 75.0% to 88.9% for very high suspicion. There was no statistical difference regarding detection of CS PCa (no statistical difference was found when compared accuracies, sensitivities, specificities, PPV and NPV in both types of exams). Inter-reader agreement was 0.59. Conclusion: Exams with and without contrast-enhanced sequences were similar for detection of CS PCa on MRI.
Descritores: Neoplasias da Próstata/diagnóstico por imagem
Imageamento por Ressonância Magnética/métodos
Meios de Contraste/administração & dosagem
-Valor Preditivo dos Testes
Sensibilidade e Especificidade
Pessoa de Meia-Idade
Limites: Humanos
Masculino
Adulto
Idoso
Idoso de 80 Anos ou mais
Tipo de Publ: Estudo Comparativo
Responsável: BR1.1 - BIREME


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Id: biblio-952799
Autor: Sun, Jie; Li, Zeheng.
Título: Study on the Correlation between Barium Radiography and Pulmonary Infection rate in the Evaluation of Swallowing Function
Fonte: Clinics;73:e182, 2018. tab.
Idioma: en.
Resumo: OBJECTIVES: To compare the results respectively obtained from the utilization of 60% barium sulfate suspension and Iohexol as contrast agents for videofluoroscopic swallowing studies and the relationship between the clinical application of the two kinds of contrast agents and the incidence of pneumonia. METHODS: Sixty cases of stroke patients with dysphagia were selected in rehabilitation department of our hospital, and the gender, age, position of the disease, and stroke nature between groups had no significant difference. Among which, 30 patients who were administered 350 mgI/ml Iohexol, and the other 30 patients with 60% barium sulfate suspension as contrast agent. We performed videofluoroscopic swallowing studies with barium 60% versus Iohexol within 1 week after admission and 2 weeks after admission. RESULTS: After 2 weeks in hospital, the aspiration pneumonia incidence of two groups was statistically significant (p<0.05), the pneumonia incidence of Iohexol group was lower than barium sulfate group which might have a impossble relevance with barium aspiration. CONCLUSIONS: During the videofluoroscopic swallowing study of dysphagia after stroke, barium sulfate can enhance the pneumonia incidence, and Iohexol can be widely applied in videofluoroscopic swallowing study.
Descritores: Pneumonia Aspirativa/induzido quimicamente
Sulfato de Bário/efeitos adversos
Fluoroscopia/métodos
Transtornos de Deglutição/diagnóstico por imagem
Meios de Contraste/efeitos adversos
-Pneumonia Aspirativa/diagnóstico
Sulfato de Bário/administração & dosagem
Gravação em Vídeo/métodos
Iohexol/administração & dosagem
Iohexol/efeitos adversos
Transtornos de Deglutição/complicações
Meios de Contraste/administração & dosagem
Deglutição/efeitos dos fármacos
Reabilitação do Acidente Vascular Cerebral/métodos
Limites: Humanos
Masculino
Feminino
Adulto
Pessoa de Meia-Idade
Idoso
Tipo de Publ: Research Support, Non-U.S. Gov't
Estudo Comparativo
Responsável: BR1.1 - BIREME


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Id: biblio-1040074
Autor: Saade, Charbel; Hamieh, Nadine; Deeb, Ibrahim Al-Sheikh; Haddad, Maurice; Abi-Ghanem, Alain S; Ghieh, Diamond; El-Merhi, Fadi.
Título: An augmented patient-specific approach to administration of contrast agent for CT renal angiography
Fonte: Int. braz. j. urol;45(5):1022-1032, Sept.-Dec. 2019. tab, graf.
Idioma: en.
Resumo: ABSTRACT Purpose This hybrid retrospective and prospective study performed on 200 consecutive patients undergoing renal CTA, investigates the opacification of renal vasculature, radiation dose, and reader confidence. Materials and Methods 100 patients were assigned retrospectively to protocol A and the other 100 were allocated prospectively to protocol B. Both protocols implemented a contrast material and saline flow rate of 4.5 mL/sec. Protocol A utilized a 100 mL of low-osmolar nonionic IV contrast material (Ioversol 350 mg I/mL) while protocol B employed a patient-tailored contrast media formula using iso-osmolar non-ionic (Iodixanol 320 mg I/mL). Results Arterial opacification in the abdominal aorta and in the bilateral main proximal renal arteries demonstrated no statistical significance (p>0.05). Only the main distal renal artery of the left kidney in protocol B was statistically significant (p<0.046). In the venous circulation, the IVC demonstrated a significant reduction in opacification in protocol B (59.39 HU ± 19.39) compared to A (87.74 HU ± 34.06) (p<0.001). Mean CNR for protocol A (22.68 HU ± 13.72) was significantly higher than that of protocol B (14.75 HU ± 5.76 p< 0.0001). Effective dose was significantly reduced in protocol B (2.46 ± 0.74 mSv) compared to A (3.07 ± 0.68 mSv) (p<0.001). Mean contrast media volume was reduced in protocol B (44.56 ± 14.32 mL) with lower iodine concentration. ROC analysis demonstrated significantly higher area under the ROC curve for protocol B (p< 0.0001), with inter-reader agreement increasing from moderate to excellent in renal arterial visualization. Conclusion Employing a patient-tailored contrast media injection protocol shows a significant refinement in the visualization of renal vasculature and reader confidence during renal CTA.
Descritores: Artéria Renal/diagnóstico por imagem
Meios de Contraste/administração & dosagem
Angiografia por Tomografia Computadorizada/métodos
Rim/irrigação sanguínea
Rim/diagnóstico por imagem
-Doses de Radiação
Valores de Referência
Veias Renais/diagnóstico por imagem
Ácidos Tri-Iodobenzoicos/administração & dosagem
Modelos Logísticos
Estudos Prospectivos
Reprodutibilidade dos Testes
Estudos Retrospectivos
Curva ROC
Angiografia por Tomografia Computadorizada/normas
Pessoa de Meia-Idade
Limites: Humanos
Masculino
Feminino
Adulto
Idoso
Responsável: BR1.1 - BIREME


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Id: biblio-1089586
Autor: Jin, Li; Xie, Feng.
Título: Untargeted contrast-enhanced ultrasound versus contrast-enhanced computed tomography: a differential diagnostic performance (DDP) study for kidney lesions
Fonte: Clinics;75:e1489, 2020. tab, graf.
Idioma: en.
Resumo: OBJECTIVES: Histopathology is the 'gold standard' for diagnosing renal cell carcinoma but is limited by sample size. Contrast-enhanced ultrasound can differentiate malignant and benign lesions, but the Chinese guidelines on the management of renal cell carcinoma do not include this method. The purpose of this study was to compare the diagnostic parameters of contrast-enhanced ultrasound against those of contrast-enhanced computed tomography for detecting kidney lesions, with histopathology considered the reference standard. METHODS: Patients with suspected kidney lesions from prior grayscale ultrasonography and computed tomography were included in the analysis (n=191). The contrast-enhanced ultrasound, contrast-enhanced computed tomography, and histopathology data were collected and analyzed. A solid, enhanced mass was considered a malignant lesion, and an unenhanced mass or cyst was considered a benign lesion. The Bosniak criteria were used to characterize the lesions. RESULTS: Contrast-enhanced ultrasound and contrast-enhanced computed tomography both detected that 151 patients had malignant tumors and 40 patients had benign tumors. No significant differences in the tumors and their subtypes were reported between contrast-enhanced ultrasound and histopathology (p=0.804). Chromophobe renal cell carcinoma was detected through contrast-enhanced computed tomography (n=1), but no such finding was reported by contrast-enhanced ultrasound. A total of 35 cases of papillary renal cell carcinoma were reported through contrast-enhanced ultrasound while 32 were reported through histopathology. CONCLUSIONS: Contrast-enhanced ultrasound might be safe and as accurate as histopathology in diagnosing kidney lesions, especially renal cell carcinoma. Additionally, this study provides additional information over histopathology and has an excellent safety profile. Level of evidence: III.
Descritores: Carcinoma de Células Renais/diagnóstico por imagem
Tomografia Computadorizada por Raios X/métodos
Ultrassonografia/métodos
Meios de Contraste/farmacologia
Cistos/diagnóstico por imagem
Neoplasias Renais/diagnóstico por imagem
-Carcinoma de Células Renais/metabolismo
Sensibilidade e Especificidade
Neoplasias Renais/metabolismo
Limites: Humanos
Masculino
Feminino
Tipo de Publ: Estudo Comparativo
Responsável: BR1.1 - BIREME


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Id: biblio-1056355
Autor: Li, Qiuyang; Wang, Zhongxin; Ma, Xin; Tang, Jie; Luo, Yukun.
Título: Diagnostic accuracy of contrast-enhanced ultrasound for detecting bland thrombus from inferior vena cava tumor thrombus in patients with renal cell carcinoma
Fonte: Int. braz. j. urol;46(1):92-100, Jan.-Feb. 2020. tab, graf.
Idioma: en.
Projeto: National Natural Science Foundation of China.
Resumo: ABSTRACT Purpose: To evaluate the role of contrast-enhanced ultrasound (CEUS) in differentiating bland thrombus from tumor thrombus of the inferior vena cava (IVC) in patients with renal cell carcinoma (RCC). Materials and Methods: We retrospectively investigated 30 consecutive patients who underwent robot-assisted radical nephrectomy with IVC thrombectomy and had pathologically confirmed RCC. All patients underwent US and CEUS examination. Two off-line readers observed and recorded thrombus imaging information and enhancement patterns. Sensitivity, specificity, accuracy, positive predictive value and negative predictive value for bland thrombus were assessed. Results: Of the 30 patients, no adverse events occurred during administration of the contrast agent. Early enhancement of the mass within the IVC lumen on CEUS was an indicator of tumor thrombus. Bland thrombus showed no intraluminal flow on CEUS. There were eight (26.7%) patients with bland thrombus, including three level II, two level III, and three level IV. There were three cases with cephalic bland thrombus and five cases with caudal bland thrombus. Three caudal bland thrombi extended to the iliac vein and underwent surgical IVC interruption. Based on no intraluminal flow, for bland thrombus, CEUS had 87.5% sensitivity, 100% specificity, 96.7% accuracy, 100% positive predictive value and 95.6% negative predictive value. Conclusion: Our study demonstrates the potential of CEUS in the differentiation of bland and tumor thrombus of the IVC in patients with RCC. Since CEUS is an effective, inexpensive, and non-invasive method, it could be a reliable tool in the evaluation of IVC thrombus in patients with RCC.
Descritores: Veia Cava Inferior/diagnóstico por imagem
Carcinoma de Células Renais/diagnóstico por imagem
Ultrassonografia Doppler/métodos
Trombose Venosa
Neoplasias Renais/diagnóstico por imagem
-Veia Cava Inferior/cirurgia
Veia Cava Inferior/patologia
Imageamento por Ressonância Magnética
Carcinoma de Células Renais/cirurgia
Carcinoma de Células Renais/patologia
Reprodutibilidade dos Testes
Estudos Retrospectivos
Trombectomia/métodos
Meios de Contraste
Trombose Venosa/cirurgia
Trombose Venosa/patologia
Carga Tumoral
Gradação de Tumores
Neoplasias Renais/cirurgia
Neoplasias Renais/patologia
Pessoa de Meia-Idade
Limites: Humanos
Masculino
Feminino
Adulto
Responsável: BR1.1 - BIREME


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Id: biblio-1093013
Autor: Tirado Castro, Maickol Jhoel; Cataño Vargas, Liliana Rocío; Prieto Alvarado, Franklyn Edwin.
Título: Factores asociados a la nefropatía inducida por contraste en pacientes hospitalizados a quienes se les realizó tomografia axial computarizada / Factors associated with contrast-induced nephropathy in hospitalized patients who underwent computed tomography
Fonte: Rev. colomb. nefrol. (En línea);5(2):118-126, jul.-dic. 2018. tab, graf.
Idioma: es.
Resumo: Resumen Introducción: la nefropatía inducida por medio de contraste es la tercera causa de insuficiencia renal aguda en pacientes hospitalizados. En múltiples estudios se ha observado que un factor importante para su desarrollo es el uso de medio de contraste vía intra-arterial y en las angiografías en general. Nuestro objetivo es identificar los factores asociados a nefropatía inducida por contraste en pacientes hospitalizados, a quienes se les realizó tomografia axial computarizada con medio de contraste yodado en una institución de salud de alta complejidad de Neiva, Colombia, durante el 2016. Materiales y métodos: se desarrolló un estudio de casos y controles no pareado con 108 pacientes, 36 casos y 72 controles hospitalizados llevados a tomografia axial computarizada diagnóstica o terapéutica con medio de contraste radiológico yodado. Resultados: los factores asociados con nefropatía inducida por medio de contraste encontrados en los pacientes hospitalizados llevados a TAC contrastada fueron, el sexo (hombre) (OR=3,22; IC=95 % 1,33 - 7,76; p=0,009), y el servicio de procedencia (hospitalización en sala general) (OR=0,26; IC=95 % 0,07 - 1,00; p=0,051).

Abstract Introduction: Contrast-induced Nephropathy is the third most common cause of acute renal failure in patients. It has been observed in several studies that an important factor is the usage of a contrast given via IV and the angiograms. Our goal is to identify the factors associated to a Contrast-induced Nephropathy in patients who had a computarized axial tomography through an iodine contrast in a health institution of high complexity in Neiva, Colombia during 2016. Material and methods: A cased study and no-matched tests were applied in 108 patients (36 cases and 76 tests), who had a computarized axial dianostic or therapeutic tomography through an iodine radiological contrast. Results: The factors associated to contrast-induced Nephropathy, through a contrast dye, found in patients who had a CAT were the gender (male) (OR=3, 22; CI=95 % 1, 33 - 7,76; p=0,009) and the place where the procedure was made (hospitalization in general wards) (OR=0,26; CI=95 % 0,07 - 1,00; p=0,051).
Descritores: Tomografia
Hospitalização
Nefropatias
-Fatores de Risco
Colômbia
Meios de Contraste
Insuficiência Renal
Limites: Humanos
Masculino
Feminino
Responsável: CO661.9


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Id: biblio-1153953
Autor: Zhou, Yan-Lin; Chen, Li-Qun; Du, Xiao-Gang.
Título: Efficacy of short-term moderate or high-dose statin therapy for the prevention of contrast-induced nephropathy in high-risk patients with chronic kidney disease: systematic review and meta-analysis
Fonte: Clinics;76:e1876, 2021. tab, graf.
Idioma: en.
Projeto: National Natural Science Foundation of China; . Natural Science Foundation of Chongqing Science, the Technology Commission of China; . Chongqing Municipal Health Bureau of China.
Resumo: Although previous studies have indicated that statin therapy can effectively prevent the development of CIN, this observation remains controversial, especially in high-risk patients. A meta-analysis was performed to evaluate the efficacy of statin pretreatment for preventing the development of CIN in patients with chronic kidney disease (CKD) and to determine its effectiveness in various subgroups. We searched the online databases PubMed, EMBASE, and the Cochrane Library. RCTs that involved the comparison of the short-term moderate or high-dose statin pretreatment with placebo for CIN prevention in CKD patients undergoing angiography were included. The primary outcome was CIN prevalence. Seven RCTs comprising 4256 participants were investigated in this analysis. The risk of developing CIN in patients pretreated with statins was significantly lower than that in patients pretreated with placebo (RR=0.57, 95%CI=0.43-0.76, p=0.000). The SCr values of the statin group, when analyzed 48h after angiography were lower than those of the placebo group ((SMD=-0.15, 95% CI=-0.27 to -0.04, p=0.011). In the subgroup analysis, statin pretreatment could decrease the risk of CIN in CKD patients with DM (RR=0.54, 95% CI=0.39-0.76, p=0.000), but not in CKD patients without DM (RR=0.84, 95% CI=0.44-1.60, p=0.606). The efficacy of atorvastatin for preventing CIN was consistent with that observed with the use of rosuvastatin. The risk ratios (RR) were 0.51 (95% CI=0.32-0.81, p=0.004) and 0.60 (95% CI=0.41-0.88, p=0.009), respectively. Our study demonstrated that statin pretreatment could prevent the development of CIN in CKD patients. However, subgroup analysis demonstrated that statin pretreatment, despite being effective in preventing CIN in patients with CKD and DM, was not helpful for CKD patients without DM. Rosuvastatin and atorvastatin exhibited similar preventive effects with respect to CIN.
Descritores: Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico
Insuficiência Renal Crônica/complicações
-Angiografia Coronária
Meios de Contraste/efeitos adversos
Rosuvastatina Cálcica/uso terapêutico
Limites: Humanos
Tipo de Publ: Research Support, Non-U.S. Gov't
Metanálise
Revisão Sistemática
Responsável: BR1.1 - BIREME


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Id: biblio-977467
Autor: Gül, Ilker; Cerit, Levent; Senturk, Bihter; Zungur, Mustafa; Alkan, Mustafa Beyazıt; Kemal, Hatice; Cerit, Zeynep; Yaman, Belma; Usalp, Songul; Duygu, Hamza.
Título: The negative effect of mean perfusion pressure on the development of acute kidney injury after transcatheter aortic valve implantation
Fonte: Rev. bras. cir. cardiovasc = Braz. j. cardiovasc. surg. (impr.);33(6):559-566, Nov.-Dec. 2018. tab, graf.
Idioma: en.
Resumo: Abstract Objective: To evaluate the predictive value of mean perfusion pressure (mPP) in the development of acute kidney injury (AKIN) after transcatheter aortic valve implantation (TAVI). Methods: One hundred and forty seven consecutive patients with aortic stenosis (AS) were evaluated for this study and 133 of them were included. Mean arterial pressure (mAP) and central venous pressure (CVP) were used to calculate mPP before TAVI procedure (mPP = mAP-CVP). The occurrence of AKIN was evaluated with AKIN classification according to the Valve Academic Research Consortium-2 recommendations. The patients were divided into two groups according to the receiver operating characteristic (ROC) analysis of their mPP levels (high-risk group and low-risk group). Results: The AKIN prevalence was 22.6% in this study population. Baseline serum creatinine level, glomerular filtration rate, amount of contrast medium, and the level of mPP were determined as predictive factors for the development of AKIN. Conclusion: The occurrence of AKIN is associated with increased morbidity and mortality rates in patients with TAVI. In addition to the amount of contrast medium and basal kidney functions, our study showed that lower mPP was strongly associated with development of AKIN after TAVI.
Descritores: Valva Aórtica/cirurgia
Estenose da Valva Aórtica/cirurgia
Complicações Pós-Operatórias/etiologia
Pressão Sanguínea
Próteses Valvulares Cardíacas
Injúria Renal Aguda/etiologia
Substituição da Valva Aórtica Transcateter/efeitos adversos
-Complicações Pós-Operatórias/mortalidade
Taxa de Sobrevida
Fatores de Risco
Curva ROC
Meios de Contraste
Implante de Prótese de Valva Cardíaca/efeitos adversos
Implante de Prótese de Valva Cardíaca/métodos
Chipre/epidemiologia
Injúria Renal Aguda/mortalidade
Substituição da Valva Aórtica Transcateter/métodos
Limites: Humanos
Masculino
Feminino
Idoso
Responsável: BR1.1 - BIREME


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Id: biblio-976779
Autor: Chagas, Carlos; Pires, Lucas; Leite, Tulio; Babinski, Marcio.
Título: The artery of Mouchet: blood supply of the septomarginal trabecula in 50 human hearts
Fonte: Rev. Assoc. Med. Bras. (1992);64(10):916-921, Oct. 2018. tab, graf.
Idioma: en.
Resumo: SUMMARY The septomarginal trabecula is a muscular structure which transmits the right branch of the atrioventricular bundle. It is usually supplied by a branch from the second anterior septal artery. Anastomoses between the right and left coronary arteries may happen on the septomarginal trabecula. They are of great significance in order to prevent ischemia during a myocardial infarction. Surgeries such as Konno's and Ross' procedures implies in knowledge of these vessels anatomy. The coronary arteries of 50 human hearts were injected with latex and subsequentely dissected with the purpose of identifying the arterial branch that supplied the septomarginal trabecula. The trabecular branch arose from the second anterior septal artery in 38% of cases, and the branch arose from the first anterior septal artery in 26%. One of the hearts had its septomarginal trabecula supplied by the conus arteriosus arteryliterature. Anastomoses between the right and left coronary arteries were found inside the septomarginal trabecula. The right branch of the atrioventricular bundle is subject to a great number of clinical conditions and is often manipulated during surgery, thus, the study of the septal branches of the coronary arteries and the trabecular branch is essential.

RESUMO A trabécula septomarginal é uma estrutura muscular que transmite o ramo direito do feixe atrioventricular. É usualmente suprida por um ramo da segunda artéria septal anterior. Anastomoses entre as artérias coronárias direita e esquerda podem ocorrer na trabécula. São de grande significância especialmente na prevenção de isquemia durante um infarto do miocárdio. Procedimentos cirúrgicos como o de Konno's e Ross implicam conhecimento anatômico desses vasos. As artérias coronárias de 50 corações humanos foram injetadas com látex e dissecadas com o propósito de identificar o ramo arterial que supria a trabécula septomarginal. Em somente 38% dos casos o ramo foi proveniente da segunda artéria septal anterior, enquanto que em 26% dos casos a artéria se originou da primeira septal anterior. Um dos corações teve a trabécula septomarginal suprida por um ramo originário da artéria do cone arterioso. Além disso, foram encontradas anastomoses entre as artérias coronárias no interior da trabécula septomarginal. Em suma, o ramo direito do feixe atrioventricular está sujeito a inúmeras condições clínicas e é alvo de manuseio em cirurgias, logo, o estudo dos ramos septais das artérias coronárias, em especial o ramo trabecular é essencial.
Descritores: Circulação Coronária
Vasos Coronários/anatomia & histologia
Ventrículos do Coração/anatomia & histologia
-Função Ventricular
Meios de Contraste
Sistema de Condução Cardíaco
Septos Cardíacos/anatomia & histologia
Limites: Humanos
Responsável: BR1.1 - BIREME



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