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2.
Eur. j. anat ; 21(2): 149-155, abr. 2017. ilus, tab, graf
Artigo em Inglês | IBECS | ID: ibc-163140

RESUMO

A bilateral intersegmental trunk is formed when a pair of left and right thoracic or lumbar intersegmental arteries share a common aortic origin. This rare variant - most frequently found at the low lumbar level - is exceptional in the thoracic region. We describe five angiographic observations of multiple thoracic bilateral intersegmental trunks (average 4.6 per patient, range 2 to 8, with a predominance between T6 and T8). The angiographic, comparative and developmental anatomy of thoracic BITs is discussed, as well as their clinical importance for angiographers and surgeons performing procedures that involve the thoracic aorta or the vertebral columna


No disponible


Assuntos
Humanos , Tronco Arterial/anatomia & histologia , Tórax/irrigação sanguínea , Aorta Torácica/anatomia & histologia , Variação Anatômica , Coluna Vertebral/irrigação sanguínea , Angiografia
4.
Eur. j. anat ; 18(3): 191-193, jul. 2014. ilus
Artigo em Inglês | IBECS | ID: ibc-125139

RESUMO

A less common type of celiacomesenteric arterial trunk was noticed during a routine cadaver dissection in a 30-year-old male cadaver. The left gastric artery gave an additional accessory left hepatic branch to the liver, while the common hepatic branch gave rise to right and left hepatic arteries. Additionally, the superior mesenteric artery gave an accessory right hepatic branch, to the liver. Such arterial variations are of clinical and surgical significance, particularly in liver surgery


No disponible


Assuntos
Humanos , Masculino , Adulto , Tronco Arterial/anatomia & histologia , Artéria Celíaca/anatomia & histologia , Artérias Mesentéricas/anatomia & histologia , Artéria Hepática/anatomia & histologia , Variação Anatômica , Artéria Mesentérica Superior/anatomia & histologia , Cadáver , Dissecação/métodos , Procedimentos Cirúrgicos do Sistema Biliar/métodos
8.
Rev. esp. cardiol. (Ed. impr.) ; 61(2): 137-145, feb. 2008. ilus, tab
Artigo em Es | IBECS | ID: ibc-65985

RESUMO

Introducción y objetivos. El diagnóstico precoz de la obstrucción del tronco coronario izquierdo es crucial. Analizamos el valor del análisis vectorial del segmento ST y el QRS en la obstrucción del tronco izquierdo en el síndrome coronario agudo. Métodos. Estudiamos criterios vectoriales válidos en 57 pacientes consecutivos con electrocardiogramas compatibles con obstrucción del tronco izquierdo. Resultados. La coronariografía mostró obstrucción del tronco coronario izquierdo en 20 pacientes, circunfleja en 19, coronaria derecha en 10, triple vaso en 5 y descendente anterior en 3. El vector del ST dirigido entre ­90° y 180° en el plano frontal se observó en el 100% de los pacientes con afección del tronco coronario izquierdo (p < 0,001) con un 78% de especificidad. El vector del ST anterior o paralelo en el plano horizontal se observó en el 95% (19/20) de los pacientes con afección del tronco izquierdo (p < 0,001) con un 92% de especificidad. El vector del QRS con desviación a la izquierda é ­30° se observó en el 75% (15/20) de los pacientes con afección del tronco izquierdo (p < 0,001) con un 95% de especificidad. Un vector ST entre ­90° y 180° y anterior mostró un 95% de sensibilidad y un 100% de especificidad para la obstrucción del tronco izquierdo. Un vector ST entre ­90 y 180° con un QRS con desviación a la izquierda é ­30° mostró un 75% de sensibilidad y un 100% de especificidad de obstrucción del tronco izquierdo. Un sencillo algoritmo predice la obstrucción del tronco coronario izquierdo en el 100% de los pacientes. Conclusiones. En el síndrome coronario agudo, el análisis vectorial del segmento ST y el QRS predice la obstrucción del tronco coronario izquierdo (AU)


Introduction and objectives. It is vital that obstruction of the left main coronary artery (LMCA) is diagnosed early. We investigated the value of ST-segment and QRS-complex vector analysis in identifying LMCA obstruction in acute coronary syndrome. Methods. The study involved 57 consecutive patients with electrocardiographic features suggestive of LMCA obstruction. Both ST-segment and QRS-complex parameter vectors were analyzed. Results. Coronary angiography showed that the obstructed vessel was the LMCA in 20 patients, the left circumflex artery in 19, the right coronary artery in 10, and the left anterior descending artery in three. Five patients had three-vessel disease. An ST vector that was directed between ­90° and 180° in the frontal plane was observed in 100% of patients with an LMCA obstruction (P<.001). The specificity of this observation was 78%. An ST vector directed anteriorly or parallel to the horizontal plane was present in 95% of patients (19/20) with an LMCA obstruction (P<.001; specificity 92%). A QRS vector with a left shift é­30° was observed in 75% (15/20) with LMCA disease (P<.001; specificity 95%). An ST vector directed between ­90° and 180° and anteriorly had a sensitivity of 95% and specificity of 100% for LMCA obstruction. An ST vector directed between ­90° and 180° combined with a left QRS vector shift ≥­30° had a sensitivity of 75% and a specificity of 100% for LMCA obstruction. A simple algorithm combining these observation was able to predict LMCA obstruction in 100% of patients. Conclusions. In acute coronary syndrome, ST-segment and QRS-complex vector analysis can predict the presence of LMCA obstruction (AU)


Assuntos
Humanos , Estenose Coronária/diagnóstico , Eletrocardiografia/métodos , Doença das Coronárias/diagnóstico , Tronco Arterial/fisiopatologia , Diagnóstico Precoce , Doença das Coronárias/fisiopatologia , Bloqueio Cardíaco/fisiopatologia , Angiografia Coronária , Eletrocardiografia
10.
Rev. esp. cardiol. (Ed. impr.) ; 60(8): 811-816, ago. 2007. tab
Artigo em Es | IBECS | ID: ibc-058075

RESUMO

Introducción y objetivos. La angiografía presenta limitaciones importantes para definir la severidad de las lesiones intermedias del tronco común. La ecografía endovascular (EEV) permite realizar una evaluación precisa, pero no hay consenso respecto a los valores de área luminal mínima (ALM) que indican significación. El objetivo de este estudio es evaluar la seguridad a largo plazo de la aplicación de un valor de corte de 6 mm2 para el ALM en el tronco. Métodos. Se ha incluido a pacientes con lesiones intermedias (25-50%) de tronco no protegido, sin datos previos indicativos de isquemia atribuible. Se realizó estudio con EEV y se indicó revascularización en los pacientes con ALM ≤ 6 mm2. Resultados. En el período 2000-2005 se ha incluido a 79 pacientes, en 31 (39%) el ALM fue ≤ 6 mm2 y recibieron revascularización del tronco, en los restantes 48 (61%) el ALM fue > 6 mm2 y sólo se actuó sobre otras lesiones (n = 37) o continuaron con tratamiento médico (n = 11). En un seguimiento de 40 ± 17 meses se han producido 4 muertes cardiacas (8,3%), que ocurrieron en casos con un ALM de 9-10 mm2 en el estudio basal. Sólo en 2 casos (4,2%) fue preciso efectuar procedimientos de revascularización del tronco que consistieron en cirugías electivas tras más de 2 años del estudio inicial. Conclusiones. La evaluación con EEV de las lesiones intermedias de tronco y la consideración de un valor de corte de 6 mm2 para el ALM resulta segura a largo plazo, siempre que se consideren unos criterios clinicoangiográficos de aplicabilidad como los considerados en este estudio (AU)


Background and objectives. Angiographic assessment of the severity of intermediate lesions in the left main coronary artery (LMCA) is subject to significant limitations. Intravascular ultrasound (IVUS) can provide accurate measurement, but there is no agreement on the minimum lumen cross-sectional area (MLA) that indicates significant disease. The aim of this study was to determine the long-term safety of applying a cut-off value of 6 mm2 for the MLA in the LMCA. Methods. The study included patients with intermediate lesions (i.e., 25­50%) in unprotected LMCAs, with no previous evidence of associated ischemia. An IVUS examination was carried out and revascularization was indicated when the MLA was ≤6 mm2. Results. In total, 79 patients were recruited between 2000­2005. In 31 (39%), the MLA was ≤6 mm2, and they underwent LMCA revascularization; in the remaining 48 (61%), the MLA was >6 mm2, and patients either underwent angioplasty for other lesions (n=37) or continued medical treatment (n=11). In a follow-up period of 40 [17] months, four patients (8.3%) died from heart disease, all of whom had an MLA between 9­10 mm2 in the baseline study. Revascularization of the LMCA was necessary in only two patients (4.2%), both of whom had elective surgery more than 2 years after the initial study. Conclusions. Intravascular ultrasound assessment of intermediate LMCA lesions using an MLA cut-off value of 6 mm2 appears safe over the long term provided the clinical and angiographic criteria applied to patient selection are similar to those used in this study (AU)


Assuntos
Humanos , Ultrassonografia de Intervenção/métodos , Angiografia Coronária/métodos , Isquemia Miocárdica , Doença das Coronárias , Estudos Prospectivos , Tronco Arterial , Revascularização Miocárdica
11.
Rev. esp. cardiol. (Ed. impr.) ; 58(12): 1479-1481, dic. 2005. ilus
Artigo em Es | IBECS | ID: ibc-041956

RESUMO

La obesidad es un factor de riesgo para el desarrollo de complicaciones posquirúrgicas e incrementa de forma significativa la tasa de mortalidad intrahospitalaria. Presentamos el caso de una mujer de 65 años con obesidad mórbida, estenosis aórtica severa y enfermedad de tronco que se trató con éxito mediante valvuloplastia aórtica y angioplastia e implantación de stent en tronco coronario izquierdo. Tras una intervención quirúrgica bariátrica y perder el 30% de su peso, la paciente fue aceptada en cirugía cardíaca y se le realizó recambio valvular aórtico y bypass de mamaria a la descendente anterior (DA) sin complicaciones


Obesity increases significantly the rate of postsurgical complications and mortality in patients undergoing major surgery. We present the case of a morbidly obese 65-year-old female with severe aortic stenosis and left main coronary artery disease who underwent successful aortic valvuloplasty and angioplasty, with placement of a stent in the left main coronary artery. After undergoing bariatric surgery and losing 30% of her body weight, the patient was accepted for cardiac surgery to replace the aortic valve and to bypass the left anterior descending coronary artery using the mammary artery. There were no surgical complications


Assuntos
Feminino , Idoso , Humanos , Estenose da Valva Aórtica/cirurgia , Obesidade Mórbida/complicações , Tronco Arterial/lesões , Angioplastia Coronária com Balão , Resultado do Tratamento , Índice de Gravidade de Doença
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