RESUMO
A 6-year-old boy from China presented initially at 2 years of age with a pulsatile mass in his right antecubital fossa. He was not fully evaluated until the age of six years, when pan-angiography and computed axial tomography scan revealed multiple aneurysms of his right brachial artery, right radial artery aneurysms, an infrarenal aortic aneurysm, and a right internal carotid artery aneurysm in the region of the cavernous sinus. The patient underwent uneventful repairs of both the abdominal aortic aneurysm and the multiple aneurysms of the right arm. Pathologic evaluation was significant for medial fibrosis of the arterial wall with decreased and disordered elastin fibers. Review of the previously reported cases in children indicate the upper extremity arteries are involved in 92% of patients, the aortoiliac region in 92% of patients, and the renal/mesenteric vessels in 77% of cases. Lower extremity and cerebrovascular arteries are involved to a lesser extent. Children with peripheral aneurysms should have pan-angiography performed before treatment is begun. Surgical repair in these cases has been excellent.
Assuntos
Aneurisma/cirurgia , Aneurisma da Aorta Abdominal/cirurgia , Artéria Braquial/cirurgia , Doenças das Artérias Carótidas/cirurgia , Artéria Radial/cirurgia , Aneurisma/diagnóstico por imagem , Aneurisma/etnologia , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Aneurisma da Aorta Abdominal/etnologia , Prótese Vascular , Artéria Braquial/diagnóstico por imagem , Doenças das Artérias Carótidas/diagnóstico por imagem , Doenças das Artérias Carótidas/etnologia , Artéria Carótida Interna/diagnóstico por imagem , Artéria Carótida Interna/cirurgia , Criança , China/etnologia , Humanos , Masculino , Doenças Vasculares Periféricas/diagnóstico por imagem , Doenças Vasculares Periféricas/etnologia , Doenças Vasculares Periféricas/cirurgia , Politetrafluoretileno , Artéria Radial/diagnóstico por imagem , Tomografia Computadorizada por Raios XRESUMO
The incidence of chylopericardium after cardiac surgery is unusual, but there are documented cases. Those caring for these patients need to be aware of the symptoms and management of chylopericardium because, if left untreated, it may cause catastrophic consequences.
Assuntos
Estenose da Valva Aórtica/cirurgia , Quilotórax/etiologia , Ponte de Artéria Coronária/efeitos adversos , Doença das Coronárias/cirurgia , Próteses Valvulares Cardíacas/efeitos adversos , Derrame Pericárdico/etiologia , Idoso , Tubos Torácicos , Quilotórax/diagnóstico , Quilotórax/terapia , Ecocardiografia , Humanos , Masculino , Derrame Pericárdico/diagnóstico , Derrame Pericárdico/terapia , PericardiectomiaRESUMO
The liquid chromatographic detection of nitrosamines at the ppb (10(9)) and sub-ppb levels is still a difficult problem. A significant improvement was achieved when a nitrosamine eluted from the column was photolysed by a UV lamp, the charged nitrite species being detected amperometrically. N-Nitrosodimethylamine (NDMA) was selected as a model solute to test the applicability of the detection device. The calibration graphs were linear over a wide concentration range. Optimal detection depended on the nature of the buffer used and the UV spectrum of the nitrosamine to be detected. An interesting application of the detection of a high-molecular-weight nitrosamine is given as an example.
