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18 de may. de 2023 · Citation, DOI, disclosures and article data. Renal artery stenosis (RAS) (plural: stenoses) refers to a narrowing of a renal artery. When the process occurs slowly, it leads to secondary hypertension. Acute renal artery stenosis does not lead to hypersecretion of renin.
25 de abr. de 2024 · When there is an obstruction in the portal vein or hepatic veins, portosystemic collateral pathways open to allow the drainage of excessive portal system blood into the systemic venous system 4. Relations. anterior. neck and body of the pancreas. D1 segment of duodenum. anterolateral. common bile duct. anteromedial. common hepatic artery. posterior
26 de abr. de 2023 · A stroke is a clinical diagnosis that refers to a sudden onset focal neurological deficit of presumed vascular origin.. Stroke is generally divided into two broad categories 1,2:. ischemic stroke (87%); hemorrhagic stroke (13%); Terminology. The term "stroke" is ambiguous and care must be taken to ensure that precise terminology is used.
16 de oct. de 2022 · Vertebral artery dissections can be divided into two groups: extracranial dissection (with or without intracranial extension) intracranial dissection. CTA, MRI, and catheter angiography can all be used to detect vertebral artery dissection, and each has pros and cons. Unfortunately, the vertebral arteries cannot always be satisfactorily imaged ...
Hace 3 días · With acute superior vena cava obstruction, symptoms include facial and neck swelling, facial flushing, bilateral upper extremity swelling, neurological signs, dyspnea, headache, and cough. The Pemberton maneuver 8 might be a useful physical examination tool. The maneuver is achieved by having the patient elevate both arms until they touch the ...
22 de dic. de 2022 · An understanding of brain arterial vascular territories is important in understanding stroke and complications from surgery and endovascular procedures. Although one could be excused for thinking that within the brain, such a carefully organized organ, blood supply would be constant, the truth is that a great deal of variety exists.
18 de ago. de 2021 · extensive collateral vessels. 3D imaging may help in visualization of collateral pathways; MRI. Helps in visualizing mesenteric vessel stenosis. The inferior mesenteric artery may be poorly visualized, depending on the sequence. Angiography (DSA) Catheter angiography is the gold standard for diagnosing mesenteric vascular disease.
