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经皮穿刺血管腔肾血管成形术简称PTRA,它是在皮穿刺血竹腔成形术(PTA)的基础上发展而来的。肾动脉狭窄不一定导致高血压,应基于肾素测定的标准来评价肾动脉狭窄的功能意义和它治愈的可能性。肾动脉狭窄的病因可分为动脉粥样硬化和非动脉粥样硬化两类,后者又可分成纤维肌生长不良、动脉炎和手术后狭窄三种,根据狭窄部位又可分为口部病变和非口部病变,以及单侧性和双侧性受犯。PTA 使动脉粥样硬化所致狭窄的管腔扩张,是由于粥样硬化斑的分裂和动脉中,内膜层的断裂。非动脉粥样硬化性肾动脉狭窄主要为病变中的纤维组织所致,所以PTA 治疗这类狭窄,亦是由于狭窄管腔内胶囊的压力,使纤维组织断裂而达到动脉扩张的目的。
PTRA, referred to as PTRA for percutaneous transluminal angioplasty (PAG), developed on the basis of percutaneous transluminal blood vessel angioplasty (PTA). Renal artery stenosis does not necessarily lead to hypertension, and the functional significance of renal artery stenosis and the likelihood of its cure should be evaluated on the basis of renin assay. The causes of renal artery stenosis can be divided into two categories of atherosclerosis and non-atherosclerosis, the latter can be divided into poor growth of fibrous muscle, arteritis and postoperative stenosis, according to the stenosis can be divided into oral lesions And non-oral lesions, as well as unilateral and bilateral offenses. PTA to atherosclerosis caused by the narrow lumen expansion is due to atherosclerotic plaque division and arterial, endometrial rupture. Non-atherosclerotic renal artery stenosis is mainly caused by the fibrous tissue in the lesion, so PTA treatment of such stenosis is also due to the pressure of the capsule in the stenotic lumen, so that the fibrous tissue is broken to achieve the purpose of arterial dilatation.