Treatment Stenosis of Renal Artery Using Endovascula Stent<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
范海伦 贺能树
天津医科大学是医院介入科,天津 300025
Hai-lun Fan, Neng-shu He
ToDepartment of Radiology, Tianjing medical university general hospital
ABSTRACT
Objective:To evaluate the clinical outcomes and short-term efficacy of stent revasularization as treatment for renal artery stenosis.
Methods:Percutaneous transluminal renal angioplasty with sten(PTRAS)was ferformed on 15 consecutive patients with severe renal artery stenosis. They subsequently underwent clinical observe for the effect of the procedure on blood pressure control.
Results: Angiographic success was obtained in all 15 patients after PTRAS.24 hours after the procedure, emains stenosis<10%.systolic and diastolic blood pressures decreased to normal in 12 patients.
Conclusions:Treatment stenosis of renal artery using endovascula stent could obtain better clinical outcomes.
Key words:Renal artery stenosis; Stent; Hypertension
肾动脉狭窄是继发性高血压的原因之一,如不及时治疗会进行性恶化(1)。由肾动脉狭窄引起的高血压单纯应用药物很难控制(2)。肾动脉狭窄可引起慢性肾脏供血不足并最终导致肾衰(3)。近年来,经皮肾动脉球囊成形术(PTRA)已成为治疗肾动脉狭窄的主要措施,但单纯PTRA效果常不满意,尤其是当病变位于肾动脉开口部或近端时效果更差(4),而行PTRA基础上的内支架置入则可获得较满意的疗效。我们总结了近期我院的15例肾动脉狭窄内支架置入后的近期结果,评价内支架治疗的疗效。
材料与方法
本组病例均在我院行数字减影血管造影。15例患者中男性7例,女性8例,年龄15-69岁,平均年龄33.1岁,均有严重高血压病史。未服降压药时,收缩压≥180mmg(1mmg=0.133kPa)、舒张压≥100mmg;正规降压药物治疗后,收缩压≥140mmg、舒张压≥90mmg。血管造影证实15例患者中共有18条肾动脉狭窄或闭塞。单侧狭窄11例,双侧狭窄3例,单侧闭塞1例。其中开口部狭窄12例。血管狭窄程度均大于90%。
患者均经股动脉入路,6F-7F导管鞘置入股动脉,5F肾动脉管行病变侧选择性肾动脉造影,后应用0.035英寸超滑导丝通过狭窄段,导管跟进通过狭窄段,退出超滑导丝换入0.038英寸超硬导丝,退出导管保留超硬导丝,经超硬导丝送入直径5-6mm,长度2-4cm球囊,压力8-12个大气压,扩张狭窄段2-3次,每次持续30-45秒,间隔60秒,使狭窄段尽量扩张。扩张后植入支架,选择Palmaz或Wall-stent球囊扩张式或自膨胀式支架,长度需覆盖病变全长,直径较正常对照肾动脉大10%。支架植入后残余狭窄<30%,且无任何手术相关并发症为手术成功,否则为手术失败。 |