摘要(Abstract)：

<正> An 63-year-old Chinese man had abruptly attacked a dull and choke cheatpain at midnight of January 26,1996 and e was admitted hospital due toconstanting pain no alleviation.The diagnose was Acute Inferior MyocardialInfarction confirmed by CG examination and serum C enzyme spectrumafterwards.An soon as admision in C.C.V,throbolyi agent urokinase 1.5million unit intravenous perfusion and and serious AMI medica therapy withpharmacologic agents nitrates,-adrenergic blockers,calcium antagonistswere used.The patient's chest pain was relieved after 2h and 30 minutesthat urokinase perfusion finished.The lost time from pain start to arrivalhospital and perfusion administration was 5 hours.The optimal ECG S-Tsegment descending amplitude >50%,accompaied with cheat pain detent.Seriesenzyme peak was ahead of time.All of those had proved that occludecoronary artery got patency.this patient discharged after 20 days.Thepatient was admitted again at 29.October 1996 and was informed to takecoronary artery engiography because he always felt palpitation,dyspnea andpresented dull chest pain still after the time of leave hospital.Thecoronary angiogram indicated that a length of 10mm long and a eccentric>95%stenosis had existed in middle segment of right coronary artery.Leftventriculogram observed cardianeuria at diaphrag and rear base.F was 61.3%Then a 4.0 mm angio-plasty balloon catheter followed 0.14 mm guidewiresuccessfully passed tenosis place and expansion twice effectively to bedone.atmospheric pressure was 4-6 and length of time was 10-20 seconds,Angiogram showed revascularization success and there was no residualtenosis.Stnt implantation of 15 mm Ang Dynamic was completed smoothlythen.Following 9 months,the patient become health and strong,quality oflife improved obviously.21,July,1997,the patient came to hospital to take ordinary coronaryartery angiography A stent v occlusion 100% found.Immediatelyngioplasty balloon expansion administered 5 times still v bloodreturn to normal completely.No stent implaced again.According to the investigation from American National PTCA Registry andsome European research center reports,re-occlusion occurring frequencyrange is 3 months to 6 months.Some patient even felt no cardiac sympto orjust a little distress.They advocate patient's coronary artery angiographyevery 6 months would be taken.Appearance of our case consider the problemof stent v occlusion occurred after 9 months warning that ordinarycoronary artery angiography taken after 6 months is necessary,sometimeballoon expansion residual stnsis or stent v occusion have to belone.

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