Self-management of coronary heart disease in older patients after elective percutaneous transluminal coronary angioplasty

Objective To explore how older patients self-manage their coronary heart disease （CHD） aider undergoing elective percutaneous transluminal coronary angioplasty （PTCA）. Methods This mixed methods study used a sequential, explanatory design and recruited a convenience sample of patients （n = 93） approximately three months after elective PTCA. The study was conducted in two phases. Quantitative data collected in Phase 1 by means of a self-administered survey were subject to univariate and bivariate analysis. Phase 1 findings in- formed the purposive samplhag for Phase 2 where ten participants were selected from the original sample for an in-depth interview. Qualita- tive data were analysed using thematic analysis. This paper will primarily report the findings from a sub-group of older participants （n = 47） classified as 65 years of age or older. Results 78.7% （n = 37） of participants indicated that they would manage recurring angina symptoms by taking glyceryl trinitrate and 34% （n = 16） thought that resting would help. Regardless of the duration or severity of the symptoms 40.5% （n = 19） would call their general practitioner or an emergency ambulance for assistance during any recurrence of angina symptoms. Older participants weighed less （P = 0.02） and smoked less （P = 0.01） than their younger counterparts in the study. Age did not seem to affect PTCA patients＇ likelihood of altering dietary factors such as fruit, vegetable and saturated fat consumption （P = 0.237）. Conclusions The findings suggest that older people in the study were less likely to know how to correctly manage any recurring angina symptoms than their younger counterparts but they had fewer risk factors for CHD. Age was not a factor that influenced participants＇ likelihood to alter lifestyle factors.

Study of Traditional Chinese Medicine in Intervening Vascular Remodeling after Percutaneous Transluminal Coronary Angioplasty

Interventional therapy of coronary heart disease (CHD) includes percutaneous transluminal coronary angioplasty (PTCA), stent implantation etc. Owing to its revascularization without cardiac surgery, it has been the main effective method in treating CHD. But at the same time, there exists the problem of restenosis (RS). After PTCA, RS

Clinico-Angiographic Profile and Prevalence of Restenosis in Patients Undergoing Percutaneous Transluminal Coronary Angioplasty to Left Main Coronary Artery: An Observational Cohort Study

Background: Patients who underwent percutaneous coronary intervention in left main coronary artery (LMCA) requires special concern, being high risk and increasing patient population. The aim of this study was to assess the clinical profile, angiographic status, and prevalence of restenosis in patients who underwent percutaneous transluminal coronary angioplasty (PTCA) in LMCA. Materials and Methods: This observational cohort study included 17 patients who underwent PTCA in LMCA during one-year study period at tertiary care centers in Government Medical College, Kozhikode, India. Data including various risk factors, clinical and angiographic details, stent used, procedural complications and outcomes including rate of restenosis were analyzed. Results: A total of 17 patients (mean age 53.88 ± 9.80 years) with 76.47% of males were included in the study. Smoking and hypertension were the most common risk factors presented in 52.94% and 47.06% of patients respectively. Single vessel disease (SVD) of LMCA was the most common pattern observed in 47.10%;the rate of restenosis was observed in 11.76% patients. Revascularization was performed in one patient (5.88%) with coronary artery bypass graft and in one patient (5.88%) with PTCA using drug eluting stent (DES). The overall procedural success was 88.24% in this study. Survival rate was 100% at one-year follow-up period. Conclusion: Our study involved patients who underwent PTCA in LMCA, showed smoking as a most prevalent risk factor for coronary artery disease and SVD as a most common pattern, comparatively low rate of restenosis and 100% of survival rate at one-year follow-up period.

CLINICAL APPLICATIONS OF PERCUTANEOUS TRANSLUMINAL CORONARY ANGIOPLASTY

Percutoneous transiuminal coronary anginplesty(PTCA)was performed in33 patients of coronary heart diseases(male 30 cases,female 3 cases, meanage 54.2) with Gruentzig’s method.Of all the 33 patients,there were 26narrow parts in 20 cases of the single branch lesions,27 narrow parts in 11cases of the double branch lesions and 11 narrow parts in 2 cases of thethree branch lesions.In 48 branches with lesion vessels,there were 27branches of the left anterior descending coronary arteries (LAD),7 branchesof the left cicumflex coronary arteries(LCX)and 13 branches of the rightcoronaw arteries.The narrow degrees varied from 75% to 100%. The resultswere that,of 33 patients,48 branches of lesion vessels and 64 narrow parts,the successful rates of dilation were 96.9%,87.5%,85.9%,respectively.Ventricular fibrillation occurred in one case during the procedure,whichsoon recovered sinus rhythm through cardioversion.Symptoms of thesuccessful 32 patients were lmproved obviously or diappeared after PATC.Combining with the documents,we think that the successful rates are higherin type A lesion undergoing PTCA.When PTCA for the multiple branchlesions are performed,we ought to master the principle of dilating the mainlessinos in advence.The long-tube lesions were dilated by the long balloonfitting for these lesions.The causes of failure of PTCA in the severe narrowlesions are mainly the the guilding wires or the balloon catheters cann’t passthrough the lesion parts,in addition,the complication problems in PTCA arealso discussed.

Amiodarone-induced bronchiolitis obliterans organizing pneumonia in patient following percutaneous transluminal coronary angioplasty

Background: Many patients are affected by idiopathicbronchiolitis obliterans organizing pneumonia (BOOP). There are several known causes of BOOP, and several systemic disorders have BOOP as an associated primary pulmonary lesion. Numerous agents including cytotoxic and noncytotoxic drugs have the potential to cause pulmonary toxicity. Descriptions of amiodarone-related BOOP continue to be reported throughout the world. Case Report: We reported a patient with original clinical presentation who developed recurrent sustained ventricular tachycardia (SVT) despite the presence of implantable cardioverter-defibrillator (ICD), hypoxaemia and interstitial pneumonitis in both lung bases. After percutaneous transluminal coronary angioplasty, he developed bronchiolitis obliterans organizing pneumonia (BOOP). Conclusions: To our knowledge, such complications after percutaneous coronary procedure in patients with amiodarone therapy for arrhythmia prophylaxis, are not very frequent in literature.

RELATION BETWEEN ECG CHANGES DURING PERCUTANEOUS TRANSLUMINAL CORONARY ANGIOPLASTY AND IMPROVEMENT OF MYOCARDIAL VIABILITY

The purpose of this study was to demonstrate the relation between the transientchanges of electrocardiogram(ECG)on body surface during balloon dilating inpercutaneous transluminal coronary angioplasty(PTCA) and improvement of theresidual myocardial viability after PTCA,Eighteen patients with twenty-threecoronary arteries narrowing above 70% were underwent PTCA and myocardialviability was examined with 99mTc-MIB1 Singlephoton Emission ComputedTomography(SPECT)before and after the procedure.During the balloon dilating30-60s,the ECG with leads Ⅱ,Ⅲ.avF.V4 weve recorded.There were 15 caseswith ECG changes of T wave.ST-Seg-ment and QRS axis(65.2%,47 8% and26.1%.respectively),3 case without ECG chanse.More than 50% change of Twave altitude was scored as 1.ST segment shift(elevation≥lmm or depression≥0.5mm.10mm=lmv)as 2.QRS axis deviation≥15 as 3.Myocardial viabiliiy.was evaluated by SPECT with four-point of nine segments of the left ventricularwall.The integral value of ECG change dung PTCA was closely correlated withthe change value of SPECT(SPECT△)(r=0.74,p【0.01).The sensitivity of themethod was 80%;specificity 100%;the positive predictive value 100%;the negativepredictive value 50%;the accuracy 83.3%.This method was simple,useful and.excellent in evaluating myocardial viability.The rest myocardial viability afterPTCA was higher than it was before PTCA(21.2±3.8 vs 17.6±3.6point,P【0.01).The hibernating myocardial viability was improved post PTCA.

CHANGES AND SIGNIFICATION OF SERUM CPK BEFORE AND AFTER PERCUTANEOUS TRANSLUMINAL CORONARY ANGIOPLASTY IN PATIENTS WITH CORONARY HEART DISEASES

To study the damage effect of percutaneous transfuminalcoronary angioplasty(PTCA)on myocardium,wedetermined the serum CPK and CPK-MB level in 35 casesof patients with coronary henrt disease(CHD)beforePTCA and at 6th,12th,24th hour,2nd,3rd day afterPTCA.The results showed that after PTCA,the serumCPK and CPK-MB in 21 of 35 case of patients wised at12th hour.2nd day reached the peak level.But comparedwith others,it has no significant different(P】0.05).TheCPK and CPK-MB decreased to normal level at 3rd day.Itis suggested that PTCA has no significant damage effect onmyocardium.

COMPLEX PERCUTANEOUS TRANSLUMINAL CORONARY ANGIOPLASTY

Percutancous transluminal coronary angioplasty was pcrfonned in 70patients with high risk characteristics from Jan.1998 toDcc.1997 These factors include age】70(10patients),unstableangina(35patients),ejection fraction【40%(7 patients),multivesseldisease(50patients).There were 96 lesions(79 vessels)dilated,amongthem type Alesion 15,type B lesion 52,type C lesion 29.Autoperfusion balloon was used in 7 patients, coronary stcnl wasimplantcd in 50 paticnts.One patient undcrgoing directional coronaryathrectomy(DCA).The clinical success rate was 91.5% and lesionsuccess rate was 89.6%.Average predilation stenosis was 89.5+8.2%and average postdilation stenosis was 16.9+6.2%.Two patients diedfrom abrupt vessel closureno acule myocardial infarction andemergency coronary bypass operation.The considerations in selectionand management of these high risk patients were discussed. The resultsshowed that PTCA can be performed safely in the complex cases.

CASE REPORT:130 CASES OF PERCUTANEOUS TRANSLUMINAL CORONARY AGIOPLASTY

Objective:An analysis of 130 cases admitted（during December.1993--December,1997）is reported b.All the patients were treated withprcutnous Transluminal Coronary agioplty （PTCA）.In addition to it10 cases underwent a second PTCA because of rt.The totalnumber is 140 cases.Thi paper up the pathlolgic changs ratecharacterized by coronary lesion in type A,B,and C1 percentage ofvaodilation;rate of success in type A,B,and C1 and the rate ofrt.Method:Coronary arteriography was performed in most cases add then PTCAwas exercised on selective cases with 7-10 days interval according tothe t plan.Coronary arteriography and PTCA were done synchronouslyin the rest cases.Kissing bicatheter technique were employed in 3cases because of bifurcated lesion and PTCA with insertion of a stntinto the spaces of the coronary artery at a diagonal was applied to 1case.Results:Classification of coronary lesion:Type A 33 cases （23.67%）,B57 （40.71%）,and C 50 （35.71%）.Number of coronary artery:single 40 （2857%）,double 59 （42.14%）,triple 39 （27.85%）,main 2 （1.44%）.Vasodilation:LAD 116（74.35%）,LCX 22（14.1%）,RCA 16（10.25%）,Middle 2（1.2%）.Rate of success:A 33 （100%）,B 57 （94.8%）,C 50 （94%）.Total rate ofsuccess:95.8% Rate of failure:6 cases（4.2%）,of which B 3 and C 3respectively,and one of limited myocardial infarction,one of coronaryabnormality,and others of 99-100% t with one failure of balloonwire to the lesion.Rtsis:10 cases had angina ptori 2-6 monthsafter PTCA and a second PTCA revealed LAD rtnosis,rated 5.7%.Concluon:In this group t lesion （76.42%） was found in Type B andType C,while lesion in Type A was L （23.5%）.That’s why highsuccess existed in Type A （100%）,while Type B and C with complicatedlesion needed complicated performance and rated low in success （94-94.8%）Vdilation:LAD】LCX】RCA.The rate of success lies in the degree ofcomplicated lesion,balloon wire and selection of catheter.Theinsertion of a tnt into the coronary artery might be the best way totreat PTCA t.

EXCIMER LASER CORONARY ANGIOPLASTY ──A PRELIMINARY REPORT OF 11 CASES

We reported 11 cases of excimer laser coronary angioplasty (ELCA). All were males, the average age being 59.7 years. Five patients had sustained previous myocardial infarctions with post-infarction angina in 2 cases and 6 presented angina only. Coronary angiograms showed stenosis in LAD (N9), LCX(N6) and RCA (N6). According to the ACC/AHA classification, 6 were categorized as type B, and 5 type C. ELCA with adjunctive PTCA were performed in all 8 patients, 1. 3 mm (energy density 14. 5 mJ) and 1.6 mm (energy density 21.0 mJ) laser catheters with 20Hz pulse frequency were used There was one failure and in another ELCA was successful but death followed the procedure. The overall result was laser success 10 out of the 11 cases and procedure success 9.

Safety and efficacy of dalteparin in percutaneous coronary intervention in Chinese patients with non-ST-elevation acute coronary artery syndromes： comparison with unfractionated heparin

Objective To prospectively evaluate the safety and therapeutic efficacy ofdalteparin in patients with high risk non-ST- elevation acute coronary syndromes （ACS） during percutaneous coronary intervention （PCI）. Methods A total of 175 patients with high risk non-ST-elevation ACS were randomly assigned to 2 groups [dalteparin group and unfractionated heparin （UFH） group]. The patients in dalteparin group were given dalteparin at a dose of 5,000U subcutaneously soon after diagnosis and then an additional 60U/ kg intravenous bolus ofdalteparin before emergent PCI. Vascular access sheaths were removed immediately after PCI or coronary artery angiography; the patients in UFH group were given UFH intravenously at a dose of 25mg just before PCI and an additional 65mg bolus was administered if angiographic findings showed that the patients were suitable for percutaneous transluminal coronary angioplasty （PTCA）. Sheaths were removed at 4-6 hours after PCI; Results Eighty-three patients in dalteparin group underwent PCI while 82 patients in UFH group underwent PCI; anti-Xa activities of 52 patients in daltepafin group were measured. The average anti-Xa activity was （0. 83± 0.26） U/ml at 15 minutes after intravenous injection of dalteparin and anti-Xa〉0.SU/ml was obtained in 96.1% of the patients; hematomas at puncture sites were significantly fewer in dalteparin group as compared with UFH group （2.3% vs 9.2%, P 〈 0.05）; none of the patients in 2 groups suffered major bleeding events. No death, acute arterial reocclusion or emergent revascularization events occurred at 30 days after PCI. Conclusions Our study demonstrated that early subcutaneous injection ofdalteparin at a dose 5,000U after diagnosis and an additional 60U/kg intravenous bolus ofdalteparin before PCI is safe and efficacious for patients with high risk non-ST-elevation ACS undergoing emergent PCI.

Illness Perception, Treatment Adherence and Coping in Persons with Coronary Artery Disease Undergoing Angioplasty

Background and Objective: Coronary artery disease (CAD) is the leading cause of sudden death. In this article, we compared patients’ illness perception (IP), treatment adherence and coping mechanisms of patients undergoing percutaneous transluminal coronary angioplasty (PTCA). Methods: In this descriptive, prospective observational study IP, treatment adherence and coping of 140 patients were evaluated pre-PTCA, at the time of hospital discharge and 1 to 3 months post-PTCA by Illness Perception Questionnaire, Morisky Treatment Adherence and Carver’s brief COPE questionnaires. Results: 1 - 3 months post-PTCA, all dimensions of IP changed significantly except personal and treatment control. Adherence scores decreased simultaneously. With respect to coping mechanisms, all increased except behavioral disengagement, emotional support, instrumental support and religion which decreased significantly post-PTCA. Conclusions: In Overall, an improved IP and increased use of controllable causal attributions led to an increase in medication adherence and adaptive coping strategies. Post-treatment health behaviors are predictable by assessing patients’ illness-related beliefs beforehand.

Effects of intracoronary arterial injection of tirofiban on no-reflow phenomenon in patients with acute ST-segment elevation myocardial infarction underwent primary percutaneous coronary intervention

Objective: To compare the effect of intracoronary arterial injection of tirofiban and sodium nitroprusside (SNP) on no-reflow phenomenon in patients with acute ST-segment elevation myocardial infarction (STEMI) underwent primary percutaneous coro-nary intervention (PCI). Methods: A total of 68 patients with acute STEMI who had no-reflow phenomenon during PCI were chosen and randomly divided into SNP group (n = 34) and tirofiban group (n = 34). Aiming at no-reflow phenomenon during PCI, with the use of microcatheters, intracoronary arterial injection of tirofiban was given in tirofiban group, while intracoronary bolus of SNP was given in SNP group. Coronary angiography was conducted to record TIMI flow grade of the infarct-related artery after 10 minutes. Plasma brain natriuretic peptide (BNP) was monitored before and after PCI (in 24 hours). With the help of ultrasound cardiogram, left ventricular ejection fraction (LVEF), left ventricular end-diastolic dimension (LVEDD) and left ventricular end-systolic dimension (LVESD) were recorded and compared in 30 days after PCI. Results: The ratio of TIMI grade 3 blood flow in tirofiban group was significantly higher than that in SNP group (76.5% (26/34) vs. 52.9% (18/34), p = .03)BNP levels in two groups had no statistical significance before PCI (p = .16), but in 24 h after PCI, BNP levels in tirofiban group were significantly lower than those in SNP group ((439.00 ± 4.90) μmol/L vs. (632.00 ± 3.63) μmol/L, p = .02)In 30 days after PCI, LVEF, LVEDD and LVESD in tirofiban group were all superior to those in SNP group (all p < .05). Conclusions: Intracoronary arterial injection of tirofiban was superior to SNP in improving no-reflow phenomenon in STEMI patients after PCI in the emergency treatment. Tirofiban therapy can increase coronary blood flow and myocardial perfusion after the occurrence of no-reflow phenomenon during PCI in STEMI patients, and improve long-term prognosis.

尿激酶原预处理联合PTCA治疗急性心肌梗死患者的效果

目的:观察尿激酶原预处理联合经皮冠状动脉腔内成形术(PTCA)治疗急性心肌梗死(AMI)患者的效果。方法:回顾性分析2019年1月至2021年1月该院收治的85例AMI患者的临床资料,按不同治疗方案分为观察组43例和对照组42例。对照组行PTCA治疗,观察组在对照组基础上采用尿激酶原预处理治疗,比较两组心肌梗死溶栓试验(TIMI)血流分级、心功能指标[左心室射血分数(LVEF)、左心室舒张末期内径(LVEDD)]水平、血清心型脂肪酸结合蛋白(HFABP)水平、凝集蛋白-1(ITLN-1)水平和主要心血管不良事件(MACE)发生率。结果:术后,观察组TIMI血流分级优于对照组,差异有统计学意义(P<0.05);术后1个月,观察组LVEF、ITLN-1水平高于对照组,LVEDD、HFABP水平低于对照组,差异有统计学意义(P<0.05);观察组MACE发生率为9.30%,低于对照组的40.48%,差异有统计学意义(P<0.05)。结论:尿激酶原预处理联合PTCA治疗AMI患者可改善TIMI血流分级、心功能指标水平,提高ITLN-1水平,降低HFABP水平和MACE发生率,效果优于单纯PTCA治疗。

PTCA及血管内支架术中冠脉循环血小板功能的变化

目的 探讨经皮腔内冠脉成形术 (PTCA)及冠脉内支架术对冠脉循环中血小板功能的影响 .方法 2 9例冠心病患者分成冠脉造影组 (8例 )和 PTCA加支架组 (2 1例 ) ,分别于术前及术后即刻采集冠状静脉窦血 ,采用比浊法测定血小板最大聚集率 (MPAR) ,放免法测定血小板α-颗粒膜蛋白(GMP- 140 )及血栓素 B2 (TXB2 )的浓度 .并对 PTCA及支架术中不同时间点血小板功能指标的变化情况进行了观察 .结果 冠脉造影前后血小板功能指标无显著变化 ;PTCA及支架组在球囊预扩张即刻各血小板功能指标均轻度增高 ;支架后即刻显著升高 (P<0 .0 5 ) ,支架后 10 min有下降趋势 .结论 冠脉造影对冠脉循环血小板功能无显著影响 ;

四逆汤防治PTCA术后再灌注损伤的作用机制及中医辨证分型的临床研究

目的：探讨不同证型患者服用四逆汤防治经皮冠状动脉内成形术（ｐｅｒｃｕｔａｎｅｏｕｓｔｒａｎｓｌｕｍｉｎａｌｃｏｒｏｎａｒｙａｎｇｉｏｐｌａｓｔｙ，ＰＴＣＡ）后再灌注损伤的作用以及对不同证型患者的影响。方法：对４０例做ＰＴＣＡ术患者随机分为四逆汤组和对照组，均有实证、虚证各１０例。四逆汤组于术前３天开始服用四逆汤２５ｍｌ，每天１次；服至术后第３天。检测两组各型ＰＴＣＡ术前后血超氧化物歧化酶（ＳＯＤ）活性、丙二醛（ＭＤＡ）含量及一氧化氮（ＮＯ）含量并进行比较。结果：术前虚证型ＳＯＤ活性显著低于实证型（Ｐ＜００５），术前实证型ＭＤＡ含量显著高于虚证型（Ｐ＜００５），服用四逆汤能减轻两组术后ＳＯＤ活性和ＮＯ浓度的下降及ＭＤＡ含量的升高（Ｐ＜００５），其中提高虚证型ＳＯＤ活性的幅度显著高于实证型（Ｐ＜００５）。结论：四逆汤具有抗ＰＴＣＡ术后再灌注损伤的作用，对虚证型效果尤好。

两种介入放射学(CA和PTCA)所致患者辐射剂量研究

目的以首都医科大学宣武医院的介入放射学中心为现场,着重选取介入放射学中较常实施的冠状动脉血管造影术(CA)和经皮穿刺腔内冠状动脉成形术(PTCA),对这两种医疗实践所致患者的辐射剂量进行调查监测和评价,探索临床介入放射学实践中较为恰当的监控方法。方法现场调查监测两种介入放射学实践所致患者的面积剂量乘积(DAP)和介入参考点的累积剂量(CD)等,样本积累了CA患者84例,PTCA患者51例;采用基于蒙特卡罗技术的PCXMC软件,根据现场在线监测的DAP和CD值数据,估算患者器官或组织的吸收剂量和全身有效剂量水平。运用热释光(TLD)剂量测量方法进行人体模型模拟实验研究,测量体内主要器官的吸收剂量,并与软件估算的结果进行比较。结果根据DAP和CD值采用软件估算得到的器官吸收剂量值与TLD测量的器官吸收剂量相比较,经配对t检验,检验结果P>0.05。对于PTCA,所监测的DAP范围为16423mGy·cm2至161973mGy·cm2,介入参考点处的累积剂量CD值为287mGy至2883mGy,有效剂量为2.3mSv至20.1mSv。对于CA,所监测的DAP范围为7611mGy·cm2至60538mGy·cm2,CD范围从120·0mGy至1016.0mGy,有效剂量为1·1mSv至6.9mSv。所得CA患者有效剂量与DAP值的转换系数为0.114mSv·Gy-1·cm-2至0.139mSv·Gy-1·cm-2;PTCA患者有效剂量与DAP值的转换系数为0.124mSv·Gy-1·cm-2至0.142mSv·Gy-1·cm-2。依据软件估算得到的介入患者各器官平均剂量水平和在线监测的CD值,还建立两种介入放射学实践所致患者器官剂量与CD值的转换系数。结论采用在线监测的DAP和CD值作为介入放射学实践所致患者辐射剂量的表征量,可以比较方便快捷地估算出患者有关器官的吸收剂量和全身有效剂量,为介入放射学实践及时提供患者受照的辐射剂量学信息,有利于指导和加强介入放射学中患者所受医疗照射的防护,有效防范患者可能受到的潜在电离辐射危险。并且提供了建立相应医疗照射指导水平的表征量和参考水平。

磁化支架防治犬PTCA术后冠状动脉再狭窄

目的 探讨磁化支架对 (PTCA,Percutaneoustranslum inal coronary angioplasty)术后冠状动脉再狭窄的防治作用 .方法 2 0只健康杂种犬 ,超大球囊反复扩张损伤靶血管 (前降支或旋支中段 )制备 PTCA术后冠状动脉狭窄模型 (大于 5 0 % )后随机分成对照组和实验组各 10只 ,对照组靶血管置入普通 Palmaz支架 ,实验组靶血管置入磁化 Palmaz支架 .手术前、后不用抗血小板药和抗凝药 ,术后 6 mo冠状动脉造影并处死犬 ,切取靶血管 3cm进行组织病理学检查 .结果 冠状动脉造影示冠状动脉再狭窄率对照组 30 % ,实验组 0 ;组织病理学检查靶血管平均内膜厚度 [对照组 (2 .98±0 .5 6 ) m m,实验组 (1.13± 0 .4 1) mm ]有显著差异 ,P<0 .0 5 .结论 磁化支架对犬 PTCA术后冠状动脉再狭窄有显著的防治作用 .

心肌灌注显像在PTCA支架术疗效判定和预后评估中的价值

目的 探讨心肌灌注显像对经皮冠状动脉腔内成形术 (PTCA)支架术疗效判定和预后评估的价值。方法 75例行PTCA支架术患者 ,术后 3～ 1 2个月内行运动或药物负荷心肌灌注断层显像 ,其中 4 1例有术前显像对照。术后随访 1 3～ 98个月。结果 4 1例患者术后心肌灌注改善率为73 1 7%;75例术后显像为正常、可逆性缺损或固定性缺损患者间 ,心脏事件发生率整体差异有极显著性 (P <0. 0 0 1 ) ,其中可逆性缺损与正常和固定性缺损患者间发生率差异均有显著性 (P <0. 0 1 7) ;生存分析依术后显像结果不同 ,无心脏事件概率曲线整体分布差异有显著性 (P <0 . 0 5 ) ,其中可逆性缺损与正常和固定性缺损患者间曲线分布差异均有显著性 (P <0 .0 5 )。结论 心肌灌注显像在PTCA支架术后疗效判定和预后评估中有应用价值。

^(99)Tc^m-MIBI运动-静息心肌显像在PTCA术后的临床价值

评价99Tcm 甲氧基异丁基异腈 (MIBI)运动 静息心肌 (ST RE)SPECT显像对经皮冠状动脉腔内成形 (PTCA)术后判断疗效、预测再狭窄以及估测预后的临床价值。方法 10 0例PTCA术后患者行ST RESPECT ,30例有术前对照 ,30例复查冠状动脉造影 (CAG) ,被扩冠状动脉所支配的心肌显像如为可逆性 (RD)和 (或 )部分可逆性缺损 (PRD) ,提示心肌缺血 ,冠状动脉再狭窄可能。患者在随访期间如发生心源性死亡、急性心肌梗死、不稳定性心绞痛和行血运重建术 ,认为有心脏事件发生。结果 ① 10 0例患者中 2 8%有心肌缺血 ,心肌缺血的发生率在心肌梗死组和无心肌梗死组差异无显著性 ( 2 4 0 %和 2 4 7% ,P >0 0 5) ;② 30例患者中 ,术后心肌灌注的改善率为 76 7% ,其中 12例完全恢复正常 ;③对 30例患者共 4 5支被扩冠状动脉 ,ST RESPECT和心电图运动试验对再狭窄诊断的阳性预测值分别为 88 8%和 55 0 % ,阴性预测值分别为 85 1%和 64 0 % ,预测准确性分别为86 7%和 60 0 % ;④心脏事件发生率在缺血组和无缺血组分别为 4 6 4 % ( 13 2 8例 )和 1 4 % ( 1 72例 ) ,差异有极显著性 ( χ2 >2 4 3 ,P <0 0 0 0 1)。结论 99Tcm MIBIST RESPECT对PTCA术后疗效的判断。