Objective. To review our preliminary experience and evaluate our early results of a combined intraoperative iliac angioplasty and stenting with infrainguinal revascularization in multilevel atherosclerotic occlusive d...Objective. To review our preliminary experience and evaluate our early results of a combined intraoperative iliac angioplasty and stenting with infrainguinal revascularization in multilevel atherosclerotic occlusive disease. Methods. From July 1999 to April 2000, intraoperative iliac angioplasty and stenting combined with simultaneous femoro- popliteal bypass were performed on 12 lower extremities of 10 patients suffering from multilevel atherosclerotic occlusive disease. There were 8 men and 2 women, average 72 years. The indications for procedures included disabling claudication in 3 and rest pain in 7 patients. Results. Eleven iliac angioplasty and stent procedures combined with simultaneous 9 femoro- popliteal bypass and 3 femoro- femoral- popliteal bypass were performed in 12 limbs of 10 patients. Angioplasty and stent placement was technically successful in all patients. One contralateral femoral- popliteal bypass was failure after femorofemoral- popliteal bypass. There were no additional instances of procedural or postoperative morbidity or mortali- ty. Mean follow- up was 5 months (range 1～ 10 months). During the follow- up period, one femoro- infrapopliteal graft became occluded after 7 months and above- knee amputation was required. The cumulative primary patency rate of stented iliac arteries, femoro- femoral bypass grafts and femoro- popliteal bypass grafts were 100％ (11/11), 100％ (3/3) and 90.9％ (10/11) in the follow- up period, respectively. The amputation rate was 8.3％ (1/12). Conclusions. Intraoperative iliac artery PTA and stent placement can be safely and effectively performed simultaneously with infrainguinal revascularization for multilevel atherosclerotic occlusive disease by skilled vascular surgeon, using a portable C arm fluoroscopy in the operating room. Furthermore, iliac artery PTA and stenting was valuable adjunct to distal bypass either to improve inflow and outflow, or to reduce the extent of traditional surgical intervention, and also, any angioplasty and stenting- related complications can be immediately corrected as well.展开更多
Objectives To assess the impact on stent implantation rate and mid-term outcomes of prolonged high pressure angioplasty of femoropopliteal lesions. Methods We retrospectively enrolled 620 consecutive patients from Jan...Objectives To assess the impact on stent implantation rate and mid-term outcomes of prolonged high pressure angioplasty of femoropopliteal lesions. Methods We retrospectively enrolled 620 consecutive patients from January 2011 to December 2011 （75.6 ±12.3 years, 355 males, 76.5%in Rutherford class 5-6）, referred for critical limb ischemia and submitted to prolonged high-pressure angioplasty of femoropopliteal lesions. The definition of prolonged high-pressure angioplasty includes dilation to at least 18 atm for at least 120 s. Proce-dural data, and clinical and instrumental follow-up were analyzed to assess stent implantation rate and mid-term outcomes. Results The preferred approach was ipsilateral femoral antegrade in 433/620 patients （69.7%） and contralateral cross-over in 164/620 （26.4%） and pop-liteal retrograde＋femoral antegrade in 23/620 （3.7%）. Techniques included subintimal angioplasty in 427/620 patients （68.8%） and endolu-minal angioplasty in 193/620 patients （31.2%）. The prolonged high pressure balloon angioplasty procedure was successful in 86.2%（minor intra-procedural complications rate 15.7%）, stent implantation was performed in 74 patients （11.9%）, with a significant improvement of ankle-brachial index （0.29 ±0.6 vs. 0.88 ±0.3, P〈0.01） and Rutherford class （5.3 ±0.8 vs. 0.7 ±1.9, P〈0.01）, a primary patency rate of 86.7%, restenosis of 18.6%on Doppler ultrasound and a target lesion revascularization of 14.8%at a mean follow-up of 18.1 ±6.4 months （range 1-24 months）. Secondary patency rate was 87.7%. Conclusions Prolonged high pressure angioplasty of femoropopliteal lesions appears to be safe and effective allowing for an acceptable patency and restenosis rates on mid-term.展开更多
Patients with below-the-knee arterial disease are primarily individuals suffering from critical limb ischemia(CLI), while a large percentage of these patients are also suffering from diabetes or chronic renal failure ...Patients with below-the-knee arterial disease are primarily individuals suffering from critical limb ischemia(CLI), while a large percentage of these patients are also suffering from diabetes or chronic renal failure or both. Available data from randomized controlled trials and their meta-analysis demonstrated that the use of infrapopliteal drug-eluting stents(DES), in short-to medium-length lesions, obtains significantly better results compared to plain balloon angioplasty and bare metal stenting with regards to vascular restenosis, target lesion revascularization, wound healing and amputations. Nonetheless, the use of this technology in every-day clinical practice remains limited mainly due to concerns regarding the deployment of a permanent metallic scaffold and the possibility of valid future therapeutic perspectives. However, in the majority of the cases, these concerns are not scientifically justified. Large-scale, multicenter randomized controlled trials, investigating a significantly larger number of patients than those already published, would provide more solid evidence and consolidate the use of infrapopliteal DES in CLI patients. Moreover, there is still little evidence on whether this technology can be as effective for longer below-the-knee lesions, where a considerable number of DES is required. The development and investigation of new, longer balloon-expanding or perhaps selfexpanding DES could be the answer to this problem.展开更多
Objective To evaluate the feasibility,safety and efficacy of percutaneous stent implantation for treating left main coronary artery(LMCA)stenosis.Methods Consecutive patients with unprotected left main coronary artery...Objective To evaluate the feasibility,safety and efficacy of percutaneous stent implantation for treating left main coronary artery(LMCA)stenosis.Methods Consecutive patients with unprotected left main coronary artery disease treated by stent-based percutaneous intervention(PCI)at 6 medical centers in China were enrolled.Procedural data and clinical outcomes were obtained from all patients.Results From January 2001 to December 2004,138 patients(79 males and 59 females;mean age:69.7±5.8 years)underwent PCI for LMCA stenosis.Bare metal stents(BMS)were implanted in 51 patients with non-bifurcational lesions and in 5 patients with bifurcational lesions from January of 2001 to June of 2003(BMS group);.Drug eluting stents(DES)were used unselectively to cover both bifurcational and non-bifurcational lesions in 86 patients from July of 2003 to December of 2004(DES group).Procedural success rate of the 138 cases was 98%(135/138).One patient(0.7%)with bifurcation lesion who was treated with DES died from severe heart failure 2 weeks after the procedure.During a mean follow up period of 21.3±5.6 months,one patient died from renal failure,one from sudden cardiac death,4 underwent target lesion revascularization(TLR)in the BMS group,which all occurred in patients with bifurcational lesions;whereas in the DES group no deaths occurred and only one patient with bifurcational lesion had TLR.Conclusions(1)PCI is feasible and relatively safe to treat unprotected left main coronary artery disease in elderly patients at medical centers with experienced professionals.(2)BMS and DES have similar immediate and long-term efficacy in the treatment of ostium and shaft lesions of the LMCA.(3)DES are strongly suggested in the therapy of distal bifurcation lesion of unprotected LMCA.展开更多
Current treatment strategies for multi-vessel coronary artery disease include either coronary artery bypass surgery or percutaneous coronary intervention with stenting. The present study evaluates the morbidity and mo...Current treatment strategies for multi-vessel coronary artery disease include either coronary artery bypass surgery or percutaneous coronary intervention with stenting. The present study evaluates the morbidity and mortality among coronary artery disease patients undergoing triple-vessel angioplasty. This prospective record based descriptive study was carried out in Medical College, Pariyaram, Kannur, Kerala;a tertiary care cardiac centre in South India. Fifty consecutive patients who underwent angioplasty of one or more lesions in each of the three major coronary arteries from May 2010 to July 2012 were included in the study. The study describes the clinical profile of the patients and a moderate term clinical follow-up to reassess the symptoms, functional status and left ventricular function by history, electrocardiogram, echocardiogram, and treadmill test. Mortality and morbidity were considered as end-points of the study. Event-free survival rate was 94% at a mean follow-up of 20 months. Overall 98% continued success was obtained with triple-vessel angioplasty. Triple-vessel angioplasty is a safe and effective therapy as an alternative to surgical revascularization in selected patients with triple-vessel coronary artery disease.展开更多
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 asses...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.展开更多
Purpose: The aim of this study was to determine the influence of lesion preparation using the dual wire scoring balloon on stent expansion and long-term outcomes. Methods: Forty-six consecutive de novo lesions treated...Purpose: The aim of this study was to determine the influence of lesion preparation using the dual wire scoring balloon on stent expansion and long-term outcomes. Methods: Forty-six consecutive de novo lesions treated with a single >2.5 mm drug-eluting stent under intravascular ultrasound guidance, using two implantation strategies, were randomly assigned to: 1) pre-dilation with a non-compliant balloon (NC group;n = 23) or 2) pre-dilation with a dual wire scoring balloon (DS group;n = 23). Results: Although the balloon size and the maximal dilation pressure for pre-dilatation was larger (3.33 ± 0.28 vs 3.09 ± 0.33 mm, p = 0.01) and higher (11.6 ± 3.2 vs 8.6 ± 2.7 atm,展开更多
Objective To research the effect of percutaneous transluminalcoronary angioplasty (PTCA) on treating complicated artery lesions.Methods Type B or type C of complicated coronary artery lesionswere confirmed by selectiv...Objective To research the effect of percutaneous transluminalcoronary angioplasty (PTCA) on treating complicated artery lesions.Methods Type B or type C of complicated coronary artery lesionswere confirmed by selective coronary angingraphy in 16 cases with coronaryheart disease.Gruentzig’s method was used in carring out PTCA.Results Fifteen of sixteen and thirty-two of thirty-five parts ofcoronary artery lesions were dilated successfully,the success rate was 93.7%and 88.5%,respectively.In failed four parts of PTCA,three parts werebecause of the guilding wire or the balloon failed to pass the narrow arterythrough,the other one was unable to be performed for the occurrencedsevere arrthymia during the procedure.Four stents were implantend foracute accident.Symptoms of the successful cases were improved ordisappeared after PTCA.Conclusion PTCA is also fit in treating complicated coronary arterylesions and has a better therapeutic effect,but it has more complications andrun more risks relatively.展开更多
Both open and closed loop self-expandable stents were used in carotid artery stenting（CAS） for carotid bifurcation stenosis. We sought to compare the efficacy of two types of stents in CAS. The data of 212 patients ...Both open and closed loop self-expandable stents were used in carotid artery stenting（CAS） for carotid bifurcation stenosis. We sought to compare the efficacy of two types of stents in CAS. The data of 212 patients treated with CAS（42 and 170 cases implanted with closed and open loop stents, respectively） for carotid bifurcation stenosis and distal filtration protection devices were retrospectively analyzed. Between closed and open loop stents, there were no significant differences in hospitalization duration, NIHSS score before and after the treatment, stenosis at 12 th month, and cumulative incidence of primary endpoint events within 30 days or from the 31 st day to the 12 th month; while there were significant differences in hemodynamic changes and rate of difficulty in recycling distal filtration protection devices. Use of open vs. closed loop stents for carotid bifurcation stenosis seems to be associated with similar incidence of complications, except for greater rate of hemodynamic changes and lower rate of difficulty in recycling the distal filtration protection devices.展开更多
Objective:To evaluate the effects of percutaneoustransluminal coronary angioplasty(PTCA) and intracoronarystents.Methods:PTCA was performed in 63 patients with 107diseased vessels and 121 lesions.Results:Effective dil...Objective:To evaluate the effects of percutaneoustransluminal coronary angioplasty(PTCA) and intracoronarystents.Methods:PTCA was performed in 63 patients with 107diseased vessels and 121 lesions.Results:Effective dilatation was performed in 79 of the107 diseased vessels and 103 of the 121 lesions,type Alesions were 25(24.3%);type B and C 78(75.7%).Theaverage dilatation time was 3.6±2.8,the average dilatationduration was 68±98 secondes and the average maxiumdilatation pressure was 8.5±2.9 atm.The average severity ofthe coronary artery stenosis decreased from 90% to 6%,thestenosis was disappeared completely in 93 lesions afterPTCA.Forty-one coronary stents were implanted with theaim of treating acute vessels occlusion in 2 cases andpreventing restenosis after PTCA in 32 cases.The ischemicST-T Changes of ECG and symptoms were improvedsignificantly in these patients post-PTCA.Conclusion:PTCA is a safe and effective therapy for thepatients with coronary heart disease,and coronary stent is avery effective method to treat acute coronary occlusionduring PTCA.展开更多
文摘Objective. To review our preliminary experience and evaluate our early results of a combined intraoperative iliac angioplasty and stenting with infrainguinal revascularization in multilevel atherosclerotic occlusive disease. Methods. From July 1999 to April 2000, intraoperative iliac angioplasty and stenting combined with simultaneous femoro- popliteal bypass were performed on 12 lower extremities of 10 patients suffering from multilevel atherosclerotic occlusive disease. There were 8 men and 2 women, average 72 years. The indications for procedures included disabling claudication in 3 and rest pain in 7 patients. Results. Eleven iliac angioplasty and stent procedures combined with simultaneous 9 femoro- popliteal bypass and 3 femoro- femoral- popliteal bypass were performed in 12 limbs of 10 patients. Angioplasty and stent placement was technically successful in all patients. One contralateral femoral- popliteal bypass was failure after femorofemoral- popliteal bypass. There were no additional instances of procedural or postoperative morbidity or mortali- ty. Mean follow- up was 5 months (range 1～ 10 months). During the follow- up period, one femoro- infrapopliteal graft became occluded after 7 months and above- knee amputation was required. The cumulative primary patency rate of stented iliac arteries, femoro- femoral bypass grafts and femoro- popliteal bypass grafts were 100％ (11/11), 100％ (3/3) and 90.9％ (10/11) in the follow- up period, respectively. The amputation rate was 8.3％ (1/12). Conclusions. Intraoperative iliac artery PTA and stent placement can be safely and effectively performed simultaneously with infrainguinal revascularization for multilevel atherosclerotic occlusive disease by skilled vascular surgeon, using a portable C arm fluoroscopy in the operating room. Furthermore, iliac artery PTA and stenting was valuable adjunct to distal bypass either to improve inflow and outflow, or to reduce the extent of traditional surgical intervention, and also, any angioplasty and stenting- related complications can be immediately corrected as well.
文摘Objectives To assess the impact on stent implantation rate and mid-term outcomes of prolonged high pressure angioplasty of femoropopliteal lesions. Methods We retrospectively enrolled 620 consecutive patients from January 2011 to December 2011 （75.6 ±12.3 years, 355 males, 76.5%in Rutherford class 5-6）, referred for critical limb ischemia and submitted to prolonged high-pressure angioplasty of femoropopliteal lesions. The definition of prolonged high-pressure angioplasty includes dilation to at least 18 atm for at least 120 s. Proce-dural data, and clinical and instrumental follow-up were analyzed to assess stent implantation rate and mid-term outcomes. Results The preferred approach was ipsilateral femoral antegrade in 433/620 patients （69.7%） and contralateral cross-over in 164/620 （26.4%） and pop-liteal retrograde＋femoral antegrade in 23/620 （3.7%）. Techniques included subintimal angioplasty in 427/620 patients （68.8%） and endolu-minal angioplasty in 193/620 patients （31.2%）. The prolonged high pressure balloon angioplasty procedure was successful in 86.2%（minor intra-procedural complications rate 15.7%）, stent implantation was performed in 74 patients （11.9%）, with a significant improvement of ankle-brachial index （0.29 ±0.6 vs. 0.88 ±0.3, P〈0.01） and Rutherford class （5.3 ±0.8 vs. 0.7 ±1.9, P〈0.01）, a primary patency rate of 86.7%, restenosis of 18.6%on Doppler ultrasound and a target lesion revascularization of 14.8%at a mean follow-up of 18.1 ±6.4 months （range 1-24 months）. Secondary patency rate was 87.7%. Conclusions Prolonged high pressure angioplasty of femoropopliteal lesions appears to be safe and effective allowing for an acceptable patency and restenosis rates on mid-term.
文摘Patients with below-the-knee arterial disease are primarily individuals suffering from critical limb ischemia(CLI), while a large percentage of these patients are also suffering from diabetes or chronic renal failure or both. Available data from randomized controlled trials and their meta-analysis demonstrated that the use of infrapopliteal drug-eluting stents(DES), in short-to medium-length lesions, obtains significantly better results compared to plain balloon angioplasty and bare metal stenting with regards to vascular restenosis, target lesion revascularization, wound healing and amputations. Nonetheless, the use of this technology in every-day clinical practice remains limited mainly due to concerns regarding the deployment of a permanent metallic scaffold and the possibility of valid future therapeutic perspectives. However, in the majority of the cases, these concerns are not scientifically justified. Large-scale, multicenter randomized controlled trials, investigating a significantly larger number of patients than those already published, would provide more solid evidence and consolidate the use of infrapopliteal DES in CLI patients. Moreover, there is still little evidence on whether this technology can be as effective for longer below-the-knee lesions, where a considerable number of DES is required. The development and investigation of new, longer balloon-expanding or perhaps selfexpanding DES could be the answer to this problem.
文摘Objective To evaluate the feasibility,safety and efficacy of percutaneous stent implantation for treating left main coronary artery(LMCA)stenosis.Methods Consecutive patients with unprotected left main coronary artery disease treated by stent-based percutaneous intervention(PCI)at 6 medical centers in China were enrolled.Procedural data and clinical outcomes were obtained from all patients.Results From January 2001 to December 2004,138 patients(79 males and 59 females;mean age:69.7±5.8 years)underwent PCI for LMCA stenosis.Bare metal stents(BMS)were implanted in 51 patients with non-bifurcational lesions and in 5 patients with bifurcational lesions from January of 2001 to June of 2003(BMS group);.Drug eluting stents(DES)were used unselectively to cover both bifurcational and non-bifurcational lesions in 86 patients from July of 2003 to December of 2004(DES group).Procedural success rate of the 138 cases was 98%(135/138).One patient(0.7%)with bifurcation lesion who was treated with DES died from severe heart failure 2 weeks after the procedure.During a mean follow up period of 21.3±5.6 months,one patient died from renal failure,one from sudden cardiac death,4 underwent target lesion revascularization(TLR)in the BMS group,which all occurred in patients with bifurcational lesions;whereas in the DES group no deaths occurred and only one patient with bifurcational lesion had TLR.Conclusions(1)PCI is feasible and relatively safe to treat unprotected left main coronary artery disease in elderly patients at medical centers with experienced professionals.(2)BMS and DES have similar immediate and long-term efficacy in the treatment of ostium and shaft lesions of the LMCA.(3)DES are strongly suggested in the therapy of distal bifurcation lesion of unprotected LMCA.
文摘Current treatment strategies for multi-vessel coronary artery disease include either coronary artery bypass surgery or percutaneous coronary intervention with stenting. The present study evaluates the morbidity and mortality among coronary artery disease patients undergoing triple-vessel angioplasty. This prospective record based descriptive study was carried out in Medical College, Pariyaram, Kannur, Kerala;a tertiary care cardiac centre in South India. Fifty consecutive patients who underwent angioplasty of one or more lesions in each of the three major coronary arteries from May 2010 to July 2012 were included in the study. The study describes the clinical profile of the patients and a moderate term clinical follow-up to reassess the symptoms, functional status and left ventricular function by history, electrocardiogram, echocardiogram, and treadmill test. Mortality and morbidity were considered as end-points of the study. Event-free survival rate was 94% at a mean follow-up of 20 months. Overall 98% continued success was obtained with triple-vessel angioplasty. Triple-vessel angioplasty is a safe and effective therapy as an alternative to surgical revascularization in selected patients with triple-vessel coronary artery disease.
文摘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.
文摘Purpose: The aim of this study was to determine the influence of lesion preparation using the dual wire scoring balloon on stent expansion and long-term outcomes. Methods: Forty-six consecutive de novo lesions treated with a single >2.5 mm drug-eluting stent under intravascular ultrasound guidance, using two implantation strategies, were randomly assigned to: 1) pre-dilation with a non-compliant balloon (NC group;n = 23) or 2) pre-dilation with a dual wire scoring balloon (DS group;n = 23). Results: Although the balloon size and the maximal dilation pressure for pre-dilatation was larger (3.33 ± 0.28 vs 3.09 ± 0.33 mm, p = 0.01) and higher (11.6 ± 3.2 vs 8.6 ± 2.7 atm,
文摘Objective To research the effect of percutaneous transluminalcoronary angioplasty (PTCA) on treating complicated artery lesions.Methods Type B or type C of complicated coronary artery lesionswere confirmed by selective coronary angingraphy in 16 cases with coronaryheart disease.Gruentzig’s method was used in carring out PTCA.Results Fifteen of sixteen and thirty-two of thirty-five parts ofcoronary artery lesions were dilated successfully,the success rate was 93.7%and 88.5%,respectively.In failed four parts of PTCA,three parts werebecause of the guilding wire or the balloon failed to pass the narrow arterythrough,the other one was unable to be performed for the occurrencedsevere arrthymia during the procedure.Four stents were implantend foracute accident.Symptoms of the successful cases were improved ordisappeared after PTCA.Conclusion PTCA is also fit in treating complicated coronary arterylesions and has a better therapeutic effect,but it has more complications andrun more risks relatively.
文摘Both open and closed loop self-expandable stents were used in carotid artery stenting（CAS） for carotid bifurcation stenosis. We sought to compare the efficacy of two types of stents in CAS. The data of 212 patients treated with CAS（42 and 170 cases implanted with closed and open loop stents, respectively） for carotid bifurcation stenosis and distal filtration protection devices were retrospectively analyzed. Between closed and open loop stents, there were no significant differences in hospitalization duration, NIHSS score before and after the treatment, stenosis at 12 th month, and cumulative incidence of primary endpoint events within 30 days or from the 31 st day to the 12 th month; while there were significant differences in hemodynamic changes and rate of difficulty in recycling distal filtration protection devices. Use of open vs. closed loop stents for carotid bifurcation stenosis seems to be associated with similar incidence of complications, except for greater rate of hemodynamic changes and lower rate of difficulty in recycling the distal filtration protection devices.
文摘Objective:To evaluate the effects of percutaneoustransluminal coronary angioplasty(PTCA) and intracoronarystents.Methods:PTCA was performed in 63 patients with 107diseased vessels and 121 lesions.Results:Effective dilatation was performed in 79 of the107 diseased vessels and 103 of the 121 lesions,type Alesions were 25(24.3%);type B and C 78(75.7%).Theaverage dilatation time was 3.6±2.8,the average dilatationduration was 68±98 secondes and the average maxiumdilatation pressure was 8.5±2.9 atm.The average severity ofthe coronary artery stenosis decreased from 90% to 6%,thestenosis was disappeared completely in 93 lesions afterPTCA.Forty-one coronary stents were implanted with theaim of treating acute vessels occlusion in 2 cases andpreventing restenosis after PTCA in 32 cases.The ischemicST-T Changes of ECG and symptoms were improvedsignificantly in these patients post-PTCA.Conclusion:PTCA is a safe and effective therapy for thepatients with coronary heart disease,and coronary stent is avery effective method to treat acute coronary occlusionduring PTCA.
