Search Results
Results 401 - 450 of 1181
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Di Luzio V - - 1998
OBJECTIVES: This study was undertaken: 1) to assess the efficacy of traditional PTCA in affording "optimal" initial dilatation (OID) of coronary stenoses (as assessed by on-line quantitative angiography) defined as a post-procedure residual lumen narrowing < or = 20%; 2) to determine clinical and angiographic correlates of these types of ...
Murakami T - - 1998
To investigate the pathogenesis of acute myocardial infarction (AMI) and values of intracoronary aspiration thrombectomy (ICAT), we applied ICAT to reperfusion therapy using generally available intracoronary catheters to aspirate intracoronary occlusive tissues. We assigned ICAT or primary percutaneous transluminal coronary angioplasty (PTCA) to patients with evolving AMI (Thrombolysis In Myocardial ...
Bär FW - - 1998
To study the safety and efficacy of the thrombolytic agent saruplase as a bolus, the angiographic and clinical outcomes of three bolus regimens were investigated in a pilot study conducted in 192 patients with an acute myocardial infarction and were compared with the standard regimen. Fifty-two patients received a double ...
Garot P - - 1998
Percutaneous transluminal coronary angioplasty (PTCA) for acute myocardial infarction (AMI) achieves high patency rates. Conversely, it has been shown that after thrombolysis, early reocclusion of the infarct-related artery (IRA) is associated with substantial morbidity and mortality. The aim of this retrospective study was to study the incidence, prognostic implications, and ...
Aengevaeren W R - - 1998
Two essentially different methods for physiological evaluation of coronary artery disease were compared in the setting of angioplasty and related to quantitative coronary angiography. Forty-five patients, referred for percutaneous transluminal coronary angioplasty (PTCA), were examined by digital subtraction angiography (DSA) and by coronary flow velocity measurements distal to the target ...
Lefevre T - - 1998
Contradictory data concerning the use of non-ionic contrast media during percutaneous coronary angioplasty (PTCA) have been published. Many clinical studies have suggested that a higher rate of PTCA complications (using balloon angioplasty) was observed using non-ionic versus ionic contrast media. In order to verify these results in the era of ...
Shimonagata T - - 1998
To elucidate the changes in oxidative metabolism in hibernating myocardium after coronary revascularization, we performed myocardial single-photon emission computed tomography with a free fatty acid analog, I-123 beta-methyliodophenylpentadecanoic acid (BMIPP), and thallium-201 before and 1 month after percutaneous transluminal coronary angioplasty (PTCA) in 11 patients with angina pectoris caused by ...
Brener S J - - 1998
The benefit of catheter-based reperfusion for acute myocardial infarction (MI) is limited by a 5% to 15% incidence of in-hospital major ischemic events, usually caused by infarct artery reocclusion, and a 20% to 40% need for repeat percutaneous or surgical revascularization. Platelets play a key role in the process of ...
Kurbaan A S - - 1998
Restenosis is a major limitation of percutaneous transluminal coronary angioplasty (PTCA). In this study, we assessed the impact of restenosis on PTCA with reference to coronary angioplasty bypass grafting (CABG). In the Coronary Angioplasty versus Bypass Revascularisation Investigation (CABRI) PTCA population, those who had restenosis were defined as those needing ...
Mazur W - - 1998
BACKGROUND: The aim of the study was to determine whether the recovery of global and regional left ventricular function after successful percutaneous transluminal angioplasty (PTCA) could be predicted by measuring coronary flow reserve before performing the intervention. METHODS AND RESULTS: Thirty-two patients underwent PTCA 6.9 +/- 3.4 days after a ...
Manson-Siddle C J - - 1998
OBJECTIVES: To investigate socioeconomic variations in the utilisation of tertiary cardiology services. DESIGN: Cross sectional ecological study, using the Super Profile classification of enumeration districts, and ischaemic heart disease standardised mortality ratios as a proxy for needs. SETTING: The former Yorkshire Regional Health Authority area in England and its seven ...
Dauerman H L - - 1998
Previous studies have shown a high rate of repeat intervention after treating diffuse in-stent restenosis with percutaneous transluminal coronary angioplasty (PTCA) alone. It is not clear whether debulking with atherectomy is more effective in this condition. Between January 1994 and February 1997, we treated 60 consecutive patients with diffuse in-stent ...
Won A - - 1998
OBJECTIVE: To evaluate perioperative and long-term morbidity in patients undergoing selective evaluation of coronary artery disease prior to abdominal aortic aneurysm (AAA) repair. DESIGN: Case series. SETTING: University and Veterans' Administration medical centers. PATIENTS: One hundred eighty-nine consecutive patients undergoing AAA repair between January 1989 and September 1996 were selectively ...
Tooth L R - - 1998
This study aimed to evaluate whether a pre-procedural education/counselling program can improve knowledge and coronary risk factors in 130 patients (65 experimental; 65 comparison) approximately four months after having percutaneous transluminal coronary angioplasty (PTCA). Knowledge and physical activity levels (p = 0.00) improved for both groups from pre-PTCA to the ...
Tideman P A - - 1998
The patterns of revascularisation with percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass graft (CABG) surgery in the GUSTO 1 trial patients in Australia are described. In comparison with rates documented in earlier trials of thrombolytic therapy in Australia, the rates of revascularisation post-thrombolysis increased by 50%, primarily due ...
Regenfus M - - 1998
Poststenotic intracoronary flow velocity measurements both prior to and following percutaneous transluminal coronary angioplasty (PTCA) by use of a Doppler-tipped guidewire allow estimation of haemodynamic improvement due to interventional procedures. Since poststenotic coronary artery vasoconstriction routinely occurs after PTCA, haemodynamic improvement may be overestimated when measured by flow velocity alone. ...
Vaitkus P T - - 1998
CONTEXT: New Medicare reimbursement policies will move stents into a different diagnosis-related group (DRG) than conventional balloon angioplasty (percutaneous transluminal coronary angioplasty [PTCA]). OBJECTIVE: To examine the financial impact on hospitals and Medicare of these planned changes, taking into account costs, reimbursement, and the cost-offset effect of prevented complications. DESIGN: ...
Yambe T - - 1998
With the increase of ischemic diseases of the circulatory system in Japan, the necessity for cardiovascular intervention continues to increase. However, because intervention operations have been developed only recently, the education system for the corresponding specialists in our country has not been established yet. In this study, an intervention educational ...
Sakakibara M - - 1998
The long-term relative benefits of thrombolysis and mechanical reperfusion therapy following acute myocardial infarction (AMI) have not been established. The purpose of this study was to compare left ventricular function, left ventricular remodeling and late outcome after AMI for different reperfusion therapies. Thirty consecutive patients suffering their first anterior wall ...
McLaughlin P R - - 1998
The primary objective of the Diabetes Atherosclerosis Intervention Study (DAIS) is to determine by quantitative coronary angiography whether long-term correction of the dyslipoproteinemia of diabetes with micronized fenofibrate results in evidence of decreased progression or regression of angiographically measured obstructive coronary atherosclerosis. The purpose of this communication is to describe ...
Flachskampf F A - - 1998
Fibrinolytic therapy for acute myocardial infarction, even with the most efficient regimens available, is fraught with a substantial proportion of failures to reopen the occluded vessel. The term rescue percutaneous transluminal coronary angioplasty (PTCA) has been introduced to describe an attempt to mechanically recanalize the infarct vessel if fibrinolytic reperfusion ...
Oberhoff M - - 1998
The purpose of this study was to assess safety and feasibility of intracoronary delivery of reviparin using a porous balloon following percutaneous transluminal coronary angioplasty. The 2.7 mm porous balloon used in this study had 35 holes arranged in a spiral pattern. Eighteen patients (male n = 10, female n ...
Gruberg L - - 1998
Failed thrombolysis in acute myocardial infarction (AMI) patients is associated with a high risk of morbidity and mortality. Rescue or salvage percutaneous transluminal coronary angioplasty (PTCA) in this group of patients is still controversial. We report our experience with early emergency angiography and rescue PTCA in 27 patients who were ...
Hartford K - - 1998
OBJECTIVES: Administrative data from Manitoba, Canada document variation in procedure utilization rates over a period of 15 years. With coronary angiography and cardiovascular surgery centralized in the capital, Winnipeg, previous analyses from 1977 to 1983 found angiography and coronary artery bypass surgery (CABS) rates to be higher for residents of ...
Overlie P A - - 1998
It has been widely reported throughout studies comparing mechanical reperfusion by primary percutaneous transluminal coronary angioplasty (PTCA) with thrombolytic therapy in acute myocardial infarction (AMI) that PTCA results in reduced rates of in-hospital mortality, reinfarction, recurrent ischemia, and stroke, allowing earlier hospital discharge with similar total costs. The attraction of ...
Dangas G - - 1998
Balloon angioplasty (percutaneous transluminal coronary angioplasty, PTCA) is an established common strategy in the treatment of acute myocardial infarction (MI) with high success rates but a 5-10% incidence of reclosure/reinfarction due to thrombus and/or intimal flaps. Directional coronary atherectomy (DCA) by removing plaque/thrombus and achieving larger postprocedural luminal diameter may ...
Krüger D - - 1998
This study was designed to assess the release kinetics of endothelin after percutaneous transluminal coronary angioplasty (PTCA) and to prove the coronary endothelium as the source of the endothelin release. Twenty-seven patients with single-vessel coronary artery disease underwent PTCA. Endothelin, troponin T, myoglobin, and creatine phosphokinase paired blood samples were ...
Boekstegers P - - 1998
OBJECTIVES: We sought to study the safety, feasibility and efficacy of selective suction and pressure-regulated retroinfusion to protect against myocardial ischemia in patients undergoing normal risk and high risk balloon angioplasty. BACKGROUND: In a pig model of acute myocardial ischemia it was previously shown that use of selective suction and ...
Betsou S - - 1998
The objective of the present project was the determination of the dose received by patients during cardiac procedures, such as coronary angiography, percutaneous transluminal coronary angioplasty (PTCA) and stent implantation. Thermoluminescent dosemeters (TLDs), suitably calibrated, were used for the measurement of the dose received at four anatomical locations on the ...
Ross A M - - 1998
OBJECTIVES: We sought to assess the angiographic outcome, complication rates and clinical features of percutaneous transluminal coronary angioplasty (PTCA) after failed thrombolysis for acute myocardial infarction. BACKGROUND: "Rescue angioplasty" refers to mechanical reopening of an occluded infarct-related artery (IRA) after failed intravenous thrombolysis. Although the procedure is commonly performed, data ...
Malekianpour M - - 1998
BACKGROUND: Acute complications of percutaneous transluminal coronary angioplasty (PTCA) are more common in patients with unstable coronary syndromes. The objective of this study was to prospectively determine the differences between ionic and nonionic low osmolar contrast media (LOCM) on potential risk of acute complications, particularly abrupt vessel closure, in patients ...
Bauernschmitt R - - 1998
Administration of C1-esterase inhibitor (C1-INH) attenuates myocardial necrosis and sustains normal cardiac performance after myocardial ischemia and reperfusion in animal experiments. We report on our first experience of C1-INH application as rescue therapy in patients undergoing emergency surgical revascularization after failed percutaneous transluminal coronary angioplasty. Three patients were treated, because ...
Dzavik V - - 1998
Percutaneous transluminal coronary angioplasty (PTCA) of totally occluded coronary arteries is performed in a variety of clinical settings and for a variety of indications. Most commonly it is performed for relief of symptoms of myocardial ischemia. Studies have also suggested that PTCA of occluded arteries beyond the acute phase of ...
Gowda M S - - 1998
Risk factors and outcomes associated with non-Q-wave myocardial infarction (MI) in diabetics and nondiabetics were analyzed for 376 consecutive patients, 77 with diabetes (20%) and 299 nondiabetics (80%), who had non-Q-wave MI and had percutaneous transluminal coronary angioplasty (PTCA) performed before discharge from hospital during the period from January 1992 ...
Saito T - - 1998
Culprit lesions in acute coronary syndrome [acute myocardial infarction (AMI) and unstable angina pectoris (UAP)] were examined angiographically in 222 patients who had previously undergone coronary angiography (CAG). The observation period lasted 5 years after primary CAG in medically treated patients (group M, 127 cases) and after final follow-up CAG ...
Tiefenbrunn A J - - 1998
OBJECTIVES: We sought to compare outcomes after primary percutaneous transluminal coronary angioplasty (PTCA) or thrombolytic therapy for acute myocardial infarction (MI). BACKGROUND: Primary PTCA and thrombolytic therapy are alternative means of achieving reperfusion in patients with acute MI. The Second National Registry of Myocardial Infarction (NRMI-2) offers an opportunity to ...
Cheong Y M - - 1998
BACKGROUND: Numerous publications from European and Canadian centres have documented the feasibility of performing percutaneous transluminal coronary angioplasty (PTCA) without on-site surgical facilities. The absolute need for surgical standby has been changing especially with the introduction of coronary stent for bailout situations. This practice may be applicable in Australian centres ...
Ignaszewski A - - 1998
Coronary revascularization, first with coronary artery bypass graft (CABG) surgery and later using percutaneous transluminal coronary angioplasty (PTCA), has been available as a treatment procedure for patients with anginal syndromes for over three decades. During this time, the number of procedures performed has risen exponentially. The most recent development has ...
Bech G J - - 1998
OBJECTIVES: This study sought to determine the safety of deferral of percutaneous transluminal coronary angioplasty (PTCA) of angiographically intermediate but functionally nonsignificant stenosis, as assessed by coronary pressure measurement and myocardial fractional flow reserve (FFRmyo). BACKGROUND: Decision making in patients with chest pain and intermediate coronary stenosis remains difficult. In ...
King S B SB - - 1998
OBJECTIVES: We sought to compare outcomes of patients treated in the National Heart, Lung, and Blood Institute (NHLBI) Percutaneous Transluminal Coronary Angioplasty (PTCA) and New Approaches to Coronary Intervention (NACI) registries. BACKGROUND: Coronary angioplasty has numerous shortcomings. New devices for performing coronary interventions have been introduced in an effort to ...
Bocksch W - - 1998
In 103 patients with acute myocardial infarction, intracoronary ultrasound imaging (ICUS) was performed before and after percutaneous transluminal coronary angioplasty (PTCA) with a pre-PTCA success rate of 79 of 103 patients (76.7%), post-PTCA rate of 88 of 103 patients (85.4%), and a reversible subacute occlusion rate after initial ICUS of ...
Shibata Y - - 1998
A new guiding catheter for PTCA is described. In our department, 302 patients (405 lesions) underwent transradial coronary angioplasty using the 6 Fr Kimny guiding catheter since January 1996. The total engagement rate using the Kimny guiding catheter was 91.3% (370/405). The engagement rate after the modified Kimny guiding catheter ...
Meyer P - - 1998
This registry describes our preliminary experience with a novel introducing-catheter allowing direct percutaneous introduction of the 6F guiding catheter (G-C), minimizing the puncture size, preventing vessel scraping, and improving the pushability and torque response of the G-C. In 1995, 203 patients had sheathless PTCA, using this device. Eighty-five percent were ...
Miida T - - 1998
Most patients in acute myocardial infarction (AMI) undergo emergent coronary angiography (CAG). However, when to analyze lipoprotein profiles in AMI is not clear. To determine whether lipoprotein profiles change during catheterization, we measured serum lipid and apolipoprotein concentrations in 65 patients (51 men and 14 women) before and after catheterization. ...
Baim D S - - 1998
BACKGROUND: Previous directional coronary atherectomy (DCA) trials have shown no significant reduction in angiographic restenosis, more in-hospital complications, and higher 1-year mortality than conventional balloon angioplasty (percutaneous transluminal coronary angioplasty [PTCA]). DCA, however, has subsequently evolved toward a more "optimal" technique (larger devices, more extensive tissue removal, and routine postdilation ...
Haase K K - - 1998
AIMS: Recent randomized clinical trials have reported a reduction in restenosis with intracoronary stents and have suggested that this restenosis reduction is a result of the higher immediate luminal gain, in comparison to conventional percutaneous transluminal coronary angioplasty (PTCA). The hypothesis of this study is based on the assumption that ...
Antoniucci D - - 1998
OBJECTIVES: This prospective observational study was conducted to examine the apparent impact of a systematic direct percutaneous transluminal coronary angioplasty (PTCA) strategy on mortality in a series of 66 consecutive patients with acute myocardial infarction (AMI) complicated by cardiogenic shock, and to analyze the predictors of outcome after successful direct ...
Kanemitsu S - - 1998
It has been reported that serum lipoprotein(a) (Lp[a]) levels in patients with restenosis after percutaneous transluminal coronary angioplasty (PTCA) were significantly higher than in patients without restenosis. In this study, we evaluated the preventive effect of LDL apheresis on restenosis after PTCA in patients with hypercholesterolemia. For 10 patients who ...
Solomon A J - - 1998
PURPOSE: To review the available data on the treatment of chronic stable angina and formulate a rational approach to the use of pharmacologic therapy, percutaneous transluminal coronary angioplasty (PTCA), and coronary artery bypass graft surgery (CABG). DATA SOURCES: A MEDLINE search of English-language literature published between 1976 and 1996 and ...
Pust B - - 1998
The aim of the study was to find out whether in patients (n = 24) with one-vessel coronary artery disease, reversibility of related left ventricular (LV) wall motion abnormalities after successful percutaneous transluminal coronary angioplasty (PTCA) can be predicted by the immediate effect of calcium antagonist nicardipine. Dynamic quantitative left ...
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