Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0002962 (angina)
 21,142 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The purpose of the present study was to test the hypothesis that early detection of regional wall motion abnormalities (WMA) by 2D echocardiography (ECHO) accurately predicts further cardiac events in patients presenting with acute chest pain. A prospective analysis was performed in subjects admitted with the first presentation of acute chest pain and a non-diagnostic ECG for acute ST-elevation myocardial infarction. Patients with known coronary artery disease were excluded. All subjects were contacted by phone for a 30days follow-up regarding cardiac events defined as PCI/CABG, AMI, and death. In 132 consecutive patients (89 male, 43 female) complete data sets consisting of case history (H; abnormal: typical angina), ECG (abnormal: ST-depression, T-inversion, atypical ST-elevation, LBBB), serum markers (TnI; abnormal: elevation of troponin I=0.5 ng/ml), ECHO (abnormal: WMA) and follow-up were available. In 45 patients, 60 cardiac events occurred (three deaths, 24 AMI, 33 PCI/CABG). Positive (PPV; %) and negative predictive values (NPV; %) of ECHO were superior to all other diagnostic tests (P<0.05 each) for adverse cardiac events, evolving AMI or death, and superior to history and ECG for later need of revascularisation (PCI/ACVB). Multivariate analysis revealed that WMA in ECHO predict cardiac events independently of age, gender, and the common combination of investigations (H/ECG/TnI). A significant independent impact of ECHO was also determined for the prediction of AMI/death or PCI/CABG. The study shows that early 2D echocardiography provides superior prognostic information concerning the risk of subsequent complications in patients with acute chest pain and a non-diagnostic ECG for ST-elevation-AMI.
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PMID:Prognostic value of 2D echocardiography in patients presenting with acute chest pain and non-diagnostic ECG for ST-elevation myocardial infarction. 1212 75

Myocardial Blush Grade (MBG) is an angiographic method of assessing myocardial microcirculation and provides independent risk stratification among patients with normal TIMI 3 flow. Although the beneficial effect of abciximab on microvascular perfusion is well established, the efficacy of eptifibatide in the prevention of platelet aggregation and distal microembolization is less proven. After a pharmacologic shift by our institution towards the use of eptifibatide in patients with unstable angina presenting for PCI, we sought to evaluate our experience by retrospectively comparing the effect on myocardial perfusion between abciximab and eptifibatide following PCI in stable angina or acute coronary syndrome. Microcirculatory perfusion was reviewed in 101 consecutive patients (23 stable angina, 61 unstable angina, 17 non-q MI) undergoing PTCA/stenting. This comparison was between the last group of 51 patients who routinely received standard bolus and infusion of abciximab and the first group of 50 patients who began receiving standard bolus and infusion of eptifibatide. Baseline characteristics between the two groups were balanced, except for more patients with previous CABG in the eptifibatide group. Angiograms were evaluated by 2 blinded independent reviewers for MBG as follows: 0, no blush; 1, minimal blush; 2, moderate blush; and 3, normal blush. TIMI 3 flow was seen in 98 patients. MBG scores were not significantly different in the abciximab group (67% MBG 3; 31% MBG 2; 2.0% MBG 0 1) than in the eptifibatide group (58% MBG 3; 36% MBG 2; 6.0% MBG 0 1); p = 0.34. Patients with prior PTCA/stenting had lower MBG scores (0 2) compared to patients without prior PTCA (58% vs 31%; p = 0.03). There were significantly lower MBG scores in all patients with prior PTCA or CABG compared to patients without (55% vs 30%; p = 0.03). MBG scores significantly and inversely correlated with peak troponin I levels (r = -0.18, one-tailed p = 0.04). The similarity in myocardial perfusion between abciximab and eptifibatide suggests that both compounds are equally effective in reducing platelet aggregation and microembolization during mechanical reperfusion. Lower MBG scores in patients with prior PTCA or revascularization may be explained by irreversible microvascular dysfunction resulting from distal microembolization during the previous procedure. Lower MBG scores in patients with higher troponin I levels may reflect more frequent microemboli and microinfarcts during an ischemic event. Larger prospective studies need to be performed to validate these findings.
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PMID:Preservation of myocardial microcirculation during mechanical reperfusion for myocardial ischemia with either abciximab or eptifibatide. 1294 5

Neoangiogenesis, congestive heart failure and prevention of reoclusion after PCI represent the main targets of gene therapy (GT) in cardiology. Therapeutic angiogenesis can be used in advanced myocardial ischemia and in angina pectoris not suitable for the revascularization by cardiosurgery or by catheterization techniques. Heart failure is another indication of GT in cardiology. Modulation of calcium homeostasis, beta-adrenergic receptors and resistance of myocytes against apoptosis belongs to main forms of GT in this indication. Prevention of restenosis after PCI (with or without stent implantation) represents the third possible indication of GT. Conversion of ventricular myocytes into pacemaker cells using the gene potassium channel was described. Some benefit of GT can be expected in systemic and pulmonary hypertension. An optimal vector should be defined, as well as the optimal access (probably transmyocardial supplemented with intravenous application) and doses. GT seems to be safe and well tolerated by patients. Randomized, placebo control studies should be initiated for the final clinical assessment of this method.
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PMID:[Gene therapy in cardiovascular diseases]. 1460 40

The fibrinolytic system is closely related to several processes that are involved in restenosis. We previously showed that low PAI-1 plasma levels predicted restenosis. Recently, a different fibrinolytic inhibitor, TAFI, has been described. The aims of this study were to evaluate the relationship between pre-procedural plasma levels of TAFI and late angiographic restenosis and the interaction between TAFI and PAI-1.We prospectively studied 159 patients with stable angina who underwent successful elective angioplasty or stenting of de novo native coronary artery lesions. TAFI and PAI-1 antigen levels were measured in plasma samples drawn before the procedure. Follow-up coronary angiography was performed in 92% of patients. There was a significant correlation between pre-procedural TAFI levels and 6-month % diameter stenosis (DS) (r = 0.21; p = 0.013). The overall angiographic restenosis rate (DS>50%) was 31%. Pre-procedural TAFI levels were significantly higher in patients with restenosis (108 +/- 33% versus 94+/-30%, p = 0.011). Restenosis rates for patients in the upper tertile of TAFI levels were 2-fold higher than for those in the lowest tertile (45% versus 22%; p = 0.016). A combination of high TAFI and low PAI-1 levels identified patients at the highest risk of restenosis (53%) compared to 14% in patients with low TAFI and high PAI-1 levels; p = 0.027. In conclusion, pre-procedural plasma TAFI antigen levels identify patients at increased risk for restenosis after PCI.
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PMID:Thrombin-activatable fibrinolysis inhibitor (TAFI): a novel predictor of angiographic coronary restenosis. 1465 55

Acute coronary syndromes (ACS) without persistent ST-segment elevation are the main cause of hospitalization, morbidity and mortality. The objective of this study was to compare clinical and angiographic parameters as well as in-hospital results of treating 307 consecutive patients with ACS without persistent ST-segment elevation with either PCI or CABG. Inclusion criteria were: rest angina within the last 24 hours, ST-segment depression (> 0.5 mm), T-wave inversion (> 1 mm) in at least two leads, positive serum cardiac markers. PCI was performed in 75.9% of patients and 24.1% of patients underwent CABG. Both groups did not differ as to age, sex, history of diabetes, arterial hypertension, heart failure, smoking and ejection fraction. Positive troponin was significantly more frequent in the PCI group. 51% of PCI patients and 80% of CABG patients had complete revascularization (p = 0.00001). Independent predictors of in-hospital death in the CABG group were: inability to determine culprit vessel during coronary angiography due to lesions' severity (OR 13.65; 95% CI 9.40-15.20; p = 0.007) and heart failure (OR 15.58; 95% CI 12.29-18.01; p = 0.003). In the PCI group these independent predictors were: Braunwald's IIIC unstable angina (OR 5.48; 95% CI 3.10-7.17; p = 0.04) and diabetes (OR 2.22; 95% CI 1.07-3.90; p = 0.003). In-hospital mortality rate was significantly higher in the CABG group (8.1% vs 1.7% p < 0.01). Patients with multivessel coronary artery disease and ACS without ST-segment elevation treated with PCI have better in-hospital outcome than patients assigned to CABG, but the rate of complete revascularization is lower.
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PMID:[In hospital observation of patients with acute coronary syndrome without ST elevation and multivessels coronary artery disease treated with early invasive strategy. Comparison of results of percutaneous coronary intervention and coronary artery by-pass grafting]. 1567 65

Prompted by a case where a patient (with no risk factors, and single vessel disease) developed angina pectoris after previous blunt chest trauma, we searched Medline for blunt chest trauma and myocardial ischaemia. We found 77 cases describing AMI after blunt chest trauma, but only one reporting angina pectoris. We focused on the age and sex distribution, type of trauma, the angiography findings and the time interval between the trauma and the angiography. The age distribution was atypical, compared to AMI in general; 82% of the patients with AMI after blunt chest trauma were less than 45 years old, and only 2.5% more than 60 years old. The most common trauma was a road traffic accident, and the LAD was the vessel most often affected. Angiography revealed 12 cases with completely normal vessels, which might be due to spasm or recanalisation; 31 cases showed occlusion but no atherosclerosis, which strongly suggested a causal relation between the trauma and subsequent occlusion. AMI should therefore be considered in patients suffering from chest pain after blunt chest trauma. Because traumatic AMI might often be the result of an intimal tear or dissection, thrombolytic therapy might worsen the situation and acute PCI must be considered preferable. It seems likely that lesser damage could lead to longer-term stenosis we suspect that this sequence is grossly under-reported. This could have medico-legal implications.
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PMID:Prior blunt chest trauma may be a cause of single vessel coronary disease; hypothesis and review. 1596 88

Acute coronary syndromes (ACS) without ST elevation (which include unstable angina [UA] and non ST elevation MI [NSTEMI]) are caused by dynamic changes in the atherosclerotic plaque and coronary blood flow. To determine characteristics, in-hospital outcome and management of patients with ACS without ST elevation. The total of 502 patients were enrolled. Inclusion criteria were: rest angina within the last 24 hours, ST-segment deviation (>0,05 mV), T-wave inversion (>0,1 mV) in at least two leads, positive serum cardiac markers. There were 63,3% of patients with Braunwald's IIIB UA and 6,8% with IIIC UA, 29,9% of patients were diagnosed with NSTEMI. All patients were diagnosed invasively with subsequent revascularization (PCI-73,1% or CABG-16,7%) if apprioppriate. 1,6% of patients underwent PCI and elective CABG and 16,7% of patients were treated conservatively. Overall mortality was 2,98%--PCI subgroup (N = 367) 1,36%, CABG subgroup (N = 84) 8,33% and conservative subgroup (N = 43) 6,07%. Non-fatal myocardial infarction (MI) complicated the hospital course in 0,99%, 0,27%, 3,57%, and 2,32% of patients respectively. 1,4%, 0,54%, 6% and 0% of patients respectively had fatal MI. Early invasive strategy in patients with ACS without ST elevation is efficacious method of treatment.
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PMID:[Early invasive strategy in acute coronary syndromes without persistent ST-segment elevation. Baseline characteristics and in-hospital outcome: Zabrze Registry]. 1673 2

Spontaneous coronary artery dissection (SCAD) is a rare condition that usually occurs in relatively young patients who are predominantly female. Seldom it could be a cause of acute myocardial ischemia leading to a sudden cardiac death. SCAD consists of intramural hematoma formation or, rarely, intimal tears that initiate and propagate the dissection in the vessel wall. In rare cases, the SCAD occurs in male patients. We report the case of a 56-year-old man with acute myocardial infarction who was successfully treated via systemic thrombolysis in a peripheral hospital. Associated conditions were thrombosis of right femoral artery in the past and high platelet count (800,000/mm3). After 1 month, elective coronary angiography revealed a very diffuse spiral dissection of the left anterior descending artery; hence, our choice of medical treatment consisted of double oral antiplatelet therapy (clopidogrel 75 mg plus aspirin 325 mg once daily). After a 2-year follow-up, there was absence of both angina and myocardial ischemia and there was a decrease in platelet count. Many strategies could be considered in patients with SCAD, such as PCI, bypass surgery, or conservative medical management. In general, the long-term prognosis of patients with SCAD is considered favorable if they survive the acute phase.
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PMID:Case report: a very large dissection in the left anterior descending coronary artery of a 56-year-old man. 1717 72

To evaluate current compliance with recommendations for medical therapy in patients with coronary artery disease (CAD), the relation between previous revascularization and use of guideline-recommended therapies was investigated. From 5,400 outpatient practices in 44 countries, we compared baseline characteristics and medical therapy of 40,450 patients with documented CAD (all with previous myocardial infarction, percutaneous coronary intervention [PCI], coronary artery bypass grafting [CABG], or angina pectoris) by previous revascularization status. Approximately 33% of patients had previous CABG, 33% had previous PCI, and 33% had no previous revascularization. Patients with previous CABG were older and often men and diabetic. Patients with previous PCI were the youngest. Guideline-recommended medical therapy use was significantly higher in those with previous revascularization. Antiplatelet therapy in medically managed patients was 80% versus 86% and 91% for those with previous CABG or PCI, respectively. Use of any lipid-lowering agent in those with previous CABG or PCI was 86% in the 2 groups versus 70% in patients who were medically managed. Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers were used in similar ratios among groups. Previous revascularization appears to be associated with better use of guideline-recommended medical treatment. These trends were similar for patients from the United States versus everywhere else. In conclusion, use of evidence-based, guideline-recommended therapies in outpatients with CAD needs to improve, especially in medically managed patients.
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PMID:Comparisons of guideline-recommended therapies in patients with documented coronary artery disease having percutaneous coronary intervention versus coronary artery bypass grafting versus medical therapy only (from the REACH International Registry). 1747 44

PCI is effective in reducing symptoms in patients with stable angina pectoris, but it does not improve prognosis. In earlier trials PCI has been related to more procedure-related complications among women, but these gender differences are not as pronounced in recent studies. In acute coronary syndromes there is no evidence of gender differences regarding the benefit of primary PCI for ST-segment elevation myocardial infarction. However, several trials of unstable angina and non-ST-segment elevation myocardial infarction indicate that compared with men, women do not get the same benefit of a routine, early, invasive treatment strategy.
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PMID:[The effect of percutaneous coronary intervention in women with ischaemic heart disease]. 1759 39


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