Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0022116 (ischemia)
 91,303 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To clarify the prognostic implications of exercise induced silent myocardial ischemia (SMI) in patients with angina pectoris, the clinical characteristics and long-term prognosis after coronary angiography in 379 patients without prior myocardial infarction were investigated. According to the results of treadmill testing and/or Tl-201 exercise imaging after medical treatment, 50 patients with negative for ischemia were classified as control group, 110 patients with exercise induced SMI were classified as the SMI group, and 187 patients with painful ischemia formed the PI group. Thirty-two patients were excluded because of inconclusive exercise results. Single vessel disease and vasospastic angina were more frequent in the control group than in the SMI and PI groups. But there were no differences in baseline characteristics and extent of coronary lesions between the latter two groups. Heart rate, systolic blood pressure and rate-pressure product at end point in treadmill testing were higher in the control and SMI groups than in the PI group. The mean follow-up period was 4.8 years, and follow-up was completed in every case. Cardiac events, including cardiac death, nonfatal myocardial infarction and readmission from severe angina, occurred in 25 patients of the SMI group, 43 of the PI group and 7 of the control group. Cumulative cardiac event curves did not show any statistically significant difference between the SMI and PI groups. We conclude the presence or absence of angina during exercise test is no longer the principal prognostic index for determining a patient's risk of cardiac events.
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PMID:[Prognostic implications of exercise induced silent myocardial ischemia in patients with angina pectoris]. 192 5

To know whether the pathogenesis of impending myocardial infarction(IMI) could be predicted by the direction of ST segment shifts during an ischemic chest pain, we studied 62 patients with IMI and undergoing emergent coronary angiography(CAG). They were selected from a consecutive number of 474 patients with unstable angina. IMI was defined when patients had more than 2 episodes of chest pain at rest under intensive pharmacological interventions after their CCU admission, and at least one of those was not relieved by nitroglycerin given intravenously. They were divided into 2 groups according to ST segment shifts during chest pain; 35 patients with ST elevation (G-1) and 27 patients with ST depression (G-2). The time of CAG was individually determined in each patient according to the severity of illness. Those with acute MI within 3 months before the study and 24 hours following the chest pain just before CAG were excluded from the study. New onset angina accounted for 49% in G-1 and 4% in G-2(p less than 0.01). Average history length of IMI, frequency of symptoms after CCU admission, and interval from the last symptom to CAG were similar in each groups. Single vessel disease was more predominant in G-1 than in G-2 (54% vs 11% p less than 0.01). Intracoronary thrombus(IT) in an ischemia related artery(IRA) was found in 97% of G-1 and 22% of G-2(p less than 0.001), while complex lesions(CL) proposed by Ambrose as another genesis of IMI were in 26% of G-1 and 74% of G-2(p less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Clinical significance of ST segment shifts during chest pain in predicting the pathogenesis of impending myocardial infarction]. 202 79