نتایج جستجو برای: myocardial ischaemia
تعداد نتایج: 163273 فیلتر نتایج به سال:
BACKGROUND Amino terminal pro-B-type natriuretic peptide (NT-proBNP) is a sensitive marker of ventricular dysfunction. Exercise causes an increase in the secretion of NTproBNP, and with myocardial ischaemia the increase is more pronounced. This increase has been found to improve the diagnostic sensitivity of the stress ECG in diagnosing myocardial ischaemia in subjects with normal ventricular f...
We have studied the incidence and duration of perioperative myocardial ischaemia using ambulatory ECG monitoring in 100 patients undergoing transurethral surgery, who were allocated randomly to receive either general or spinal anaesthesia. The overall incidence of myocardial ischaemia increased from 18% to 26% between the preoperative and postoperative periods. Patients with ischaemic heart dis...
Despite the growing evidence for the positive predictive value of depressed baroreflex sensitivity and/or reduced heart rate variability after myocardial infarction, the mechanisms involved in these autonomic alterations are not fully understood. Specifically, the possible influence of residual ischaemia has not been assessed. To address this problem we studied the spectral analysis of heart ra...
OBJECTIVES To compare the long term prognosis of patients having silent versus symptomatic ischaemia during dobutamine stress echocardiography (DSE). DESIGN Observational study. SETTING Tertiary referral centre. PATIENTS 931 patients who experienced stress induced myocardial ischaemia during DSE. RESULTS Silent ischaemia was present in 643 of 931 patients (69%). The number of dysfunctio...
The goal of anaesthetic management in patients with coronary artery disease (CAD) is the prevention of perioperative myocardial ischaemia. This approach is based on the assumption that sustained intraoperative ischaemia may precipitate postoperative myocardial infarction (MI) with its attendant complications. This presentation will review available information regarding perioperative ischaemia,...
The myocardial injury that occurs following a period of ischaemia and reperfusion is well recognised and the underlying mechanisms have been extensively investigated in healthy myocardial tissues; however, the influence of the risk factors associated with cardiovascular diseases on ischaemia/reperfusion injury remains unclear. In this article, the present knowledge on how clinical pathologies s...
BACKGROUND B-type natriuretic peptide (BNP) and the inactive amino-terminal pro-B-type natriuretic peptide (NTproBNP) have a prognostic value in heart failure and in myocardial infarction. There has been some evidence that BNP and NT-proBNP can be used in the diagnosis of myocardial ischaemia by improving the sensitivity of exercise- stress testing. OBJECTIVE To observe the relationship betwe...
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