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PubMed · 2058098

[Angina pectoris revisited].

M Stejfa
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Abstract

Based on data in the literature and his own experience, the author presents modern views on angina pectoris. He discusses anamnestic signs of typical and atypical angina and non-anginous chest pain. He mentions the pathogenesis and clinical picture of stable angina (secondary and mixed angina, syndrome X), unstable angina (mixed and primary angina) and silent ischaemia. As to examinations, he emphasizes in addition to the case-history the importance of the objective finding and stress tests. On the latter indications for invasive examinations are based. The author recapitulates treatment, prognosis an assessment.

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BibTeXRIS

M Stejfa. 1991. [Angina pectoris revisited].. https://pubmed.ncbi.nlm.nih.gov/2058098/

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Effect of a hypoglycemic agent on ischemic preconditioning in patients with type 2 diabetes and stable angina pectoris.

OBJECTIVE: Ischemic preconditioning is an increased tolerance to myocardial ischemia during the second of two consecutive exercise tests. ATP-sensitive K(+) channel blockers, such as glinides and sulfonylurea drugs, can induce loss of ischemic preconditioning. This study aimed to investigate the effects of repaglinide, a hypoglycemic agent with an affinity for myocardial ATP-sensitive K (+)channels, on the results of consecutive exercise tests in patients with diabetes and multivessel coronary artery disease. METHODS: Forty-two patients with type 2 diabetes and chronic stable angina pectoris, and two-vessel or three-vessel disease participated in this study. The patients underwent two consecutive treadmill exercise tests (phase 1). On the day after these exercise tests, 2 mg of oral repaglinide was given to the patients. One week later, two exercise tests were repeated consecutively (phase 2). RESULTS: All patients achieved 1.0-mm ST-segment depression during the four exercise tests (T1, T2, T3, and T4). In phase 2, seven patients improved in time to onset of 1.0-mm ST-segment depression. The worsening of the time to onset of 1.0-mm ST-segment depression in phase 2 demonstrated ischemic preconditioning block in 83.3% of patients (P=0.0001). Even the postexercise electrocardiographic parameters (ST-segment depression morphology and magnitude and arrhythmias) were significantly different between the groups with and without pharmacologic ischemic preconditioning block (P=0.031). CONCLUSIONS: Repaglinide, an oral hypoglycemic agent with ATP-sensitive K(+) channel-blocker activity, eliminated the myocardial ischemic preconditioning in patients with coronary disease and diabetes.

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