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Prevalence, characteristics, and risk stratification of electrocardiographic and symptomatic silence of myocardial ischemia despite scintigraphically evidenced ischemia in symptomatic patients presenting with severe coronary artery stenosis.
Clin Cardiol. 1995 Mar; 18(3):150-6.CC

Abstract

Symptoms of angina pectoris and transient ST-segment depression are most commonly used to evidence acute myocardial ischemia during exercise testing. However, the diagnostic accuracy of either or both criteria in relation to clinical characteristics and the patient's exercise response has been a subject of controversy. The prevalence and severity of symptoms of angina pectoris and/or ST-segment depression were studied prospectively in 147 consecutive patients with a history of daily angina pectoris, scintigraphic evidence of exercise-induced myocardial ischemia, and coronary artery stenosis > 75%. Logistic regression analysis was applied to determine absence of any or both criteria by the clinical characteristics or exercise response of the patient. During exercise testing, ST-segment response failed to prove scintigraphically evidenced myocardial ischemia in 14/147 patients (10%) and 35/147 patients (24%) when ST-segment depression > or = 0.1 in either > or = 1 or > or = 2 ECG leads was chosen. Symptoms of angina pectoris were found to be absent in 69/147 patients (47%). Only 58 patients (40%) suffered from angina and met the ECG criterion at the time of scintigraphic myocardial ischemia. Absence of ST-segment depression was best predicted by clinical variables such as large myocardial infarction (increase: 2.6 times, p = 0.007), number of stenoses < or = 2 (2.0 times, p = 0.023), and presence of diabetes mellitus (4.3 times, p = 0.035). Painless myocardial ischemia was determined by blood response to exercising. Thus, a double product > 23 increased the risk of painless myocardial ischemia by 1.5 times (p = 0.017).(

ABSTRACT

TRUNCATED AT 250 WORDS)

Authors+Show Affiliations

Department of Cardiology, University Clinic Freiburg, Germany.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

7743686

Citation

Zehender, M, et al. "Prevalence, Characteristics, and Risk Stratification of Electrocardiographic and Symptomatic Silence of Myocardial Ischemia Despite Scintigraphically Evidenced Ischemia in Symptomatic Patients Presenting With Severe Coronary Artery Stenosis." Clinical Cardiology, vol. 18, no. 3, 1995, pp. 150-6.
Zehender M, Kasper W, Krause T, et al. Prevalence, characteristics, and risk stratification of electrocardiographic and symptomatic silence of myocardial ischemia despite scintigraphically evidenced ischemia in symptomatic patients presenting with severe coronary artery stenosis. Clin Cardiol. 1995;18(3):150-6.
Zehender, M., Kasper, W., Krause, T., Granzow, H., Olschewski, M., Moser, E., & Just, H. (1995). Prevalence, characteristics, and risk stratification of electrocardiographic and symptomatic silence of myocardial ischemia despite scintigraphically evidenced ischemia in symptomatic patients presenting with severe coronary artery stenosis. Clinical Cardiology, 18(3), 150-6.
Zehender M, et al. Prevalence, Characteristics, and Risk Stratification of Electrocardiographic and Symptomatic Silence of Myocardial Ischemia Despite Scintigraphically Evidenced Ischemia in Symptomatic Patients Presenting With Severe Coronary Artery Stenosis. Clin Cardiol. 1995;18(3):150-6. PubMed PMID: 7743686.
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TY - JOUR T1 - Prevalence, characteristics, and risk stratification of electrocardiographic and symptomatic silence of myocardial ischemia despite scintigraphically evidenced ischemia in symptomatic patients presenting with severe coronary artery stenosis. AU - Zehender,M, AU - Kasper,W, AU - Krause,T, AU - Granzow,H, AU - Olschewski,M, AU - Moser,E, AU - Just,H, PY - 1995/3/1/pubmed PY - 1995/3/1/medline PY - 1995/3/1/entrez SP - 150 EP - 6 JF - Clinical cardiology JO - Clin Cardiol VL - 18 IS - 3 N2 - Symptoms of angina pectoris and transient ST-segment depression are most commonly used to evidence acute myocardial ischemia during exercise testing. However, the diagnostic accuracy of either or both criteria in relation to clinical characteristics and the patient's exercise response has been a subject of controversy. The prevalence and severity of symptoms of angina pectoris and/or ST-segment depression were studied prospectively in 147 consecutive patients with a history of daily angina pectoris, scintigraphic evidence of exercise-induced myocardial ischemia, and coronary artery stenosis > 75%. Logistic regression analysis was applied to determine absence of any or both criteria by the clinical characteristics or exercise response of the patient. During exercise testing, ST-segment response failed to prove scintigraphically evidenced myocardial ischemia in 14/147 patients (10%) and 35/147 patients (24%) when ST-segment depression > or = 0.1 in either > or = 1 or > or = 2 ECG leads was chosen. Symptoms of angina pectoris were found to be absent in 69/147 patients (47%). Only 58 patients (40%) suffered from angina and met the ECG criterion at the time of scintigraphic myocardial ischemia. Absence of ST-segment depression was best predicted by clinical variables such as large myocardial infarction (increase: 2.6 times, p = 0.007), number of stenoses < or = 2 (2.0 times, p = 0.023), and presence of diabetes mellitus (4.3 times, p = 0.035). Painless myocardial ischemia was determined by blood response to exercising. Thus, a double product > 23 increased the risk of painless myocardial ischemia by 1.5 times (p = 0.017).(ABSTRACT TRUNCATED AT 250 WORDS) SN - 0160-9289 UR - https://www.unboundmedicine.com/medline/citation/7743686/Prevalence_characteristics_and_risk_stratification_of_electrocardiographic_and_symptomatic_silence_of_myocardial_ischemia_despite_scintigraphically_evidenced_ischemia_in_symptomatic_patients_presenting_with_severe_coronary_artery_stenosis_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&amp;sid=nlm:pubmed&amp;issn=0160-9289&amp;date=1995&amp;volume=18&amp;issue=3&amp;spage=150 DB - PRIME DP - Unbound Medicine ER -