[The diagnostic value of measuring the momentary blood flow reserve versus non-invasive methods to detect myocardial ischemia in assessing the functional significance of borderline coronary artery stenoses]. / Diagnosticheskaia tsennost' izmereniia momental'nogo rezerva krovotoka po sravneniiu s neinvazivnymi metodami vyiavleniia ishemii miokarda pri otsenke funktsional'noi znachimosti pogranichnykh stenozov koronarnykh arterii.
Ter Arkh
; 89(4): 15-21, 2017.
Article
em Ru
| MEDLINE
| ID: mdl-28514394
ABSTRACT
AIM:
To estimate the diagnostic value of measuring the momentary blood flow reserve (MBFR) versus the surrogate non-invasive standard (SNS) for myocardial ischemia verification (MIV) (a combination of stress echocardiography and single-photon emission computed tomography). SUBJECTS ANDMETHODS:
The investigation enrolled 50 patients with stable angina in the presence of chronic coronary heart disease (CHD) or suspected CHD, in whom coronary angiography (CA) revealed borderline coronary stenoses (50-70% lumen diameters). The examination algorithm had two options. In one option, when included in the study, patients had already CA results not older than 1 month, and MBFR was measured 4-7 days after non-invasive stress tests. In the other option, MBFR in the area of borderline coronary artery stenosis was measured simultaneously with CA; and the noninvasive stress tests were carried out in the following week. A total of 74 coronary stenoses were examined.RESULTS:
SNS for MIV was positive in 14 (28%) patients. When comparing with the non-invasive methods of myocardial ischemia verification, the area under the ROC curve for MBFR was 0.961±0.019 (95% confidence interval, 0.888-0.992). The optimal cut-point was 0.92, which is corresponded by a sensitivity of 100% and a specificity of 84%.CONCLUSION:
When compared with SNS for MIV, the method for measuring MBFR has a high diagnostic accuracy.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Doença da Artéria Coronariana
/
Angiografia Coronária
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Isquemia Miocárdica
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Estenose Coronária
/
Reserva Fracionada de Fluxo Miocárdico
Idioma:
Ru
Ano de publicação:
2017
Tipo de documento:
Article