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Revista Colombiana de Cardiología
Article . 2017 . Peer-reviewed
License: CC BY NC ND
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Utilidad del strain sistólico pico longitudinal bidimensional en pacientes con diagnóstico clínico de infarto del miocardio sin elevación del ST

Authors: Salazar-Marín, Santiago; Valencia, Johanna Marcela; Hernández-Vásquez, Oscar Mauricio; Estrada, Jorge Mario;

Utilidad del strain sistólico pico longitudinal bidimensional en pacientes con diagnóstico clínico de infarto del miocardio sin elevación del ST

Abstract

Resumen: Objetivos: evaluar la utilidad del strain sistólico pico longitudinal bidimensional para detectar enfermedad coronaria significativa en pacientes con diagnóstico de infarto agudo del miocardio sin elevación del ST y su capacidad para identificar la arteria responsable del evento agudo. Métodos: estudio observacional descriptivo y transversal realizado entre marzo y noviembre de 2015 en pacientes con diagnóstico clínico de infarto agudo del miocardio sin elevación del ST, a quienes se les evaluó el strain sistólico pico longitudinal bidimensional del ventrículo izquierdo, previo a la angiografía coronaria. Resultados: se evaluó el strain longitudinal en 28 pacientes que cumplieron con los criterios de selección. Por análisis de curvas ROC, se identificó un punto de corte para el strain global ⥠-18,8% con sensibilidad del 85% y especificidad del 75% para reconocer presencia de enfermedad coronaria angiográficamente significativa. Un punto de corte ⥠-17,8% de strain global, identificó lesiones significativas con especificidad del 100%. Para el análisis segmentario se estableció un punto de corte de ⥠3 segmentos con strain ⥠-14%, encontrando una sensibilidad de 90% y una especificidad 87,5% para diagnóstico de enfermedad coronaria significativa. Conclusiones: la técnica ecocardiográfica evaluada, aplicada a pacientes con diagnóstico clínico de infarto del miocardio sin elevación del ST, mostró su utilidad para identificar enfermedad coronaria significativa, pero no permitió hallar el vaso culpable del evento agudo. Abstract: Objectives: To evaluate the usefulness of two-dimensional longitudinal peak systolic strain to detect significant coronary disease in patients with a diagnosis of acute myocardial infarction without ST elevation, and its ability to identify the artery responsible for the coronary event. Methods: A descriptive, observational, and cross-sectional study was conducted between March and November 2015 on patients with a clinical diagnosis of acute myocardial infarction without ST elevation, and on whom the two-dimensional longitudinal peak systolic strain of the left ventricle was evaluated prior to coronary angiography. Results: The longitudinal strain was evaluated in 28 patients who fulfilled selection criteria. For the ROC curve analysis, a cut-off point of ⥠-18.8% for the overall strain was identified, with a sensitivity of 85% and a specificity of 75% to recognise the presence of angiographically significant coronary disease. A cut-off point of ⥠-17.8% of overall strain identified significant lesions, with a specificity of 100%. For the segmental analysis, a cut-off point of ⥠3 segments with a strain ⥠-14% was established, finding a sensitivity of 90% and a specificity of 87.5% for the diagnosis of significant coronary disease. Conclusions: The evaluated echocardiographic technique, when applied to patients with a clinical diagnosis of myocardial infarction without ST elevation, was shown to be useful in identifying significant coronary disease, but was unable to find the vessel responsible for the acute event. Palabras clave: Técnicas de imagen cardíaca, Ecocardiografía bidimensional, Síndrome coronario agudo, Enfermedad de arterias coronarias con infarto de miocardio, Contracción miocárdica, Keywords: Cardiac imaging techniques, two-dimensional echocardiography, Acute coronary syndrome, Coronary artery diseases with myocardial infarction, Myocardial contraction

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Keywords

Contracción miocárdica, Myocardial contraction, Enfermedad de arterias coronarias con infarto de miocardio, Coronary artery diseases with myocardial infarction, Cardiac imaging techniques, two-dimensional echocardiography, Técnicas de imagen cardíaca, RC666-701, Diseases of the circulatory (Cardiovascular) system, Síndrome coronario agudo, Acute coronary syndrome, Ecocardiografía bidimensional

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
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