The value of a simplified approach to end-systolic volume measurement for assessment of left ventricular contractile reserve during stress-echocardiography
| Autor: | Natalia M. Quevedo, Ana Cristina Camarozano, Marco Antonio Rodrigues Torres, Eugenio Picano, Tonino Bombardini, Thaís Franciele Texeira, Clarissa Carmona de Azevedo Bellagamba, Michele De Nes, Carolina Bertoluci, Altair Ivory Heidemann Junior, Quirino Ciampi |
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| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty Systole Vasodilator Agents Coronary Artery Disease 030204 cardiovascular system & hematology Ventricular Function Left 030218 nuclear medicine & medical imaging Coronary artery disease 03 medical and health sciences 0302 clinical medicine Predictive Value of Tests Dobutamine Internal medicine medicine Stress Echocardiography Humans Radiology Nuclear Medicine and imaging Prospective Studies End-systolic volume Aged Heart Failure business.industry Reproducibility of Results Stroke Volume Dipyridamole Middle Aged medicine.disease Blood pressure Italy Adrenergic beta-1 Receptor Agonists Parasternal line Heart failure Cardiology Feasibility Studies Female Cardiology and Cardiovascular Medicine business Echocardiography Stress medicine.drug |
| Zdroj: | The International Journal of Cardiovascular Imaging. 35:1019-1026 |
| ISSN: | 1573-0743 1569-5794 |
| DOI: | 10.1007/s10554-019-01599-5 |
| Popis: | The peak stress/rest ratio of left ventricular (LV) elastance, or LV force, is a load-independent index of left ventricular contractile reserve (LVCR) with stress echo (SE). To assess the accuracy of LVCR calculated during SE with approaches of different complexity. Two-hundred-forty patients were referred to SE for known or suspected coronary artery disease or heart failure and, of those, 200 patients, age 61 ± 15, 99 females, with interpretable volumetric SE were enrolled. All readers had passed the upstream quality control reading for regional wall motion abnormality (RWMA) and end-systolic volume (ESV) measurement. The employed stress was dipyridamole (0.84 mg, 6 min) in 86 (43%) and dobutamine (up to 40 mcg/kg/min) in 114 (57%) patients. All underwent SE with evaluation of RWMA and simultaneous LVCR assessment with stress/rest ratio of LV force (systolic blood pressure by cuff sphygmomanometer/ESV). ESV was calculated in each patient by two of three methods: biplane Simpson rule (S, in 100 patients), single plane area-length (AL, apical four-chamber area and length, in 100 patients), and Teichholz rule (T, from parasternal long axis and/or short axis view, in 200 patients). RMWA were observed in 54 patients. Success rate for ESV measurement was 76% (100/131) for S, 92% (100/109) for AL, and 100% (240/240) for T. There were 100 paired measurements (rest and stress) with S versus T, and 100 with AL versus T. The analysis time was the shortest for T (33 ± 8 s at rest, 34 ± 7 s at stress), intermediate for AL (70 ± 22 s at rest 67 ± 21 s at stress), and the longest for S (136 ± 24 at rest 129 ± 27 s at stress, p |
| Databáze: | OpenAIRE |
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