Evaluation of Postinfarction Viable Myocardium at Jeopardy by Dobutamine Echocardiography and Myocardial Contrast Echocardiography
| Autor: | Daniela Cavallari, Paolo Rizzon, Sabino Iliceto, Leonakda Galiuto, Alfredo Marchese |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
medicine.medical_specialty
business.industry Dobutamine stress echocardiography Collateral circulation Myocardial contrast echocardiography Contractility Left coronary artery medicine.artery Internal medicine Right coronary artery Cardiology Medicine Radiology Nuclear Medicine and imaging Dobutamine cardiovascular diseases Cardiology and Cardiovascular Medicine business Perfusion medicine.drug |
| Zdroj: | Echocardiography. 11:337-342 |
| ISSN: | 1540-8175 0742-2822 |
| DOI: | 10.1111/j.1540-8175.1994.tb01376.x |
| Popis: | Both myocardial contrast echocardiography (MCE), obtained by intracoronary injection of sonicated Ioxaglate, and dobutamine echocardiography (DE) were performed before and after percutaneous transluminal coronary angioplasty (PTCA) in a patient with recent myocardial infarction, an occluded infarct related artery (IRA) and collateral flow. An opposite response to low and high dose dobutamine (increase and decrease in regional contractility, respectively) suggested the presence of viable myocardium at jeopardy in the infarcted area. This myocardial area was exclusively perfused by collateral circulation (demonstrated by MCE) supplied by an angiographically normal left coronary artery. After PTCA, right coronary artery flow was re-established and angiographically demonstrated collateral flow disappeared. MCE showed a normal right coronary artery perfusion bed and relevant overlap areas after left coronary MCE injection. Dobutamine echocardiography performed after PTCA demonstrated persistence of viability, but disappearence of myocardial ischemia. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text