Edit Information - Saric
| |Edit Information |
|Abstract Submitter: |Doctor Anis Ather - ather_anis@ |
| | |
|Event: |Euroecho 2007 |
|Title: |novel use of myocardial contrast echocardiography in critically ill patients with |
| |non-cardiac diagnoses and mild to moderate troponin elevation (ECHO-IN-ILL Trial) |
|Evaluation Topic: |04.00 - Contrast echo |
|Acronym Abbreviation: |ECHO-IN-ILL |
|Acronym: |Myocardial Contrast Echocardiography in Critically Ill Patients |
|On Behalf of: | |
|Options: |Young Investigator Award (YIA) |
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|Abstract Authors | |Edit Authors |
|A. Anis1, D. Leticia2, VN. Dhruva3, M. Saric4, M. Klapholz4 - (1) Scotch Plains, United States of America (2) Newark, United |
|States of America (3) Union, United States of America (4) New York, United States of America |
| |
|Abstract Content |97% |Edit Content |
|Purpose: To determine the feasibility of rest and stress myocardial contrast echocardiography (MCE) in intensive care units (ICU) |
|patients admitted with non-cardiac causes and moderate TnI elevation, in identifying the incidence of obstructive coronary artery |
|disease (CAD) in this patient population. |
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|Methods : Between 09/2006-05/2007, 20 patients admitted to the ICU with non-cardiac diagnoses and moderate TnI elevations (peak |
|between 0.4–10 ng/dL) were studied . Real-time rest and Stress (dipyridamole 0.56 mg/kg) imaging with low mechanical-index (MI) |
|was used for wall motion analysis (WMA) and MCE with continuous contrast (perflutren lipid microsphere) infusion, in apical 2-, |
|3-, and 4-chamber views. "Bursting" with high MI was used to "clear" the myocardium of microbubbles and subsequent MCE imaging was|
|used for assessment of contrast replenishment. Using 16-segment model, myocardial contrast replenishment was graded as: 1 = |
|normal, 2 = reduced contrast enhancement relative to other regions. The later was further classified into reversible or |
|irreversible defects. Two physicians who were blinded to each other and clinical data made WMA and qualitative assessment of |
|perfusion. Obstructive CAD diagnosis was based on reversible wall motion and/or perfusion abnormalities. Patients with Creatinine |
|(Cr) ≥ 3.0 mg/dL, hypotension, active ischemia, recent revascularization, implantable defibrillator or pacemaker and atrial |
|fibrillation were excluded. |
| |
|Results : 8/20( 40%) patients were males. Mean age was 57.7 ± 17.8 years, while the mean TnI, CPK, MB%, EF, Cr and APACHE II |
|scores were1.86 ± 1.4 ng/dL, 860.75 ± 1894 u/L, 1.24 ± 1.43%, 54 ± 14%, 1.25 ± 0.62 mg/dL and 18 ± 8.5, respectively. 14/20 (70%) |
|had hypertension, 6/20 (30%) had diabetes, 9/20 (45%) had hyperlipidemia and 12/20 (60%) had history of smoking. 4/320 analyzed |
|segments were considered un-interpretable for perfusion. 34/316 segments showed abnormal perfusion (12= fixed, 22 = reversible). |
|9/20 (45%) patients showed evidence of obstructive CAD. 3/20 patients had global hypokinesis with no perfusion abnormality and |
|were considered non-ischemic. In-hospital mortality was 0%. MCE was easily performed in the ICU setting and was well tolerated. |
| |
|Conclusions : Bedside MCE represents a new diagnostic tool that can be used in critically ill patients. It may help determine |
|whether the often-observed troponin elevation in these patients is related to obstructive CAD. The incidence of obstructive CAD in|
|ICU patients with non-cardiac diagnoses may be higher that previously reported. |
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