Clinical trial NCT00487812: Low-Dose Dobutamine Tc-99m-Mibi Gated SPECT to Predict Left Ventricular Remodelling in Patients Reperfused in the Acute Phase of MI
Official title: Prediction of Left Ventricular Remodelling in Patients Treated by Angioplasty in the Acute of Phase of a First Myocardial Infarction by Low-Dose Dobutamine Tc-99m-Mibi Gated SPECT
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Ischemic Heart Disease
Myocardial Infarction
Keywords: Acute myocardial infarction
left ventricular remodelling
SPECT imaging
Lead sponsor: University Hospital, Clermont-Ferrand
Sponsor class: OTHER
First posted: 2007-06-19
Enrollment: 50
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NON_RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: Left myocardial infarction (MI), has a negative impact of long term morbidity and mortality. Even in patients treated successfully by angioplasty in the acute phase of infarct, the remodelling is observed in approximately 30% of cases. It is important to predict the occurrence of this phenomenon in the early phase after MI for the selection of patients who could eventually benefit from new therapeutic approach as for example cell replacement therapy. It has been advocated that stem cells coronary injections should be performed between the 5th and 10th day after an acute event. We hypothesise that a low dose dobutamine gated Tc-99m-mibi SPECT performed on 5th-6th day after reperfused acute MI can predict left ventricular remodelling and serve as a method to screen patients who could benefit from cell replacement therapy.

Detailed description: All patients will be evaluated by ce-MRI during the initial hospital stay (5th - 6th day) and at 6-month follow-up. Left ventricular remodelling will be defined as an end-diastolic volume increase of \>20% between the two exams. A low dose dobutamine gated Tc-99m-mibi SPECT will be also performed on 5th-6th day. Differences in the infarct size and severity as well as the residual inotrope reserve in the infarct area are expected between groups with and without remodelling.

Eligibility criteria: Inclusion Criteria:

* Acute myocardial infarction,
* Successful coronary angioplasty in the acute phase,
* Absence of heart failure in the acute phase

Exclusion Criteria:

* acute heart failure in the acute phase
* severe ventricular arrhythmias
* contra indications for MRI imaging

Primary outcomes:
measure: Development of left ventricular remodelling at 6-month follow-up
timeFrame: at 6-months follow-up
Secondary outcomes:
measure: Development of overt heart failure
timeFrame: development of overt heart failure
Other outcomes:
Locations:
city: Clermont-Ferrand
country: France
facility: CHU de Clermont-Ferrand
state: Auvergne
Study officials:
name: Lipiecki Janusz, Dr
role: PRINCIPAL_INVESTIGATOR
References:
citation: Ernande L, Cachin F, Chabrot P, Durel N, Morand D, Boyer L, Maublant J, Lipiecki J. Rest and low-dose dobutamine Tc-99m-mibi gated-SPECT for early prediction of left ventricular remodeling after a first reperfused myocardial infarction. J Nucl Cardiol. 2009 Jul-Aug;16(4):597-604. doi: 10.1007/s12350-009-9098-5. Epub 2009 May 29.