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[Usefulness of ventricular function values obtained using post-stress gated-SPECT in a diabetic population with
S Ruiz Solís1, M Maure Rico, M Cortés Romera
1Servicio de Medicina Nuclear. Hospital General de Ciudad Real. Ciudad Real. España. sruizsolis@hotmail.com
Insights
Left ventricular function values from gated-SPECT provide diagnostic information for diabetic patients with suspected ischemic heart disease (IHD). End-diastolic volume (EDV) specifically correlates with perfusion defects and IHD diagnosis.
Area of Science:
- Cardiology
- Nuclear Medicine
- Diabetology
Background:
- Diabetes mellitus (DM) increases the risk of ischemic heart disease (IHD).
- Accurate assessment of cardiac function is crucial in diabetic patients with suspected IHD.
- Myocardial perfusion gated-Single Photon Emission Computed Tomography (gated-SPECT) is a key imaging modality.
Purpose of the Study:
- To evaluate the clinical utility of left ventricular (LV) function parameters derived from post-stress gated-SPECT.
- To determine the association of LV function values with perfusion defects and IHD diagnosis in diabetic patients.
Main Methods:
- Sixty-one diabetic patients with suspected IHD underwent post-stress myocardial perfusion gated-SPECT.
- Analysis included ejection fraction, ventricular volumes, and their relationship with perfusion findings and diagnosis.
- Patients were followed for a mean of 14 months to assess clinical evolution.
Main Results:
- All LV function values showed significant differences between normal and abnormal perfusion groups, and between IHD and non-IHD diagnoses.
- End-diastolic volume (EDV) was the sole parameter statistically associated with perfusion abnormalities, defect severity, and IHD diagnosis after multivariate analysis.
- No significant association was found between LV function values and cardiac events.
Conclusions:
- LV function parameters from gated-SPECT enhance diagnostic information in diabetic patients with suspected IHD.
- End-diastolic volume (EDV) is a significant predictor of perfusion status, defect severity, and IHD diagnosis in this population.
- Further research may explore the role of EDV in risk stratification for cardiac events in diabetic patients.
Objective:
To assess the clinical usefulness of left ventricular function values obtained using post-stress myocardial perfusion gated-SPECT in diabetic patients with suspected ischaemic heart disease (IHD).
Materials And Methods:
Sixty-one patients with diabetes mellitus (DM), with clinical suspicion of IHD and no previous history of heart disease were studied. Ergometric or pharmacological post-stress myocardial perfusion gated-SPECT was performed on all patients. The relationship between the ejection fraction values and ventricular volumes, and the perfusion study results, final diagnosis, severity of the perfusion defects and the clinical evolution was studied. The mean follow-up time was 14 months. RESULTS; All the ventricular function values independently showed significant differences between the groups with a normal and pathological perfusion study, and between groups with a final diagnosis of IHD and non-IHD. After multivariate logistic regression, the end-diastolic volume (EDV) was the only value which showed a statistical association with the pathological perfusion study, its severity and the final diagnosis of IHD. No statistical association was observed between the ventricular function values and the occurrence of cardiac events.
Conclusions:
All the ventricular function values obtained by gated-SPECT added diagnostic information to the post-stress myocardial perfusion study in the diabetic population with suspected IHD; however, only EDV showed a statistical association with the pathological perfusion study, severity of defects and the final diagnosis of IHD.
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