Abstract
Purpose
In gated myocardial perfusion SPECT, apical remodeling may be identified by the presence of a divergent pattern (DP) of the left ventricle (LV).
Methods and Results
We examined 150 anterior ST-elevation myocardial infarction (STEMI) patients, all successfully treated with primary percutaneous coronary interventions (PCI). Perfusion gated-SPECT to measure infarct size, LV end-diastolic (ED) and end-systolic (ES) volumes and ejection fraction (EF) was acquired before hospital discharge and repeated at 6-month follow-up. DP was observed in 26 patients, who had larger infarct size (28 ± 19% vs. 15.7 ± 17%, P < 0.02), and lower EF (33 ± 7% vs. 41 ± 10%, P < 0.001) than patients without DP. At follow-up, DP patients had significantly larger EDV (156 ± 54 vs. 107 ± 44 mL, P < 0.0001), ESV (104 ± 47 vs. 59 ± 36 mL, P < 0.0001) and lower EF (35 ± 12% vs. 48 ± 13%, P < 0.0001). 54% of DP patients developed remodeling at follow-up vs. 12% of those without DP (P < 0.001). During follow up, 7 events in the DP group (27%) and 11 events in patients without DP (9%; P < 0.02) occurred. Kaplan–Meier survival curves showed a worse prognosis for DP patients.
Conclusion
In patients with anterior AMI, early DP detection is related to subsequent LV dysfunction, larger infarct size, and worse severity. It is helpful for predicting LV remodeling at short-term follow-up and has prognostic implications.
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Abbreviations
- AMI:
-
Acute myocardial infarction
- DP:
-
Divergent pattern
- EF:
-
Ejection fraction
- EDV:
-
End-diastolic volume
- ESV:
-
End-systolic volume
- LV:
-
Left ventricle
- PCI:
-
Percutaneous coronary interventions
- SPECT:
-
Single-photon emission computed tomography
- STEMI:
-
ST-elevation myocardial infarction
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Disclosures
Raffaella Calabretta, MD; Angelo Castello, MD; Cristina Giglioli, MD; Emanuele Cecchi, MD; Giampaolo Cerisano, MD; Marcus Hacker, MD; Roberto Sciagrà, MD: Disclosures: none.
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Raffaella Calabretta, MD; Angelo Castello, MD; Cristina Giglioli, MD; Emanuele Cecchi, MD; Giampaolo Cerisano, MD; Marcus Hacker, MD; Roberto Sciagrà, MD: Not applicable.
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Calabretta, R., Castello, A., Giglioli, C. et al. Prognostic value of divergent pattern detection by 99mTc-sestamibi gated SPECT in patients with anterior acute myocardial infarction. J. Nucl. Cardiol. 29, 3115–3122 (2022). https://doi.org/10.1007/s12350-021-02874-6
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DOI: https://doi.org/10.1007/s12350-021-02874-6