Warranty periods for normal myocardial perfusion stress SPECT
| Autor: | David Garcia-Dorado, Nazarena Pizzi, Santiago Aguadé-Bruix, Jaume Candell-Riera, Gemma Cuberas-Borrós, Ignacio Ferreira-González, Guillermo Romero-Farina |
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| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Time Factors Gated SPECT Myocardial Infarction Perfusion scanning Coronary Artery Disease Kaplan-Meier Estimate Diabetes Complications Coronary artery disease Myocardial perfusion imaging Internal medicine medicine Humans Radiology Nuclear Medicine and imaging Myocardial infarction Exercise Aged Proportional Hazards Models Tomography Emission-Computed Single-Photon Ejection fraction medicine.diagnostic_test business.industry Warranty Myocardial Perfusion Imaging Dipyridamole Middle Aged medicine.disease Multivariate Analysis Exercise Test Cardiology Female Cardiology and Cardiovascular Medicine business Perfusion Follow-Up Studies |
| Zdroj: | Journal of Nuclear Cardiology. 22:44-54 |
| ISSN: | 1532-6551 1071-3581 |
| Popis: | To assess different warranty periods following a normal myocardial perfusion SPECT based on patients' clinical characteristics and the type of stress performed.A study was done of 2,922 consecutive patients (62.9 ± 13 years; 53.4% women) with a normal stress-rest SPECT. The warranty period was defined as the period during which patients remained at a low risk (1% events/year) of total mortality (TM), or hard events (HE) (cardiac death or non-fatal myocardial infarction). Of these patients, 2,051 were given an exercise myocardial perfusion imaging (Ex-MPI); 461 submaximal exercise plus dipyridamole (Ex+Dipy-MPI); and 410 dipyridamole (Dipy-MPI). During a mean follow-up of 5 ± 3.3 years, a significant reduction (P.05) of the warranty period for TM (13.5, 9.6 and 8 months) and HE (34.8, 20.5 and 8.2 months) was observed, for Ex-MPI, Ex+Dipy-MPI and Dipy-MPI, respectively. Other warranty period determinants were the clinical variables of age, sex, diabetes and known coronary artery disease. An abnormal left ventricular ejection fraction on gated-SPECT also significantly shortened the warranty period for HE in patients undergoing Ex+Dipy-MPI (P = .001) or Dipy-MPI alone (P = .007).The warranty period for a normal stress-rest SPECT is highly variable since it is primarily determined by the type of stress, the patient's clinical characteristics and LVEF. |
| Databáze: | OpenAIRE |
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