Mean platelet volume/platelet count ratio as a predictor of long-term mortality after non-ST-elevation myocardial infarction

Autor:	Meredith Akerman, Jasvinder Singh, James Lafferty, Warren D. Widmann, Basem Azab, Estelle Torbey, Joseph T. McGinn, Georges Khoueiry
Rok vydání:	2011
Předmět:	medicine.medical_specialty Platelet Count business.industry Myocardial Infarction Infarction Hematology General Medicine Prognosis medicine.disease Peripheral blood Surgery St elevation myocardial infarction Internal medicine medicine Cardiology Humans Myocardial infarction complications Platelet Long term mortality Myocardial infarction Mean platelet volume business Platelet Aggregation Inhibitors
Zdroj:	Platelets. 22:557-566
ISSN:	1369-1635 0953-7104
Popis:	Previous studies reported an association between elevated mean platelet volume (MPV) and post-myocardial infarction mortality. This study explores the association between long-term mortality after non-ST-segment elevation myocardial infarction (NSTEMI) and the peripheral blood platelet indices (i.e., the mean platelet volume (MPV), platelet count, and the MPV/platelet (MPV/P) ratio). Two physicians independently reviewed the data of 619 NSTEMI patients. The blood samples were drawn and analyzed within 1 h of admission, the second, and the last hospital days. Patients were stratified into equal tertiles according to the platelet count, MPV, and MPV/platelet ratio. The primary outcome, 4-year all-cause mortality, was compared among the platelet indices tertile models. According to MPV, platelet count, and MPV/platelet ratio tertile models, there was a trend of higher 4-year mortality for the lower and upper tertiles in comparison to the middle tertiles. However, only the admission MPV/platelet ratio tercile model was statistically significant for predicting the 4-year mortality. The mortality rate of the highest MPV/platelet (48/207 (23%)) and the lowest (41/206 (20%)) tertiles were significantly higher than the middle tertile (19/206 (9%)), p = 0.0004 by the chi-squared test. After adjusting for Global Registry of Acute Coronary Events, the patients in the combined first and third MPV/P tertiles had higher mortality in reference to those in the middle MPV/P tercile (hazard ratio 1.951, confidence interval 1.032-3.687, and p 0.0396). Our novel finding is that the MPV/platelet ratio is superior to the MPV alone in predicting long-term mortality after NSTEMI. We suggest that using this ratio will magnify any existing relationship between platelet indices and mortality post-NSTMI. Further studies are needed to confirm our finding.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d99b0d33de53a939329edfbe2ab26187 https://doi.org/10.3109/09537104.2011.584086 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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