Track topics on Twitter Track topics that are important to you
Platelet size, measured as mean platelet volume (MPV), is associated with platelet reactivity. MPV has been identified as an independent risk factor for future stroke and myocardial infarction. The aim of this study was to determine the association of MPV with the development of stoke in patients with atrial fibrillation (AF). MPV, N-terminal pro B-type natriuretic peptide (NT-proBNP), and high-sensitivity C-reactive protein (hsCRP) were analysed in 200 patients with AF (mean age 69 years; 56% male). The primary endpoint was ischaemic stroke event. The mean MPV was 8.5 ± 1.0 fL and the median NT-proBNP was 1916.5 (IQR 810-4427) pg/mL. The median hsCRP was 0.47 (IQR 0.32-2.46) mg/dL. There were 14 stroke events during a mean of 15.1 months of follow up. Kaplan-Meier analysis revealed that the higher tertile MPV group (≥8.9 fL) had a significantly higher stroke rate compared to the lower tertile MPV group (<8.0 fL) (14.7% vs. 3.1%, log-rank: P = 0.01). A higher MPV was an independent predictor of stroke risk after adjusting for age, gender, and other CHADS(2) (congestive heart failure, hypertension, diabetes, and previous stroke or transient ischemic attack (TIA) history) score components (hazard ratio: 5.03, 95% CI 1.05-24.05, P = 0.043) in Cox proportional hazard analysis. When the MPV cut-off level was set to 8.85 fL using the receiver operating characteristic curve, the sensitivity was 71% and the specificity was 69% for differentiating between the group with stroke and the group without stroke. This value was more useful in patients with a low to intermediate traditional thromboembolic risk (CHADS(2) score <2). Furthermore, AF patients with an MPV over 8.85 fL had high stroke risk without anticoagulation, especially in the low thromboembolic risk group (Log-Rank <0.0001). The results of this study show that MPV was a predictive marker for stroke; its predictive power for stroke was independent of age, gender, and other CHADS(2) score components in patients with AF. These findings suggest that anticoagulation may be needed in patients with a high MPV, even if they have low to intermediate traditional thromboembolic risk (CHADS(2) score <2).
Department of Internal Medicine, Chosun University School of Medicine , Gwangju 501-759 , Republic of Korea.
This article was published in the following journal.
Platelet reactivity may be important in the management of patients with stroke. However, degree of platelet reactivity has not been correlated with Thrombelastography (TEG(®)) parameters in stroke. W...
Atrial fibrillation is the most common sustained arrhythmia in clinical practice. It is important to specify patients with a high risk of thromboembolus due to elevated procoagulant and prothrombotic ...
Low-density lipoprotein cholesterol (LDL-C) has been reported to increase platelet activation. Reducing the level of LDL-C with statins induces important pleiotropic effects such as platelet inhibitio...
Helicobacter pylori is associated with chronic immune thrombocytopenia. Eradication of H. pylori has been related with a platelet response and this treatment has been included within management strate...
Mean platelet volume (MPV) is a potential marker of platelet reactivity. Increased MPV levels are shown to be the predictor of cardiovascular diseases, hypertension, and stroke. Previous studies demon...
Purpose of the present research project is to study a new in-vivo test for abnormal platelet function and to study the effect of certain drugs on clinical bleeding. This is a randomized c...
Stroke-associated pneumonia (SAP) constitutes a clinically relevant complication of stroke, because it increases the mortality and has a negative impact on the neurological prognosis of th...
This study will investigate the effects of a potential neuroprotectant compound, YM872, in the treatment of acute ischemic stroke. The study will determine if a 24-hour infusion of YM872,...
Autologous platelet rich fibrin matrix will release growth factors which could increase the production of dermal proteins or affect the vascularity and status of neighboring tissues. This ...
We hypothesize that the stroke volume variation measured using the commercially available LiDCO monitor provides a reasonable estimate of volume when compared to standard measures. This st...
The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).
The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of blood ejected from a ventricle at each beat is STROKE VOLUME.
The amount of BLOOD pumped out of the HEART per beat not to be confused with cardiac output (volume/time).
A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower thorax. It is used principally to calculate stroke volume and cardiac volume, but it is also related to myocardial contractility, thoracic fluid content, and circulation to the extremities.
The number of PLATELETS per unit volume in a sample of venous BLOOD.
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...
Stroke - Cerebrovascular Disease (CVA)
A stroke is a serious medical condition that occurs when the blood supply to part of the brain is cut off. Strokes are a medical emergency and prompt treatment is essential because the sooner a person receives treatment for a stroke, the less damage is ...