نتایج جستجو برای: myocardial mechanical parameters
تعداد نتایج: 944133 فیلتر نتایج به سال:
Background: Little is known about the relation between the extent of microvascular damage and infarct size in patients after successful mechanical reperfusion of acute myocardial infarction. Objective: To compare the spatial extent of reduced myocardial signal between real time myocardial contrast echocardiography (MCE) and single photon emission computed tomography (SPECT) after successful mec...
BACKGROUND Little is known about the relation between the extent of microvascular damage and infarct size in patients after successful mechanical reperfusion of acute myocardial infarction. OBJECTIVE To compare the spatial extent of reduced myocardial signal between real time myocardial contrast echocardiography (MCE) and single photon emission computed tomography (SPECT) after successful mec...
In a Principles and Parameters syntax framework sentences are derived by two operations, merger and movement. Merger takes two categories as input (e.g., V and NP) and merges them into a single, higher-order category (e.g., VP). There are, however, constraints on the categories that can be merged successfully. Consider the following pairs: 1a. [NP The girl] sneezed 1b. *[NP The girl] sneezed [N...
چکیده: در این تحقیق تأثیر ملاس که یکی از محصولات جانبی صنایع قند می باشد به عنوان یک افزودنی مقاومت خشک جدید در بهبود پالایش پذیری و ویژگی های فیزیکی و مکانیکی مقوای کنگره ای کهنه (occ) مورد بررسی قرار گرفته شد. بدین منظور پنج سطح ملاس( 0،5، 10، 15 و 18%) و سه سطح درجه روانی(420،400و320 میلی لیتر)به عنوان فاکتورهای متغیر در نظر گرفته شد و برای هر تیمار کاغذهای دست ساز با مساحت 2cm200 و وزن پای...
Normal cardiac performance reflects the interdependence between myocardial mechanical function, myocardial oxygen consumption (MVO2), and blood flow. Indeed, physiologic processes directly associated with systolic function (e.g., wall stress, shortening, heart rate, contractility) are major determinants of MVO2. Conversely, when myocardial blood flow is interrupted, there is rapid cessation of ...
An unresolved issue in patients with diastolic dysfunction is that the estimation of myocardial stiffness cannot be decoupled from diastolic residual active tension (AT) because of the impaired ventricular relaxation during diastole. To address this problem, this paper presents a method for estimating diastolic mechanical parameters of the left ventricle (LV) from cine and tagged MRI measuremen...
Introdution: The rapid and accurate diagnosis of acute myocardial infarction is essential for effective treatment. Recently, troponin has been introduced as a biochemical marker for early diagnosis of acute myocardial infarction. Platelet parameters (P-LCR, MPV, PDW) play a key role in the pathophysiology of acute coronary syndrome. The aim of this study was to evaluate platelet indexes in the ...
BACKGROUND Injurious mechanical ventilation (MV) may augment organ injury remote from the lungs. During sepsis, myocardial dysfunction is common and increased endothelial activation and permeability can cause myocardial edema, which may, among other factors, hamper myocardial function. We investigated the effects of MV with injuriously high tidal volumes on the myocardium in an animal model of ...
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