نتایج جستجو برای: سیگنال ecg

تعداد نتایج: 29830  

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1390

مقدمه: خطر عوارض ماکروواسکولار دیابت 4 برابر خطر عوارض میکروواسکولار آن برآورد شده است و بیماری عروق کرونر از مهمترین عوارض ماکروواسکولار دیابت می باشد. بیماری عروق کرونر در بیماران دیابتی پیش آگهی بدتری دارد و از طرفی پاسخ به درد در بیماران دیابتی وجود ندارد و یا کند است. هدف: میزان شیوع ایسکمی خاموش قلبی در بیماران مبتلا به دیابت مراجعه کننده به درمانگاه های قلب و غدد بیمارستان بوعلی شهر ته...

2017
Hanan Al Rayes Paula J. Harvey Dafna D. Gladman Jiandong Su Arthy Sabapathy Murray B. Urowitz Zahi Touma

BACKGROUND Electrocardiogram (ECG) cardiovascular disease (CVD) abnormalities (ECG-CVD) are predictive of subsequent CVD events in the general population. Systemic lupus erythematosus (SLE) patients are vulnerable to CVD. We aimed to determine the prevalence of ECG-CVD in SLE patients and to examine the risk factors associated with ECG-CVD. METHODS A 12-lead resting supine ECG was performed o...

Farhad Heydari, Majid Zamani, Masoudeh Babakhanian, Mohammad Mahdi Zarezadeh, Mohammad Nasr-Esfahani,

Background: In addition to heart disease, ECG also changes in non-heart disease, which due to its similarity, can lead to misdiagnosis of heart disease in patients. ECG changes in brain lesions such as ischemic and hemorrhagic strokes, brain traumas, etc. and have been studied in many articles, but the effects of brain midline shift on ECG changes have not been studied. In this study, we want t...

Ali Ghaffari, Mohammad Reza Homaeinezhad, Mostafa Rahnavard, Yashar Ahmadi,

In this study, a mathematical model is developed based on algebraic equations which is capable of generating artificially normal events of electrocardiogram (ECG) signals such as P-wave, QRS complex, and T-wave. This model can also be implemented for the simulation of abnormal phenomena of electrocardiographic signals such as ST-segment episodes (i.e. depression, elevation, and sloped ascending...

Background: Simultaneous electrocardiographic (ECG) changes are seen in hemorrhagic brain events even in the absence of associated myocardial infarction (MI). This study was designed to assess the role of ECG changes to predict true MI in patients with hemorrhagic brain trauma. Methods: Data of 153 patients with traumatic brain injury and concomitant ECG changes were recorded. Enzyme study w...

The aim of this study was to define the electrocardiogram (ECG) changes following the moderate to severe CO intoxication in rats, and also evaluating the effect of erythropoietin (EPO) on observed cardiac disturbances. The growing literature on erythropoietin effect on cardiac ischemia led us to question its effect on cardiotoxicity due to the carbon monoxide poisoning. Wistar rats were exposed...

Kamran Montazeri , Mostafa Dehghani Dastjerdi , Nastaran Eizadi-Mood ,

Background: Benzodiazepine (BZD) toxicity alone or with other drugs is common in poisoning emergency departments of Iran. The aim of this study was to evaluate the cardiovascular findings in patients with benzodiazepine poisoning upon admission to the emergency department. Methods: In a prospective study which was followed by retrospective analysis, 267 patients poisoned with BZD were evalu...

Alireza Badsar, Manochehr Akbar Poor , Mohammadreza Aghajankhah , Morteza Fallah Karkan , Morteza Rahbar Taromsari , Nastaran Farhamand Porkar,

Background: Cardiac manifestations that occur in a majority of patients with organophosphate (OP) poisoning may range from innocuous electrocardiographic manifestations, such as sinus tachycardia, to life-threatening complications, including cardiogenic pulmonary edema and myocardial necrosis. In this study, we evaluated the various electrocardiographic manifestations in patients with OP pois...

Introduction: There are many methods for teaching ECG interpretation, but deciding on the best method is yet to be discussed. The purpose of this research was to examine teaching methods for ECG interpretation and introduce the most effective ones. Methods: This systematic review was conducted by searching through scientific databases of PUBMED, Science Direct, SID and IranMedex. Papers publish...

Estrus synchronization is a valuable management tool that has been employed in enhancing reproductive efficiency in ewes. This study was conducted to investigate the reproductive performance of ewes with short and long-term estrous synchronization programs accompanied by eCG or GnRH during the non-breeding season. A total of 48 Afshari ewes were randomly selected and divided into two groups. In...

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