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العنوان
Usefulness of the Electrocardiogram as a Tool to Localize Culprit Vessel Occlusion Site in Acute STSegment Elevation Myocardial Infarction /
المؤلف
Shama, Mohamed Abd Elhady Mohamed.
هيئة الاعداد
باحث / محمد عبد الهادى شامه
مشرف / رغده غنيمى الشيخ
مناقش / منى عادل الصعيدى
مناقش / محمد نسيم حسين
الموضوع
Emergency Medicine. Emergency Medicine &Traumatology.
تاريخ النشر
2019.
عدد الصفحات
p 108. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
الطب (متفرقات)
تاريخ الإجازة
20/2/2019
مكان الإجازة
جامعة طنطا - كلية الطب - Emergency Medicine &Traumatology
الفهرس
Only 14 pages are availabe for public view

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Abstract

Summary
Acute coronary syndrome (ACS) is a syndrome (set of signs
and symptoms) due to decreased blood flow in the coronary arteries
such that part of the heart muscle is unable to function properly or
dies. The most common symptom is chest pain which often radiating
to the left shoulder or angle of the jaw, crushing, central and
associated with nausea and sweating. Acute coronary syndrome is
usually caused by one of three problems: ST elevation myocardial
infarction (STEMI, 30%), non ST elevation myocardial infarction
(NSTEMI, 25%), or unstable angina (38%).
Acute myocardial infarction (AMI) indicates irreversible
myocardial injury resulting in necrosis of a significant portion of
myocardium (generally >1 cm). Atherosclerosis is the most common
cause of myocardial infarction and its major risk factors are
hyperlipidemia, diabetes, smoking, hypertension, gender and age.
Endothelial dysfunction and inflammation have a major role in the
initiation of the atherosclerotic plaque formation.
Myocardial infarction occurs most often in the early morning
hours. Mechanisms that may explain this circadian variation include
morning increase in sympathetic tone and plasma catecholamine
leading to increases in blood pressure, heart rate, coronary vascular
tone, and myocardial contractility resulting in increased myocardial
demand.