MECHANICAL . . . . . . . . . . . . . . 6 i. Transport . . . . . . . . . . . . . 6 ii. Connections . . . . . . . . . . . . 6 iii. Mounting . . . . . . . . . . . . . 6 iv. Storage . . . . . . . . . . . . . . 6 v. Shock and Vibration . . . . . . . . . . 6 ENVIRONMENTAL . . . . . . . . . . . . 6 i. EM Radiation . . . . . . . . . . . . 6 ii. Magnetic Fields . . . . . . . . . . . 6 iii. Atmospheric c...

background: isolated right bundle branch block (rbbb) is a common finding in the general population. the atrioventricular node (avn) artery contributes to the blood supply of the right bundle branch. our hypothesis was that the anatomy of the avn artery and the pattern of dominancy differ between subjects with and without rbbb. methods: w e retrospectively studied the coronary angiography of 92...

introduction: skin resistance is greatly dependent on its collagen amount and nutritional substances such as crude protein that affect the skin collagen can indirectly influence the skin resistance and increase its strength. in this regard, this study aimed to evaluate the effect of in ovo methionine injection on histomorphometry of the skin layers. methods: thirty fertilized eggs of ross 308 b...

In this review we present evidence from many experimental studies which challenge the concept of predestination of His bundle fibers. Using both intra- and extracellular His bundle pacing in the context of atrio-ventricular block and the development of bundle branch blocks these experimental studies provide the underlying mechanisms for the recent clinical findings showing the benefits of perma...

background: acute myocardial infarction (ami) is one of the most common causes of morbidity and mortality. considering immense socioeconomic damages of growing ami in developing countries we estimated prognostic value of major risk factors of ami to predict probable in-hospital ami mortality. methods: in a cohort survey from june 2004 to march 2006, 1798 patients hospitalized with proven ami en...