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Second-degree atrioventricular block (AV block) is a disease of the electrical conduction system of the heart. It is a conduction block between the atria and ventricles. The presence of second-degree AV block is diagnosed when one or more (but not all) of the atrial impulses fail to conduct to the ventricles due to impaired conduction.
Specialty. Cardiology. Atrioventricular block (AV block) is a type of heart block that occurs when the electrical signal traveling from the atria, or the upper chambers of the heart, to ventricles, or the lower chambers of the heart, is impaired. Normally, the sinoatrial node (SA node) produces an electrical signal to control the heart rate.
Heart block. Heart block (HB) [1] is a disorder in the heart 's rhythm due to a fault in the natural pacemaker. [2] This is caused by an obstruction – a block – in the electrical conduction system of the heart. Sometimes a disorder can be inherited. Despite the severe-sounding name, heart block may cause no symptoms at all in some cases, or ...
Philip James DeFranco[ 3 ] (born Philip James Franchini Jr.; [ 4 ] born December 1, 1985), commonly known by his online nickname PhillyD, and formerly known as sxephil, is an American media host and YouTube personality. He is best known for The Philip DeFranco Show, a news commentary show centered on current events in politics and pop culture.
SourceFed Studios. SourceFed Studios was an American digital media company and multi-channel network created by Philip DeFranco in 2011. After finding success during the early years of YouTube with his eponymous news show, DeFranco secured funding from YouTube and launched SourceFed as part of the YouTube Original Channel Initiative in 2012.
Intraventricular block. ECG characteristics of an intraventricular block subtype - RBBB showing wide QRS complexes with a terminal R wave in lead V1 and a prolonged S wave in lead V6. An intraventricular block is a heart conduction disorder — heart block of the ventricles of the heart. [1] An example is a right bundle branch block, right ...
Left axis deviation. The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane. In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between −30° and −90°.
SourceFed was a YouTube channel and news website created by Philip DeFranco in January 2012 as part of YouTube's original channel initiative, and was originally produced by James Haffner. The main SourceFed channel mainly focused on popular culture, news, and technology. [ 2 ] SourceFed was a part of DeFranco's portfolio of Internet-based media ...