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An aortic aneurysm is an enlargement (dilatation) of the aorta to greater than 1.5 times normal size. [1] Typically, there are no symptoms except when the aneurysm dissects or ruptures, which causes sudden, severe pain in the abdomen and lower back. [2] [3] The etiology remains an area of active research.
Sodium channel protein type 5 subunit alpha, also known as Na V 1.5 is an integral membrane protein and tetrodotoxin-resistant voltage-gated sodium channel subunit. Na V 1.5 is found primarily in cardiac muscle, where it mediates the fast influx of Na +-ions (I Na) across the cell membrane, resulting in the fast depolarization phase of the cardiac action potential.
Aneurysm of the aortic sinus, also known as the sinus of Valsalva, is a rare abnormality of the aorta, the largest artery in the body.The aorta normally has three small pouches that sit directly above the aortic valve (the sinuses of Valsalva), and an aneurysm of one of these sinuses is a thin-walled swelling.
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That is, time dilation can be measured by synchronizing two stationary clocks A and B, and then the readings of a moving clock C are compared with them. Changing the convention of synchronization for A and B makes the value for time dilation (like the one-way speed of light) directional dependent.
Abdominal aortic aneurysm (AAA) is a localized enlargement of the abdominal aorta such that the diameter is greater than 3 cm or more than 50% larger than normal. [1] An AAA usually causes no symptoms, except during rupture. [1]
This is because Earth's equipotential makes net time dilation equal across its geodesic surface. [18] That is, the combination of Special and General effects make the net time dilation at the equator equal to that of the poles, which in turn are at rest relative to the center.
It can broadly be classified as either right atrial hypertrophy (RAH), overgrowth, or dilation, like an expanding balloon. Common causes include pulmonary hypertension , which can be the primary defect leading to RAE, or pulmonary hypertension secondary to tricuspid stenosis ; pulmonary stenosis or Tetralogy of Fallot i.e. congenital diseases ...