Schrader valves, seen on mountain bikes, kidsâ bikes and all types of casual riding bikes, are the same valve type you will see on automobile tires. The valve body is shorter than that of a Presta, and the depressible pin sits inside the valve stem rather than on top of it.
Papilledema refers to swelling of the optic disc from increased intracranial pressure (ICP)]. It must be distinguished from optic disc swelling from other causes which is simply termed optic disc edema. Papilledema must also be distinguished from pseudo-papilledema such as optic disc drusen. Since the root cause of papilledema is increased intracranial pressure (ICP) this is an alarming sign which may presage such entities as brain tumor, CNS inflammation, or idiopathic intracranial hypertension (IIH). Etiology
Edema is the accumulation of fluid in bodily tissues or a body cavity. The word is derived from the Middle English word ydema, which comes from the Greek word for swelling..In people who suffer from this condition, the swelling is usually clearly visible.eeping the legs elevated may help treat leg edema. Pulmonary edema is usually caused by heart failure. Cutting back on salt may help relieve edema. Compression stockings may help prevent fluid from collecting in the lower extremities.