1, 2 It contains all normal layers of the intestinal wall and, in approximately 50 percent of cases, contains tissue from other sites (ectopic tissue). 2 This ectopic, or heterotopic, tissue can often be the cause of complications occurring in Meckel's diverticulum. Meckel's diverticulum occurs in about 2 percent of the population, making it the most prevalent congenital abnormality of the gastrointestinal tract.
A common helium-filled latex balloon lasts from about 12 hours up to two days. However, the size, type of material, and presence of a sealant all affect the balloon's lifespan. The treatment and level of activity to which the balloon is subjected also affects how long it floats.
Generally, the larger a helium balloon is, the longer it lasts. A 90-centimeter latex balloon lasts about 12 to 36 hours longer than a 30-centimeter latex balloon does. A sealant called Hi-Float adds a week or two to the lifespan of latex balloons. Mylar balloons last for about three to four days before deflating slightly.