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.
âThe price of helium has almost tripled in the last five years,â said Lori Barrett, co-owner of The Secret Garden, 1215 E. Pershing Road. Florists and party retailers who sell helium balloons see a surge in sales around Valentine's Day, increasing the need to have an ample helium supply on hand to meet the demand.