The pathogenesis of ectopic gastric mucosa is a matter of debate between a congenital-embryological-and an acquired origin-consecutive to a gastroesophageal reflux (GER) like Barrett's esophagus -, the most commonly accepted theory being that these areas are embryological remnants.
Standard size latex filled helium balloons stay afloat for approx 8 - 12 hours, metallic helium filled balloons float for 2-5 days. I have found that a 36 latex helium filled balloon can stay afloat for a number of days due to the thickness of the balloon and the massive quantity of helium.
11â latex balloons generally last between 12â20 hours filled with helium, and about 2â3 days when treated with HiâFloat. Foil. balloons last approx. 5â7 days. Airâfilled balloons generally last for a couple of weeks, but will not float.