8 doctors weighed in:
How does a hiatal hernia cause gerd?
8 doctors weighed in

Dr. Barry Rosen
Surgery
5 doctors agree
In brief: "Yo-Yo" stomach.
One mechanism that prevents reflux of food or acid from the stomach up the esophagus is the fact that the pressure within the abdominal cavity is higher than the pressure in the stomach.
If the stomach "yo-yo's" into the chest cavity through a hiatal hernia, the negative pressure within the chest cavity changes this pressure gradient, favoring reflux.

In brief: "Yo-Yo" stomach.
One mechanism that prevents reflux of food or acid from the stomach up the esophagus is the fact that the pressure within the abdominal cavity is higher than the pressure in the stomach.
If the stomach "yo-yo's" into the chest cavity through a hiatal hernia, the negative pressure within the chest cavity changes this pressure gradient, favoring reflux.
Dr. Barry Rosen
Dr. Barry Rosen
Thank
3 doctors agree
In brief: Mechanics
The hiatus helps control reflux by placing pressure at the distal esophagus where it comes through the hiatus.
When you have a hernia, this pressure is reduced which can now allow reflux to occur. The position can change with a hernia and this change of position can allow reflux as well.

In brief: Mechanics
The hiatus helps control reflux by placing pressure at the distal esophagus where it comes through the hiatus.
When you have a hernia, this pressure is reduced which can now allow reflux to occur. The position can change with a hernia and this change of position can allow reflux as well.
Dr. Scott Grover
Dr. Scott Grover
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