My wife has what she thinks is stomach spasms. she also has hyhatal hernia and sleep apnea.

Abdominal symptoms.: I am not sure what the question is here. Is she experiencing abdominal cramping or pain? It would be prudent to have this assessed by her physician. If I am missing the point of this question, please clarify and re-ask.

Sleep Apnea: Hiatal hernia can cause spasms sleep apnea can aggravate heart burn and symptoms of hiatal hernia.