What are normal breathing sounds for 92 yo? all night long has gasps, lapses, loud breaths, not typical snoring. never noisy before. sleep apnea?

Could be sleep apnea: But you need to see a doctor. The internet is a great place to answer some questions like "what is "sleep apnea?" or "what is cheyne-stokes breathing?" the internet not a good place to get a diagnosis. That requires obtaining a complete history, a hands-on physical exam, maybe a sleep study or echocardiogram, etc., use the internet to get the questions to bring to your doctor, not the answers.

Not normal: These are typical signs of sleep apnea, a condition which involve periods of ten seconds or more without breathing (apnea) and periods of time with shallow breathing and a significant decrease in blood oxygen levels (hypopnia). This condition can be diagnosed by a sleep specialist with either an overnight at home sleep test or at a sleep clinic.

Sounds like it: Your description sure sounds like a sleep apnea problem. You need to see your doctor asap and hopefully get referred for a sleep study so treatment can be initiated. Don't hesitate.