thank you all for the information.
i recently did a sleep study and am waiting for the results.
However this question was a concern of my father-in-laws....my mother-in-law says that he stops breathing regularly and he admits to waking up gasping for air but won't go to get tested or anything....he hasn't mentioned anything to his dr's and recently he did go to the heart dr...the heart dr says his heart is working at 50% and wants to do an angiogram....i was thinking that maybe his problems are related to apnea and not a blockage....i will pass along all information. thanks again