This improves blood flow to the heart. muscle and relieves symptoms (usually chest pain). Stents are used depending on certain features of the. artery blockage. Factors that affect whether a stent can. be used include the size of the artery and where the. blockage is.
Usually, this gasping or agonal breathing stops within about four minutes, which is why many experts have not recognized this phenomenon so far! Gasping is a survival reflex triggered by the brain and can increase the chances of survival for someone in cardiac arrest.
An Introduction to Sleep Apnea and Its Effects. During the pauses in breathing that occur in someone with sleep apnea, the oxygen levels in the blood drop. The brain reacts to the drop in oxygen by waking the person up enough to resume breathing (and snoring), but not necessarily enough to fully awaken the person.