Based on what criteria to determine the self-extracting limited time is 15s rescue buoy?
When choking water, the victim stopped breathing, heart beat slowed down due to reflection, resulting in a lack of oxygen to the blood, causing increased heart rate , blood pressure. If apnea continues lasts between 20 seconds to 2-3 minutes (depending on the victim), the threshold is reached and breathing to make water appear inhaled causing immediate laryngospasm, appeared Hurricane 2nd stop breathing, then the mandatory breath, causing contraction of water, inhalation of foreign bodies being. Consequently, slow down the heart rate, arrhythmia, cardiac arrest and death. So determining the self-extracting limited time is 15s rescue buoy is reasonable for the rescue will limit damage to the body.
đang được dịch, vui lòng đợi..