yes, proper chest compressions could cause air movement, might i re affirm COULD. Now, how could it cause air movement, because you are not only compressing the sternum, but bending the anterior ribs(that 'was' attached to the sternum, before you broke it) down, causing a slight compression of the thoracic cavity, which when you compress that you are causing a positive pressure in the lungs, which once you recoil the compression, the ribs return to where they started(less the fractured sternum) which causes negitive pressure in the lungs, causing air to come in. BUT, more so of the reason they removed ventilations from the normal 'lay person' is for two reasons: 1, people might discouraged by the complete cpr process, more so they kiss of life(mouth to mouth resusitation) 2, in the majority of cardiac arrest in adults its not the problem of the lungs oxygenating the blood, its the person/patient had a heart attack, and part of the heart is becoming ichemic and irritated, which could cause the hard(in the lesser of the actual process) to go into a(n) irregular or absent heart rhythem(it usually stays in a vfib, vtach rhythem until it uses up all of the oxygen and atp in the heart), now, you must remember, the heart can not get its oxygen/atp(energy) from the blood inside of its chambers, but the vessels on its exterior(coronary arteries), so you have oxygenated blood, with atp in it, inside of the heart, but the heart can't use it, because it needs to be pumped out of the heart, to the aorta, where the coronary arteries are connected, then the heart could have a chance,
so, i must not say that i apologize but i did not read most of these comments, this might have already been posted, but here it is again
further more, revivant (a part of zoll) has a cpr machine out, called the 'auto pulse', instead of using cpr(pushing on the chest, with a palm) it is a flat board that as a compression strap, that encompasses the patient, and actually squeezes the chest to compress the heart.
i can go on and on about the multitude of studies on the subject, email me if you would like some more
-thomas
Slashdot Mirror
want to complain about a small amount of usage.. how about what will be used when we start using 128bits instead of 32 bits for IP addresses in IPv6
yes, proper chest compressions could cause air movement, might i re affirm COULD. Now, how could it cause air movement, because you are not only compressing the sternum, but bending the anterior ribs(that 'was' attached to the sternum, before you broke it) down, causing a slight compression of the thoracic cavity, which when you compress that you are causing a positive pressure in the lungs, which once you recoil the compression, the ribs return to where they started(less the fractured sternum) which causes negitive pressure in the lungs, causing air to come in. BUT, more so of the reason they removed ventilations from the normal 'lay person' is for two reasons: 1, people might discouraged by the complete cpr process, more so they kiss of life(mouth to mouth resusitation) 2, in the majority of cardiac arrest in adults its not the problem of the lungs oxygenating the blood, its the person/patient had a heart attack, and part of the heart is becoming ichemic and irritated, which could cause the hard(in the lesser of the actual process) to go into a(n) irregular or absent heart rhythem(it usually stays in a vfib, vtach rhythem until it uses up all of the oxygen and atp in the heart), now, you must remember, the heart can not get its oxygen/atp(energy) from the blood inside of its chambers, but the vessels on its exterior(coronary arteries), so you have oxygenated blood, with atp in it, inside of the heart, but the heart can't use it, because it needs to be pumped out of the heart, to the aorta, where the coronary arteries are connected, then the heart could have a chance, so, i must not say that i apologize but i did not read most of these comments, this might have already been posted, but here it is again further more, revivant (a part of zoll) has a cpr machine out, called the 'auto pulse', instead of using cpr(pushing on the chest, with a palm) it is a flat board that as a compression strap, that encompasses the patient, and actually squeezes the chest to compress the heart. i can go on and on about the multitude of studies on the subject, email me if you would like some more -thomas