CPR

If you can determine that a person is breathing, then you know that the heart is beating. If the heart is not beating, there cannot be breathing. This means that when there is definitely breathing, you should not continue chest compressions. Please note, there are cases where breathing is occurring but for some reason there is no heart beat. In this case only ECC should be performed. However, this is a very rare case and breathing usually means there is a heart beat.

Cardiac arrest is the only event in which CPR is appropriate. Chest compressions should never be done on a patient with a beating heart. The exception to that is treatment for choking, but that's a bit more advanced. Rescue breathing is appropriate for several medical and trauma problems, but CPR is only done during cardiac arrest. One thing to remember about cardiac arrest is that once someone is in cardiac arrest, they are DEAD. Nothing that a rescuer can do can make that person more dead. Also, in 2010, the standards are changing to what's called CCR (Cerebral Cardio Resuscitation), which is compression only CPR. No rescue breathing at all. If the heart isn't beating, the oxygen does no good. The debate has long been about whether stopping compressions for breaths, even though the cessation is brief, is bad for the perfusion pressure in the organs. They have determined that it is better to not have even brief cessations in chest compressions.

If you're there while someone else is doing CPR on a victim;

-- Make sure the area is safe & secure, and also that the victim is not laying in water.

-- Call for an ambulance.

-- Stay with the rescuer, as they might need you to take over for a few minutes while they rest (CPR is very tiring after a while).

-- Make sure to keep spectators back at a distance so that when the medics arrive they do not have to push through a crowd.

Basically, there's a lot you can do to help. Of course the most important is staying calm.

Compress a child's chest 1 to 1 1/2 inches.

This depends on what level of training you have received. The American Heart Association guidelines no longer recommend a pulse check for non-medical professionals.

Infants should receive chest compressions in a ratio of 30 compressions: 2 breaths if they are unresponsive to verbal and tactile stimulation (tickle their foot) and are not breathing. Direct someone to call 911 immediately.

Additionally, if an infant chokes the guidelines recommend five back slaps followed by five chest compressions. Seek training in this if you have a child or will spend time around children - simply reading about it on the internet does not give you the practice needed to learn this simple and life-saving skill.

For medical professionals, the answer is simple: Do chest compressions on an infant when there is no pulse at the femoral or brachial artery. This assumes competency in a variety of skills including but not limited to pulse checks and oxygen delivery.

The American Heart Association is a nonprofit, voluntary health agency. Its main functions are publishing standards, as well as guides and certification for administering first aid, basic life support, and CPR.

Because in tertiary temprature is high so pressure is high as( PV=nRT)

CPR and early defibrillation can reduce the risk of damage to the brain from inadequate blood flow. Thus, they can increase the likelihood fo survival.

Switch when the person giving compressions is getting tired.

A person is mandated to preform CPR if it is a part of their job responsibility (whether paid or volunteer and they are on the job. For example, I was on the Ski Patrol (unpaid) and when I was on duty I was mandated to perform CPR if required. However, if I was driving home from the Ski Patrol and there was an accident and someone needed CPR, I am not mandated to perform CPR. But, I carry a breathing barrier in my car, and I would perform CPR on someone if needed.

If you touch the victim while an AED is delivering a shock, you too will receive a shock.

No. In order for you to show competence in first aid, an array of practical and decision making skills is required. This involves the technical aspect of CPR, immobilisation, oxygen administrations, among numerous other skills.

Also, an online environment cannot regulate authenticity (i.e. you could ask a doctor or paramedic to do the test for you).

For 1-person CPR the compression-ventilation ratio for children (and adults and infants) are 30 compressions to 2 breaths.

60

Directly over the heart, right between the nipples.

Next call 911 or the local emergency number.

So the electric currents from the AED do not transfer from the victim to yourself, thus, you yourself becoming a victim of shock if exposed to the currents.

Ventilation perfusion ratio is an indicator of how well the oxygen we breathe in is being transported through the lungs and into the blood system. A change from the normal value can indicate a disease/illness process that is causing less oxygen to get into the blood stream. Since our cells need oxygen in order to survive, this would obviously be a problem

The recommended rate is between 100-120 compressions per minute, so that works out to about one-and-a-half to two compressions per second

For an adult, compress the chest 1 1/2 - 2 inches.

CPR ratio is 30 compressions, 2 breaths.

USE CPR ON AN ADULT WHEN THEY ARE UNRESPONSIVE; ON A CHILD AND INFANT USE CPR WHEN THERE IS NO PULSE.