Do You Know First Aid?

Explanation
In this situation, giving up to five back blows between the choking person's shoulder blades is the best course of action. This technique, known as the back blows, can help dislodge the obstruction by using the force of the blows to create enough pressure to expel the object. It is a safer option compared to putting fingers down the throat, as this can potentially push the obstruction further down and worsen the situation. The Heimlich maneuver is also a valid technique for choking, but in this case, the back blows are recommended as the first step.

Explanation
In the case of suspected heart attack, it is recommended to sit the person in a comfortable position. This is because sitting upright can help relieve pressure on the chest and make breathing easier. It also allows the person to stay calm and reduces the risk of falling or injuring themselves further. Laying down flat may worsen the symptoms and make it harder for the person to breathe. Encouraging movement may also be dangerous as it can put additional strain on the heart.

Explanation
Applying direct pressure over the wound is the correct answer because it helps to control the bleeding. By applying pressure, it helps to compress the blood vessels and reduce the flow of blood. This can be done by using a clean cloth or bandage and applying firm pressure directly on the wound. This method is effective in stopping the bleeding until further medical assistance can be obtained. Putting the injured limb in cold water or giving aspirin are not appropriate treatments for a severe bleeding injury.

Explanation
In this situation, the most important thing to do is to check the man's airway to ensure that it is clear. This is because if his airway is blocked, he may not be able to breathe properly, which can be life-threatening. By checking his airway, you can assess if there are any obstructions and take appropriate actions to clear it if necessary.

Explanation
Performing CPR involves a combination of chest compressions and rescue breaths. The correct answer states that 30 compressions should be followed by two breaths. This is in line with the standard CPR guidelines, which recommend a compression-to-breath ratio of 30:2 for adult CPR. By providing 30 compressions, you ensure that the heart is being pumped effectively, while two breaths provide oxygen to the lungs. This ratio helps to maintain blood circulation and oxygenation during CPR, increasing the chances of reviving the individual.