Bleeding it is the deterioration of vascular integrity and the exit of blood through the veins (Kutlu, 1997).

The first symptoms of bleeding include paleness in skin color and cold sweating. Then there are signs of shock and death if no precautions are taken (Somyurek, 1990, Olympia, Wan and Avner, 2005). If a normal adult loses 1-1.5 lt, the life of the individual is in danger (Clıne, 2002).

The severity of bleeding; 

The speed of bleeding, 

The amount of bleeding,

The area in the body where blood flows, 

The type of blood that bleeds, 

The duration of bleeding, 

The physical condition and age of the person,

It depends on the characteristics of the bleeding organ (Kakillioglu et al.,2002; T.C.Ministry of Health, 2006; Plate and Somyurek, 2008).

The most common cause of preventable death is internal bleeding from the uncontrolled chest, abdomen and pelvis (Ertekin et al., 2005). 13%-15% of the human body is blood. In a normal adult person there is about 6 liters of blood. If 10% of the blood in the circulatory system is lost as a result of bleeding, life could be in danger. 10% of the blood is about 600 ml in the adult, 250 ml in the child, 30 ml in the baby (Tabak and Somyurek, 2008).

Hemorrhages can be classified in several ways: Bleeding according to where the blood flows: “External Bleeding” and “Internal Bleeding” are hemorrhages seen in two ways.  External Bleeding is bleeding that is outside the body.  Internal Bleeding is bleeding that is out of the vein but flows into the body (Fly,2007; Earth, 2006). A bleeding in the mouth, anal region or urine may be a sign of serious organ injury or disease (Ozcan and Turkes, 2007).

Arterial hemorrhages: The color of the blood is bright red, it squirts with rhythmic pressure suitable for the beats of the heart. It can be controlled by raising the bleeding area above the heart level, applying local pressure or applying pressure to the nearby artery.

 Venous (vein) hemorrhages: The color of the blood is dark red, the bleeding is not in the style of squirting, but in a continuous flowing manner. Bleeding can be controlled by dressing the bleeding place and keeping it above the heart level.

Capillary bleeding: Bleeding; from multiple bleeding foci on the wound, it is in the form of leakage. Bleeding can stop spontaneously with clotting without the need for any prevention (Fly,2007; Earth, 2006; Guler and Bilir, 1994; Company Head and Ark., 2007; T.C Ministry of Internal Affairs, 1991).

Local pressure applications: It is the practice of stopping bleeding with finger or bandage as a temporary measure on bleeding wound or vein.
b. Keeping the bleeding area above heart level
c. Finger pressing on the artery near the wound
d. Applying pressure to the vessel with elastic bandage or elastic tube
e. Applying air-pressurized spousals
f. Tourniquet (suffocating winding) is a common practice (Tabak and Somyurek,2008)
Areas of The Body Where Pressure Is Exerted to Stop Bleeding
Arterial hemorrhages are spurt due to blood pressure. Therefore, a lot of blood is lost in a short time. In such bleeding, the main thing to do is to apply pressure to an upper artery area, which is close to the bleeding place or the bleeding place. There are pressure points in the body designated for this purpose. These points are :
Front side point of the neck (Compression of the carotid artery)
Under the collarbone (compression of the Subclavia artery)
Upper front point of the ear (compression of temporalis-superfacialis artery)
– Middle front point of the abdomen (compression of the Middle Abdominal artery)
Upper ins in the arm (compression of the Brachialis artery)
Groin (compression of femoralis artery) (Kakillioglu et al.2002, Tabak and Somyurek,2008).
First Aid in External Bleeding
-The consciousness and breathing of the patient/injured should be evaluated,
-Direct pressure should be applied on the wound with a clean piece of cloth or gauze, if the bleeding does not stop,
-The pressure should be increased by placing a second cloth without lifting the first gland,
-If necessary, the pressure should be increased and maintained without lifting the bloodied glands wrapped with bandages,
-Pressure should be applied to the pressure point closest to the bleeding area,
-If it is not enough to apply pressure, the turnstile should be applied,
-If the bleeding is in the arms or legs and there is no suspicion of fractures, the bleeding area should be kept above the heart level,
-The patient/injured should be given a shock position (the patient/injured is laid on their back and their feet are raised up 30cm),
-The bleeding area should be covered with the patient/injured to be left outside,
-Information about the applications should be written on the patient/injured person,
-Signs of life should be checked at regular intervals,
-The patient/injured should be referred to a health care facility as soon as possible (Fly, 2007; Polat and Turaci,2003)