FIRST AID AND EMERGENCY CARE LECTURE 7 HEMORRHAGE Definition Hemorrhage means extravasations of blood Extravasation is the leakage of blood from a vessel into tissues surrounding it; can occur in injuries or burns CLASSIFICATION OF HEMORRHAGES External Hemorrhage Internal Hemorrhage EXTERNAL HEMORRHAGE Types of external bleeding Arterial bleeding: loss of blood from arteries Blood loss is rapid and profuse The color of blood is bright red Blood spurts as the heart beats Venous Bleeding: loss of blood from veins Blood loss is a steady flow The color of blood is dark Capillary Bleeding: loss of blood from capillary bed Blood flow is slow The color of blood is red but less bright Methods used to control external bleeding 1. Direct pressure: is the most effective method: Application of direct and firm pressure to the wound 2. Elevation of the affected limb 3. Pressure point on the artery 4. Splinting: used in sever laceration or cut extends over the length of the extremity. 6. Blood pressure cuff: the cuff is placed above the wound, and can be left for up to 30 min. 7. Mast Garments: pneumatic counter-pressure devices for serious abdominal bleeding 8. Applying Tourniquet: is a last resort used only when other methods to control bleeding have failed. INTERNAL HEMORRHAGE Causes of internal hemorrhage 1. Deep chest or abdominal wound 2. Any cut into muscle or fracturing of bone 3. Bleeding ulcers Detecting internal bleeding 1. Assume internal bleeding whenever the following are present Wound that have penetrated the skull Blood in the ear Vomiting or coughing up blood 3. Wound that have penetrated the chest or abdomen Large areas of bruised abdomen Abdominal tenderness, rigidity, or spasm Blood in urine Rectal bleeding Bone fractures mainly the long bone of the arm or thigh.