Biology 8 Lesson 19: Practice: First aid to stop bleeding
1. Summary of theory
a. Review knowledge
b. Preparing instruments
- Tape: 1 roll.
- Gauze: 2 pieces.
- Cotton: 1 small roll.
- Rubber band or fabric cord.
- A soft cloth (10 – 30 cm).
2. Practice Procedure
2.1. Capillary and venous bleeding
– Practice dressing the wound on the palm of your hand
+ Steps to take:
- Cover the wound with your thumb for a few minutes (until the bleeding stops).
- Disinfect the wound with iodine alcohol.
- When the wound is small, a bandage can be used (available at drug stores).
- When the wound is large, put some cotton in between the 2 gauze pads and then put it in the wound and tie it with a bandage.
Note: After the dressing, if the wound is still bleeding, it should be taken to the emergency room immediately.
2.2. Bleeding in the arteries
– Practice dressing the wound on the wrist
– Use your thumb to detect the brachial artery, when you see a clear pulse, squeeze it hard to stop bleeding in the wound for a few minutes.
– Tie a tourniquet: use a rubber band or soft cloth to tie it close to but higher than the wound (towards the heart), with enough pressure to stop bleeding.
– Disinfect the wound (if possible), put gauze and cotton on the wound and then bandage it.
– Take him to the emergency room immediately.
- Only bleeding wounds of the arteries of the arms (legs) can be used with tourniquets.
- Every 15 minutes loosen the tourniquet and re-tie as the tissue under the tie can die due to lack of O2 and nutrients.
- If the wound is bleeding in another location, apply pressure only to the artery near the wound, but toward the heart.
3. Report on the practice results of the groups
The groups take turns to evaluate the performance report
First and last name ………….
– After completing the practice process of this lesson, students need.
- Differentiate the right types of bleeding.
- Understand first aid procedures to stop bleeding.
- Practice observation skills, team cooperation, and practice correct operations.
- Practice skills in cooperation, behavior, problem solving, information gathering and processing, taking on tasks, writing reports.
- Train the sense of community support when encountering a situation that requires first aid to stop bleeding.