Final answer:
To stop the spurting blood from the neck, direct pressure should be applied with a gloved hand. Profuse bleeding typically indicates a cut at least into the dermal layer. In emergencies without blood type testing, O negative blood is used for transfusions.
Step-by-step explanation:
A 21-year-old male with a large laceration to his neck and bright red blood spurting from the wound requires immediate medical attention. The priority in this situation is to control the bleeding. You should place your gloved hand over the wound (C) to apply direct pressure and potentially slow the bleeding until more advanced care is available. Medical professionals often teach that using a clean cloth or gauze is also ideal when available. Applying a pressure dressing (A) would be the next step after direct pressure has been established. Sitting the patient up (B) and applying 100% oxygen (D) are not the most immediate concerns when dealing with profuse bleeding from an arterial source.
When someone sustains an injury with a sharp object and notices blood, it indicates that the person has cut through at least the epidermis and into the dermis, where capillaries and tiny blood vessels are located.
Following a motor vehicle accident where a patient experiences severe bleeding and requires a blood transfusion without time for determining blood type, type O negative blood is generally transfused. This is because O negative is considered the universal donor type and is most likely to be compatible with all other blood types.