Explanation

In cases of trauma or suspected spinal injury, the jaw thrust maneuver is the preferred method to open the airway without moving the neck, as neck movement could worsen a cervical spine injury.

- A. Neck extension — Risky in trauma, may cause spinal damage  

- B. Neck flexion — Not used to open the airway  

- C. Chin lift — Used when no spinal injury is suspected  

- D. Jaw thrust —  Safest and recommended in trauma cases with possible neck injury

Explanation

During adult CPR, effective chest compressions should depress the chest by at least 2 inches (5 cm) but not more than 2.4 inches (6 cm).

This depth helps maintain adequate blood flow to vital organs.

- A. 1 inch — Too shallow for effective circulation.  

- C & D. 3 or 4 inches — Too deep and may cause injury. 

Explanation

In case of severe bright red bleeding (which suggests arterial bleeding), the most important first aid step is to apply direct pressure to the wound using any clean cloth or dressing.

This helps control bleeding until medical help is available.

Other options:

- B. Rinsing is for minor wounds, not active arterial bleeding.  

- C. Ice may help reduce bleeding but is not a substitute for direct pressure.  

- D. Hanging the hand down increases bleeding due to gravity and must be avoided.

Explanation

In any suspected cervical spine injury (especially in unconscious trauma patients), the neck must be immobilized immediately to prevent spinal cord damage.

Do not move, flex, or extend the neck until proper evaluation (e.g. imaging) rules out injury.

Key First Aid Principle:  

Stabilize the cervical spine and maintain airway with jaw-thrust maneuver if needed — not head-tilt/chin-lift, which can worsen spinal injuries.

Explanation

Important Parameter in Fracture/Dislocation:

   - While swelling, pain, and movement are important, the most critical parameter is checking distal pulses to assess blood circulation beyond the injury site

Explanation

 Hand Placement During CPR:

   - For effective chest compressions, hands should be placed in the center of the chest, specifically on the lower half of the sternum, between the nipples.

Explanation

According to American Heart Association (AHA) guidelines, for adults and children (single rescuer), the correct CPR ratio is 30 compressions to 2 breaths.

Explanation

For a choking child (age 1 to 8 years), the recommended first aid is to perform back blows to help dislodge the obstruction.

Finger sweeping (C) is not advised unless you can see the object clearly.

Mouth to mouth breathing (A) and cardiac compressions (B) are part of CPR, not the immediate step for choking.

Explanation

For suspected fractures without external wounds, the best immediate first aid is to immobilize the injured limb (apply support or splint) to prevent further injury and reduce pain, then promptly refer the patient to an orthopedic specialist for definitive management.

Painkillers alone or applying heat pads are not appropriate first aid measures in acute trauma cases.

Treating the fracture fully at primary care is not advised without specialist input.

Explanation

The most helpful first aid measure for a snakebite is to Position the patient with wound area below the level of heart 

This action helps to slow the spread of the venom through the bloodstream to vital organs.

The patient should remain calm and still, and the affected limb should be kept immobilized at or below heart level while waiting for medical professionals to arrive