Airway manoeuvre identification approach:The image shows the rescuer's hand on the forehead applying backward tilt while the other hand lifts the chin superiorly -- this is the $\textbf{Head Tilt-Chin Lift}$ manoeuvre.
Mechanism: In an unconscious patient, the tongue falls posteriorly due to loss of muscle tone, occluding the pharynx. Head tilt + chin lift displaces the tongue anteriorly, opening the airway.
Indications and distinctions:
- Head Tilt-Chin Lift: used when no cervical spine injury is suspected (standard BLS)
- Jaw Thrust: used when cervical spine injury is suspected (no neck extension needed)
- Triple airway manoeuvre = Head tilt + Jaw thrust + Mouth open (used in anaesthesia)
The triple airway manoeuvre maintains a patent upper airway by combining all three actions and is used when mask ventilation is being performed.
\[\boxed{\text{Head tilt, chin lift}}\]