
Figure 1.
Mallampatti test.

Figure 2.
LEMON Airway Assessment Method.

Figure 3.
Nasometer.

Figure 4.
Nasometer parameters.
Table I.
Cephalometric landmarks
| Cephalometric Landmark | Description |
|---|---|
| AA | Posterior wall of nasopharynx |
| Ba | Basion |
| C2i | The most anteroroinferior point on the body of the second cervical vertebra |
| FH | Frankfurt horizontal plane |
| LPW | Lower pharyngeal wall : Lower pharyngeal wall, intersection of the perpendicular line from V to the posterior pharyngeal wall |
| MPW | Middle pharyngeal wall, intersection of the perpendicular line from Uvula to the posterior pharyngeal wall |
| P | Porion |
| PNS | Posterior nasal spine |
| N | Nasion |
| UPW | Upper pharyngeal wall, point of intersection of the line perpendicular to the posterior pharyngeal wall from the posterior nasal spine. |

Figure 5.
Airway analysis by McNamara.

Figure 6.
Airway analysis by Preston CB, Lampasso JD, Tobias PV.

Figure 7.
Airway analysis by Shigetoshi Hiyama et al.