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CT Scan
The nasal valve angle is the narrowest part of the nasal airway. Any restriction of this area considerably limits airflow. In this patient nasal valve angle increased to healthy range (10°-15°). This results in a 33% increase in the nasal valve area from 0.6cm to 0.8cm .
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Before Simulated Surgery
After Simulated Surgery
Before Simulated Surgery
After Simulated Surgery
No Airflow
0.0 L/min < Airflow < 0.5 L/min
0.5 L/min < Airflow < 1.5 L/min
3.5 L/min < Airflow < 5.0 L/min
1.5 L/min < Airflow < 3.5 L/min
5.0 L/min < Airflow < 7.0 L/min
7.0 L/min < Airflow
Airflow Distribution
After simulated surgery total airflow in the right airway increases by 120% from 5L/min to 11L/min. More importantly the olfactory bulb receives good ventilation of 1L/min.
Airflow Pressure
After simulated surgery pressure drop increases from -11Pa to -9Pa in the nasal valve region despite the higher flowrate of 11L/min post simulated surgery as opposed to 5L/min before simulated surgery.
Before Simulated Surgery
After Simulated Surgery
After Simulated Surgery
Before Simulated Surgery
Airflow Velocity
Airflow velocity remains within healthy parameters after simulated surgery. Maximum airflow velocity is 1.6m/s in the left airway and 2L/min the right airway. In both airways an average velocity of 0.8m/s is achieved in the turbinate region at 4cm from the nostril.
Airflow Temperature
After simulated surgery temperature reaches a value of 35°C (left) and 33°C (right) at a distance of 5cm from the nostril tip.
Before Simulated Surgery
After Simulated Surgery
After Simulated Surgery
Before Simulated Surgery
Airflow Humidity
Air enters the nasal cavity at 28% humidity. As air temperature increases humidity decreases to 8%.