Where can anatomic leaks occur when using a nasal mask?

Anatomic leaks during the use of a nasal mask primarily occur in the areas where the mask interfaces with the patient's face. The sides of the nose bridge, situated above the lip, represent a common location for leaks. This is due to the contours of the nose and the design of the mask; if it does not fit snugly along the nasal bridge or the surrounding areas, air can escape from the sides. Effective sealing is crucial for optimal ventilation, and any gaps can compromise the delivery of pressure support.

The other locations mentioned are less relevant for anatomic leaks with a nasal mask. For instance, while the top of the forehead may experience some pressure, it doesn’t typically lead to significant leaks associated with the mask's sealing capability. Under the chin, a nasal mask is not designed to cover, and consequently, leaks in that area are not typical. Lastly, the tip of the nose, while it may be in contact with the mask, doesn’t usually create significant seals or gaps that lead to leaks in the same manner as the sides of the nose. This makes the sides of the nose bridge a key area to monitor for effective use of a nasal mask in noninvasive mechanical ventilation.