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"Positive pressure irrigation (Grossan Sinus Irrigator®)
retains a larger volume of solution and irrigated the sinuses more
consistently than other methods. Positive pressure irrigation
distributes saline solution reliably to the ethmoid and maxillary
sinuses and is distributed to the bilateral maxillary sinuses in
the majority of all subjects."
"Negative pressure irrigation (inhaled or "sniffed"
saline) Negative pressure irrigation is the simplest least expensive
irrigation method and is maintenance free, However, delivery with
this method is difficult to control and has the disadvantage of
preferentially irrigating the side of the nasal cavity. It tends
to irrigate one maxillary sinus or the other but not both."
"Nebulizer: The system uses technology previously applied
to oral nebulizing devices for delivery of drugs to the bronchopulmonary
system. It is comfortable and easy to use but is expensive, time
intensive requiring nearly 10 minutes per treatment. Of the three
treatment methods, the nebulizer gave the poorest results. Saline
distribution was the lowest and the nebulizer method did not distribute
the solution reliably."
Source: Laryngoscope 112: August 2002
"Conclusion: Judged solely on the basis of solution distribution
in the nasal sinuses, nasal irrigation is effective when either
positive pressure or negative pressure irrigation is used but is
ineffective when a nebulizer is used." Laryngoscope, 112:1394-1398,
2002
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