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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 249 (1992), S. 44-46 
    ISSN: 1434-4726
    Keywords: Nasal airflow ; Septal perforation ; Rhinomanometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In an attempt to determine the influence of septal perforations on nasal airflow, nasal resistances were measured with active posterior rhinomanometry and compared before and after closure of asymptomatic septal perforations in five patients. No significant differences were found in the nasal resistances before and after closure of perforations either on inspiration or expiration. All patients were also unaware of any perceptive changes in nasal patencies after closure of the perforations.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 250 (1993), S. 249-252 
    ISSN: 1434-4726
    Keywords: Nasal resistance ; Rhinomanometry ; Nasal patency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Rhinomanometry is well established as a useful clinical method for objective assessment of nasal patency, although several expressions of nasal patency have been reported and universal standardization has not been achieved. In this communication, nasal resistances were calculated from the equation R = ΔP/V (R; resistance; ΔP; transnasal differential pressure; V; nasal airflow) at ΔP 100 Pa and at peak flow. Time-averaged nasal resistances and integrated nasal patencies were measured in 350 adult patients by Rhinorheograph MPR-1100 and processed by a NI-101 computer program. The values from the equation R = ΔP/V at ΔP 100 Pa were slightly lower than those from the same equation at peak flow or those from the time-averaging method. Correlations between the values of nasal resistance at peak flow and the time averaging method were very close to the line of identity. No significant correlations were demonstrated between integrated nasal patency and the values from the other three expressions. The differences of the results from these expression are discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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