Abstract

The present investigation was carried out in an attempt to clarify the value of lateral skull and frontal radiographs as a means of evaluating nasal respiratory function. The study material consisted of 162 children between the ages of 6 and 12 years, with a sex distribution of 40 percent female and 60 percent male. The capacity of the nasal airway was both measured and subjectively evaluated, using lateral skull radiographs of twenty-eight children between the ages of 8 and 12 years without adenoid vegetations at the posterior nasopharyngeal wall. The size of the adenoids was measured and evaluated in a similar fashion. In addition, they were graded clinically by posterior rhinoscopy. The nasal airflow was measured according to a method previously described by Aschan and associates 1 and subsequently modified by Linder-Aronson. 7 In this way, simultaneous recordings of the airflow velocity and pressure gradient between the nasopharynx and nostrils were obtained. Subsequent correlation analyses gave the following results: 1. 1. A significant relationship between the size of the adenoids as measured on lateral skull radiographs and assessed clinically. 2. 2. A negative relationship between the size of the adenoids as measured on lateral skull radiographs and the nasal airflow. 3. 3. A significant relationship between the capacity of the nasal airway as measured on frontal radiographs and the nasal airflow. 4. 4. A reasonable assessment of the nasal airflow by subjective evaluation of airway capacity from frontal radiographs.

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