Adult patients with recurrent tonsillitis seemed to be generally pleased with their tonsillectomy. The more symptoms they had prior to surgery, the greater was their improvement in quality of life. No other patient- or disease-related factors were associated with patient satisfaction.
This study was designed to explore the effect of nitrous oxide (N2O) on the amount of middle ear effusion. Seventy-six children referred for adenoidectomy or tympanostomy tube placement were divided into two groups in the basis of the method of anesthesia. One group of 39 children was ventilated with a mixture of 30% oxygen and 70% nitrous oxide, while the other group of 37 patients was ventilated with a mixture of oxygen and air. The amounts of middle ear effusion obtained in myringotomy were weighed and compared between these groups. Preoperative and perioperative tympanograms were performed. Ventilation with nitrous oxide caused a distinct rise in middle ear pressure. The amount of the middle ear effusion, however, remained the same in the two groups. It is concluded that the operating surgeon can rely on the myringotomy finding even when nitrous oxide anesthesia is used.
Acute otitis media detracted from quality of life when a generic measure was used. The mode of treatment used to prevent further recurrences of acute otitis media did not influence quality of life improvement.
Delays in the diagnosis of vestibular schwannoma have shortened since the introduction of magnetic resonance imaging. Longer diagnostic delays do not seem to have significant consequences.
A method to assess nasal airflow resistance is presented that provides a continuous resistance value and applies a novel minimally obtrusive measurement technique. Instead of calculating the resistance once for each breathing cycle conventionally, it is calculated for each signal sample at any sampling frequency. The continuous pressure recording is produced with a nasopharyngeal catheter inserted 8 cm deep along the floor of the other nasal cavity and the flow recording is produced with respiratory effort bands. A least-mean-square (LMS) extension for the resistance model of Broms is developed that dynamically adapts to the time-varying characteristics of the nasal functioning and produces the continuous resistance values. Experimental results are shown that demonstrate the uniqueness and applicability of the new technique in assessing quickly changing resistance in a histamine/xylometatsolin challenges, the differences between normal and symptomatic patients, and the effect of nasal treatment of patients.
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