THE INTLUENCE OF NASAL OBSTRUCTION ON THE EFFICIENCY OF WORK By T. OKUDA

The author studied the influence of nasal obstruction on the efficiency of work. Conclusions were as follows: 1. In those with nasal obstruction, there were obvious subjective symptoms and these were aggravated by the labor. 2. Subjective feeling of fatigue was influenced by the nasal obstruction. 3. In postoperative cases, those without improvement of nasal obstruction had more fatigue feeling than those with improved nasal obstruction. 4. Those with nasal obstruction showed higher value in flicker fatigue test even before the start of the work and the value remarkably became higher compared with those in normal in- dividuals. Effect of mental work was not great as that of muscular work. 5. These evidences were re:ognized also in experimental acute nasal obstruction. 6. Decreased repiratory function was observed in 30% of the case with chronic nasal ob- struction. 7. Decreased respiratory function was seen among those with postoperative residual nasal obstruction in similar frequency among the non-surgical patients with nasal obstruction. In those without nasal obstruction, the respiratory function was within normal limits. 8. Blood chemistry of those with nasal obstruction showed generally, low oxygenation, low oxygen saturation, and also slight decrease of total carbon dioxide and alkali reserve. 9. From above mentioned evidences, it seems like easy fatiguability in those with nasal obstruction is mainly due to anoxic anoxia caused by decreased respiratory function.