Purpose: Many types of antihistamines used for the treatment of allergic rhinitis induce drowsiness as a side effect. Whether or not patients taking the internal drugs know of this untoward effect is a matter of importance. Recently we conducted a questionnaire survey to know how many patients are aware of this.Method: The subjects were 257 patients who visited our hospital for treatment of alergic rhinitis and took the prescription from February through March this year. The patients filled in a questionnaire given at the window of the dispensary. All the participants in this survey gave their informed consent.Results: Effective replies (90.3%) were obtained from 232 patients (mean age: 53.5±17.5; sex: 85 males and 147 females). Of those respondents, 45 individuals (19.9%) said they did not know that the antihistamines produce drowsiness. Furthermore, the survey found that 24 out of the 45 individuals were actually taking the type of antihistamine that caused drowsiness and 21 individuals were not given any explanation of the side effect by their doctors. The patients said that if they knew of the side effect they would not have taken the medicine. Moreover, it was found that 10 out of the 21 patients drove their cars while they felt drowsy.Conclusions: The survey revealed the hard fact that the drowsiness as side reaction the patients might have after taking antihistamines was made light of. The findings brought home to us the importance of giving clear directions to the patients about the medicine and the precaution against the side effects.
Drowsiness ; Surveys ; Antihistamines ; adverse effects ; Effective

Background: Currently, supplementary serological testing for β-D glucan (BDG) is often selected to diagnose deep mycosis in care covered by the health insurance in Japan. The Wako method used by our center has low sensitivity, and different studies have used different cut-off values due to factors that cause false positives and false negatives. One possible cause of false negatives is the use of platelet-rich plasma (PRP) as the sample material. Because phagocytic white blood cells (WBC) are precipitated by centrifugation and only plasma is measured, it seems unlikely that the actual amount of BDG is being measured when using PRP. Further, a frequent cause of false positives is contamination from blood products and gauze containing BDG. To resolve these issues, the blood cell separator, hydroxyethyl starch, is used to precipitate only the red blood cells to obtain leukocyte-rich plasma (LRP).We hypothesized that it might be possible to improve the diagnostic rate of deep mycosis by measuring the BDG content of plasma containing WBC and fungal components and by comparing the BDG content of PRP and LRP measured simultaneously. Materials and Methods: Healthy human blood, albumin-added blood, wrung-out gauze fluid-added blood, and fungal solution-added blood were prepared, and PRP and LRP were prepared using hydroxyethyl starch. The BDG content of each sample was measured using the Wako method and compared. In addition, PRP and LRP of fungal-added blood were Gramstained and examined under a microscope, and the number of WBCs and phagocytosed fungi was counted visually and compared. Results: Measuring the BDG content of LRP confirmed that there were no false positives with LRP, and in vitro experiments comparing albumin-added false-positive blood to fungal-added blood showed significant differences between PRP and LRP only in the fungal-added blood. Conclusion Calculating the BDG-ratio (LRP/PRP) by measuring both LRP and PRP may eliminate false positives and false negatives of true deep mycosis and improve the diagnostic rate.

Background: Currently, supplementary serological testing for β-D glucan (BDG) is often selected to diagnose deep mycosis in care covered by the health insurance in Japan. The Wako method used by our center has low sensitivity, and different studies have used different cut-off values due to factors that cause false positives and false negatives. One possible cause of false negatives is the use of platelet-rich plasma (PRP) as the sample material. Because phagocytic white blood cells (WBC) are precipitated by centrifugation and only plasma is measured, it seems unlikely that the actual amount of BDG is being measured when using PRP. Further, a frequent cause of false positives is contamination from blood products and gauze containing BDG. To resolve these issues, the blood cell separator, hydroxyethyl starch, is used to precipitate only the red blood cells to obtain leukocyte-rich plasma (LRP).We hypothesized that it might be possible to improve the diagnostic rate of deep mycosis by measuring the BDG content of plasma containing WBC and fungal components and by comparing the BDG content of PRP and LRP measured simultaneously. Materials and Methods: Healthy human blood, albumin-added blood, wrung-out gauze fluid-added blood, and fungal solution-added blood were prepared, and PRP and LRP were prepared using hydroxyethyl starch. The BDG content of each sample was measured using the Wako method and compared. In addition, PRP and LRP of fungal-added blood were Gramstained and examined under a microscope, and the number of WBCs and phagocytosed fungi was counted visually and compared. Results: Measuring the BDG content of LRP confirmed that there were no false positives with LRP, and in vitro experiments comparing albumin-added false-positive blood to fungal-added blood showed significant differences between PRP and LRP only in the fungal-added blood. Conclusion Calculating the BDG-ratio (LRP/PRP) by measuring both LRP and PRP may eliminate false positives and false negatives of true deep mycosis and improve the diagnostic rate.