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[Chronotherapy of bronchial asthma: circadian rhythms in asthmatic symptoms. Report I: Survey on chronobiology acrophase of asthmatic symptoms].

Abstract
We conducted a questionnaire survey on the onset time and frequency of asthmatic symptoms in adults with bronchial asthma who were regular clinic attendees in 17 sites in Chiba Prefecture, and analyzed 513 respondents. As a result, the frequency of wheezing was 54.6%, the highest of all symptoms. Feeling of chest discomfort was 32.2%, followed by asthma attack (13.8%), cough (8.7%) and dynpnea (6.8%). Asthmatic symptoms were highest from midnight to early morning, with the peak at around 4 o'clock am. The same pattern was seen regardless of the severity and types of asthma. This survey also showed that conventional anti-asthmatic therapies decreased the frequency of nightly asthmatic symptoms from the baseline: 7 times or more per week reduced from 44.9% to 16.1%, 3 times or more per week from 76.8% to 40.4%, and at least once per week from 94.4% to 71.5%. The results suggest that it is important to take another therapeutic strategy, which can administer medications at the appropriate time according to the circadian rhythms in asthmatic patients to better control asthma.
AuthorsM Kagami, H Tomioka, T Nakazawa, S Yoshida
JournalArerugī = [Allergy] (Arerugi) Vol. 50 Issue 6 Pg. 528-34 (Jun 2001) ISSN: 0021-4884 [Print] Japan
PMID11517515 (Publication Type: English Abstract, Journal Article)
Chemical References
  • Anti-Asthmatic Agents
Topics
  • Adult
  • Anti-Asthmatic Agents (administration & dosage)
  • Asthma (drug therapy, physiopathology)
  • Chronotherapy (methods)
  • Circadian Rhythm
  • Female
  • Humans
  • Male
  • Questionnaires
  • Treatment Outcome

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