Regular Article
Comparison of Pulmicort®pMDI plus Nebuhaler®and Pulmicort®Turbuhaler®in asthmatic patients with dysphonia

https://doi.org/10.1053/rmed.1999.0762Get rights and content
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Abstract

Background. Dysphonia is a known local adverse effect of inhaled corticosteroids. This symptom was investigated by laryngoscopy and assessment in a voice laboratory. The effects of changing the treatment of patients with dysphonia, reported whilst using the pMDI, to pMDI plus Nebuhaler®or Tubuhaler®was also assessed.

Methods. Seventy-two patients reporting dysphonia and taking inhaled steroids from a pMDI entered a 12-week, open, parallel group study. Fifty-one completed the study per protocol; 26 in the Nebuhaler group [21 female, mean age 57 years (22–77)] and 25 in the Turbuhaler®group [18 female, mean age 58 years (21–81)]. A dysphonia diary card was completed weekly. Voice laboratory assessments and laryngoscopy were performed on entry and at 12 weeks.

Results. There were no differences in voice laboratory data, laryngoscopic evidence of disordered glottic closure and diary data between the two groups at 12 weeks. At study entry laryngoscopic appearances were normal in almost half the patients. Vocal cord bowing was rarely seen. Glottic closure changed in nine patients during the study period, but there was no correlation with voice symptoms. The trend of symptomatic improvement of voice status in the Turbuhaler®group did not correlate with voice laboratory assessments and laryngoscopic evidence of disordered glottic closure.

After 4 weeks, 40% of patients using Turbuhaler®and 8% in the Nebuhaler®group scored their voice status as better (P<0·02) but there was no significant difference between the two groups at 12 weeks (Turbuhaler®52%, Nebuhaler®23%,P =0·08).

Conclusion. This study does not support the view that dysphonia in asthmatics inhaling corticosteroids is usually caused by myopathic bowing of the vocal cord muscles.

Keywords

asthma
dysphonia
Nebuhaler®
Turbuhaler®
Pulmicort®
pMDI
largngoscopy
inhaled steroids.

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Correspondence should be addressed to: M. H. Dewar, Respiratory Unit Ward 10) Crewe Road South Western General Hospital, Edinburgh, EH4 2XU United Kingdom. Tel.: +44 131 537 1008; Fax +44 131 343 3989.