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Compliance with nedocromil sodium and a nedocromil sodium/salbutamol combination. Compliance Working Group.

Author(s): Braunstein GL, Trinquet G, Harper AE

Affiliation(s): Laboratoires Fisons S.A., Tour PFA, Paris la Defense, France.

Publication date & source: 1996-05, Eur Respir J., 9(5):893-8.

Publication type: Clinical Trial; Randomized Controlled Trial

Nonadherence to prescribed preventive medication is common in asthma. We wanted to assess whether the combination of a beta 2-bronchodilator with an anti-inflammatory treatment in the same metered-dose inhaler (MDI) with a regular dosing schedule might improve compliance. A double-blind study was used to compare use (two actuations four times daily for 12 weeks) of 2 mg nedocromil sodium (n = 101) with a combination of 2 mg nedocromil sodium and 100 micrograms salbutamol (n = 100) in mild-to-moderate asthma patients (mean age 42 +/- 14 yrs; 98 males and 103 females). Compliance was measured using the electronic Nebulizer Chronolog (NC) device, change in MDI canister weight, patient questionnaire and physician assessment. The mean +/- SD number of actuations per day for nedocromil sodium and the combination during the primary period of assessment (Weeks 11-12) was 4.2 +/- 2.6 and 4.6 +/- 2.5 (NC), 5.3 +/- 2.1 and 5.3 +/- 2.0 (canister weight), and 7.5 +/- 1.3 and 7.4 +/- 1.3 (questionnaire), respectively. Physician assessment rated compliance as "good" to "excellent". The first and final days of the period were not used in the NC analysis to exclude part-days of treatment and drug-dumping (repeated actuations without inhalation), and may account for the difference between NC and canister weight results. The mean number of two-actuation doses per day determined from the NC was 2.1 +/- 1.3 for nedocromil sodium and 2.4 +/- 2.1 for the combination. Thirty five percent (nedocromil sodium) and 34% (combination) of the patients were compliant (6-10 actuations per day for > or = 60% of the days). We conclude that compliance is poor in asthma, electronic recording revealed the dumping phenomenon and, in this study, the combination of an inhaled beta 2-bronchodilator with a preventive treatment did not improve compliance over a three month period in patients with mild-to-moderate asthma.

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