Article

This study aimed to assess cough effectiveness after a stroke and to
propose a bedside screening test. DESIGN: Patients who had had ischemic
hemispheric stroke were recruited and followed up for 2 mos. Maximum phonation
time (MPT) was assessed during the first 10 days. Aspiration was evaluated on
days 2 and 10 after stroke. Lung function testing was performed on day 10. Peak
cough flow less than 160 liters/min was defined as the criterion for cough
ineffectiveness. Correlation between peak cough flow and MPT was determined, and
the optimal cutoff value relating MPT to effective cough was determined using
receiver operating characteristic analysis when referring to peak cough flow.
RESULTS: Of the 70 patients, 6 developed pneumonia (mean time, 1.7 +/- 2.4 days).
Lung function assessment in 32 cases revealed general reduced cough
effectiveness. MPT was correlated with peak cough flow (r = 0.413, P = 0.025),
and an MPT cutoff of 10 secs was identified. Forty-seven patients were able to
perform MPT on day 2; 49 were able to perform on day 10. Patients with MPT of 10
secs or longer had less frequent aspiration on both day 2 (5.9% vs. 36.7%, P =
0.034) and day 10 (2.9% vs. 26.6%, P = 0.026). CONCLUSIONS: Cough effectiveness
was reduced at the time of greatest risk for pneumonia. MPT provides a reliable
bedside screening test of cough effectiveness.

Langue : ANGLAIS