PT  - JOURNAL ARTICLE
AU  - Ana Balañá
AU  - Juana Martínez Llorens
AU  - Pilar Ausin
AU  - Mireia Admetllo
AU  - Mohamed Kallauchi
AU  - Laura Gutiérrez
AU  - Joaquim Gea
TI  - Influence of different factors in maximal nasal inspiratory pressure (SNIP) values in healthy volunteers
DP  - 2013 Sep 01
TA  - European Respiratory Journal
PG  - P1269
VI  - 42
IP  - Suppl 57
4099  - http://erj.ersjournals.com/content/42/Suppl_57/P1269.short
4100  - http://erj.ersjournals.com/content/42/Suppl_57/P1269.full
SO  - Eur Respir J2013 Sep 01; 42
AB  - Inspiratory muscle force is usually evaluated through the maximal inspiratory mouth pressure during static manoeuvre (MIP). Nevertheless, the lack of coordination between the patient and the technician hampers the correct evaluation of MIP. In order to overcome this limitation, a dynamic nasal manoeuvre has been described (SNIP). The SNIP test measures the maximal inspiratory pressure obtained in the nose during a sniff manoeuvre. However, the influence of methodological issues on the results of the SNIP have not been described in deep. Aim:To evaluate the relevance of three methodological factors on SNIP values. Method:35 healthy volunteers were included in a transversal blind study (11men, 28±11years). The nostril chosen for the study was selected according to the best SNIP value obtained. We analyse three different factors which could influence the results of the manoeuvre: open vs. occluded contralateral nostril, RV(residual volume) vs. FRC(functional residual capacity) for the initial lung volume, and visual feed-back incentive or not. Results:The SNIP values were significantly modified by either the visual stimulus or the occlusion of the contralateral nostril. However, lung volume chosen to initiate the manoeuvre did not affect the SNIP values.View this table:Conclusion:The technique to obtain the SNIP should be standardized since different methodological factors (such as visual feed-back and occlusion of the contralateral nostril) can modify the results.