Hemidiaphragmatic excursion during the sign test
paresis, hemidiaphragmatic paresis
PARESIS
Diaphragmatic movement was evaluated by real-time M-mode ultrasonography of the ipsilateral hemidiaphragm. Patients were examined in an upright seated position. The range of diaphragmatic movement from the resting expiratory position to deep inspiration (sigh test) was recorded before and 30 min after the block. The baseline preblock diaphragm movement was 5.9 ± 1.2 cm and 6.2 ± 1.1 cm in group I and group II, respectively, and the diaphragm movement was 5.6 ± 1.2 cm and 2.3 ± 0.9 cm in group I and group II, respectively, after 30 min of block. The reduction in diaphragmatic movement in group II was significantly less than that in group I (P < 0.01). The incidence of hemidiaphragmatic paresis in group II was 92%, but no paresis was observed in group I (Table 
Hemidiaphragmatic excursion during the sigh testData are expressed as the mean ± standard deviation

