Figure 5

Number of tests required to obtain a clear LFCT. The numbers of tests required to obtain a clear LFCT were shown in Fig. 5. The number of patients in whom we could obtain a clear LFCT value in the first session was 35/46 patients (76.1%), 41/46 patients (89.1%) by the second session, 43/46 patients (93.5%) by the third session, and 44/46 patients (95.7%) by the fourth session. LFCT: lung to finger circulation time.