LAP after the ASV
After the ASV, the LAP during the inspiratory phase significantly
increased to 8.9 ± 4.1 mmHg as compared to that before the ASV (4.9 ±
5.4 mmHg) (p < 0.01) (Figure 2 ). The Δ lowest LAP
between that before and after the ASV support was 6.6 ± 5.2 mmHg. The
lowest LAP increased in 47/51 (92.2 %) patients with the ASV, and
remained unchanged in the other four patients (Figure 3 ). Out
of 37 patients with a negative lowest LAP value before the ASV, in 30
(81.1 %) patients the lowest LAP value turned out to be positive after
the ASV. Even in the remaining seven patients, the lowest LAP increased
to 4.6 ± 3.5 mmHg, but it did not reach more than 0 mmHg (from -6 to 0
mmHg). There were no significant differences regarding the patient
characteristics or comorbidities between the patients with and without a
negative lowest LAP value after the ASV (Table 3B ). The BIS
value at the time of the LAP measurement was similar between the two
groups (65.0 ± 13.6 vs. 69.0 ± 12.5, p = 0.75). The male gender also was
not observed very frequently in the patients with a negative lowest LAP
value (7/7 vs. 34/41, p = 0.32).