Results:
The mean age of the groups was 37.35 ± 10.91 years, and the mean BMI was
44.70 ± 4.37 kg/m2. While 17.5% of the patients had a
history of operation, 82.5% had not previously undergone surgery. The
mean duration of exposure to IAP was 85.18 ± 27.1 minutes, while the
mean duration of hospital stay was 5.98 ± 1.23 days (Table 1).
Preoperative and postoperative kidney and liver function values of the
patients were within the reference range in both groups (Table 2). There
was no statistically significant difference between the groups in terms
of age, BMI, duration of exposure to pressure, and length of hospital
stay (p > 0.05) (Table 3). The direct bilirubin value
measured at the sixth hour was significantly higher in the 10 mmHg
pressure group compared to the 13 mmHg group (p < 0.05), but
there was no significant difference in terms of the mean measurement of
the remaining blood parameters (p > 0.05) (Table 4).
In both groups, while there was a significant decrease in the IJV
diameter and flow measurement values at t2 compared to t1, a
significant increase was observed at t3 compared to t2 (p <
0.05). In addition, at all measurement times, the IJV diameter and flow
measurement averages were significantly higher in the 10 mmHg pressure
group compared to the 13 mmHg group (p < 0.05) (Table 5). In
the latter, as BMI increased, the IJV diameter (cm) measured at t1 and
t3 significantly decreased compared to t2 (p <0.05), and when
the duration of exposure to pressure (min) increased, the IJV flow
values (mm/sec) measured at t1 and t3 were significantly higher compared
to t2 (p < 0.05) (Table 6).