Page 15 - World Journal of Laparoscopic Surgery

Comparative Study of the Effect of Various Bariatric Surgery Methods

Fig. 4: Comparison of mean NSF score in control group during follow-up Fig. 7: Comparison of the frequency of fatty liver grade in the RY gastric
bypass group during follow-up

Fig. 5: Comparison of the frequency of fatty liver grade in the gastric Fig. 8: Comparison of the frequency of fatty liver grade in the control
sleeve group during follow-up group during follow-up

showed a significant difference in the mean BMI of patients in
different groups before and after surgery (p <0.001). The mean BMI
of patients in all three groups decreased significantly 12 months
after surgery compared to before surgery (p <0.001). The percentage
of decrease in patients’ BMI from before surgery to 12 months after
surgery was 33.53, 34.95, and 32.77% in the gastric sleeve, mini-
gastric bypass, and RY gastric bypass groups, respectively. However,
in the nonsurgical group, the baseline BMI increased by 6.20% until
12 months later. Therefore, the highest decrease in patients’ BMI
was observed in the mini-gastric bypass group with 34.95%.
According to the Kolmogorov–Smirnov test, AST had a normal
distribution in all four groups (p >0.05). The results of ANOVA test
showed a significant difference in the mean AST of patients in
different groups before and after surgery. The mean AST of patients
in all three groups had an insignificant decrease 12 months after
surgery compared to before surgery. The percentage of reduction
in AST of patients from 12 months after surgery compared to before
Fig. 6: Comparison of the frequency of fatty liver grade in the mini-gastric surgery was 8.69, 2.24, and 0.81% in gastric sleeve, mini-gastric
bypass group during follow-up bypass, and RY gastric bypass groups, respectively. However, in the

World Journal of Laparoscopic Surgery, Volume 15 Issue 2 (May–August 2022) 111