Aspartate Transaminase (AST) Change
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure
To assess the liver function change from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
Alanine Transaminase (ALT) Change
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure
To assess the liver function change from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
Alkaline Phosphate (ALK)
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure
To assess the liver function change from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure
Total Bilirubin
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure
To assess the liver function change from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
Albumin
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
To assess the change in liver function from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure versus before the procedure)
Prothrombin Time (PT)
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
To assess the change in liver function from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
Partial Thromboplastin Time (PTT)
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
To measure the change of PTT from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
Indocyanine Green (ICG) K Value
from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure)
To assess the liver function change from before surgery to the time when they lost 60% of their preoperative excess weight or weight loss had plateaued after this procedure (after the procedure minus versus before the procedure). ICG-k value is the slope of the decay curve of the serum ICG clearance graph, which is used to assess the liver function as it represents the rate of disappearance of ICG from blood as the liver exclusively distracts it. The lower k value means a lower rate of ICG clearance, indicating a worse liver function.
Number of Subjects of Nonalcoholic Steatohepatitis (NAS Steatosis)
when patients lost 60% of their preoperative excess weight or weight loss had plateaued.
To compare the distribution of NAS steatosis stage from before surgery to when patients lost 60% of their preoperative excess weight or weight loss had plateaued. The NAFLD activity score (NAS) from the NASH clinical Clinic Research Network is the unweighted sum of scores for steatosis, lobular inflammation, and ballooning hepatocyte degeneration, and ranges from zero to eight points. The histological reporting for grading steatosis was based on a scale of 0 to 3, with 0 being no steatosis (\<5%), 1 being mild steatosis (involving 5-33% of the biopsy specimen), 2 being moderate steatosis (involving 34-66% of the specimen), and 3 being severe (involving \>66%).
Number of Subjects of Nonalcoholic Steatohepatitis Lobular Inflammation
when patients lost 60% of their preoperative excess weight or weight loss had plateaued.
Lobular inflammation was similarly scored by number of foci per 200× magnification field (0 no foci: 1 \< 2 foci: 2, 2-4 foci; 3, \>4 foci) on biopsy specimen under microscope. This outcome was compared on its distribution before the surgery and once patients lost 60% of their preoperative excess weight or weight loss had plateaued.
Fibrosis
after surgery once they lost 60% of their preoperative excess weight or weight loss had plateaued
Fibrosis was measured from before surgery to after surgery once they lost 60% of their preoperative excess weight or weight loss had plateaued through biopsies
Nonalcoholic Steatohepatitis (NAS) Hepatocyte Balloon
once patients lost 60% of their preoperative excess weight or weight loss had plateaued after surgery
Ballooning hepatocyte degeneration was scored as 0 (absent), 1 (few, difficult to identify), 2 (many, easily identified). This was to assess the change in the distribution of NAS hepatocyte ballon between before the surgery and once patients lost 60% of their preoperative excess weight or weight loss had plateaued