title: Significance of the effective remnant liver volume in major hepatectomies.
abstract: The aim of this study is to identify the minimum safe amount of effective remnant liver volume (ERLV) in patients undergoing a major hepatectomy. Thirty-eight consecutive major hepatectomies (resection of > or = 3 Couinaud segments) performed between July 1999 and March 2004 in which a frozen section liver biopsy was obtained were included. No patient had chronic viral hepatitis, cirrhosis, or cholestasis. The total liver volume (TLV) was calculated using the Vauthey formula, and the postsurgical liver volume (PSLV) was derived by subtracting the estimated volume of liver resected from the TLV. The PSLV minus the percentage of macrovesicular steatosis as nonfunctional liver was defined as the effective remnant liver volume (ERLV). Three groups of ERLV/TLV ratios (<30%, between 30% and 60%, and >60%) were correlated with liver resection type, mortality, complications, intraoperative blood transfusions, operative time, length of hospitalization, and mean value of liver function tests in the first 5 postoperative days. Comparisons between clinical parameters were performed by Pearson chi2 test. There was significant correlation between ERLV/TLV ratios and surgical resection type (P < 0.001), early postoperative mortality (P < 0.01), and complications (P < 0.003). The ERLV/TLV ratio may be a useful predictor of surgical outcome after major hepatectomy.
authors.affiliation: Department of Abdominal Transplantation, University of Pittsburgh Medical Centre European Medical Division, Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Italy.
authors.forename: Salvatore
authors.initials: S
authors.lastname: Gruttadauria
authors.forename: Fabio
authors.initials: F
authors.lastname: Vasta
authors.forename: Marta Ida
authors.initials: MI
authors.lastname: Minervini
authors.forename: Tommaso
authors.initials: T
authors.lastname: Piazza
authors.forename: Antonio
authors.initials: A
authors.lastname: Arcadipane
authors.forename: Amadeo
authors.initials: A
authors.lastname: Marcos
authors.forename: Bruno
authors.initials: B
authors.lastname: Gridelli
mesh_terms: D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006498:Hepatectomy / Q000009:adverse effects* / Q000379:methods*; D006801:Humans; D008099:Liver / Q000473:pathology / Q000502:physiology*; D008111:Liver Function Tests; D008113:Liver Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D008297:Male; D009929:Organ Size; D011183:Postoperative Complications / Q000175:diagnosis; D011336:Probability; D012189:Retrospective Studies; D018570:Risk Assessment; D016019:Survival Analysis