Background
The optimal perioperative fluid resuscitation strategy for liver resections (LR) remains undefined. Goal-directed therapy (GDT) embodies a number of physiologic strategies to achieve an ideal fluid balance and avoid the consequences of over- or under-resuscitation.
Study Design
In a prospective randomized trial, patients undergoing LR were randomized to GDT using stroke volume variation (SVV) as an endpoint or standard perioperative resuscitation (STD). Primary outcome measure was 30-day morbidity.
Results
Between 2012 and 2014, 135 patients were randomized (GDT: 69 – STD: 66). Median age was 57yrs, and 56% were male. Metastatic disease comprised 81% of patients. Overall (35% GDT vs 36% STD, p=0.86) and Grade 3 morbidity (28% GDT vs 18% STD, p=0.22) were equivalent. Patients in the GDT arm received less intraoperative fluid (mean 2.0 L GDT vs 2.9 L STD, p<0.001). Perioperative transfusions were required in 4% (6% GDT vs 2% STD, p=0.37) and boluses in the postanesthesia care unit (PACU) were administered to 24% (29% GDT vs 20% STD, p=0.23). Mortality rate was 1% (2/135 patients; both in GDT). On multivariable analysis, male gender, age, combined procedures, higher intraoperative fluid volume, and fluid boluses in PACU were associated with higher 30-day morbidity.
Conclusions
SVV-guided GDT is safe in patients undergoing LR and led to less intraoperative fluid. While the incidence of postoperative complications was similar in both arms, lower intraoperative resuscitation volume was independently associated with decreased postoperative morbidity in the entire cohort. Future studies should target extensive resections and identify patients receiving large resuscitation volumes, as this population is more likely to benefit from this technique.