Inclusion Criteria:  undergoing hepatic resection Admitting service requests APS consult >18 years old and able to provide consent  Exclusion criteria:  pregnancy incarceration inability to communicate with the investigators and hospital staff severe hepatic disease chronic high-dose opioid use (defined as daily use for more than 4 weeks prior to surgery of at least the equivalent of 20 mg oxycodone); BMI > 40 kg/m2 allergy to study medications (lidocaine, ropivacaine)