Hi for any nurse anesthetist who knows the answer to this I would appreciate the info: Is there a formula that adds up the lidocaine dosage in tumescent fluid used for liposuction and the I.V. lidocaine used during the induction of anesthesia that allows you to find a safe maximum dosage for each when used together? Someone told me there is but I have not been able to find it. Any help would be appreciated. Thanks.