The Costotransverse block will be administrated to this group before induction of anesthesia. An intravenous patient-controlled analgesia device within morphine will be given to the patients postoperatively.

In this group, patients will receive only multimodal analgesic treatment including patient-controlled analgesia with morphine. No block will be performed.

patient controlled analgesia devices with tramadol

morphine consumptions for both group will be recorded

Changes in Numeric Rating Scale (NRS) at rest and on movement will be recorded at intervals. NRS is a unidimensional measure of pain intensity in adults. The NRS is a segmented numeric version of the visual analog scale (VAS) in which a respondent selects a whole number (0-10 integers) that best reflects the intensity of his/her pain. The 11-point numeric scale ranges from '0' representing one pain extreme (e.g. "no pain") to '10' representing the other pain extreme (e.g. "pain as bad as you can imagine" or "worst pain imaginable").