Effectivity of Bilateral Transversus Thoracis Muscle Plane Block After Open Heart Surgery

This is a double blind randomized controlled trial. Thirty-two subject will be recruited with non-probability consecutive sampling method. Subjects who meet all inclusion criteria and do not have exclusion criteria will be asked to sign the informed consent form before included in this study. Subjects will be randomized into two groups. The first group is the treatment group who will get Bilateral Transversus Thoracis Muscle Plane Block after induction of anesthesia and the second group will be the control group who will not get any regional block during surgery. After surgery, time to first morphine dose, total morphine consumption in 24 hours, extubation time, and adverse events will be recorded for both group.