Effect of Bilateral Transversus Thoracis Muscle Plane Block in Patients Undergoing Coronary Artery Bypass Graft Surgery.

Effect of Bilateral Transversus Thoracis Muscle Plane Block on Postoperative Morphine Consumption in Patients Undergoing Elective On-pump Coronary Artery Bypass Graft Surgery: a Retrospective Study.

Coronary artery bypass graft surgery is the standard surgical treatment for coronary disease. However, there is no consensus on analgesic management in patients undergoing CABG.

The aim of the study is to evualuate efficacy of bilateral transversus thoracis muscle plane (TTMP) block combined with systemic analgesia, compared to systemic analgesia only, in patients undergoing elective on-pump CABG surgery.

Our main hypothesis is that a bilateral TTMP block performed after CABG surgery could reduce morphine consumption during the first 48 hours.

The investigators conducted an age, gender and type of surgery-matched retrospective cohort study in the Montpellier University Hospital (France).

Inclusion criteria:

• To be over 18
• To be scheduled for CABG surgery in the center of the study during the study period.

Exclusion criteria:

• Chronic pain or opioid use before surgery
• Recent thoracic regional analgesia (< 1 month)
• Preoperative dementia or other neurologic or psychiatric disease incompatible with VAS pain scoring.
• Other technique of regional anesthesia (e.g. thoracic epidural)
• Opposition to data collection

Secondary exlusion criteria:

• Postoperative prolonged sedation in ICU (> 12 hours)
• Postoperative surgical complication requiring surgical revision during the first two days.
• Opposition to data collection expressed secondarily