Linares LAR. Comparison of two anesthetic techniques in bilateral spinal erector plane blocks in cardiac surgery. São Paulo: "Faculdade de Medicina, Universidade de São Paulo"; 2023. BACKGROUND: Implementing multimodal care programs during the peri, intra, and postoperative period has brought about a shift in interventions, including teaching-based techniques, less invasive procedures, and shorter hospital stays. This shift has positively impacted the health system, allowing patients to resume their daily activities promptly. Nevertheless, when it comes to cardiac surgery, there remains a need for more evidence and protocols that incorporate this approach as a supplementary measure for patients undergoing myocardial revascularization.
OBJECTIVE:This study aimed to evaluate the effectiveness of blocking the plane of the two erector spinal muscles (ESP) and compare the outcomes between administering corticosteroids with the blockade and without. METHODS: A double-blind, randomized clinical trial was conducted in a public university hospital. Forty patients were divided into two groups based on the solution used for the performance of ESP. In the first group (Group AL), 0.2% ropivacaine was administered to perform the block. In the second group (Group AL + Corticosteroid), ropivacaine 0.2% associated with dexamethasone 4mg was injected. The ESP was relaxed and guided by ultrasound before surgery, injecting a volume of 25 ml of the solution on each side at the level of the transverse process of the fifth thoracic vertebra. The patients were evaluated for postoperative pain in the acute phase using the Visual Analogue Scale (VAS) and Visual Numerical Scale (VNS) after extubation and during the first seven days after surgery, both during rest and without movement. The incidence of chronic pain at 30, 60, and 90 days after surgery was also evaluated using the Brief Pain Inventory (BPI). RESULTS: The findings of the study indicate that the two groups under examination exhibited congruent pre-operative sociodemographic, clinical, and laboratory characteristics, no significant difference was observed in acute-phase analgesia between the two groups. However, the group treated with AL + corticosteroids had a shorter extubating time (793 minutes) when compared to the other group (p-value 0.047). The use of analgesic replacement medication, predominantly opioids, did not exhibit any significant differences (p-value > 0.05) between the two groups.Furthermore, the AL group + corticosteroid demonstrated a lower incidence of nonpostoperative vomiting (20% vs. 55%; p-value 0.048). The pain scores decreased over time for both groups at rest and in motion. Upon evaluation of chronic pain, the AL group + corticosteroid exhibited better scores and an earlier recovery of pain variables, such as worst number of pain, worst failure pain, average pain, intensity of pain, and sound. The BIP scale showed a significant difference (p-value >0.005) between the two groups in the three observed moments. Additionally, it was observed that the perc...