Regional analgesia for cardiac surgery

Multimodal analgesia with parasternal plane block protocol within an enhanced recovery after cardiac surgery program decreases opioid use

Objective

This study investigated the efficacy of a multimodal analgesia (MMA) with an opioid-sparing strategy, incorporating a parasternal plane block (PPB) within a systematic standardized Enhanced Recovery After Surgery (ERAS) program for patients undergoing elective cardiac surgery.

Methods

From 2015 to 2021, 3153 patients underwent elective coronary artery bypass grafting and/or valve procedures. Patients were dichotomized by the presence or absence of an ERAS program including a perioperative MMA with an opioid-sparing approach and PPB protocols. Propensity score matching yielded 1026 well-matched pairs. The primary outcomes were the opioid-free rate and the opioid consumption in morphine milligram equivalents (MME) in the intensive care unit (ICU). The secondary outcomes were postoperative visual analog scale (VAS) scores, mechanical ventilation duration, ileus, delirium, bronchopneumonia, and length of ICU stay.

Results

The ICU opioid-free rate was significantly increased in the ERAS group (94.0%) compared with the control group (19.9%; P < .001). The ERAS group had significantly lower opioid consumption in the ICU compared with the control group (median; 11.0 MME vs 31.0 MME; P < .001; respectively). The VAS scores were analogous between the control and ERAS groups during the ICU stay. In the ERAS group, mechanical ventilation duration, ileus, delirium, bronchopneumonia rates, as well as length of ICU stay, were significantly reduced (both P < .05).

Conclusions

Within a systematic, standardized ERAS program, MMA with an opioid-sparing strategy and PPB enables opioid-free analgesia in the majority of patients, significantly decreases opioid consumption, and ensures effective postoperative pain management, thereby improving outcomes.

Maximizing Minimally Invasive Cardiac Surgery With Enhanced Recovery (ERAS)

We convened a group of cardiac surgeons, intensivists, and anesthesiologists with extensive experience in minimally invasive cardiac surgery (MICS) and perioperative care to identify the essential elements of a MICS program and the relationship with Enhanced Recovery After Surgery (ERAS). The MICS incision should minimize tissue invasion without compromising surgical goals. MICS also requires safe management of hemodynamics and preservation of cardiac function, which we have termed myocardial management. Finally, comprehensive perioperative care through an ERAS program should be provided to allow patients to achieve optimal recovery. Therefore, we propose that MICS requires 3 elements: (1) a less invasive surgical incision (non-full sternotomy), (2) optimized myocardial management, and (3) ERAS. We contend that the full benefit of MICS can be achieved only by also utilizing an ERAS platform.

Transversus Thoracis Muscle Plane Block in Paediatric Patients Who Underwent Minimally Invasive Closure of Transthoracic Ventricular Septal Defect: A Retrospective Study

Objective

Minimally invasive closure of transthoracic ventricular septal defect (VSD) has been widely used in paediatric patients. This retrospective study aimed to explore the use of transversus thoracis muscle plane block (TTMPB) in the minimally invasive closure of transthoracic VSD in paediatric patients.

Methods

From September 28, 2017, to July 25, 2022, a total of 119 paediatric patients scheduled for minimally invasive transthoracic VSD closure were considered for inclusion.

Results

In total, 110 patients were included in the final analysis. Perioperative fentanyl consumption of the TTMPB group was not different from that of the non-TTMPB group (5.90 ± 1.32 μg/kg vs. 6.25 ± 1.74 μg/kg, p = 0.473). Both the time to extubation and postanesthesia care unit (PACU) stay were significantly shorter in the TTMPB group than in the non-TTMPB group (10.94 ± 10.31 min vs. 35.03 ± 23.52 min for extubation, and 42.55 ± 16.83 min vs. 59.98 ± 27.94 min for PACU stay, both p < 0.001). Furthermore, the postoperative paediatric intensive care unit (PICU) stay in the TTMPB group was significantly shorter than in the non-TTMPB group (1.04 ± 0.28 d vs. 1.34 ± 1.05 d, p = 0.005). Multivariate analysis demonstrated that TTMPB was significantly associated with shorter time to extubation (p < 0.001) and PACU stay (p = 0.001) but not postoperative PICU stay (p = 0.094). Discussion. This study showed that TTMPB was a beneficial and safe regional anaesthesia technique for paediatric patients who underwent minimally invasive closure of transthoracic VSD, although prospective randomized controlled trials are needed to confirm the results.

Nociception Level Index-Directed Erector Spinae Plane Block in Open Heart Surgery: A Randomized Controlled Clinical Trial

Background and Objectives: The erector spinae plane block (ESPB) is a multimodal opioid-sparing component, providing chest-wall analgesia of variable extent, duration, and intensity. The objective was to examine the ESPB effect on perioperative opioid usage and postoperative rehabilitation when used within a Nociception Level (NOL) index-directed anesthetic protocol. Materials and Methods: This prospective, randomized, controlled, open-label study was performed in adult patients undergoing on-pump cardiac surgery in a single tertiary hospital. Eighty-three adult patients who met eligibility criteria were randomly allocated to group 1 (Control, n = 43) and group 2 (ESPB, n = 40) and received general anesthesia with NOL index-directed fentanyl dosing. Preoperatively, group 2 also received bilateral single-shot ultrasound-guided ESPB (1.5 mg/kg/side 0.5% ropivacaine mixed with dexamethasone 8 mg/20 mL). Postoperatively, both groups received intravenous paracetamol (1 g every 6 h). Morphine (0.03 mg/kg) was administered for numeric rating scale (NRS) scores ≥4. Results: The median (IQR, 25th−75th percentiles) intraoperative fentanyl and 48 h morphine dose in group 2-to-group 1 were 1.2 (1.1−1.5) vs. 4.5 (3.8−5.5) µg·kg−1·h−1 (p < 0.001) and 22.1 (0−40.4) vs. 60.6 (40−95.7) µg/kg (p < 0.001). The median (IQR) time to extubation in group 2-to-group 1 was 90 (60−105) vs. 360 (285−510) min (p < 0.001). Two hours after ICU admission, 87.5% of ESPB patients were extubated compared to 0% of controls (p < 0.001), and 87.5% were weaned off norepinephrine compared to 46.5% of controls (p < 0.001). The median NRS scores at 0, 6, 12, 24, and 48 h after extubation were significantly decreased in group 2. There was no difference in opioid-related adverse events and length of stay. Conclusions: NOL index-directed ESPB reduced intraoperative fentanyl by 73.3% and 48 h morphine by 63.5%. It also hastened the extubation and liberation from vasopressor support and improved postoperative analgesia.