Regional anaesthesia for thoracic surgery: what is the PROSPECT that fascial plane blocks are the answer?

Perioperative Pain Management for Thoracic Surgery: A Multi-Layered Approach

Cardiothoracic surgeries frequently pose unique challenges in the management of perioperative acute pain that require a multifaceted and personalized approach in order to optimize patient outcomes. This article discusses various analgesic strategies including regional anesthesia techniques such as thoracic epidurals, erector spinae plane blocks, and serratus anterior plane blocks and underscores the significance of perioperative multimodal medications, while providing nuanced recommendations for their use. This article further attempts to provide evidence for the efficacy of the different modalities and compares the effectiveness of the choice of analgesia. The roles of Acute Pain Services (APS) and Transitional Pain Services (TPS) in mitigating opioid dependence and chronic postsurgical pain are also discussed. Precision medicine is also presented as a potential way to offer a patient tailored analgesic strategy. Supported by various randomized controlled trials and meta-analyses, the article concludes that an integrated, patient-specific approach encompassing regional anesthesia and multimodal medications, while also utilizing the services of the Acute Pain Service can help to enhance pain management outcomes in cardiothoracic surgery.

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PURPOSE OF REVIEW

Thoracic surgery is evolving, necessitating an adaptation for perioperative anesthesia and analgesia. This review highlights the recent advancements in perioperative (multimodal) analgesia for minimally invasive thoracic surgery.

RECENT FINDINGS

Continuous advancements in surgical techniques have led to a reduction in surgical trauma. However, managing perioperative pain remains a major challenge, impeding postoperative recovery. The traditional neuraxial technique is now deemed outdated for minimally invasive thoracic surgery. Instead, newer regional techniques have emerged, and traditional approaches have undergone (re-)evaluation by experts and professional societies to establish guidelines and practices. Assessing the quality of recovery, evenafter discharge, has become a crucial factor in evaluating the effectiveness of these strategies, aiding clinicians in making informed decisions to improve perioperative care.

SUMMARY

In the realm of minimally invasive thoracic surgery, perioperative analgesia is typically administered through systemic and regional techniques. Nevertheless, collaboration between anesthesiologists and surgeons, utilizing surgically placed nerve blocks and an active chest drain management, has the potential to significantly improve overall patient care.

Postoperative recovery with continuous erector spinae plane block or video-assisted paravertebral block after minimally invasive thoracic surgery: a prospective, randomised controlled trial

BACKGROUND

PROcedure SPECific Postoperative Pain ManagemenT (PROSPECT) guidelines recommend erector spinae plane (ESP) block or paravertebral block (PVB) for postoperative analgesia after video-assisted thoracoscopic surgery (VATS). However, there are few trials comparing the effectiveness of these techniques on patient-centric outcomes, and none evaluating chronic postsurgical pain (CPSP). Furthermore, there are no available trials comparing ultrasound-guided ESP with surgically placed PVB in this patient cohort.

METHODS

We conducted a two-centre, prospective, randomised, double-blind, controlled trial, comparing anaesthesiologist-administered, ultrasound-guided ESP catheter with surgeon-administered, video-assisted PVB catheter analgesia among 80 adult patients undergoing VATS. Participants received a 20 ml bolus of levobupivacaine 0.375% followed by infusion of levobupivacaine 0.15% (10-15 ml h^-1) for 48 h. Primary outcome was Quality of Recovery-15 score (QoR-15) at 24 h. Secondary outcomes included QoR-15 at 48 h, peak inspiratory flow (ml s^-1) at 24 h and 48 h, area under the pain verbal response score vs time curve (AUC), opioid consumption, Comprehensive Complication Index, length of stay, and CPSP at 3 months after surgery.

RESULTS

Median (25-75%) QoR-15 at 24 h was higher in ESP (n=37) compared with PVB (n=37): 118 (106-134) vs 110 (89-121) (P=0.03) and at 48 h: 131 (121-139) vs 120 (111-133) (P=0.03). There were no differences in peak inspiratory flow, AUC, Comprehensive Complication Index, length of hospital stay, and opioid consumption. Incidence of CPSP at 3 months was 12 (34%) for ESP and 11 (31%) for PVB (P=0.7).

CONCLUSIONS

Compared with video-assisted, surgeon-placed paravertebral catheter, erector spinae catheter improved overall QoR-15 scores at 24 h and 48 h but without differences in pain or opioid consumption after minimally invasive thoracic surgery.

CLINICAL TRIAL REGISTRATION

NCT04729712.

Pain Management After Open Liver Resection: Epidural Analgesia Versus Ultrasound-Guided Erector Spinae Plane Block

Background: Multimodal analgesia techniques, including regional analgesia, have been shown to provide effective analgesia and minimize opioid consumption after liver resection surgery. While thoracic epidural analgesia (TEA) is considered the gold standard, its role in the current era of enhanced recovery after surgery (ERAS) has been questioned. Erector spinae plane blocks (ESPBs) have the potential to provide effective postoperative analgesia without the risks associated with epidural analgesia. The primary aim of this quality improvement project was to evaluate the analgesic efficacy of ultrasound-guided ESPB in comparison with TEA in patients undergoing open liver resection.

Methods: Fifty patients who underwent open liver resection and received TEA (n=25) or ESPB (n=25) as part of an ERAS pathway were retrospectively identified. The primary outcome measure was cumulative postoperative opioid consumption at 24 hours. Secondary outcomes included opioid consumption, pain scores, the incidence of nausea and vomiting requiring antiemetics, lower extremity muscle weakness, and occurrence of hypotension requiring treatment on arrival to the post-anesthesia care unit and at 2, 6, 12, 24 hours, and daily through postoperative day 7. 

Results: Opioid requirements were significantly lower in the TEA group compared to the ESPB group. Postoperative pain scores at rest and with deep inspiration were significantly lower in the TEA group through postoperative day 5. There were no differences in other outcome measures.

Conclusions: These findings suggest that compared with ESPB, TEA provides superior pain relief after open liver resection.