Paravertebral blocks in immediate breast reconstruction following mastectomy

Intrathecal Morphine vs Paravertebral Nerve Blocks for Analgesia After Breast Reconstruction With Abdominally Based Free Flaps

BACKGROUND

Breast reconstruction with abdominally based free flaps can be associated with more significant acute pain and longer hospital stays than implant-based techniques. As new pain management strategies are developed, there have not been any studies conducted to analyze the analgesic effects of intrathecal morphine (ITM) for patients undergoing abdominally based free flap reconstruction.

OBJECTIVES

The primary outcome analyzed in this retrospective study was opioid consumption, which was measured from the postoperative anesthesia care unit (PACU) through postoperative day (POD) 2. Secondary outcomes of the study analyzed included factors such as pain scores, hospital length of stay (LOS), and adverse effects.

METHODS

Fifty-one patients presented for breast reconstruction with abdominally based free flaps and received ITM for postoperative analgesia. Results obtained were compared with a cohort that included an equal number of patients who received paravertebral nerve blocks (PVBs).

RESULTS

Results showed that patients who received ITM displayed a lower median consumption in the PACU (0 mg vs 12.5 mg MEQ; P = .009), from PACU to POD 1 (0 mg vs 7.5 mg MEQ; P = .046), and POD 1 to POD 2 (7.5 mg vs 30 mg MEQ; P = .002) when compared with those who received PVBs. Those who received ITM also had lower median pain scores in the PACU and from PACU to POD 1 and a decreased LOS. There were similar rates of adverse events.

CONCLUSIONS

ITM improves postoperative analgesia after abdominally based free flaps when compared to PVBs and may facilitate recovery and earlier discharge.

LEVEL OF EVIDENCE: 3

Music-Based Therapy for the Treatment of Perioperative Anxiety and Pain-A Randomized, Prospective Clinical Trial

Background: Music-based intervention has been advocated as a nonpharmacologic approach for the perioperative control of pain and anxiety in surgical patients. However, its impact on patients with preoperative anxiety has not been clearly established. Our study aimed to examine the impact of music-based intervention administered before, during, and after surgery on postoperative opioid consumption and pain levels, as well as preoperative anxiety, depression, and pain catastrophizing. We hypothesized that, compared to a control group, music-based intervention would be effective in reducing opioid requirements and mood disorders. Methods: This study was a single-center, prospective, single-blinded, randomized controlled trial. Inclusion criteria isame-day or observation surgery. Exclusion criteria included American Society of Anesthesiologists physical status IV, use of spinal anesthesia, PROMIS Anxiety T-scores ≤ 57.4 and ≥74.1, preoperative chronic opioid use, transgender surgery, and history of drug or alcohol abuse. Music-based intervention was developed by a certified music therapist. Each patient was randomized to receive standard of care (SC) or SC plus music-based intervention before, during, and after surgery. The primary end point was postoperative oral morphine equivalents (OMEs) over 5 days following surgery using the area under the curve (AUC)Secondary end points were PROMIS Anxiety, PROMIS Depression scores Pain Catastrophizing Scale scores, postoperative nausea and vomiting, time of hospital discharge, and patient satisfaction (0 = totally unsatisfied to 10 = completely satisfied). Results: A total of 75 patients were randomized to a music-based intervention (n = 33) or control (n = 42) group. Patients in the music-based intervention group consumed 56.7% less opioids than those in the control group (AUC was 2.8 in the music-based intervention group vs. 6.4 in the control group, absolute standardized mean difference (aSMD) = 0.34 (-0.17, 0.85)). No difference in pain scores was recorded between groups. Music-based intervention also reduced anxiety on postoperative day (POD)2 (aSMD = 0.38 (-0.16, 0.91)), depression on POD2 (aSMD = 0.31 (-0.23, 0.84)) and POD4 (aSMD = 0.24 (-0.29, 0.77)), and pain catastrophizing on POD1 (aSMD = 0.24 (-0.3, 0.77)). Conclusions: Our data support the use of music-based intervention to reduce postoperative opioid requirements. Music-based intervention may also reduce anxiety, depression, and pain catastrophizing.

Regional Blocks Benefit Patients Undergoing Bilateral Mastectomy with Immediate Implant-Based Reconstruction, Even After Discharge

BACKGROUND

There is limited evidence that regional anesthesia reduces pain in patients undergoing mastectomy with immediate implant-based reconstruction. We sought to determine whether regional blocks reduce opioid consumption and improve post-discharge patient-reported pain in this population.

METHODS

We retrospectively reviewed patients who underwent bilateral mastectomy with immediate implant-based reconstruction with and without a regional block. We tested for differences in opioid consumption by block receipt using multivariable ordinal regression, and also assessed routinely collected patient-reported outcomes (PROs) for 10 days postoperatively and tested the association between block receipt and moderate or greater pain.

RESULTS

Of 754 patients, 89% received a block. Non-block patients had an increase in the odds of requiring a higher quartile of postoperative opioids. Among block patients, the estimated probability of being in the lowest quartile of opioids required was 25%, compared with 15% for non-block patients. Odds of patient-reported moderate or greater pain after discharge was 0.54 times lower in block patients than non-block patients (p = 0.025). Block patients had a 49% risk of moderate or greater pain compared with 64% in non-block patients on postoperative day 5. There was no indication of any reason for these differences other than a causal effect of the block.

CONCLUSION

Receipt of a regional block resulted in reduced opioid use and lower risk of self-reported moderate and higher pain after discharge in bilateral mastectomy with immediate implant-based reconstruction patients. Our use of PROs suggests that the analgesic effects of blocks persist after discharge, beyond the expected duration of a 'single shot' block.

Paravertebral Blocks in Tissue Expander Breast Reconstruction: Propensity-Matched Analysis of Opioid Consumption and Patient Outcomes

BACKGROUND

The paravertebral block (PVB) is an adjunctive perioperative pain control method for patients undergoing breast reconstruction that may improve perioperative pain control and reduce narcotic use. This study determined the efficacy of preoperative PVBs for perioperative pain management in patients undergoing tissue expander breast reconstruction.

METHODS

A retrospective review was performed of patients who underwent tissue expander breast reconstruction from December of 2017 to September of 2019. Two patients with PVBs were matched using propensity scoring to one no-block patient. Perioperative analgesic use, pain severity scores on days 2 to 10 after discharge, and BREAST-Q Physical Well-Being scores before surgery and at 2 weeks, 6 weeks, and 3 months after surgery were compared between the two groups.

RESULTS

The propensity-matched cohort consisted of 471 patients (314 PVB and 157 no block). The PVB group used significantly fewer morphine milligram equivalents than the no-block group (53.7 versus 69.8; P < 0.001). Average daily postoperative pain severity scores were comparable, with a maximum difference of 0.3 points on a 0-point to 4-point scale. BREAST-Q Physical Well-Being scores were significantly higher for the PVB group than the no-block group at 6 weeks after surgery (60.6 versus 51.0; P = 0.015) but did not differ significantly at 2 weeks or 3 months after surgery.

CONCLUSIONS

PVBs may help reduce perioperative opioid requirements but did not reduce pain scores after discharge when used as part of an expander-based reconstruction perioperative pain management protocol. Continued research should examine additional or alternative regional block procedures as well as financial cost and potential long-term impact of PVBs.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

The Role of Maximal Locoregional Block in Autologous Breast Reconstruction

BACKGROUND

Enhanced Recovery After Surgery (ERAS) has become the standard of care in microsurgical breast reconstruction. The current literature provides overwhelming evidence of the benefit of ERAS pathways in improving quality of recovery, decreasing length of hospital stay, and minimizing the amount of postoperative narcotic use in these patients. However, there are limited data on the role of using maximal locoregional anesthetic blocks targeting both the abdomen and chest as an integral part of an ERAS protocol in abdominally based autologous breast reconstruction. The aim of this study is to compare the outcomes of implementing a comprehensive ERAS protocol with and without maximal locoregional nerve blocks to determine any added benefit of these blocks to the standard ERAS pathway.

METHODS

Forty consecutive patients who underwent abdominally based autologous breast reconstruction in the period between July 2017 and February 2020 were included in this retrospective institutional review board-approved study. The goal was to compare patients who received combined abdominal and thoracic wall locoregional blocks as part of their ERAS pathway (study group) with those who had only transversus abdominis plane blocks. The primary end points were total hospital length of stay, overall opioids consumption, and overall postoperative complications.

RESULTS

The use of supplemental thoracic wall block resulted in a shorter hospital length of stay in the study group of 3.2 days compared with 4.2 days for the control group (P < 0.01). Postoperative total morphine equivalent consumption was lower at 38 mg in the study group compared with 51 mg in the control group (P < 0.01). Complications occurred in 6 cases (15%) in the control group versus one minor complication in the thoracic block group. There was no difference between the 2 groups in demographics, comorbidities, and type of reconstruction.

CONCLUSION

The maximal locoregional nerve block including a complete chest wall block confers added benefits to the standard ERAS protocol in microvascular breast reconstruction.

Ambulatory latissimus dorsi flap breast reconstruction: A prospective cohort study of an enhanced recovery after surgery (ERAS) protocol

PURPOSE

Enhanced recovery after surgery (ERAS) protocols improve quality of recovery and decrease length of stay for patients undergoing both alloplastic and autologous breast reconstruction. Their use in latissimus dorsi (LD) flap reconstruction has not been well established. The purpose of this study was to compare postoperative outcomes, length of stay, and total costs in a prospectively enrolled group of patients who underwent LD flap breast reconstruction using an ERAS protocol to those of a retrospective cohort of patients who were treated with a traditional recovery after surgery (TRAS) protocol.

METHODS

In a prospective cohort study conducted from 2016 to 2019, an ERAS protocol was implemented for patients undergoing LD flap breast reconstruction. The primary outcome was 24-h discharge, and secondary outcomes were readmission rate, complications, and quality of recovery. Outcomes of patients who underwent LD flap reconstruction with the ERAS protocol were compared with those of a retrospective cohort of patients who underwent LD flap reconstruction with TRAS protocols.

RESULTS

Twenty patients enrolled in the ERAS group were compared with 58 patients in the TRAS group. Postoperatively, 100% of ERAS patients were discharged within 24 h (60% on the same day) as compared to 21% (9% on the same day) in the TRAS group (p<0.0001). Minor and major complication rates were similar (30% ERAS vs. 33% TRAS and 20% ERAS vs. 10% TRAS, respectively, p > 0.05). There was significant reduction in length of stay and total cost between the two groups (6.4 h vs. 58.5 h (p = 0.003) and $5,666.80 vs. $8890.25 (p = 0.0003), respectively).

CONCLUSIONS

Breast reconstruction with the LD flap can be performed safely and effectively in the ambulatory setting. The implementation of an ERAS protocol was successful in discharging all patients home within 24 h, and the expedited discharge was associated with an acceptable complication rate, reduced length of stay, and excellent quality of recovery. Conversion from TRAS to ERAS protocols was associated with $3,223.45 cost savings per patient.