A systematic review of the effect of regional anesthesia on diagnosis and management of acute compartment syndrome in long bone fractures

Carbon footprint in trauma surgery, is there a way to reduce it?

BACKGROUND

Inhaled anaesthetic agents like sevoflurane contribute for approximately 5% to healthcare's carbon footprint. Previous studies suggested that the use of these agents should be minimized. Although multiple trauma surgeries can be performed under regional anaesthesia, most are performed under general anaesthesia. This study aims to evaluate the environmental benefits of using regional anaesthesia over general anaesthesia and to compare the associated complication rates.

METHODS

This retrospective study included all trauma patients (≥ 18 years) who underwent surgical intervention for hand, wrist, hip, or ankle fractures from 2017 to 2021. The hypothetical environmental gain was calculated based on the assumption that all surgeries were performed under regional anaesthesia. Complication rates were compared between regional and general anaesthesia.

RESULTS

Of the 2,714 surgeries, 15% were hand, 26% wrist, 36% hip, and 23% ankle fractures. General anaesthesia was used in 95%, regional in 5%. Switching this 95% to regional anaesthesia would reduce the sevoflurane use by 92 k, comparable to driving 406,553 km by car. The complication rate was higher with general anaesthesia compared to regional (7.7% vs 6.9%, p = 0.75).

CONCLUSION

The potential gain of the reduction of sevoflurane in trauma surgeries which can be performed under regional anaesthesia can be significant.

Regional Anesthesia for Athletes Undergoing Upper Extremity Procedures: Techniques and Considerations

Upper extremity injuries are frequent in athletes which may require surgeries. Regional anesthesia for postoperative analgesia is important to aid recovery, and peripheral nerve blocks for surgical anesthesia enable surgeries to be performed without general anesthetics and their associated adverse effects. The relevant nerve block approaches to anesthetize the brachial plexus for elbow, wrist and hand surgeries are discussed in this article. There is very limited margin for error when performing nerve blocks and multimodal monitoring approach to reduce harm are outlined. Lastly, the importance of obtaining informed consent prior to nerve block procedures should not be overlooked.

Regional anesthesia improves inpatient but not outpatient opioid demand in tibial shaft fracture surgery

BACKGROUND

Patients undergoing operative treatment of tibial shaft fractures have considerable pain largely managed with opioids. Regional anesthesia (RA) has been increasingly used to reduce perioperative opioid use.

METHODS

This was a retrospective study of 426 patients that underwent operative treatment of tibial shaft fractures with and without RA. Inpatient opioid consumption and 90-day outpatient opioid demand were measured.

RESULTS

RA significantly decreased inpatient opioid consumption for 48 h post-operatively (p = 0.008). Neither inpatient use after 48 h nor outpatient opioid demand differed in patients with RA (p > 0.05).

CONCLUSIONS

RA may help with inpatient pain control and reduce opioid use in tibial shaft fracture.

LEVEL OF EVIDENCE

Level III, retrospective, therapeutic cohort study.

Regional anesthesia provides limited decreases in opioid use following distal tibia and ankle fracture surgery

PURPOSE

Regional anesthesia (RA) is used for pain control, but its impacts on the orthopedic trauma population are not well known. This study evaluated the impact of peripheral nerve blocks after distal tibia and ankle fracture repair on opioid use and pain scores and quantified the magnitude and duration of any changes.

METHODS

This retrospective cohort study included patients treated operatively for distal tibia and ankle fractures over a 5-year period, both with and without peripheral nerve blocks. Total inpatient 5 mg oxycodone equivalents (OEs) used in the post-operative period, from 0-24, 24-48, to 48-72 h and maximum visual analog scale (VAS) pain ratings from 0-24, 24-48, to 48-72 h were recorded.

RESULTS

540 non-polytrauma patients and 183 polytrauma patients were included. Patients in the non-polytrauma group who received nerve blocks required fewer opioids on post-operative day (POD) 1 compared to the non-nerve block group (4.8 [95% CI 4.2-5.4] vs. 10.5 [95% CI: 9.2-11.8]; p < 0.001) and had lower VAS scores on POD1 (5.0 [95% CI 4.6-5.4] vs. 7.7 [95% CI: 7.3-8.1]; p < 0.001). However, there were no differences between these groups on POD2 or POD3 and no differences at any timepoints in the polytrauma group.

CONCLUSION

Patients with isolated distal tibia and ankle fractures who receive peripheral nerve blocks demonstrate modest reductions in inpatient opioids and pain scores on POD1. However, there are no clear benefits beyond this point. Furthermore, polytrauma patients do not experience any reductions in opioid consumption or pain scores.

Pain Control with Regional Anesthesia in Patients at Risk of Acute Compartment Syndrome: Review of the Literature and Editorial View

Acute compartment syndrome (ACS) is a devastating complication that can happen in almost every part of the human body, most noticeably after long bone fractures. The cardinal symptom of ACS is pain in excess of what would otherwise be expected from the underlying injury and unresponsive to routine analgesia treatment. There is paucity of literature on major analgesic management strategies including opioid analgesia, epidural anesthesia, and peripheral nerve blocks with regard to their differential efficacy and safety of pain management in patients at risk of developing ACS. The lack of quality data has led to recommendations that are perhaps more conservative than they should be, particularly when it comes to peripheral nerve blocks. In this review article, we attempt to make recommendations in favor of regional anesthesia in this vulnerable group of patients and strategies that will optimize adequate pain control and improve surgical outcome without jeopardizing patient safety.

Ultrasound-Guided Nerve Blocks: Suggested Procedural Guidelines for Emergency Physicians

Acute pain is one of the most frequent, and yet one of the most challenging, complaints physicians encounter in the emergency department (ED). Currently, opioids are one of several pain medications given for acute pain, but given the long-term side effects and potential for abuse, alternative pain regimens are sought. Ultrasound-guided nerve blocks (UGNB) can provide quick and sufficient pain control and therefore can be considered a component of a physician's multimodal pain plan in the ED. As UGNB are more widely implemented at the point of care, guidelines are needed to assist emergency providers to acquire the skill necessary to incorporate them into their acute pain management.

Regional anesthesia does not decrease inpatient or outpatient opioid demand in distal femur fracture surgery

INTRODUCTION

Regional anesthesia (RA) is sometimes used to decrease pain and opioid consumption in distal femur fractures. However, the real-world impact of RA on inpatient opioid consumption and outpatient opioid demand is not well known. The hypothesis of this study is that RA would be associated with decreased inpatient opioid consumption and outpatient opioid demand.

METHODS

This study evaluated inpatient post-operative opioid consumption (0-24 h, 24-48 h, 48-72 h) and outpatient opioid demand (discharge to 2 weeks, 6 weeks, and 90 days) in all patients ages 18 and older undergoing operative treatment of distal femur fractures at a single institution from 7/2013 to 7/2018 (n = 230). Unadjusted and adjusted multivariable models were used to evaluate the impact of RA and other baseline patient and operative characteristics on inpatient opioid consumption and outpatient opioid demand.

RESULTS

Adjusted models demonstrated a small, significant increase in inpatient opioid consumption in patients with RA compared to no RA (4.7 estimated OE's without RA vs 6.2 OE's with RA from 24- to 48-h post-op, p < 0.05) but otherwise no significant differences at other timepoints (6.7 estimated OE's without RA vs 6.9 OE's with RA from 0- to 24-h post-op and 4.5 vs 4.4 from 48- to 72-h post-op, p > 0.05). Estimated cumulative outpatient opioid demand was significantly higher in patients with RA from discharge to 6 weeks and to 90 days (55.8 OE's without RA vs 63.9 with RA from discharge to 2 weeks, p > 0.05; 74.9 vs 95.1 OE's to 6 weeks, and 85 vs 113.1 OE's to 90 days, p < 0.05).

DISCUSSION

In distal femur fracture surgery, RA was associated with increased inpatient and outpatient opioid demand after adjusting for baseline patient and treatment characteristics. These results call into question the routine use of RA in distal femur fractures.

LEVEL OF EVIDENCE

Level III, retrospective, therapeutic cohort study.

Extremity compartment syndrome: A review with a focus on non-invasive methods of diagnosis

The article deals with an overview of acute extremity compartment syndrome with a focus on the option of non-invasive detection of the syndrome. Acute extremity compartment syndrome (ECS) is an urgent complication that occurs most often in fractures or high-energy injuries. There is still no reliable method for detecting ECS. The only objective measurement method used in clinical practice is an invasive measurement of intramuscular pressure (IMP). The purpose of this paper is to summarize the current state of research into non-invasive measurement methods that could allow simple and reliable continuous monitoring of patients at risk of developing ECS. Clinical trials are currently underway to verify the suitability of the most studied method, near-infrared spectroscopy (NIRS), which is a method for measuring the local oxygenation of muscle compartments. Less explored methods include the use of ultrasound, ultrasound elastography, bioimpedance measurements, and quantitative tissue hardness measurements. Finding a suitable method for continuous non-invasive monitoring of the syndrome would greatly improve the quality of care for patients at risk. ECS must be diagnosed quickly and accurately to prevent irreversible tissue damage that can occur within hours of syndrome onset and may even warrant amputation if neglected.

Emergency Department Utilization After Administration of Peripheral Nerve Blocks for Upper Extremity Surgery

BACKGROUND

The purpose of this study was to determine the impact of upper extremity peripheral nerve blocks on emergency department (ED) utilization after hand and upper extremity surgery.

METHODS

We reviewed all outpatient upper extremity surgeries performed in a single Midwestern state between January 2009 and June 2019 using the Indiana Network for Patient Care. These encounters were used to develop a database of patient demographics, comorbidities, concurrent procedures, and postoperative ED visit utilization data. We performed univariate, bivariate, and multivariate logistic regression analyses.

RESULTS

Among 108 451 outpatient surgical patients, 9079 (8.4%) received blocks. Within 1 week of surgery, a greater proportion of patients who received peripheral nerve blocks (1.4%) presented to the ED than patients who did not (0.9%) (P < .001). The greatest risk was in the first 2 postoperative days (relative risk, 1.78; P < .001). Pain was the principal reason for ED utilization in the block cohort (53.6%) compared with those who did not undergo a block (35.1%) (P < .001). When controlling for comorbidities and demographics, only peripheral nerve blocks (adjusted odds ratio [OR], 1.71; P = 0.007) and preprocedural opioid use (adjusted OR, 1.43; P = .020) conferred an independently increased risk of ED utilization within the first 2 postoperative days.

CONCLUSIONS

Peripheral nerve blocks used for upper extremity surgery are associated with a higher risk of unplanned ED utilization, most likely related to rebound pain. Through proper patient education and pain management, we can minimize this unnecessary resource utilization.

Regional Anesthesia Associated With Decreased Inpatient and Outpatient Opioid Demand in Tibial Plateau Fracture Surgery

BACKGROUND

Regional anesthesia (RA) has been used to reduce pain and opioid usage in elective orthopedic surgery. The hypothesis of this study was that RA would be associated with decreased opioid demand in tibial plateau fracture surgery.

METHODS

Inpatient opioid consumption and 90-day outpatient opioid prescribing in all patients ≥18 years of age undergoing tibial plateau fracture surgery from July 2013 to July 2018 (n = 264) at a single, level I trauma center were recorded. The presence or absence of perioperative RA was noted. Of 60 patients receiving RA, 52 underwent peripheral nerve blockade (PNB) with single-shot sciatic-popliteal (40.0%; n = 24), femoral (26.7%; n = 16), adductor canal (18.3%; n = 11), or fascia iliaca (1.7%; n = 1) block with ropivacaine. Ten patients received epidural analgesia (EA) with either single-shot spinal (11.7%; n = 7) blocks or continuous epidural (5.0%; n = 3). Additional baseline and treatment characteristics were recorded, including age, sex, race, body mass index (BMI), smoking, chronic opioid use, American Society of Anesthesiologists (ASA) score, injury mechanism, additional injuries, open injury, and additional inpatient surgery. Statistical models, including multivariable generalized linear models with propensity score weighting to adjust for baseline patient and treatment characteristics, were used to assess perioperative opioid demand with and without RA.

RESULTS

RA was associated with reduced inpatient opioid usage from 0 to 24 hours postoperatively of approximately 5.2 oxycodone 5-mg equivalents (0.74 incident rate ratio [IRR]; 0.63-0.86 CI; P < .001) and from 24 to 48 hours postoperatively of approximately 2.9 oxycodone 5-mg equivalents (0.78 IRR; 0.64-0.95 CI; P = .014) but not at 48 to 72 hours postoperatively. From 1 month preoperatively to 2 weeks postoperatively, RA was associated with reduced outpatient opioid prescribing of approximately 24.0 oxycodone 5-mg equivalents (0.87; 0.75-0.99; P = .044) and from 1 month preoperatively to 90 days postoperatively of approximately 44.0 oxycodone 5-mg equivalents (0.83; 0.71-0.96; P = .011), although there was no significant difference from 1 month preoperatively to 6 weeks postoperatively. There were no cases of acute compartment syndrome in this cohort.

CONCLUSIONS

In tibial plateau fracture surgery, RA was associated with reduced inpatient opioid consumption up to 48 hours postoperatively and reduced outpatient opioid demand up to 90 days postoperatively without an associated risk of acute compartment syndrome. RA should be considered for patients undergoing tibial plateau fracture fixation.

Regional Anesthesia for Athletes Undergoing Upper Extremity Procedures: Techniques and Considerations

Upper extremity injuries are frequent in athletes which may require surgeries. Regional anesthesia for postoperative analgesia is important to aid recovery, and peripheral nerve blocks for surgical anesthesia enable surgeries to be performed without general anesthetics and their associated adverse effects. The relevant nerve block approaches to anesthetize the brachial plexus for elbow, wrist and hand surgeries are discussed in this article. There is very limited margin for error when performing nerve blocks and multimodal monitoring approach to reduce harm are outlined. Lastly, the importance of obtaining informed consent prior to nerve block procedures should not be overlooked.

Complications Associated with Peripheral Nerve Blocks

Outpatient orthopedic surgery is gradually becoming the standard across the country, as it has been found to significantly lower costs without compromising patient care. Peripheral nerve blocks (PNBs) are largely what have made this transition possible by providing patients excellent pain control in the immediate postoperative period. However, with the increasing use of PNBs, it is important to recognize that they are not without complications. Although rare, these complications can cause patients a significant amount of morbidity. It is important for surgeons to know the risks of peripheral nerve blocks and to inform their patients.