Nerves in quadratus lumborum planes: A cadaveric study.

Dermatomal analgesia achieved with quadratus lumborum blocks is site-dependent and inconsistent. Cadaveric and clinical studies reveal multiple mechanisms of action. We dissected six fresh human cadavers bilaterally and thoroughly studied their neurological linkages to the quadratus lumborum muscle (QLM) to identify neural structures and block targets. At the end of the investigation, only the subcostal nerve (anterolateral) and the ilioinguinal nerves were found near the QLM in all specimens. The iliohypogastric nerve was found in only two specimens. No further neural targets were found in the fascial planes before and posterior to the QLM.

Influence of surgical scrubs outside the operation theatre on post-operative infections - A systematic review.

Background and Aims: Healthcare workers (HCWs), which include surgeons, anaesthesiologists, nurses, technicians, and other non-medical staff working in the operation theatre (OT), change to surgical scrubs for providing designated services. This study was intended to investigate the association of moving in and out of OT to other hospital areas without changing scrubs and its impact on bacterial infection. Methods: After PROSPERO registration, we performed a systematic review to compare the occurrence of surgical site infections (SSIs) with or without the movement of HCWs outside OT. We searched PubMed, Scopus, and Cochrane Library using relevant keywords. RoB-2 and ROBINS-E tools were used to assess the risk of bias in randomised controlled trials (RCTs) and observational studies, respectively. Results: We identified six articles that fulfilled the inclusion criteria: three RCTs and three observational studies. A risk of bias assessment revealed an overall low bias in the RCTs and an overall high bias in the observational studies. The analysis revealed a comparable incidence of bacterial infection in terms of colony-forming units when scrubs when HCWs moved in and out of OT with the same scrubs. A meta-analysis was not performed due to heterogeneity in participants and the OT set-up, as well as fewer studies and sample size. Conclusion: The evidence is insufficient to suggest that wearing scrubs outside the OT could increase the incidence of SSI in surgical patients or transmit the organisms to patients, causing infection. The present review neither supports nor is against wearing surgical scrubs outside OT premises.

Comparative study lumbar plexus block and lumbar erector spinae plane block for postoperative pain relief after proximal femoral nail for proximal femoral fractures.

Background: The clinical outcomes (time to ambulation, length of stay, and home discharge) after proximal femoral nail (PFN) for proximal femoral fractures (PFF) is dependent on successful pain management. Currently, the lumbar erector spinae plane block (LESPB) is in vogue and is associated with favorable outcomes in the postoperative period. Our study aimed to evaluate whether a LESPB provided equivalent analgesia and clinical outcomes as compared to LPB in PFN for PFF. Material and Methods: We compared LPBs [L] with LESPBs [E], with 30 patients in each group, performed from June 2020 to June 2021 for PFN in PFF's. The primary outcome of this study was the average NRS pain scores over 24 hours postoperatively. Secondary outcomes included pain scores at different time points over 24 hours, opioid consumption between the groups at 24 hours postoperatively, time for request of first parenteral analgesia, quadriceps weakness and adverse events. Results: The average pain scores over 24 hours were better in the LESPB group as compared to the LPB group (p = 0.02). Further, only n = 5 (30%) of patients in the LESPB group required opioids, while n = 13 (43.333%) of patients in the LPB group required opioids. Moreover, the median time for request of first parenteral analgesia was 615 (480-975) minutes, weakness of quadriceps function occurred in 2 patients in the L group, which recovered at 3rd and 5th month, respectively, with no incidences of hemodynamic instability and respiratory complications. Conclusions: This trial demonstrated that single bolus LESPB is superior to LPB in terms of analgesic outcomes, has low adverse events, and is an agreeable substitute for patients with PFF undergoing a PFN.

Peri-humeral block for postoperative analgesia in patients with distal humerus surgery: A case series.

The brachial plexus blocks (BPBs) are routinely performed for all surgeries in the vicinity of the elbow joint. Phrenic nerve paresis is a major problem with above-clavicle blocks especially the interscalene approach. The primary aim of this pilot study was to assess feasibility and to evaluate if perioperative pain management with the articular and cutaneous nerve block, the peri-humeral block (PHB) resulted in decreased use of opioid consumption in the intraoperative and postoperative period for the first 24 hours. Twenty-four patients with distal humerus fracture received ultrasound (US)-guided PHB as part of their perioperative anesthetic management. The primary aim was to evaluate block efficacy in terms of time to first analgesia and opioid consumption in first 24 hours. US in real time revealed that in all patients the local anesthetic was optimally deposited. Due to a stable intraoperative hemodynamics, none of the patients required additional opioid doses. The median pain scores over 24 hours were 2.4 with IQR (0-3.8). The mean time to first analgesic was 425.417 ± 229.005 min. There were no adverse effects reported at the time of hospital discharge. Though the US-guided PHB would not replace the BPB, in some special circumstances, it would be desirable to implement the former block which has opioid and motor sparing features and incorporate with multimodal analgesia.

Comments on "Post severe COVID-19 infection lung damages study. The experience of early three months multidisciplinary follow-up" by De Michele et al.

Dear Editor, we read the original study by De Michele et al. titled "Post severe COVID-19 infection lung damages study. The experience of early three months multidisciplinary follow-up" with great interest...

Pectoral-intercostal fascial plane block in chronic post-sternotomy pain.

Persistent poststernotomy pain (PSP) is a well-known entity following cardiac surgery done with midline strenotomy. The severity of pain is usually mild to moderate in the majority of the patients. However, a small percentage of patients develop severe and persistent pain and need aggressive treatment. Our patient, a 63-year-old lady developed chronic severe parasternal pain following coronary artery bypass graft surgery. As multiple medications did not relieve her pain effectively, we did an ultrasound-guided pectoral-intercostal fascial plane block to which she responded with excellent and long-lasting pain relief. This is the first such case report of the use of this novel block technique for treating PSP.

Perioperative melatonin in COVID-19 patients: benefits beyond sedation and analgesia.

Cytokine storm in coronavirus disease 2019 (COVID-19) patients leads to acute lung injury, acute respiratory distress syndrome, multiorgan dysfunction, shock, and thrombosis thus contributing to significant morbidity and mortality. Several agents like steroids, ascorbic acid, vitamins (C, D, E), glutathione, N-acetylcysteine have been used and several studies are underway to identify its efficacy in addressing undesirable effects due to COVID-19 illness. Among several experimental modalities based on expert opinion and anecdotal data, melatonin is one molecule that appears promising. Owing to its anti-inflammatory, anti-oxidant, and immunomodulatory properties, melatonin can be an important agent used as a component of multimodal analgesia in COVID-19 patients, suspected patients, and patients with exposure to positive patients undergoing emergency or urgent surgeries. Further research is required to know the optimal time of initiation, dose, and duration of melatonin as an adjunct.

Regional anesthesia prevents cancer recurrence after oncosurgery! What is wrong with the hypothesis?

Several studies have investigated the hypothesis of the efficacy of regional anesthesia (RA) techniques in preventing cancer recurrence when used perioperatively during oncological surgeries. Although theoretically, the association appears beneficial, the patient outcomes after cancer surgeries with or without RA were comparable, that is, the use of RA did not improve patient survival or prevent cancer recurrence after surgery. Another problem with this data is its retrospective nature which makes its interpretation difficult. Moreover, there are a lot of other confounding factors like comorbidities, tumor biology, nosocomial infections, duration of hospital stay, and baseline immunity, which is not comparable, and hence make standardization for a well-designed prospective study difficult. Return to intended oncologic therapy (RIOT) involves treatment in the form of radiation or chemotherapy which, if received on time after the planned oncosurgery, could provide a better chance of preventing cancer recurrence and improved survival. However, none of the retrospective studies have correlated cancer recurrence with delay in RIOT or not receiving RIOT as a cause of cancer recurrence. This paper discusses why even a well-designed, prospective trial could possibly never establish the efficacy of RA in preventing cancer recurrence and improving survival due to the complexities involved in a patient undergoing oncosurgery.

Efficacy of xenon anesthesia in preventing postoperative cognitive dysfunction after cardiac and major non-cardiac surgeries in elderly patients: a topical review.

Elderly patients undergoing major cardiac and non-cardiac surgeries have a high propensity (up to 40-60%) of developing postoperative cognitive dysfunction, which are caused by patient's factors, type of surgery, intraoperative and postoperative factors. All these pose a challenge to the clinicians. The noble gas xenon does not undergo metabolism or any kind of biotransformation in the body owing to its inert nature. Xenon confers excellent hemodynamic stability and provides excellent recovery at the end of surgery. This topical review discusses advantages of xenon anesthesia in elderly patients undergoing major cardiac and non-cardiac surgeries and whether it is worth using a costly anesthetic in elderly patients for preventing postoperative cognitive dysfunction.