BACKGROUND: Methadone is a potent opioid exerting an analgesic effect through N-methyl-d-aspartate receptor antagonism and the inhibition of serotonin and noradrenaline reuptake. It has also been used in several procedures to reduce postoperative pain and opioid use. This meta-analysis aimed to determine whether the intraoperative use of methadone lowers postoperative pain scores and opioid consumption in comparison to other opioids. METHODS: Double-blinded, controlled trials without language restrictions were included from MEDLINE, Embase, LILACS, The Cochrane Central Register of Controlled Trials (CENTRAL), and CINAHL via EBSCOhost. The included studies tracked total opioid consumption, postoperative pain scores, opioid-related side effects, and patient satisfaction until 72 hours postoperatively. Mean difference (MD) was used for effect size. RESULTS: In total, 476 articles were identified and 13 were considered eligible for inclusion in the meta-analysis. In 486 patients (7 trials), pain at rest (MD, 1.09; 95% confidence interval (CI), 1.47–0.72; P < .00001) and at movement (MD, 2.48; 95% CI, 3.04–1.92; P = .00001) favored methadone 24 hours after surgery. In 374 patients (6 trials), pain at rest (MD, 1.47; 95% CI, 3.04–1.02; P < .00001) and at movement (MD, 2.03; 95% CI, 3.04–1.02; P < .00001) favored methadone 48 hours after surgery. In 320 patients (4 trials), pain at rest (MD, 1.02; 95% CI, 1.65–0.39; P = .001) and at movement (MD, 1.34; 95% CI, 1.82–0.87; P < .00001) favored methadone 72 hours after surgery. A Trial Sequential Analysis was performed and the Z-cumulative curve for methadone crossed the monitoring boundary at all evaluations, additionally crossing Required Information Size at 24 and 48 hours at rest. Methadone group also showed lower postoperative opioid consumption in morphine equivalent dosage (mg) at 24 hours (MD, 8.42; 95% CI, 12.99–3.84 lower; P < .00001), 24–48 hours (MD, 14.33; 95% CI, 26.96–1.91 lower; P < .00001), 48–72 hours (MD, 3.59; 95% CI, 6.18–1.0 lower; P = .007) postoperatively. CONCLUSIONS: Intraoperative use of methadone reduced postoperative pain scores compared to other opioids, and Trial Sequential Analysis suggested that no more trials are required to confirm pain reduction at rest until 48 hours after surgery. Methadone also reduced postoperative opioid consumption and led to better patient satisfaction scores through 72 hours postoperatively compared to other opioids.

ObjectivesSurgical patients still commonly experience postoperative pain. With the increasing prevalence of obesity, there is a growing demand for surgical procedures by this population. Intraoperative use of methadone has not been well assessed in this population.Materials and methodsPatients with a body mass index of 35 kg/m2 or more undergoing bariatric surgery were randomly assigned to receive either fentanyl (group F) or methadone (group M) in anesthesia induction and maintenance. The primary outcome was morphine consumption during the first 24 hours after surgery through a patient-controlled analgesia device. Secondary outcomes were pain scores at rest and while coughing, opioid related side effects, and patient satisfaction. The patients were also evaluated 3 months after surgery for the presence of pain, dysesthesia, or paresthesia at surgical site.ResultsPostoperative morphine consumption was significantly higher for patients receiving fentanyl than methadone during the postoperative period at 2 hours (mean difference [MD] 6.4 mg; 95% CI 3.1–9.6; P<0.001), 2–6 hours (MD 11.4 mg; 95% CI 6.5–16.2; P<0.001), 6–24 hours (MD 10.4 mg; 95% CI 5.0–15.7; P<0.001), and 24–48 hours (MD 14.5 mg; 95% CI 3.9–25.1; P=0.01). Patients from group F had higher pain scores until 24 hours postoperatively, higher incidence of nausea and vomiting, lower satisfaction, and more evoked pain at surgical scar at the 3-month postoperative evaluation than group M.ConclusionIntraoperative methadone can safely lower postoperative opioid consumption and improve postoperative pain scores compared with fentanyl in morbidly obese patients.

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Coronavirus SARS-CoV-2 is responsible for the COVID-19 pandemic, and headache is reported in 6.5% to 34% of all cases. There is little published evidence on the pharmacological treatment of COVID-19 headache. This case series presents six COVID-19 infected patients with refractory headache, in which intranasal bedside Sphenopalatine Ganglion Block was performed for analgesia. All patients had a reduction in headache intensity from severe pain to mild or no pain after the procedure with minor transient side effects. Proposed mechanisms of action include reduction of local autonomic stimuli, intracranial vasoconstriction, and reduction of vasoactive substances release in the pterygopalatine fossa.

BACKGROUND AND OBJECTIVES:The anesthetic management has evolved with the use of alternative techniques that promote greater safety, quick recovery and comfort in the perioperative period. The erector spinae plane block emerges as a promising alternative that can be employed as a simple analgesic technique for thoracic analgesia, acute post-surgical, post-traumatic and chronic neuropathic thoracic pain. CASE REPORT: Female patient, 72-year-old, undergoing aortic valve replacement surgery under general anesthesia associated with an erector spinae plane block as a technique for perioperative pain management. CONCLUSION: We demonstrate with this case report that the erector spinae plane block can be a suitable option as a regional analgesia technique for cardiac surgery, used perioperatively as a regional block for multimodal analgesia. Further research and studies are needed to address its efficacy and safety for multiple cardiac and aortic surgery techniques. Keywords: Erector spinae plane block, Fast-track, Enhanced recovery after surgery. RESUMO JUSTIFICATIVA E OBJETIVOS:O manuseio anestésico evoluiu com o uso de técnicas alternativas que promovem maior segurança, rápida recuperação e conforto no período perioperatório. O bloqueio do plano eretor espinhal surge como uma alternativa promissora que pode ser empregada como uma técnica analgésica simples para analgesia torácica, dor torácica aguda pós-cirúrgica, pós-traumática e crônica neuropática. RELATO DO CASO: Paciente do sexo feminino, 72 anos, submetida à cirurgia de troca valvar aórtica sob anestesia geral asso-© Sociedade Brasileira para o Estudo da Dor ciada ao bloqueio do plano eretor espinhal, como técnica para o manuseio da dor no período perioperatório. CONCLUSÃO: O presente relato demonstrou que o bloqueio do plano eretor espinhal pode ser uma opção adequada como uma técnica de analgesia regional para cirurgia cardíaca, usada no perioperatório como um bloqueio regional para analgesia multimodal. Mais pesquisas e estudos são necessários para abordar sua eficácia e segurança para múltiplas técnicas de cirurgia cardíaca e aórtica. Descritores: Bloqueio do plano eretor espinhal, Fast-track, Recuperação aprimorada após a cirurgia.Erector spinae plane block for perioperative analgesia in cardiac surgery. Case report Br J Pain. São Paulo, 2018 oct-dec;1(4):369-71

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