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1.
Clin Transplant ; 35(9): e14403, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34184312

RESUMO

Perioperative pain management is an important consideration in early recovery and patient satisfaction following laparoscopic donor nephrectomy. Transmuscular quadratus lumborum block has been described to reduce pain and opioid usage following several abdominal surgeries. In this prospective single-blind randomized controlled trial, we compared 52 patients who adhered to our institutional donor nephrectomy Early Recovery After Surgery pathway, which includes a laparoscopic-guided transversus abdominus plane block, to 40 patients who additionally received a transmuscular quadratus lumborum block with liposomal bupivacaine. Compared to control patients, those who received the block spent longer in the operating room prior to the surgical start (65.4 vs. 51.6 min, P < .001). Both groups had similar total hospital length of stay (33.3 h vs. 34.4 h, P = .61). Pain scores from postoperative days 0-30, number of patients requiring opioids, postoperative nausea, and pain management satisfaction were similar between both groups. Patients who received the block consumed less opioid on postoperative day 1 compared to controls (P = .006). No complications were attributable to the block. The quadratus lumborum block provides a safe pain management adjunct for some patients, and may reduce opioid use in the early postoperative period when combined with our standard institutional protocol for kidney donors.


Assuntos
Analgesia , Laparoscopia , Analgésicos Opioides/uso terapêutico , Anestésicos Locais , Bupivacaína , Humanos , Nefrectomia , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/prevenção & controle , Estudos Prospectivos , Método Simples-Cego
2.
World J Urol ; 38(12): 3113-3119, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32072229

RESUMO

PURPOSE: To assess the impact of N-methylnaltrexone, a peripherally acting mu-opioid receptor antagonist, on the post-operative recovery of patients undergoing robotic-assisted radical cystectomy for bladder cancer. METHODS: We retrospectively reviewed patients undergoing robotic-assisted radical cystectomy by a single surgeon (KC) prior to (control group) and after (treatment group) the routine use of N-methylnaltrexone. Kaplan-Meier curves and the log-rank test were used to quantify time to flatus, bowel movement, and discharge. Daily mean opioid use, daily pain assessment rating, and episodes of severe pain (7-10/10) were compared. Gastrointestinal-related complications, including ileus, emesis, and/or need for post-op nasogastric tube placement, and 30-day readmissions were also compared between groups. Charge capture data were compared between groups to analyze cost impact. RESULTS: 29 patients each in the control and treatment group met inclusion criteria. Patients receiving N-methylnaltrexone had reduced length of stay compared with no N-methylnaltrexone (median 4 vs. 7 days, p < 0.01). Time to flatus and bowel movement, however, were similar. In a multivariable analysis controlling for possible confounders, however, the improvement in length of stay associated with N-methylnaltrexone use did not reach statistical significance (p = 0.11). Episodes of severe pain and composite gastrointestinal-related complications were reduced in the N-methylnaltrexone group (44.8% vs. 10.3%, p < 0.01). The reduction in length of stay was associated with approximately $10,500 in cost savings per patient. CONCLUSIONS: In this study, N-methylnaltrexone was associated with reduced length of stay, fewer episodes of severe pain, and reduced costs. These results provide the impetus for further study.


Assuntos
Cistectomia/métodos , Naltrexona/análogos & derivados , Antagonistas de Entorpecentes/uso terapêutico , Procedimentos Cirúrgicos Robóticos , Neoplasias da Bexiga Urinária/cirurgia , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Naltrexona/uso terapêutico , Complicações Pós-Operatórias/epidemiologia , Período Pós-Operatório , Compostos de Amônio Quaternário/uso terapêutico , Estudos Retrospectivos , Resultado do Tratamento
4.
Anesth Analg ; 125(5): 1784-1792, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-29049123

RESUMO

BACKGROUND: The United States is in the midst of an opioid epidemic, and opioid use disorder often begins with a prescription for acute pain. The perioperative period represents an important opportunity to prevent chronic opioid use, and recently there has been a paradigm shift toward implementation of enhanced recovery after surgery (ERAS) protocols that promote opioid-free and multimodal analgesia. The objective of this study was to assess the impact of an ERAS intervention for colorectal surgery on discharge opioid prescribing practices. METHODS: We conducted a historical-prospective quality improvement study of an ERAS protocol implemented for patients undergoing colorectal surgery with a focus on the opioid-free and multimodal analgesia components of the pathway. We compared patients undergoing colorectal surgery 1 year before implementation (June 15, 2015, to June 14, 2016) and 1 year after implementation (June 15, 2016, to June 14, 2017). RESULTS: Before the ERAS intervention, opioids at discharge were not significantly increasing (1% per month; 95% confidence interval [CI], -1% to 3%; P = .199). Immediately after the ERAS intervention, opioid prescriptions were not significantly lower (13%; 95% CI, -30% to 3%; P = .110). After the intervention, the rate of opioid prescriptions at discharge did not decrease significantly 1% (95% CI, -3% to 1%) compared to the pre-period rate (P = .399). Subgroup analysis showed that in patients with a combination of low discharge pain scores, no preoperative opioid use, and low morphine milligram equivalents consumption before discharge, the rate of discharge opioid prescription was 72% (95% CI, 61%-83%). CONCLUSIONS: This study is the first to report discharge opioid prescribing practices in an ERAS setting. Although an ERAS intervention for colorectal surgery led to an increase in opioid-free anesthesia and multimodal analgesia, we did not observe an impact on discharge opioid prescribing practices. The majority of patients were discharged with an opioid prescription, including those with a combination of low discharge pain scores, no preoperative opioid use, and low morphine milligram equivalents consumption before discharge. This observation in the setting of an ERAS pathway that promotes multimodal analgesia suggests that our findings are very likely to also be observed in non-ERAS settings and offers an opportunity to modify opioid prescribing practices on discharge after surgery. For opioid-free anesthesia and multimodal analgesia to influence the opioid epidemic, the dose and quantity of the opioids prescribed should be modified based on the information gathered by in-hospital pain scores and opioid use as well as pain history before admission.


Assuntos
Analgésicos não Narcóticos/administração & dosagem , Analgésicos Opioides/administração & dosagem , Colo/cirurgia , Procedimentos Cirúrgicos do Sistema Digestório/efeitos adversos , Manejo da Dor/métodos , Dor Pós-Operatória/tratamento farmacológico , Alta do Paciente , Reto/cirurgia , Adulto , Idoso , Analgésicos não Narcóticos/efeitos adversos , Analgésicos Opioides/efeitos adversos , Pesquisa Comparativa da Efetividade , Esquema de Medicação , Prescrições de Medicamentos , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Manejo da Dor/efeitos adversos , Medição da Dor , Dor Pós-Operatória/diagnóstico , Dor Pós-Operatória/etiologia , Padrões de Prática Médica , Avaliação de Programas e Projetos de Saúde , Estudos Prospectivos , Melhoria de Qualidade , Indicadores de Qualidade em Assistência à Saúde , Fatores de Tempo , Resultado do Tratamento
5.
Pain Med ; 18(5): 947-958, 2017 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-28482098

RESUMO

Objective: With the increasing societal awareness of the prevalence and impact of acute pain, there is a need to develop an acute pain classification system that both reflects contemporary mechanistic insights and helps guide future research and treatment. Existing classifications of acute pain conditions are limiting, with a predominant focus on the sensory experience (e.g., pain intensity) and pharmacologic consumption. Consequently, there is a need to more broadly characterize and classify the multidimensional experience of acute pain. Setting: Consensus report following expert panel involving the Analgesic, Anesthetic, and Addiction Clinical Trial Translations, Innovations, Opportunities, and Networks (ACTTION), American Pain Society (APS), and American Academy of Pain Medicine (AAPM). Methods: As a complement to a taxonomy recently developed for chronic pain, the ACTTION public-private partnership with the US Food and Drug Administration, the APS, and the AAPM convened a consensus meeting of experts to develop an acute pain taxonomy using prevailing evidence. Key issues pertaining to the distinct nature of acute pain are presented followed by the agreed-upon taxonomy. The ACTTION-APS-AAPM Acute Pain Taxonomy will include the following dimensions: 1) core criteria, 2) common features, 3) modulating factors, 4) impact/functional consequences, and 5) putative pathophysiologic pain mechanisms. Future efforts will consist of working groups utilizing this taxonomy to develop diagnostic criteria for a comprehensive set of acute pain conditions. Perspective: The ACTTION-APS-AAPM Acute Pain Taxonomy (AAAPT) is a multidimensional acute pain classification system designed to classify acute pain along the following dimensions: 1) core criteria, 2) common features, 3) modulating factors, 4) impact/functional consequences, and 5) putative pathophysiologic pain mechanisms. Conclusions: Significant numbers of patients still suffer from significant acute pain, despite the advent of modern multimodal analgesic strategies. Mismanaged acute pain has a broad societal impact as significant numbers of patients may progress to suffer from chronic pain. An acute pain taxonomy provides a much-needed standardization of clinical diagnostic criteria, which benefits clinical care, research, education, and public policy. For the purposes of the present taxonomy, acute pain is considered to last up to seven days, with prolongation to 30 days being common. The current understanding of acute pain mechanisms poorly differentiates between acute and chronic pain and is often insufficient to distinguish among many types of acute pain conditions. Given the usefulness of the AAPT multidimensional framework, the AAAPT undertook a similar approach to organizing various acute pain conditions.


Assuntos
Dor Aguda/classificação , Dor Aguda/diagnóstico , Algoritmos , Anamnese/métodos , Medição da Dor/métodos , Avaliação de Sintomas/métodos , Dor Aguda/epidemiologia , Medicina Baseada em Evidências , Humanos
6.
Anesth Analg ; 121(2): 340-7, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25993392

RESUMO

BACKGROUND: Lipid emulsion (LE) has been successfully used for resuscitation of local anesthetic cardiotoxicity caused by bupivacaine overdose. Opioid receptors have been shown to play a key role in cardio protection. We explored whether this rescue action of LE is mediated through opioid receptors. METHODS: Asystole was induced by bupivacaine (10 mg/kg over 20 seconds, IV) in young male Sprague-Dawley rats, and resuscitation with LE (intralipid 20%; 5 mL/kg bolus and 0.5 mL/kg/min maintenance) was started immediately. The rats were pretreated 2 minutes before inducing asystole with nonselective opioid receptor antagonists such as naloxone and naloxone methiodide, as well as highly selective opioid receptor antagonists for subtype κ, δ, and µ or phosphate buffer solution as a control. Heart rates and ejection fractions were measured using echocardiography. RESULTS: LE rescue of bupivacaine cardiotoxicity was prevented by high-dose (1 mg/kg) naloxone but not by lower doses of naloxone (1, 5, and 10 µg/kg), by naloxone methiodide (which does not cross the blood-brain barrier), and by a selective δ- and κ-opioid receptor antagonists at a higher (10 mg/kg) dose. Successful LE rescue was not affected by highly selective µ-opioid receptor antagonists. δ-Opioid receptor antagonist (10 mg/kg) pretreatment also resulted in reduced phosphorylation level of cardiac glycogen synthase kinase-3ß in rats that were not resuscitated by LE compared with control. CONCLUSIONS: Our data highlight the involvement of peripheral δ- and κ-opioid receptors in the rescue action of LE.


Assuntos
Anestésicos Locais , Bupivacaína , Emulsões Gordurosas Intravenosas/farmacologia , Parada Cardíaca/tratamento farmacológico , Miocárdio/metabolismo , Receptores Opioides kappa/metabolismo , Receptores Opioides mu/metabolismo , Animais , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Quinase 3 da Glicogênio Sintase/metabolismo , Glicogênio Sintase Quinase 3 beta , Parada Cardíaca/induzido quimicamente , Parada Cardíaca/metabolismo , Parada Cardíaca/fisiopatologia , Frequência Cardíaca/efeitos dos fármacos , Masculino , Antagonistas de Entorpecentes/farmacologia , Fosforilação , Ratos Sprague-Dawley , Transdução de Sinais/efeitos dos fármacos , Volume Sistólico/efeitos dos fármacos , Fatores de Tempo
7.
Crit Care Med ; 40(8): 2431-7, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22647409

RESUMO

OBJECTIVES: Lipid emulsion has been shown to be effective in resuscitating bupivacaine-induced cardiac arrest but its mechanism of action is not clear. Here we investigated whether fatty-acid oxidation is required for rescue of bupivacaine-induced cardiotoxicity by lipid emulsion in rats. We also compared the mitochondrial function and calcium threshold for triggering of mitochondrial permeability transition pore opening in bupivacaine-induced cardiac arrest before and after resuscitation with lipid emulsion. DESIGN: Prospective, randomized animal study. SETTING: University research laboratory. SUBJECTS: Adult male Sprague-Dawley rats. INTERVENTIONS: Asystole was achieved with a single dose of bupivacaine (10 mg/kg over 20 secs, intravenously) and 20% lipid emulsion infusion (5 mL/kg bolus, and 0.5 mL/kg/min maintenance), and cardiac massage started immediately. The rats in CVT-4325 (CVT) group were pretreated with a single dose of fatty-acid oxidation inhibitor CVT (0.5, 0.25, 0.125, or 0.0625 mg/kg bolus intravenously) 5 mins prior to inducing asystole by bupivacaine overdose. Heart rate, ejection fraction, fractional shortening, the threshold for opening of mitochondrial permeability transition pore, oxygen consumption, and membrane potential were measured. The values are mean ± SEM. MEASUREMENTS AND MAIN RESULTS: Administration of bupivacaine resulted in asystole. Lipid Emulsion infusion improved the cardiac function gradually as the ejection fraction was fully recovered within 5 mins (ejection fraction=64±4% and fractional shortening=36±3%, n=6) and heart rate increased to 239±9 beats/min (71% recovery, n=6) within 10 mins. Lipid emulsion was only able to rescue rats pretreated with low dose of CVT (0.0625 mg/kg; heart rate~181±11 beats/min at 10 mins, recovery of 56%; ejection fraction=50±1%; fractional shortening=26±0.6% at 5 mins, n=3), but was unable to resuscitate rats pretreated with higher doses of CVT (0.5, 0.25, or 0.125 mg/kg). The calcium-retention capacity in response to Ca²âº overload was significantly higher in cardiac mitochondria isolated from rats resuscitated with 20% lipid emulsion compared to the group that did not receive Lipid Emulsion after bupivacaine overdose (330±42 nmol/mg vs. 180±8.2 nmol/mg of mitochondrial protein, p<.05, n=3 in each group). The mitochondrial oxidative rate and membrane potential were similar in the bupivacaine group before and after resuscitation with lipid emulsion infusion. CONCLUSIONS: Fatty-acid oxidation is required for successful rescue of bupivacaine-induced cardiotoxicity by lipid emulsion. This rescue action is associated with inhibition of mitochondrial permeability transition pore opening.


Assuntos
Bupivacaína/farmacologia , Cálcio/metabolismo , Emulsões Gordurosas Intravenosas/uso terapêutico , Ácidos Graxos/metabolismo , Parada Cardíaca/terapia , Homeostase/efeitos dos fármacos , Animais , Parada Cardíaca/induzido quimicamente , Parada Cardíaca/tratamento farmacológico , Parada Cardíaca/metabolismo , Massagem Cardíaca , Hemodinâmica/efeitos dos fármacos , Masculino , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Mitocôndrias Cardíacas/efeitos dos fármacos , Mitocôndrias Cardíacas/metabolismo , Oxidiazóis/farmacologia , Oxirredução/efeitos dos fármacos , Ratos , Ratos Sprague-Dawley
8.
Anesthesiology ; 117(4): 836-46, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22814384

RESUMO

BACKGROUND: We have recently shown that postischemic administration of intralipid protects the heart against ischemia-reperfusion injury. Here we compared the cardioprotective effects of intralipid with cyclosporine-A, a potent inhibitor of the mitochondrial permeability transition pore opening. METHODS: In vivo rat hearts or isolated Langendorff-perfused mouse hearts were subjected to ischemia followed by reperfusion with intralipid (0.5%, 1% and 2% ex-vivo, and 20% in vivo), cyclosporine-A (0.2 µM, 0.8 µM, and 1.5 µM ex- vivo and 10 mg/kg in vivo), or vehicle. The hemodynamic function, infarct size, calcium retention capacity, mitochondrial superoxide production, and phosphorylation levels of protein kinase B (Akt)/glycogen synthase kinase-3ß (GSK-3ß) were measured. The values are mean ± SEM. RESULTS: Administration of intralipid at reperfusion significantly reduced myocardial infarct size compared with cyclosporine-A in vivo (infarct size/area at risk)%: 22.9 ± 2.5% vs. 35.2 ± 3.5%; P = 0.030, n = 7/group). Postischemic administration of intralipid at its optimal dose (1%) was more effective than cyclosporine-A (0.8 µM) in protecting the ex vivo heart against ischemia-reperfusion injury, as the rate pressure product at the end of reperfusion was significantly higher (mmHg · beats/min: 12,740 ± 675 [n = 7] vs. 9,203 ± 10,781 [n = 5], P = 0.024), and the infarct size was markedly smaller (17.3 ± 2.9 [n = 7] vs. 29.2 ± 2.7 [n = 5], P = 0.014). Intralipid was as efficient as cyclosporine-A in inhibiting the mitochondrial permeability transition pore opening (calcium retention capacity = 280 ± 8.2 vs. 260.3 ± 2.9 nmol/mg mitochondria protein in cyclosporine-A, P = 0.454, n = 6) and in reducing cardiac mitochondrial superoxide production. Unlike intralipid, which increased phosphorylation of Akt (6-fold) and GSK-3ß (5-fold), cyclosporine-A had no effect on the activation of these prosurvival kinases. CONCLUSIONS: Although intralipid inhibits the opening of the mitochondrial permeability transition pore as efficiently as cyclosporine-A, intralipid is more effective in reducing the infarct size and improving the cardiac functional recovery.


Assuntos
Cardiotônicos , Ciclosporina/farmacologia , Emulsões Gordurosas Intravenosas/farmacologia , Imunossupressores/farmacologia , Traumatismo por Reperfusão Miocárdica/prevenção & controle , Fosfolipídeos/farmacologia , Óleo de Soja/farmacologia , Animais , Infarto Miocárdico de Parede Anterior/patologia , Western Blotting , Cálcio/metabolismo , Cálcio/farmacologia , Vasos Coronários/fisiologia , Relação Dose-Resposta a Droga , Espectroscopia de Ressonância de Spin Eletrônica , Emulsões/farmacologia , Quinase 3 da Glicogênio Sintase/metabolismo , Glicogênio Sintase Quinase 3 beta , Testes de Função Cardíaca , Técnicas In Vitro , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Mitocôndrias Cardíacas/efeitos dos fármacos , Traumatismo por Reperfusão Miocárdica/patologia , Necrose , Proteína Oncogênica v-akt/metabolismo , Permeabilidade , Ratos , Ratos Sprague-Dawley , Espécies Reativas de Oxigênio/análise , Espécies Reativas de Oxigênio/metabolismo
10.
Anesth Analg ; 114(2): 462-5, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22104074

RESUMO

BACKGROUND: Determining the superior cervical ganglion's precise anatomical location for local anesthetic block, when stellate block is not feasible or is contraindicated, is difficult. METHODS: We dissected the superior cervical ganglion in 60 embalmed cadaveric specimens. Multiple regressions determined whether subject characteristics predicted the distance between the superior cervical ganglion and common carotid artery bifurcation and the superior cervical ganglion dimensional width and area. Based on these regressions, we mapped the ganglion and common carotid artery bifurcation using a pseudocolor statistical heat map. RESULTS: The statistical model significantly predicted the superior cervical ganglion-common carotid artery bifurcation distance (P = 0.01), and the superior cervical ganglion dimensional width (P = 0.02). CONCLUSION: This study determined that the common carotid artery bifurcation is a good landmark for localizing the superior cervical ganglion for anesthetic block.


Assuntos
Pontos de Referência Anatômicos , Artéria Carótida Primitiva/anatomia & histologia , Modelos Estatísticos , Gânglio Cervical Superior/anatomia & histologia , Idoso , Idoso de 80 Anos ou mais , Anestésicos Locais/administração & dosagem , Cadáver , Artéria Carótida Primitiva/diagnóstico por imagem , Dissecação , Feminino , Humanos , Injeções , Masculino , Bloqueio Nervoso , Análise de Regressão , Tomografia Computadorizada por Raios X , Ultrassonografia Doppler
11.
J Clin Anesth ; 79: 110751, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35334291

RESUMO

STUDY OBJECTIVE: The primary aim of this study is to understand how intraoperative medication administration patterns change in response to ERAS® protocol implementation for patients who underwent laparoscopic donor nephrectomy. DESIGN: Single-center, retrospective analysis of laparoscopic donor nephrectomy patients. SETTING: Large tertiary academic medical center. PATIENTS: We divided all cases of laparoscopic donor nephrectomies (n = 929) over seven years into three approximately equal time periods: Pre-ERAS 1 (n = 317), Pre-ERAS 2 (n = 297) and Post-ERAS (n = 315). MEASUREMENTS: We examined patient demographics, intraoperative opioid and non-opioid pain adjuvant administration, Post Anesthesia Recovery Unit (PACU) pain scores and opioid use as well as PACU and hospital lengths of stay (LOS). MAIN RESULTS: Segmented regression analysis of interrupted time series was utilized to evaluate the association of ERAS protocol implementation with the amount of intraoperative opioid and non-opioid pain adjuvant use. In adherence to our institutional ERAS protocol, there was a significant reduction in intraoperative fentanyl use after ERAS protocol of -70.2µg (95% CI -106.0, -34.2, p < 0.001) and a significant increase in intraoperative hydromorphone use of 0.47 mg (95% CI 0.284, 0.655, p < 0.001). However, in contrary to our ERAS protocol, we found no significant change in odds of receiving IV acetaminophen OR 1.31 (95% CI 0.450, 3.76, p = 0.613) or IV ketorolac OR 1.65 (95% CI 0.804, 3.41, p = 0.172) after ERAS protocol implementation. We found a significant reduction in PACU opioid use of -9.68 Morphine Milligram Equivalents (MME) (95% CI -17.1, -2.31, p = 0.010) but no significant change in PACU initial pain score, PACU LOS and hospital LOS. CONCLUSIONS: We examined intraoperative practice pattern changes by anesthesiologists in response to ERAS protocol implementation for laparoscopic donor nephrectomies. Our results suggest that there was a variable uptake of recommendations from ERAS protocol. While ERAS protocols are often studied as a bundle of best practice recommendations, understanding the variability of provider adherence represents an important future research direction for the ERAS initiative.


Assuntos
Recuperação Pós-Cirúrgica Melhorada , Laparoscopia , Analgésicos/uso terapêutico , Analgésicos Opioides/uso terapêutico , Humanos , Laparoscopia/efeitos adversos , Tempo de Internação , Nefrectomia/efeitos adversos , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/prevenção & controle , Estudos Retrospectivos
12.
Anesthesiology ; 115(2): 242-53, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21691195

RESUMO

BACKGROUND: Intralipid (Sigma, St. Louis, MO), a brand name for the first safe fat emulsion for human use, has been shown to be cardioprotective. However, the mechanism of this protection is not known. The authors investigated the molecular mechanism(s) of Intralipid-induced cardioprotection against ischemia/reperfusion injury, particularly the role of glycogen synthase kinase-3ß (GSK-3ß) and mitochondrial permeability transition pore in this protective action. METHODS: In vivo rat hearts or isolated Langendorff-perfused mouse hearts were subjected to ischemia followed by reperfusion with Intralipid (1% in ex vivo and one bolus of 20% in in vivo) or vehicle. The hemodynamic function, infarct size, threshold for the opening of mitochondrial permeability transition pore, and phosphorylation levels of protein kinase B (Akt)/extracellular signal regulating kinase (ERK)/GSK-3ß were measured. RESULTS: Administration of Intralipid at the onset of reperfusion resulted in approximately 70% reduction in infarct size in the in vivo rat model. Intralipid also significantly improved functional recovery of isolated Langendorff-perfused mouse hearts as the rate pressure product was increased from 2,999 ± 863 mmHg*beats/min in the control group to 13,676 ± 611 mmHg*beats/min (mean±SEM) and the infarct size was markedly smaller (18.3 ± 2.4% vs. 54.8 ± 2.9% in the control group, P < 0.01). The Intralipid-induced cardioprotection was fully abolished by LY294002, a specific inhibitor of PI3K, but only partially by PD98059, a specific ERK inhibitor. Intralipid also increased the phosphorylation levels of Akt/ERK1/glycogen synthase kinase-3ß by eightfold, threefold, and ninefold, respectively. The opening of mitochondrial permeability transition pore was inhibited by Intralipid because calcium retention capacity was higher in the Intralipid group (274.3 ± 8.4 nM/mg vs. 168.6 ± 9.6 nM/mg in the control group). CONCLUSIONS: Postischemic treatment with Intralipid inhibits the opening of mitochondiral permeability transition pore and protects the heart through glycogen synthase kinase-3ß via PI3K/Akt/ERK pathways.


Assuntos
Quinase 3 da Glicogênio Sintase/fisiologia , Pós-Condicionamento Isquêmico , Traumatismo por Reperfusão Miocárdica/prevenção & controle , Animais , Cálcio/metabolismo , Cromonas/farmacologia , Emulsões/uso terapêutico , MAP Quinases Reguladas por Sinal Extracelular/metabolismo , Flavonoides/farmacologia , Glicogênio Sintase Quinase 3 beta , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Morfolinas/farmacologia , Fosfatidilinositol 3-Quinases/fisiologia , Inibidores de Fosfoinositídeo-3 Quinase , Fosfolipídeos/uso terapêutico , Fosforilação , Ratos , Ratos Sprague-Dawley , Óleo de Soja/uso terapêutico
14.
Local Reg Anesth ; 14: 57-65, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33907461

RESUMO

The quadratus lumborum block is a novel truncal block where local anaesthetic is injected adjacent to the quadratus lumborum muscle. It is used for caesarean sections, hip arthroplasty, gynecologic surgery, colectomy, and recently nephrectomy. To date, there are no reviews that outline the efficacy and performance of the quadratus lumborum blocks in patients receiving laparoscopic nephrectomy. The objective of this project was to outline the current available data from both clinical trials along with case series and reports regarding the methods and utility of quadratus lumborum blocks for analgesia in patients receiving nephrectomy. For this literature review, we searched Pubmed, Embase, and Web of Science from their inception until 5/31/2020. Our search terms were as follows: "(nephrectomy OR laparoscopic nephrectomy) AND (QL block OR Quadratus Lumborum block OR QL OR TQL OR Thoracolumbar fascia block)." We analyzed all relevant clinical trials for quality using the Jadad scale. Our search yielded a total of 30 articles, 23 of which we ultimately reviewed for this manuscript. The qualitative sum of these data show that patients receiving quadratus lumborum block for nephrectomies have reduced opioid requirements, reduced pain scores, and improved side-effects relative to other analgesic modalities like epidurals. Based on these findings, we conclude that the quadratus lumborum block is a useful analgesic for patients undergoing nephrectomy.

15.
J Pain ; 22(8): 892-904, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33848682

RESUMO

Patients undergoing thoracic surgery experience particular challenges for acute pain management. Availability of standardized diagnostic criteria for identification of acute pain after thoracotomy and video assisted thoracic surgery (VATS) would provide a foundation for evidence-based management and facilitate future research. The Analgesic, Anesthetic, and Addiction Clinical Trial Translations, Innovations, Opportunities, and Networks (ACTTION) public-private partnership with the United States Food and Drug Administration, the American Pain Society (APS), and the American Academy of Pain Medicine (AAPM) formed the ACTTION-APS-AAPM Pain Taxonomy (AAAPT) initiative to address absence of acute pain diagnostic criteria. A multidisciplinary working group of pain experts was invited to develop diagnostic criteria for acute thoracotomy and VATS pain. The working group used available studies and expert opinion to characterize acute pain after thoracotomy and VATS using the 5-dimension taxonomical structure proposed by AAAPT (i.e., core diagnostic criteria, common features, modulating factors, impact/functional consequences, and putative mechanisms). The resulting diagnostic criteria will serve as the starting point for subsequent empirically validated criteria. PERSPECTIVE ITEM: This article characterizes acute pain after thoracotomy and VATS using the 5-dimension taxonomical structure proposed by AAAPT (ie, core diagnostic criteria, common features, modulating factors, impact and/or functional consequences, and putative mechanisms).


Assuntos
Dor Aguda/diagnóstico , Dor Pós-Operatória/diagnóstico , Guias de Prática Clínica como Assunto/normas , Sociedades Médicas/normas , Procedimentos Cirúrgicos Torácicos/efeitos adversos , Humanos
16.
J Gastrointest Surg ; 25(1): 293-302, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32779081

RESUMO

Postoperative ileus (POI) and constipation are common secondary effects of opioids and carry significant clinical and economic impacts. µ-Opioid receptors mediate opioid analgesia in the central nervous system (CNS) and gastrointestinal-related effects in the periphery. Peripherally acting µ-opioid receptor antagonists (PAMORAs) block the peripheral effects of opioids in the gastrointestinal tract, while maintaining opioid analgesia in the CNS. While most are not approved for POI or postoperative opioid-induced constipation (OIC), PAMORAs have a potential role in these settings via their selective effects on the µ-opioid receptor. This review will discuss recent clinical trials evaluating the safety and efficacy of PAMORAs, with a focus on alvimopan (Entereg®) and methylnaltrexone (Relistor®) in patients with POI or postoperative OIC. We will characterize potential factors that may have impacted the efficacy observed in phase 3 trials and discuss future directions for the management and treatment of POI.


Assuntos
Íleus , Antagonistas de Entorpecentes , Analgésicos Opioides/efeitos adversos , Constipação Intestinal/induzido quimicamente , Constipação Intestinal/tratamento farmacológico , Humanos , Íleus/tratamento farmacológico , Antagonistas de Entorpecentes/uso terapêutico , Complicações Pós-Operatórias/tratamento farmacológico
17.
Am J Ther ; 16(4): 300-3, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19092638

RESUMO

This article reviews certain aspects of venous thromboembolism, a major cause of morbidity and mortality among hospitalized patients. Deep vein thrombosis is a frequent complication of various surgical procedures. Knowing predisposing factors, including hereditary causes, and triggering risk factors will help us identify patients with high risk of venous thromboembolism. The prophylaxis recommendations by American College of Chest Physicians are made for groups of patients, for whom the benefits seem to outweigh the risks. However, those readers who want to adopt the American College of Chest Physicians' guidelines in their practices are urged to review in detail the pharmacology of the drugs used for thromboprophylaxis, relevant clinical studies, and case reports of spinal hematoma. Each patient might have different risks for thrombosis or bleeding and the potential for adverse consequences due to the prophylaxis. What is best for the group (the epidemiologic perspective) is not necessarily what is best for the individual patient (the clinical perspective).


Assuntos
Anestesia por Condução , Anticoagulantes/uso terapêutico , Fibrinolíticos/uso terapêutico , Embolia Pulmonar/prevenção & controle , Tromboembolia Venosa/prevenção & controle , Trombose Venosa/prevenção & controle , Fidelidade a Diretrizes , Humanos , Guias de Prática Clínica como Assunto , Embolia Pulmonar/tratamento farmacológico , Embolia Pulmonar/etiologia , Fatores de Risco , Procedimentos Cirúrgicos Operatórios/efeitos adversos , Tromboembolia Venosa/tratamento farmacológico , Tromboembolia Venosa/etiologia , Trombose Venosa/tratamento farmacológico , Trombose Venosa/etiologia
18.
Pancreas ; 48(5): 719-725, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31091221

RESUMO

OBJECTIVES: The aim of this study was to evaluate the impact of epidural analgesia (EA) on postoperative length of stay (LOS), expeditious discharge, and pain relief after pancreaticoduodenectomy (PD) and distal pancreatectomy (DP). METHODS: Retrospective reviews of 2014-2015 American College of Surgeons National Surgical Quality Improvement Program databases and our institutional pancreatic surgery database were conducted. RESULTS: On univariate analysis, EA was associated with statistically significant longer lengths of stay for both PD and DP. On comparative analysis at mode LOS, discharged before versus after 7 days for PD and 6 days for DP, EA was a significant predictor for the longer groups for both procedures on multivariable analysis (PD, odds ratio of 1.465, P < 0.001; DP, odds ratio of 1.471, P = 0.004). On review of our institution's pancreatic surgery database, patient-reported pain scores were significantly lower in the EA groups than intravenous narcotics groups on the day of surgery only for both PD and DP. CONCLUSIONS: Epidural analgesia was associated with longer LOS with a most pronounced effect on early discharge after surgery for patients undergoing open PD and DP. It only resulted in superior pain control on the day of surgery.


Assuntos
Analgesia Epidural/estatística & dados numéricos , Tempo de Internação/estatística & dados numéricos , Dor Pós-Operatória/prevenção & controle , Pancreatectomia/métodos , Pancreaticoduodenectomia/métodos , Alta do Paciente/estatística & dados numéricos , Idoso , Analgesia Epidural/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor/métodos , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/fisiopatologia , Pancreatectomia/efeitos adversos , Pancreaticoduodenectomia/efeitos adversos , Estudos Retrospectivos
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