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Journal of Clinical Anesthesia Jun 2024Describe dosing of local anesthetic when both a periarticular injection (PAI) and peripheral nerve block (PNB) are utilized for knee arthroplasty analgesia, and compare...
STUDY OBJECTIVE
Describe dosing of local anesthetic when both a periarticular injection (PAI) and peripheral nerve block (PNB) are utilized for knee arthroplasty analgesia, and compare the dosing of local to suggested maximum dosing, and look for evidence of local anesthetic systemic toxicity (LAST).
DESIGN
A single center retrospective cohort study between May 2018 and November 2022.
SETTING
A major academic hospital.
PATIENTS
Patients who had both a PAI and PNB while undergoing primary, revision, total, partial, unilateral, or bilateral knee arthroplasty.
INTERVENTIONS
None.
MEASUREMENTS
Calculate the dose of local anesthetic given via PAI, PNB, and both routes combined as based on lean body weight and compare that to the suggested maximum dosing. Look for medications, clinical interventions, and critical event notes suggestive of a LAST event.
MAIN RESULTS
There were 4527 knee arthroplasties where both a PAI and PNB were performed during the study period. When combining PAI and PNB doses, >75% of patients received more than the suggested maximum dose of 3 mg/kg lean body weight. The median local anesthetic dosing over the study period, 4.4 mg/kg (IQR 3.5,5.9), was 147% of the suggested maximum dose (IQR 117,197). There was no conclusive evidence of LAST among any of the patients in the study.
CONCLUSIONS
Over the course of our study, we had 4527 knee arthroplasties with a median PAI and PNB local anesthetic dose that was 147% of the suggested maximum without any clear clinical evidence of a LAST event.
PubMed: 38943851
DOI: 10.1016/j.jclinane.2024.111534 -
Peptides Jun 2024This paper is the forty-sixth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles... (Review)
Review
This paper is the forty-sixth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2023 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug and alcohol abuse (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
PubMed: 38943841
DOI: 10.1016/j.peptides.2024.171268 -
The Knee Jun 2024The average rate of patient dissatisfaction following total knee arthroplasty (TKA) is 10%. Multi-modal analgesia is the present standard of pain management after TKA....
BACKGROUND
The average rate of patient dissatisfaction following total knee arthroplasty (TKA) is 10%. Multi-modal analgesia is the present standard of pain management after TKA. Studies show that with multi-modal analgesia, approximately 60% of patients experience severe knee pain following surgery, while around 30% experience moderate pain. To date, there is no literature available on targeted pain management using bone cement.
OBJECTIVES
To investigate the feasibility of incorporating anti-inflammatory medications and identify the analgesic with the best release pharmacokinetics from bone cement for application in pain management.
METHODS
In an in-vitro study, 100 mg of five drugs (aceclofenac, diclofenac, naproxen, paracetamol and methyl prednisolone) were incorporated into bone cement (Palacos). Cement cubes holding each drug were made and allowed to harden for 30 min. Each drug-containing cube was placed in a beaker with saline for 72 h. Fractions of 10 ml were collected at 0, 6, 24, 48 and 72 h and analysed using high-pressure liquid chromatography to measure the percentage release of the drug from bone cement.
RESULTS
Naproxen showed superior elution from bone cement, with 10.9% at 24 h and 9.08% at 72 h. Paracetamol showed 4.9% at 24 h and 3.78% at 72 h, aceclofenac 0.2% at 24 h and 0.4% at 72 h, diclofenac 3.03% at 24 h and 1.99% at 72 h, and methylprednisolone 0.26% at 24 h and 0.32% at 72 h.
CONCLUSIONS
Polymethylmethacrylate bone cement can elute analgesics in vitro. Among the five drugs studied, naproxen had the best release kinematics from polymethylmethacrylate bone cement. Analgesic eluting bone cement is a novel approach for targeted postoperative pain management in TKA.
PubMed: 38943788
DOI: 10.1016/j.knee.2024.05.012 -
Otolaryngology--head and Neck Surgery :... Jun 2024To evaluate patients' satisfaction with opioid versus opioid-sparing postoperative analgesia in patients undergoing outpatient head and neck surgery.
OBJECTIVE
To evaluate patients' satisfaction with opioid versus opioid-sparing postoperative analgesia in patients undergoing outpatient head and neck surgery.
STUDY DESIGN
Prospective randomized trial.
SETTING
Tertiary care academic hospital.
METHODS
Adult patients undergoing outpatient head and neck surgery were randomly assigned to 1 of 3 analgesic regimens. First- and second-line medications were the following by group (1) Hydrocodone-acetaminophen with ibuprofen, (2) ibuprofen with hydrocodone-acetaminophen, and (3) ibuprofen with acetaminophen. Preoperative counseling was provided to patients regarding expected pain and proper medication use. Postoperative questionnaires were administered to assess satisfaction.
RESULTS
One hundred three patients were enrolled in the study (mean age, 56.5 years; women, 75 [73%]). The mean satisfaction score with the pain regimen assigned was similar between the 3 groups (scale 0-10, [7.7, 8.3, 8.5, P = .46]). A similar percentage of patients in each group reported that surgery was more painful than anticipated (25%, 32%, 26%, P = .978), and a similar percentage of patients reported willingness to utilize the same analgesic regimen following future surgeries (75%, 83%, 76%, P = .682). Additional questions evaluating the side effect profile, maximum and minimum pain scores, and difficulty of recovery were not statistically different between the 3 groups.
CONCLUSION
In the postoperative population for outpatient head and neck surgeries, there was no significant difference in patient satisfaction and pain control between the opioid and nonopioid arms. Providers should discuss opioid-sparing regimens preoperatively with patients and describe them as effective in providing adequate pain control without a significant impact on patient's perception of care.
PubMed: 38943454
DOI: 10.1002/ohn.885 -
NeuroRehabilitation 2024It has been suggested that transcutaneous spinal cord stimulation (SCS) is effective in the rehabilitation of patients with spinal cord injury (SCI). However, the... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
It has been suggested that transcutaneous spinal cord stimulation (SCS) is effective in the rehabilitation of patients with spinal cord injury (SCI). However, the evidence is mainly based on case reports.
OBJECTIVE
To summarize the influence of transcutaneous SCS on extremity motor function of patients with SCI in a meta-analysis.
METHODS
A systematic literature search was performed in electronic databases including PubMed, Cochrane library, Embase, Web of Science, Wanfang, and CNKI to obtain relevant randomized controlled trials (RCTs). A random-effects model was used to pool the results by incorporating the impact of the potential heterogeneity. The most recent database search was conducted on December 31, 2023.
RESULTS
Six small-scale open-label or single-blind RCTs were included. Transcutaneous SCS on the basis of conventional rehabilitation could significantly improve limb strength (mean difference: 4.82, p = 0.004; I2 = 0%) and attenuate spasticity (MD: -0.40, p = 0.02; I2 = 0%). The upper-extremity motor function was not significantly affected (p = 0.75). However, transcutaneous SCS significantly improved mobility as indicated by walking speed (MD: 0.13 m/s, p = 0.009; I2 = 0%) and walking distance (standardized MD: 0.62, I2 = 0%).
CONCLUSION
Transcutaneous SCS is effective in improving limb strength, spasticity and mobility of patients with SCI.
Topics: Spinal Cord Injuries; Humans; Spinal Cord Stimulation; Transcutaneous Electric Nerve Stimulation; Randomized Controlled Trials as Topic; Outcome Assessment, Health Care
PubMed: 38943403
DOI: 10.3233/NRE-240057 -
Nigerian Journal of Clinical Practice Jun 2024The creation of pneumoperitoneum using higher pressure is believed to be associated with increased postoperative abdominal pain. (Randomized Controlled Trial)
Randomized Controlled Trial Comparative Study
BACKGROUND
The creation of pneumoperitoneum using higher pressure is believed to be associated with increased postoperative abdominal pain.
AIM
This study aimed to compare postoperative abdominal pain following low pressure laparoscopic appendectomy and standard pressure laparoscopic appendectomy.
METHODS
This was a prospective, double-blind, randomized controlled trial of 54 patients aged between 18 and 56 years with clinical and/or radiologic diagnosis of acute appendicitis. The patients were randomly allocated to two groups: low pressure laparoscopic appendectomy (n = 26) and standard pressure laparoscopic appendectomy (n = 28). The intra-abdominal pressure was kept in either low pressure (9 mm Hg) or standard pressure (13 mm Hg). Abdominal and shoulder pain scores were assessed using the visual analog scale at 6 hours and 3 days post procedure. Postoperative analgesia requirement, duration of surgery, complications, and hospital stay were recorded.
RESULTS
Both groups match for the demographic parameters. Three patients required conversion from low to standard pressure. There was no difference between the two groups in terms of abdominal pain (P = 0.86) and shoulder pain (P = 0.33), duration of surgery (P = 0.51), complications (P = 0.17), and length of hospital stay (P = 0.83).
CONCLUSION
The use of low pressure pneumoperitoneum did not reduce the incidence of abdominal pain in patients who had laparoscopic appendectomy. Patients with acute appendicitis can be treated with either low or normal pressure pneumoperitoneum depending on the experience of the surgeon.
Topics: Humans; Appendectomy; Adult; Laparoscopy; Female; Male; Pneumoperitoneum, Artificial; Double-Blind Method; Appendicitis; Middle Aged; Prospective Studies; Pain, Postoperative; Young Adult; Adolescent; Pressure; Length of Stay; Pain Measurement; Treatment Outcome; Abdominal Pain
PubMed: 38943300
DOI: 10.4103/njcp.njcp_802_23 -
Regional Anesthesia and Pain Medicine Jun 2024Regional anesthesia (RA) is commonly used in perioperative settings of developed and well-resourced environments. RA has significant potential benefits when used in...
Regional anesthesia (RA) is commonly used in perioperative settings of developed and well-resourced environments. RA has significant potential benefits when used in resource-limited environments, including disaster, mass casualty, and wartime environments. RA offers benefits over general anesthesia and opioid-based analgesia, including decreased risk of complications, decreased reliance on mechanical ventilation, improved cost efficiency, and others. The decreasing cost of ultrasound matched with its smaller size and portability increases the availability of ultrasound in these environments, making ultrasound-guided RA more feasible. This daring discourse discusses some historical examples of RA in ultralow resource environments, both man-made disasters and natural disasters. Future investigations should increase the usefulness and availability of RA in resource-limited environments.
PubMed: 38942425
DOI: 10.1136/rapm-2024-105680 -
Annals of Vascular Surgery Jun 2024Our objective is twofold: determining if simulation allows residents to reach proficient surgeons' performance concerning Fundamental technical skills of EndoVascular...
OBJECTIVES
Our objective is twofold: determining if simulation allows residents to reach proficient surgeons' performance concerning Fundamental technical skills of EndoVascular Surgery (FEVS) and to while investigating the effects of the program on surgeon's stress.
MATERIAL & METHODS
Using a FEVS training simulator, 8 endovascular FEVS were performed by vascular surgery residents (simulator-naive (SNR) or simulator-experienced (SER)) and seniors. Total time needed to complete the 8 tasks, called Total Completion Time (TCT), was the main evaluation criterion. Analgesia Nociception Index (ANI), was monitored during simulation. Likert scale questionnaire was filled after each simulation.
RESULTS
For each task, TCT was significantly lower for SER and seniors than SNR (p=0.0163). After only 5 simulations, SER were able to reach and even exceed the seniors' level in terms of TCT, with a median time of 10.8 minutes for SER and 11.9 minutes for seniors, and wire's movements with a median distance during cannulation of 4.44 m for SER and 4.17m for seniors. Seniors remained better than SER in terms of precise wire manipulation (wire movement after cannulation), 4.17m against 4.44m (3.72-5.96) respectively. Based on the Likert scale, stress analysis, seniors felt less stressed than both residents' groups (p=0.0618). Seniors' initial ANI and mean ANI over the session was were significantly lower than those of the residents, p=0.0358 and p=0.0250 respectively.
CONCLUSION
We showed that 5 simulation sessions allowed residents to reach experienced surgeons' capacities on FEVS concerning TCT. Subjectively, seniors felt less stressed than residents, contrary to the results of our objective measures of stress.
PubMed: 38942373
DOI: 10.1016/j.avsg.2024.05.004 -
American Journal of Ophthalmology Jun 2024Pan-retinal photocoagulation (PRP) is the mainstay of treatment for proliferative diabetic retinopathy (PDR), reducing the risk of severe vision loss. Pain poses a... (Review)
Review
PURPOSE
Pan-retinal photocoagulation (PRP) is the mainstay of treatment for proliferative diabetic retinopathy (PDR), reducing the risk of severe vision loss. Pain poses a potential obstacle to effective laser delivery and patient compliance. Therefore, implementing pain relief strategies can enhance both treatment efficacy and patient comfort.
DESIGN
A systematic review and meta-analysis.
METHODS
We conducted a systematic review and meta-analysis according to PRISMA guidelines. The PubMed, Embase and Cochrane Central Register of Controlled Trials databases were searched for randomized controlled trials (RCTs) that enrolled patients undergoing PRP due to DR and compared analgesics or non-steroidal anti-inflammatory drugs (NSAID) to placebo. Pain was evaluated with the visual analogue scale. The version 2 of the Cochrane Collaboration's Risk of Bias in Randomized Controlled Trials tool and its version for crossover trials were used to assess the risk of bias. The Grading of Recommendations, Assessment, Development, and Evaluation tool was used to measure the certainty of evidence.
RESULTS
A total of 13 studies were included, comprising 1404 eyes from RCTs, nine of which were crossover. Patients who were administered analgesia reported a significantly lower pain sensitivity compared to those who received placebo (Standardized mean difference [SMD] -0.38; 95% confidence interval [CI] -0.58, -0.17; P<0.01; I=69%). Subgroup analysis of systemic administration of analgesics/NSAIDs (metamizole, Entonox, acetaminophen, ibuprofen, caffeine, mefenamic acid, intramuscular ketorolac tromethamine, and potassium diclofenac) also showed a statistically significant reduction in pain when compared to placebo (SMD -0.28; 95% CI -0.50, -0.07; P<0.01; I=43%). Exclusive eye drops administration (ketorolac tromethamine 0.5% and sodium diclofenac 0.1%) also showed a significant difference in pain sensitivity (SMD -0.46; 95% CI -0.88, -0.05; I=83%), however with a more significant heterogeneity.
CONCLUSION
The results of this meta-analysis including over 1000 patients demonstrated that the use of analgesics significantly reduced pain sensitivity during PRP, and systemic analgesia is potentially better than topical administration when compared to placebo.
PubMed: 38942228
DOI: 10.1016/j.ajo.2024.06.018 -
British Journal of Hospital Medicine... Jun 2024Poorly controlled pain is common after emergency laparotomy. It causes distress, hinders rehabilitation, and predisposes to complications: prolonged hospitalisation,... (Review)
Review
Poorly controlled pain is common after emergency laparotomy. It causes distress, hinders rehabilitation, and predisposes to complications: prolonged hospitalisation, persistent pain, and reduced quality of life. The aim of this systematic review was to compare the relative efficacies of pre-emptive analgesia for emergency laparotomy to inform practice. We performed a search of MEDLINE, MEDLINE In-Process, Embase, PubMed, Web of Science and SCOPUS for comparator studies of preoperative/intraoperative interventions to control/reduce postoperative pain in adults undergoing emergency laparotomy (EL) for general surgical pathologies. Exclusion criteria: surgery including non-abdominal sites; postoperative sedation and/or intubation; non-formal assessment of pain; non-English manuscripts. All manuscripts were screened by two investigators. We identified 2389 papers. Following handsearching and removal of duplicates, 1147 were screened. None were eligible for inclusion, with many looking at elective and/or laparoscopic surgeries. Our findings indicate there is no evidence base for pre-emptive analgesic strategies in emergency laparotomy. This contrasts substantially with elective cohorts. Potential reasons include variation in practice, management of physiological derangement taking priority, and perceived contraindications to neuraxial techniques. We urge a review of contemporary practice, with analysis of clinical data, to generate expert consensus.
Topics: Humans; Laparotomy; Pain, Postoperative; Analgesia; Pain Management; Emergencies; Analgesics; Analgesics, Opioid
PubMed: 38941975
DOI: 10.12968/hmed.2023.0409