Surgical Site Infections and the Use of Forced-Air Warming Devices During Surgical Procedures: A Systematic Review and Meta-Analysis

Forced-air warming (FAW) is effective in preventing hypothermia, yet its effect on surgical site infections (SSIs) remains debated. This systematic review synthesizes available evidence on the effect of FAW devices on SSI incidence among surgical patients. We searched several databases and identified 14 studies, including randomized controlled trials, nonrandomized controlled trials, and observational studies, that compared FAW devices to other warming methods or no warming in adult patients undergoing elective or emergency surgeries. The Effective Public Health Practice Project tool was used for quality assessment, and a narrative synthesis and meta-analysis were performed. The pooled analysis did not show a significant increase in SSI risk with FAW use. However, heterogeneity in study designs and small sample sizes limit the generalizability of findings. Future research should focus on larger, multicenter randomized controlled trials in diverse surgical settings and documenting patient characteristics and anesthetic methods.

Effect of intravenous lidocaine on postoperative fatigue syndrome in patients undergoing laparoscopic radical colorectal cancer surgery: a randomized clinical trial

To investigate the effect of intravenous lidocaine on postoperative fatigue syndrome (POFS) in laparoscopic radical colorectal cancer surgery patients, a randomized controlled trial enrolled 86 patients aged over 18 with preoperative Christensen score ≤ 4 at Xuzhou Central Hospital from September 2023 to June 2024. The lidocaine group (group L) received an intravenous infusion of 1.5 mg·kg-1 of lidocaine for 15 min, 30 min prior to anesthetic induction, followed by sustained infusion at 1.5 mg·kg- 1·h- 1 until surgical closure. The control group (group C) received an equal volume of normal saline in the same manner. Compared with the group C, the time-weighted average (TWA) of Christensen score in the group L decreased by 0.42 (95% CI, 0.12 ~ 0.73, P < 0.05). Compared with the group C, the VAS at 1,3 and 5 days after surgery in the group L were lower (P < 0.05), the levels of IL-6 and TNF-α immediately after surgery and 24 h after surgery were lower (P < 0.05), and the time to first flatus and defecation was shorter (P < 0.05). No significant differences between the two groups in extubation time, PACU stay duration, incidence of postoperative nausea and vomiting (PONV), or length of postoperative hospital stay (P > 0.05). Results indicate that intravenous lidocaine effectively improved POFS in patients undergoing laparoscopic radical resection of colorectal cancer, which might be achieved by inhibiting the postoperative inflammatory response and reducing postoperative pain.

Erector spinae plane block versus caudal epidural block in pediatric surgery: a systematic review and meta-analysis of randomized clinical trials

BACKGROUND

Caudal Epidural Block (CEB) is a well-established regional anesthesia technique for abdominal and sub-abdominal pediatric surgeries. However, it has a short duration, often leading to additional analgesic administration. Erector Spinae Plane Block (ESPB), for instance, is an emerging technique that, like CEB, provides analgesic effect to a specific dermatome of the body during surgery and in the postoperative period. Therefore, we performed this systematic review with meta-analysis to compare both techniques.

METHODS

We searched PubMed, Embase and Cochrane Central for Randomized Controlled Trials (RCTs) comparing ESPB versus CEB in pediatric patients undergoing abdominal and sub-abdominal surgeries. The primary outcome was the time to first analgesic request. Secondary outcomes were I) FLACC score; II) Postoperative nausea and vomiting, and III) Urinary retention.

RESULTS

Nine randomized controlled trials encompassing 507 patients were included in this analysis (1‒9). The patients were predominantly male and under 10 years of age. There was an equal distribution between the two groups regarding the number of patients and patients' baseline characteristics. The main results were: time to first analgesic request (MD = 3.71; 95% CI: -1.88-9.29; I2 = 99%; p = 0.19); FLACC scores at 2 hours (MD = 0.15; 95% CI: -0.30-0.59; I2 = 0%; p = 0.52); FLACC scores at 24 hours (MD = -0.17; 95% CI: -0.39-0.05; I2 = 41%; I2 = 41%; p = 0.13); urinary retention events (RR = 0.12; 95% CI: 0.02-0.94; I2 = 0%; p = 0.04); and Postoperative Nausea and Vomiting (PONV) which was null in both groups in three studies. However, it is important to clarify that some limitations were identified, such as significant heterogeneity in the following outcomes: time to first analgesic request and FLACC score at 24h, possibly due to different age groups, different types of surgeries, different background analgesia administration, and a relatively small sample size. As for the risk of bias, two studies were found to have some concerns in "bias due to deviations from intended interventions" (8,9).

CONCLUSION

Our findings suggest that the administration of ESPB did not statistically differ from CEB regarding the time to first analgesic request. FLACC scores also did not show a statistically significant difference between groups. The ESPB group, however, experienced minor urinary retention events compared to the CEB group.

QUALITY OF EVIDENCE

According to the GRADE assessment, all outcomes evaluated in this study were classified as high-quality evidence. Quality assessment is detailed in Supplementary Table 1.

Medication errors and adverse drug events in peri-operative pediatric anesthetic care over twenty years: a retrospective observational study

BACKGROUND

Children are at an increased risk of medication errors (MEs) during perioperative care compared to adult patients. This study aimed to critically look at medication errors and determine the frequency of adverse drug events and corrective measures taken for medication errors reported over 20 years in pediatric anesthetic care in the anesthesia department of a tertiary care teaching institution in a lower middle-income country (LMIC).

METHODS

Two investigators conducted a retrospective review of all critical incident forms received between January 2001 and December 2020 and identified medication errors related to patients aged 18 years or less. In the second phase of the audit, these medication errors were assessed in detail and adverse drug events were identified using a standardized protocol. We also analyzed the strategies that were employed to prevent such incidents in the future.

RESULTS

One hundred and ninety-six pediatric medication errors were identified. 40% of errors were reported in children between 13 and 72 months of age and 58% at induction. The majority of events took place during administration, preparation, and dispensing i.e., 45%, 41%, and 6% respectively. The adverse drug events occurred in 27 (1.2%) reports and life-threatening events in only one report.

CONCLUSION

13% of the medication errors progressed to adverse drug events (ADE) and half of those were serious and life-threatening. Reinforcement of standard practice in departmental critical incident meetings, patient safety workshops and lessons to learn e-mails were some low-cost strategies to enhance medication safety during anesthesia.

Dosing optimisation of intravenous lidocaine in patients with class 1-3 obesity by population pharmacokinetic analysis

INTRODUCTION

Evidence to support intra-operative lidocaine infusion regimens in patients with obesity is lacking, risking underdosing or toxicity. We aimed to measure the plasma concentrations of lidocaine and its active metabolites to develop a pharmacokinetic model and optimised dosing regimen in patients with obesity.

METHODS

A standardised weight-based intravenous lidocaine regimen was administered to patients with a BMI ≥ 30 kg.m-2 undergoing elective laparoscopic abdominal surgery. Using lean body weight, a 1.5 mg.kg-1 loading dose over 10 min and infusion of 1.5 mg.kg-1.h-1 was administered intra-operatively. Arterial blood was sampled during and after the infusion. The total and unbound plasma concentrations of lidocaine, monoethylglycinexylidide and glycinexylidide were measured using liquid chromatography-mass spectrometry. Monolix was used for population pharmacokinetic analysis. Dosing simulations were performed using Simulx to develop a regimen that best targeted a therapeutic plasma concentration between 2.5 and 5 μg.ml-1.

RESULTS

Thirty patients provided 221 plasma samples (median (IQR [range]) age 51 (44-61 [32-76]) y and 21 female). Median (IQR [range]) total body weight was 107.0 (91.8-132.5 [80.0-189.0]) kg and BMI was 37.7 (33.6-46.5 [30.2-58.4]) kg.m-2. Using total and unbound plasma concentrations of lidocaine, monoethylglycinexylidide and glycinexylidide, a four-compartment model was developed. Unbound lidocaine volume of distribution was 2.1 l.kg-1 and clearance 1.7 l.kg-1.h-1. Simulations showed that doses used currently had a low probability of target attainment of 0%. A loading dose of 2 mg.kg-1 over 20 min followed by an infusion of 3 mg.kg-1.h-1 based on lean body weight improved probability of target attainment to 18.6%. The infusion should be reduced to 2 mg.kg-1.h-1 after 80 min.

DISCUSSION

Our simulated dosing regimen achieved therapeutic concentrations more successfully in patients with obesity. Further studies should evaluate the clinical safety and efficacy of this dosing regimen.

Improving postoperative care for neurosurgical patients by a standardised protocol for urinary catheter placement: a multicentre before-and-after implementation study

INTRODUCTION

Urinary catheterisation, including indwelling and clean intermittent catheterisation, is common in perioperative and postoperative care. Despite guidelines, practice variation is significant. Inappropriate catheterisation risks include urinary tract infections and reduced mobility, leading to prolonged hospital stays and increased antibiotic use. This study aims to improve postoperative care through appropriate catheterisation in neurosurgical groups frequently subjected to catheterisation.

METHODS

We conducted a multicentre, before-and-after study in four Dutch hospitals from June 2021 to January 2023, including adult neurosurgical patients who underwent pituitary gland tumour or spinal fusion surgery. Exclusion criteria included conditions requiring chronic catheter use. A multifaceted strategy was implemented, focusing on a uniform protocol, an educational programme and department-specific champions. The primary outcome was inappropriate catheterisation, analysed with ordinal logistic regression. Secondary outcomes included total catheterisations, urinary tract infections and length of hospital stay. Ethical approval was obtained. Strengthening the Reporting of Observational Studies in Epidemiology and SQUIRE checklists were used.

RESULTS

Among 3439 patients screened, 2711 were included, with 544 in the after group. The percentage of patients without inappropriate indwelling catheterisation increased from 46% to 57%, and the proportion without inappropriate clean intermittent catheterisation rose from 34% to 67%. Additionally, overall catheter use decreased: the percentage of patients not receiving an indwelling catheter increased from 54% to 64%, while those not requiring clean intermittent catheterisation rose from 89% to 92%. Infection rates and hospital stay were similar (1.4% and 1.3%; 4.9 and 5.1 days, respectively).

CONCLUSIONS

Implementing a uniform protocol may significantly reduce inappropriate and overall catheterisation in neurosurgical patients, aligning with patient-centred, less invasive healthcare. Ongoing education and adherence to standardised protocols are crucial. Future research should assess the long-term sustainability of these strategies.

A nerve root decompression position identified by 3D CT scan: the modified reversed contralateral axial rotation position for patients with lumbar disc prolapse

BACKGROUND

Nerve root compression in the lumbar intervertebral foramen (LIVF) is a consistent feature of radicular syndrome. There is debate about movements and positions that may reduce compression for possible use in conservative treatment.

PURPOSE

To investigate real-time effects of specific 3 dimensional positioning of the trunk on the cross sectional area (CSA) of the LIVF in patients with lumbar disc prolapse and radiculopathy using 3D-CT scan imaging.

METHODS

Ninety males aged between 20 and 40 years with unilateral lumbar disc prolapse and radiculopathy were separated into three equal groups based on the level of disc prolapse. Group (A): L3/L4, group (B): L4/L5, and group (C): L5/S1. All underwent three separate imaging sessions; first in the supine position to establish baseline data (Baseline-Image 1), followed by a modified reversed contralateral axial rotation position (Image 2), and finally the same position as Image 2 but after 48 h of using the position as a therapeutic intervention (Image 3). The CSA of LIVF at L3/L4, L4/L5, and L5/S1 levels and the angles of straight leg raising (SLR) test were measured following each imaging session.

RESULTS

Two-way mixed MANOVA analysis revealed that the mean values of the CSA of LIVF and the angle of SLR test were significantly increased in Image 2 compared with Baseline-Image 1 across all tested groups (P = 0.001). Moreover, the measured outcome variables were significantly increased in Image 3 compared with Image 2 and Baseline-Image 1 across all tested groups (P = 0.001).

CONCLUSION

The modified reversed contralateral axial rotation position of the trunk had a real-time decompression effect on the impinged nerve roots in patients with unilateral lumbar disc prolapse and radiculopathy.

Healthcare professional's management of the risk for postoperative urinary retention in hip surgery patients - a qualitative interview study

BACKGROUND

Postoperative urine retention can lead to permanent bladder dysfunction. This occurs even though healthcare personnel can access evidence-based guidelines on avoiding urine bladder injuries related to care.

AIM

This study aimed to describe healthcare professionals' experiences with, and strategies to avoid post-operative urinary retention among hip surgery patients.

METHOD

A descriptive qualitative study using telephone interviews, were conducted in April to June 2021, with 22 healthcare professionals (13 nurses, 7 nursing assistants and 2 occupational therapists) in 17 orthopaedic wards in Sweden. Qualitative content analysis of interview data was performed.

RESULTS

Five categories were identified: "Knowledge about guidelines regarding bladder monitoring", "Understanding of patients' prehospital bladder function influences healthcare professionals' reasoning and actions", "Strategies are applied to make it easier for the patients to empty their bladder", "Indwelling catheter is used routinely" and "Short length of stay creates stress".

CONCLUSION

To optimise safe patient bladder monitoring after hip surgery, health care professionals need to be more aware of the availability of guidelines about bladder monitoring to adopt consistent monitoring practices, and to have enough time to care for patients.

Comparison of the postoperative analgesic efficacy of the ultrasound-guided erector spinae plane block and intrathecal morphine in patients undergoing total abdominal hysterectomy under general anesthesia: a randomized controlled trial

PURPOSE

Total abdominal hysterectomy (TAH) is a common surgical procedure. Erector spinae plane block (ESPB) and intrathecal morphine (ITM) provide adequate postoperative (PO) analgesia. However, ITM side effects may limit its use. Researchers investigated the efficacy of bilateral ultrasound-guided ESPB on PO pain and analgesic consumption compared to ITM in the first 24 h following TAH under general anesthesia.

METHODS

120 patients premedicated with 3 mg intravenous granisetron were randomized into three equal groups: bilateral ultrasound-guided ESPB, ITM or control group. The primary outcome of this study was the time to first request for a rescue analgesic (tramadol).

RESULTS

Compared to the control group, the ESPB and ITM groups showed higher time to first request for a rescue analgesic and lower total tramadol consumption 24 h following surgery (P < 0.001) with significant differences between the ESPB and ITM groups (P < 0.001). The ITM group showed lower pain scores and lower readings of both serum glucose and cortisol levels compared to the other two groups 24 h after surgery (P < 0.001). The ITM group also had higher incidences of nausea and pruritus 24 h after surgery (P < 0.001). The use of a single intrathecal injection of 0.3 mg morphine did not show any respiratory depression.

CONCLUSION

0.3 mg intrathecal morphine was superior to erector spinae plane block for postoperative pain relief, 24 h after surgery, regarding attenuated stress response, lower pain scores at rest and on coughing and lower tramadol consumption. IRB: IRB 00006379//31-1-2022.

TRIAL REGISTRATION NUMBER

ClinicalTrials.gov Identifier: NCT05218733.

Neuroimmune Pain and Its Manipulation by Pathogens

Recent studies highlight extensive crosstalk that exists between sensory neurons responsible for pain and the immune system. Cutaneous pain neurons detect harmful microbes, recruit immune cells, and produce anticipatory immunity in nearby tissues. These complementary systems generally protect hosts from infections. At the same time, neuroimmune pain is vulnerable to manipulation. Some pathogens evade immunity activated by nociceptors by producing opioid analogs and by interfering with sensory nerve function. Other organisms manipulate neuroimmune pain by increasing it. Hosts may gain protection from interference by adjusting pain sensitivity. Nociceptive sensitization follows expectations of signal detection theory and the smoke detector principle, allowing pain to be more easily triggered in response to microbial threats and damage. However, pain sensitization at the spinal level and cortical responses to pain are themselves the target of manipulation by parasites and other organisms. Here we review examples of parasites, bacteria, and other medically important organisms that interfere with pain signaling and describe their implications for public health, infectious disease, and the treatment of pain.

Intrathecal Morphine in Major Abdominal and Thoracic Surgery: Observational Study

Introduction: Optimal control of acute postoperative pain after major surgery accelerates the recovery process, shortens hospital stays, and minimizes healthcare costs. Intrathecal morphine is a simple, safe, and reliable regional technique that provides prolonged analgesia, useful in a wide variety of procedures. Materials and Methods: A retrospective observational study was conducted on patients who underwent various major abdominal or thoracic surgical procedures and were administered intrathecal morphine between January 2018 and December 2021. The primary objective was to establish the safety of the technique in terms of the incidence of early and late respiratory depression, atelectasis, the need for respiratory support, and the possible association of these complications with the presence of respiratory pathologies such as chronic obstructive pulmonary disease (COPD) or sleep apnea-hypopnea syndrome (SAHS) and obesity or smoking habit. Secondary objectives included recording the consumption of rescue intravenous (IV) morphine in the first postoperative 24 h, the incidence of PONV, and the incidence of late postoperative complications (at 90 days) such as pneumonia, readmission rates, and reoperation rates. Hospital stay and mortality were also recorded. Results: A total of 484 patients were included in the study. No patient experienced respiratory depression. Atelectasis occurred in 2.07% of patients. Respiratory support with non-invasive mechanical ventilation (NIMV) or high-flow oxygen therapy (HFOT) was required by 1.86% of patients. In total, 51% of patients required rescue IV morphine (average 6.98 mg), with a rate significantly higher in the thoracic and general surgery groups compared to urological surgery. The incidence of postoperative nausea and vomiting (PONV) was 30.37%. Regarding other secondary objectives, readmissions, reoperations, and mortality rates were significantly higher in patients undergoing urological and thoracic surgery compared to those undergoing general surgery. Conclusions: The administration of intrathecal morphine for the control of acute postoperative pain after major surgery can be considered as a safe technique that fits perfectly within the set of measures for a multimodal approach to pain management in major abdominal and thoracic surgery.

Efficacy and safety of intrathecal adjuvants for perioperative management of cesarean delivery: a systematic review and network meta-analysis of randomized controlled trials

BACKGROUND

Cesarean section (CS) rates have increased globally, necessitating effective anesthesia management. Single-shot spinal anesthesia has limitations due to its duration and the dose-limiting adverse effects of local anesthetics.

OBJECTIVES

To evaluate the effectiveness and safety of intrathecal adjuvants combined with local anesthetics in the perioperative management of CS pain.

DESIGN

Systematic review with network meta-analysis.

DATA SOURCES

PubMed, Cochrane Library for Clinical Trials, and Embase.

ELIGIBILITY CRITERIA

We included women undergoing CS under single-shot spinal anesthesia with any intrathecal drug or placebo added to a long-acting local anesthetic. We selected single- or double-blind, parallel-group, randomized controlled trials (RCTs) reported in English. We excluded crossover, non-randomized, up-and-down dose-finding studies and clinical trials comparing the same drugs in all study arms.

RESULTS

We included 166 RCTs with 14 925 patients assigned to 32 interventions. Buprenorphine and diamorphine were the highest-ranked treatments for reducing pain intensity at 24 hours, though not statistically significant. Morphine alone or in combination with meperidine, neostigmine, epinephrine, or nalbuphine significantly increased the duration of effective analgesia and reduced opioid consumption. Dexmedetomidine and morphine significantly prolonged the motor block duration. The safety profile of intrathecal adjuvants was generally adequate.

CONCLUSIONS

While the strength of evidence, overall, was very low to low, our study suggests that while none of the interventions significantly reduced pain intensity at 24 hours, several significantly prolonged effective analgesia and reduced postoperative opioid consumption. Dexmedetomidine and morphine prolonged the duration of motor block. None of the intrathecal adjuvants evaluated significantly increased the occurrence of severe adverse events. Future large-scale RCTs are essential to provide more robust evidence.

PROSPERO REGISTRATION NUMBER

CRD42024479424.

The Impact of Fentanyl and Morphine on Maternal Hemodynamics in Spinal Anesthesia for Cesarean Section

Background: Spinal anesthesia is considered the method of choice for elective cesarean sections; however, it is not without maternal-fetal risks. Materials and Methods: This study compared the effects on maternal hemodynamics of intrathecal administration of fentanyl or morphine in parturients undergoing spinal anesthesia with 0.5% hyperbaric bupivacaine, with doses varied between 7.5 and 11 mg, depending on the patient's height. Data from a cohort of 170 parturients were analyzed. The administered doses were intrathecal morphine at 0.1 mL (100 µg, solution of 1 mg/mL) or fentanyl at 0.25 mL (25 µg, solution of 50 µg/mL). This study included 80 patients in the fentanyl (F) group and 90 in the morphine (M) group. Results: Group F showed significantly higher post-intervention systolic blood pressure values than group M (95.30 ± 12.99 mmHg vs. 90.58 ± 14.75 mmHg, p = 0.032). The incidence of vomiting was significantly less frequent in group F compared to group M (1, 1.3% vs. 10, 11.1%, p = 0.011). The total dose of ephedrine required for hypotension correction was significantly lower in the F group (12.75 ± 13.26 mg vs. 17.72 ± 16.73 mg, p = 0.035). Conclusions: The addition of fentanyl as an adjuvant alongside the local anesthetic in cesarean section is associated with enhanced hemodynamic stability compared to morphine, requiring lower doses of ephedrine and contributing to increased patient safety during elective cesarean surgery.

Randomized, Single-Blind Comparison of Two Different Flow Rates of Sevoflurane Anesthesia on Acute Kidney Injury

BACKGROUND

Prolonged sevoflurane-based low-flow anaesthesia (LFA) is often not advised for clinical use due to acute kidney injury (AKI) risk. However, LFA has multitudes of advantages, and surveys on anesthesia practice indicate that the use of LFA, even with sevoflurane, is on the rise. Literature on human studies is growing, but the recommendations for LFA have not changed, indicating the need for further evaluation. We aimed to evaluate the incidence of AKI with sevoflurane-based LFA with two different FGFs.

METHODS

The current prospective, randomized, single-blind, parallel-arm study was conducted using sevoflurane-based LFA with two FGFs: group A (1000mL/min) and group B (600mL/min) with a targeted age-adjusted minimum alveolar concentration (MACage) of 1-1.2 enrolling adult participants undergoing elective surgeries of at least 120-minute anesthesia duration. Anesthesia management was standardized, and AKI classification was performed based on Kidney Disease: Improving Global Outcomes (KDIGO) guidelines. Further, spot urinary microalbumin, sodium (Na), potassium (K), protein, and spot albumin creatinine ratio (sACR) were evaluated and compared. A two-tailed p-value <0.05 was considered statistically significant.

RESULTS

Data from 65 (33 in the 1000mL and 32 in the 600mL group) were evaluated. No AKI was noted in either group. The anesthesia duration ranged from 120 to 780 minutes (median 200, interquartile range 260-180, with mean 230.9, and 95% confidence 202.5-259.3 minutes). Spot urine microalbumin was significantly higher at two to four hours postoperatively than at the preoperative level, but the rise was similar in both groups. By 24 hours, the level declined significantly and remained at a slightly higher level than the preoperative value, which further reduced to a somewhat lower level than the preoperative value by 48 hours. Only one patient in the 1000mL/min group had sACR >66.7 μg/mg.

CONCLUSION

Sevoflurane-based LFA with an FGF of 600mL/min is safe and comparable to the FGF of 1000mL/min for surgeries. Transient urinary microalbumin and sACR changes occur, which settle within 24 to 48 hours; no impact on urine output and AKI was noted.

Intrathecal Morphine for Postoperative Analgesia: Balance of Efficacy and Safety

Intrathecal morphine (ITM) has been a reliable technique for postoperative pain management since 1979. As a key component of multimodal analgesia, ITM provides long-lasting pain relief. ITM's simplicity, lack of need for expensive equipment, and minimal training requirements contribute to its wide use. In this article, we highlight the current state of affairs in terms of ITM for postoperative analgesia, including aspects that are still under debate. In particular, we emphasize the doses that are efficacious while minimizing the risk of respiratory depression. Further, we believe that when used in low doses (<200 mcg) and without the administration of potential augmenting medications, intrathecal morphine does not pose a greater risk of respiratory depression than systemic opioid therapies commonly used in routine clinical practice. We particularly emphasize that standard nursing care is sufficient for postanesthesia monitoring of patients in such cases.

Tailoring anaesthetic strategies for diabetes research: Acepromazine vs. medetomidine in Aachen minipigs

Pre-established anaesthetic protocols in animal models might unexpectedly interfere with the main outcome of scientific projects and therefore they need to account for the specific research goals. We aimed to optimize the anaesthetic protocol and animal handling strategies in a diabetes-related-study exemplifying how the anaesthetic approach must be adjusted for individual research targets. Aachen minipigs were used as a model to test long-lasting skin glucose sensors for diabetic human patients. A total of 6 animals participated in two or three rounds of experiments. Each round lasted 2 months, with a maximum of 2 rounds per year. In each round, animals were anaesthetised 4 times: for glucose sensors insertion, twice for glucagon stress tests (GST), and a last time for removal of sensors. Acepromazine (ACE) was compared to medetomidine (MED) in association with butorphanol (BUT) and Ketamine (KET) and 4 parameters were analysed to define the optimum anaesthetic protocol including: sedation level, anaesthesia duration, effects on blood glucose and safety. ACE-BUT demonstrated a weaker sedative effect but reduced overall experimental time, minimized anaesthetic risk and minimally interfered with the glucose metabolism. The improvement obtained by animal conditioning and handling strategies applied in this study were not objectively estimated, although the aversion behavior was completely abolished. Based on the analysed parameters, the use of acepromazine is proposed to be superior when Aachen Minipigs are used specifically as a model for diabetes-related studies, albeit the recommendations for the anaesthesia of minipigs suggest otherwise.

Intravenous Lidocaine for Gut Function Recovery in Colonic Surgery: A Randomized Clinical Trial

Importance

Despite the recovery advantages of minimally invasive surgical techniques, delayed return of gut function after colectomy is a common barrier to timely discharge from hospital.

Objective

To evaluate the effect of 2% perioperative intravenous lidocaine infusion on return of gut function after elective minimally invasive colon resection.

Design, Setting, and Participants

The ALLEGRO trial was a randomized, placebo-controlled, double-blind trial conducted in 27 UK hospitals. A total of 590 adults scheduled for elective minimally invasive colon resection for benign or malignant disease were randomized 1:1 to 2% intravenous lidocaine or saline placebo. Enrollment occurred from August 13, 2018, to April 11, 2023, with a pause in recruitment from March 20, 2020, through July 6, 2020; final follow-up was on August 10, 2023.

Interventions

The intervention patients received 2% intravenous lidocaine administered as 1.5-mg/kg bolus at induction of anesthesia followed by 1.5 mg/kg/h for 6 or 12 hours. Control patients received 0.9% saline placebo for 6 or 12 hours.

Main Outcomes and Measures

The primary outcome was the proportion of patients with return of gut function at 72 hours after surgery, defined by the GI-3 composite end point of tolerating diet (ingestion of food and drink without significant nausea or vomiting for 3 consecutive meals) and passage of flatus or stool. There were 11 secondary outcomes, including time to GI-3 recovery, time to GI-2 recovery (tolerance of oral diet and passage of stool), prolonged postoperative ileus, postoperative nausea and vomiting score, Overall Benefit of Analgesia Score, postoperative opioid consumption, Quality of Recovery-15, quality of life (EuroQol 5-Dimension 5-Level), enhanced recovery protocol adherence, time to meeting medically defined criteria for discharge, and time to patient self-assessed readiness for discharge.

Results

The trial enrolled 590 patients (295 intervention, 295 control); after 33 postrandomization exclusions, 557 patients were included (279 intervention, 278 control; 249 female patients [44.7%]; mean [SD] age, 66 [10.9] years); 532 (96%) received the randomized treatment. Return of gut function as defined by the GI-3 composite outcome was achieved at 72 hours by 160 patients (57.3%) in the intravenous lidocaine group vs 164 patients (59.0%) in the placebo group (adjusted absolute difference, -1.9% [95% CI, -8.0% to 4.2%]; relative risk, 0.97 [95% CI, 0.88 to 1.07]). There was no significant difference between the intervention and control groups in any of the 11 secondary end points.

Conclusions and Relevance

Among patients undergoing elective minimally invasive colon resection, perioperative administration of 2% intravenous lidocaine did not improve return of gut function at 72 hours.

Trial Registration

isrctn.org Identifier: ISRCTN52352431.

Barriers and Solutions in Implementing Evidence-Based Recommendations to Prevent Intraoperative Inadvertent Hypothermia: A Qualitative Study

In this study, it was aimed to understand the barriers and solutions for operating room (OR) nurses and anesthesiologists to implement evidence-based recommendations to prevent intraoperative inadvertent hypothermia (IIH). A qualitative, inductive, and descriptive study was conducted. This qualitative interview study was conducted face-to-face with 19 participants working in OR units between February and March 2023. The interviews were analyzed using qualitative content analysis. The COREQ checklist was followed. Two main themes and five sub-themes were identified as a result of content analysis. According to the participants, barriers to IIH prevention interventions are caused by individual and organizational inefficiencies and personal opinions, and the main solution is education. Participants reported many factors that hinder IIH prevention practices. The individual characteristics of OR staff and the opinions and behavior of the institution are very important for IIH prevention.

Nurses' Awareness and Practices of Unintentional Perioperative Hypothermia Prevention: A Cross-Sectional Study

Unintentional perioperative hypothermia can cause potentially life-threatening complications. The aim of this study was to determine the awareness and practices of nurses regarding unintentional perioperative hypothermia prevention. The study was conducted at a teaching hospital in Gambia with descriptive cross-sectional design. A total of 53 nurses voluntarily participated in this study. The questionnaire used in this study was developed based on the American periOperative Registered Nurses (AORN) and National Institute for Health and Care Excellence perioperative hypothermia guidelines. Descriptive statistics, Pearson correlation, Student t-test, and one-way ANOVA were used in the analysis of data. The result of the study showed that nurses had high level of awareness of unintentional perioperative hypothermia prevention; however, practice levels were found to be low. Based on the results of the study, development of policies, implementation of the unintentional perioperative hypothermia prevention guidelines, and continuous education to improve nurses' knowledge and practices were recommended.

Correlation Between Magnetic Resonance Imaging Findings and Advanced Practice Physiotherapists' Assessment Findings in Diagnosing Lumbosacral Radiculopathy, and the Impact of Imaging Findings on Treatment Plans: A Retrospective Clinical Audit

BACKGROUND

Magnetic Resonance Imaging (MRI) is increasingly used by Advanced Practice Physiotherapists (APPs) to confirm the diagnosis of lumbosacral radiculopathy (LSR) and to exclude other spinal pathologies. There is evidence of correlation between Advanced Practice Physiotherapists' diagnosis of lumbosacral radiculopathy and positive MRI findings, but there is limited evidence regarding the correlation between the full physiotherapy assessment and MRI findings. There are also conflicting evidence regarding the effect of MRI findings on treatment planning post-imaging.

AIMS

This study aims to examine the extent to which Advanced Practice Physiotherapists' diagnoses of lumbosacral radiculopathy correlate with those made after MRI, and to examine Advanced Practice Physiotherapists use of the local MRI referral pathway with respect to treatment plans, including testing correlation between pre-and post-MRI treatment plans.

METHODS

A cross-sectional, multi-centre, retrospective audit was conducted on 482 patients (276 female, 206 male) referred for lumbosacral MRI between January 2018 and December 2019. Non-linear regression analysis was performed to examine the relationships between diagnosis and treatment plans in LSR before and after MRI.

RESULTS

The results show a significant positive correlation (p < 0.001; R = 0.196) between pre- and post-MRI diagnoses of lumbosacral radiculopathy. There was a significant positive correlation between pre- and post-MRI treatment plans for LSR (p = 0.001; R = 0.159). On comparison of pre- and post-MRI diagnoses of LSR, there is a weak positive correlation with high statistical significance (p < 0.001; R = 0.196). Reliability, tested using the intraclass correlation coefficient (ICC) across the four categories, was (p = 0.041; R = 0.033). This shows a weak positive correlation with statistical significance.

CONCLUSIONS

Advanced Practice Physiotherapists can confidently diagnose and treat lumbosacral radiculopathy following initial assessment, although a minority of referrals lack a clear or appropriate treatment plan.

Effects of Active Heating Methods on Body Temperature, Shivering, Thermal Comfort, Pain, Nausea and Vomiting During General Anesthesia: A Randomized Controlled Trial

To investigate the effect of forced-air warming and heated intravenous (IV) and irrigation fluids alone and in combination on body temperature, shivering, thermal comfort, pain, nausea and vomiting in adult patients undergoing surgery under general anesthesia in a prospective, four-group, randomized controlled trial. After induction of anesthesia, 120 patients were divided into the following groups: patients warmed with forced-air warming (n = 30), patients receiving warmed IV and irrigation fluid (n = 30), patients receiving warmed IV and irrigation fluid with forced-air warming (n = 30), and the control group without any intervention (n = 30). Body temperature, shivering, thermal comfort, pain, nausea and vomiting were monitored in the first 24 hours after surgery. The general characteristics of the groups, mean body temperature, length of stay, ambient temperature, and duration of surgery in the preoperative waiting unit were similar (p > 0.05). Compared with the other groups, patients in the control group had a significant decrease in body temperature from the 30th minute during surgery (p < 0.001), lower body temperature in the first 2 hours and thermal comfort in the first three hours after surgery (p < 0.01), and higher shivering levels in the first hour after surgery (p < 0.01). There was no significant difference between the groups in terms of postoperative pain, nausea and vomiting (p > 0.05). The study findings showed that normothermia was maintained in all three intervention groups during the surgery and in the first 24 hours after surgery. Moreover, postoperative thermal comfort increased and shivering levels decreased compared with the control group, but pain, nausea and vomiting levels were not affected. The study was registered on ClinicalTrials.gov (NCT04907617).

Conflicts of Interest Anesthesia Practice: Relationships with Industry, Responsibility to the Health Care System, and Research Integrity

Conflicts of interest (COIs) between clinical obligations and other roles and responsibilities occur throughout health care, including anesthetic practice. In some circumstances, these conflicts are unavoidable. This article describes some of the potential conflicts and explores approaches to managing them in 3 key areas: relationships with industry, responsibility to the health care system, and obligations in research. Although working with industry has many benefits, COIs may arise from financial arrangements, potential biases that may go unrecognized, prioritization of commercial interests and even guideline development.

Spinal anesthesia in ambulatory patients

PURPOSE OF REVIEW

To assess current practice in the use of spinal anesthesia in major ambulatory surgery, highlighting its advantages over general anesthesia and identifying potential areas for improvement to facilitate a transition to a sustainable healthcare system.

RECENT FINDINGS

Spinal anesthesia might be preferred in selected populations when compared to general anesthesia providing the highest standards of healthcare quality.The use of local anesthetics with short half-life has proven to be efficient in achieving high anesthesia success rates. Spinal anesthesia does not increase perioperative complications; instead, it has shown a reduction in postoperative nausea and vomiting, an improvement in patient comfort, and a favorable economic impact when compared to general anesthesia.

SUMMARY

Spinal anesthesia is an appropriate method for anesthesia in ambulatory patients, offering advantages over general anesthesia in selected populations.The use of spinal anesthesia is expanding to meet surgical needs. Therefore, it is crucial to plan ahead and anticipate organizational failures in the ambulatory setting to maintain safety and efficiency during outpatient procedures and surgeries.

Evaluation of the analgesic efficacy of a low dose of intrathecal morphine in laparoscopic abdominal surgery: A randomised control trial

INTRODUCTION

Intrathecal opioid is an analgesic option in laparoscopic surgery. We assessed primarily the intraoperative opioid requirement amongst patients receiving intrathecal morphine (ITM) (Group M) versus standard care (Group C) for abdominal surgery. The secondary outcomes were intraoperative haemodynamic changes, extubation on table and pain scores in the intensive care unit (ICU) at 6 th hourly intervals for 24 h postoperatively.

PATIENTS AND METHODS

Patients undergoing laparoscopic abdominal surgery were randomised into Group M ( n = 30) that received ITM at 2 μg/kg while Group C ( n = 30) was control. A rise in mean arterial pressure > 20% from baseline was treated sequentially with 0.3 mg /kg propofol and 0.5 μg/kg fentanyl intravenously (IV). Pain management in the ICU included paracetamol 1G IV 8 th hourly for all patients, while nefopam 20 mg and fentanyl 0.5 μg/kg IV were the second and third tiers of pain management.

RESULTS

Intraoperatively, 10 patients in Group M versus 26 in Group C needed additional fentanyl ( P < 0.001) and 15 versus 26 patients needed additional propofol ( P = 0.0024). Pain scores were superior in Group M at all time points in the ICU and at ambulation and during incentive spirometry. Thirteen patients in Group C versus 3 in Group M needed nefopam at the time of shifting to the ICU ( P = 0.004) and 10 patients versus 1 at 8 h in the ICU ( P = 0.003) while pain management at 16 h and 24 h was comparable.

CONCLUSION

Pre-operative ITM at 2 μg/kg reduces intraoperative opioid requirement and improves analgesia 24 h postoperatively amongst patients undergoing major laparoscopic abdominal surgery without delay in extubation or changes in haemodynamics.

Making Sense of Topical Pain Relief Options: Comparing Topical Analgesics in Efficacy and Safety

CONTEXT

In patients with musculoskeletal (MSK) conditions, pain is the leading contributor to disability and significantly limits mobility and dexterity. This narrative review describes the efficacy and safety of topical analgesics in common use today.

EVIDENCE ACQUISITION

Secondary literature gained via a literature search using PubMed.gov and the Cochrane library were used.

STUDY DESIGN

Recent literature (2000-2023) on several major classes of topical analgesics and topical delivery systems were reviewed to provide strength of recommendation taxonomy (SORT) levels. A total of 86 articles were reviewed.

LEVEL OF EVIDENCE

Level 2.

RESULTS

Topical nonsteroidal anti-inflammatory drugs (NSAIDs) and cabbage leaf wraps (CLW) appear to be best suited for multiple types of acute MSK pain, and topical nitroglycerin is helpful when used specifically for rotator cuff pain in patients seeking relief while performing activities of daily living and willing to treat for long periods of time. For compounded topical formulations, it may be better to offer single agent creams based on patient preferences. Little data support the use of cryotherapy. Traumeel could be a promising natural analgesic that compares with diclofenac. Topical lidocaine appears best suited for postherpetic neuropathic pain. O24 is a reasonable alternative with a low risk profile to treat pain in patients with fibromyalgia syndrome.

CONCLUSION

Choice of topical agents should be guided by current evidence accounting for type of pain, medication side effects, patient comorbidities, as well as patient preference, convenience, and cost.

STRENGTH-OF-RECOMMENDATION TAXONOMY (SORT)

Of the topical analgesics and modalities reviewed, SORT level A evidence was found for topical NSAID use in decreasing MSK pain, topical lidocaine for postherpetic neuralgia, and nitroglycerin patches for treating rotator cuff pain if used for prolonged periods of time. Alternative treatments such as CLW and Traumeel show promising results (SORT level B).

Agreement between three noninvasive temperature monitoring devices during spinal anaesthesia for caesarean delivery: a prospective observational study

Hypothermia during obstetric spinal anaesthesia is a common and important problem, yet temperature monitoring is often not performed due to the lack of a suitable, cost-effective monitor. This study aimed to compare a noninvasive core temperature monitor with two readily available peripheral temperature monitors during obstetric spinal anaesthesia. We undertook a prospective observational study including elective and emergency caesarean deliveries, to determine the agreement between affordable reusable surface temperature monitors (Welch Allyn SureTemp® Plus oral thermometer and the Braun 3-in-1 No Touch infrared thermometer) and the Dräger T-core© (using dual-sensor heat flux technology), in detecting thermoregulatory changes during obstetric spinal anaesthesia. Predetermined clinically relevant limits of agreement (LOA) were set at ± 0.5 °C. We included 166 patients in our analysis. Hypothermia (heat flux temperature < 36 °C) occurred in 67% (95% CI 49 to 78%). There was poor agreement between devices. In the Bland-Altman analysis, LOA for the heat flux monitor vs. oral thermometer were 1.8 °C (CI 1.7 to 2.0 °C; bias 0.5 °C), for heat flux monitor vs. infrared thermometer LOA were 2.3 °C (CI 2.1 to 2.4 °C; bias 0.4 °C) and for infrared vs. oral thermometer, LOA were 2.0 °C (CI 1.9 to 2.2 °C; bias 0.1 °C). Error grid analysis highlighted a large amount of clinical disagreement between methods. While monitoring of core temperature during obstetric spinal anaesthesia is clinically important, agreement between monitors was below clinically acceptable limits. Future research with gold-standard temperature monitors and exploration of causes of sensor divergence is needed.

Comparison of hemodynamic responses to nasal intubation in cancer patients receiving opioid-free general anesthesia versus standard regimen

Background and Aims

Nasotracheal intubation evokes greater hemodynamic responses than oral intubation. We compared the heart rate (HR) and mean arterial pressure (MAP) responses following nasal intubation during opioid-free anesthesia (OFA) using intravenous lignocaine versus standard regimen using morphine in cancer patients undergoing tumor resection.

Material and Methods

This randomized, double-blinded study was conducted in 84 adults. Group A received lidocaine bolus 1.5 mg/kg over 10 min followed by infusion of 1 mg/kg/h. Group B received morphine 0.2mg/kg bolus over 10 min followed by infusion of 2mg/h. Protocols for induction and intubation were similar.

Results

Mean HR and MAP at preinduction, immediately after induction, and at 1, 3, and 5 min after intubation were comparable in groups A and B. Intragroup comparison of preinduction HR with subsequent values in group A showed that the HR values at 1,3, and 5 min after intubation were significantly higher than the preinduction value. HR after induction was comparable. Intragroup analysis in group B showed that preinduction HR was comparable with HR after induction and at 3 and 5 min after intubation. HR at 1 min was significantly higher. Intragroup analysis in group A showed that the MAP values were significantly lower than the preinduction value after induction and at 1,3, and 5 min after intubation. In group B, MAP was significantly lower than the preinduction value after induction and at 3 and 5 min after intubation, with the value being comparable at 1 min.

Conclusion

OFA with lignocaine bolus followed by infusion, as well as morphine did not attenuate the HR responses to nasal intubation in cancer patients. However, both techniques effectively blunted the MAP response.

Description and management of patients with anal fissure: insights on Italian primary care setting coming from real-world data

To describe patients with anal fissure (AF) and their management in primary care. Retrospective study using the Italian Longitudinal Patient Database on 18 + years old subjects with AF records during 'July 2016-June 2021' (selection period). Index Date (ID) was the first AF record during selection period. Sub-cohorts were defined by presence/absence of prescriptions on ID of the combination of topical nifedipine 0.3% and lidocaine 1.5% (NIF/LID). Patients' information on the 12-month period before (baseline) and after (follow-up) ID was analyzed. Subjects with AF were 8632: 14.0% had NIF/LID on ID. Mean age was 52 (± 17.2) years, there were more women in ' < 50 years' group, and more men in '50-70' one. Prevalences of pregnancy and immunodepression were around 5%; most common comorbidities were hypertension (29.6%) and heart disease (13.1%), while constipation and diarrhea were < 5%. Healthcare resources utilization (HRUs) increased during follow-up, but still few patients were prescribed NIF/LID (2.8%), other treatments for AF (10.3%), or proctological visits (7.7%). NIF/LID patients were younger (< 40 years people: 30.7% versus 23.9%; p value < 0.0001), and more likely to have constipation (4.3% versus 2.5%; p value < 0.001); patients without NIF/LID showed slightly higher prevalences of hypertension (30.0% versus 27.1%; p value: 0.039) and depression (4.0% versus**2.5%; p value: 0.009), and a little higher overall HRUs. Results show that general practitioners are used to manage AF. However, there is still a gap between guidelines' recommendations and actual management. Educational campaigns on common anal problems in primary care might help further improving AF management and optimizing HRUs.

The role of intravenous lidocaine infusion in enhanced recovery after laparoscopic renal surgeries: A randomized control trial

Background and Aims

Enhanced recovery after surgery (ERAS) has been applied in various laparoscopic procedures. Intravenous lidocaine (IVL) infusion is used for laparoscopic procedures as a part of ERAS protocols. The study aimed to evaluate the role of IVL infusion in enhanced bowel recovery after laparoscopic renal surgeries.

Material and Methods

A randomized, double-blind, placebo-control trial was conducted on 80 patients (with American Society of Anesthesiologists physical status I-II) who presented for laparoscopic renal surgeries under general anesthesia. The study period was from Oct 2018 to Sept 2019. By computer-generated codes, patients were randomly divided into two groups: L (lidocaine) and C (control). Group L received an intravenous (IV) bolus (1.5 mg/kg) of 2% lidocaine over 2 min, followed by an IV lidocaine infusion at the rate of 1.5 mg/kg/h until skin closure. Group C received the same volume of bolus followed by normal saline infusion. Patients were monitored for bowel functions, total hospital stay, and total analgesic consumption. Student's t-test and Chi-square test were used for quantitative data and occurrence of events, respectively. P <0.05 was considered to be statistically significant.

Results

First bowel sound, flatus, and defecation occurred in 16.4 ± 2.50, 26.7 ± 9.02, and 39.1 ± 6.31 h, respectively, in group L and 18.2 ± 2.90, 32.3 ± 3.11, and 43.3 ± 4.22 h, respectively, in group C (P = 0.006, 0.001, and 0.01, respectively). Total hospital stay was 4.0 ± 0.74 and 5.3±0.0.91 days in groups L and C, respectively (P < 0.001).

Conclusion

The present study concluded that IVL could enhance the bowel recovery and reduce total hospital stay after laparoscopic renal surgeries.

Serum brain-derived neurotrophic factor level in patients with disc induced lumbosacral radiculopathy: Relation to pain severity and functional disability

BACKGROUND

Pain is the major cause of disability in disc induced lumbosacral radiculopathy (LSR) and is related to neurotrophins mainly brain derived neurotrophic factor (BDNF). However, to our knowledge evaluating serum BDNF in disc induced LSR has not been reported before. This study was done to investigate serum BDNF in LSR patients and its relation to pain severity and functional disability.

METHODS

This case-control study included 40 disc induced LSR patients and 40 age and sex matched healthy subjects. All patients were subjected to neurological examination, electrophysiological evaluation, pain severity assessment using numerical rating scale (NRS) and functional disability assessment using Modified Oswestry Low Back Pain Disability Index (ODI) and Maine-Seattle Back Questionnaire (MSBQ). According to Douleur neuropathique 4 (DN4) questionnaire, patients were divided into those with neuropathic pain and those with non-neuropathic pain. Serum BDNF was measured by enzyme-linked immunosorbent assay in all participants.

RESULTS

Serum BDNF was significantly higher in LSR patients than in healthy controls (U=272.5, P<0.001). Moreover, serum BDNF was significantly higher in those with neuropathic pain compared to those with non-neuropathic pain (U=35, P=0.03). Serum BDNF had a significant positive correlation with NRS score among those with acute pain (rs=0.537, P=0.026), however there was no significant correlation among those with chronic pain. Furthermore, BDNF had no significant correlation with modified ODI and MSBQ.

CONCLUSION

Increased serum BDNF may be associated with neuropathic pain and acute pain severity in disc induced LSR. However, it may not be related to chronic pain severity or functional disability.

Efficacy of Percutaneous Laser Disc Decompression (PLDD) Combined with an Oral Food Supplement for Lumbar Disc Herniation

Background: In recent years, minimally invasive treatment options for lumbar disc herniation, such as percutaneous laser disc decompression (PLDD), have been introduced to avoid more invasive surgical methods. Combining these minimally invasive approaches with nutraceuticals that are effective in neuroprotection and pain management may lead to better long-term outcomes. Methods: The present study evaluated the beneficial effects of a new oral food supplement composed of acetyl-L-carnitine, α-lipoic acid, quercetin, bromelain, pantothenic acid, and vitamins C, B1, B2, B6, and B12 in patients with neuropathic pain due to herniated lumbar discs treated with PLDD. Patients were divided into two groups of 26 patients each: group A underwent PLDD alone, while group B underwent PLDD followed by a dietary supplement for two months after surgery. Preoperative VAS scores for leg pain were recorded for both groups and no significant difference was observed (8.7 for Group A and 8.6 for Group B). Results: In Group A, the mean postoperative VAS score for leg pain at a 1-month follow-up was 2.5, which remained stable at 3 months. In Group B, the mean postoperative VAS score was 2.0 at 1-month and improved to 1.6 at the 3-month follow-up. According to self-reported leg pain assessments, 66.5% of the patients using the dietary supplement reported a significantly better pain condition, and 43.5% reported a somewhat better situation. In contrast, 7.7% of the patients who underwent PLDD alone reported no changes in leg pain at the final follow-up. Conclusions: The results of our study indicate that the oral food supplement could provide a safe and effective treatment in patients with painful radiculopathy, enhancing the recovery of sensory fiber function in lumbar nerve roots after surgical lumbar disc decompression.

Effectiveness of low-level laser therapy in reducing pain score and healing time of recurrent aphthous stomatitis: a systematic review and meta-analysis

BACKGROUND

Recurrent aphthous stomatitis (RAS) is a common chronic inflammatory oral disease that negatively impacts the quality of life. Current therapies aim to reduce pain and healing process yet challenges such as rapid loss due to salivary flushing in topical drugs and adverse effects due to prolonged use of systemic medications require further notice. Low-level laser therapy is reported with immediate pain relief and faster healing thus preserving the potential for optimal treatment modalities. This review critically analyses and summarizes the effectiveness of LLLT in reducing pain scores and healing time of RAS.

METHODS

A systematic search was conducted in ScienceDirect, PubMed, and Scopus using keywords of low-level laser therapy, photo-biomodulation therapy, and recurrent aphthous stomatitis. RCTs between 1967 to June 2022, presenting characteristics of the laser and reporting pain score and/or healing time of RAS after irradiation were included. Animal studies and recurrent aphthous ulcers with a history of systemic conditions were excluded. Studies were critically appraised using the RoB 2 tool. A meta-analysis was performed using inverse variance random effects.

RESULTS

Fourteen trials with a total of 664 patients were included. Reduced pain was reported in 13 studies, while shortened healing time was presented in 4. The pooling of two studies after CO2 irradiation demonstrated faster healing time compared to placebo (MD - 3.72; 95% CI - 4.18, - 3.25).

CONCLUSION

Pain score and healing time of RAS were reduced after irradiation with LLLT. RoB resulted in "some concerns" urging well-designed RCTs with larger samples to further assess each laser application for comparison.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42022355737.

Evaluation of effects of intravenous infusion of dexmedetomidine or lignocaine on stress response and postoperative pain in patients undergoing craniotomy for intracranial tumors: A randomized controlled exploratory study

Background

Goals of anesthesia in neurosurgery include stable cerebral hemodynamics and provide relaxed brain to surgeon. Dexmedetomidine and lignocaine as an adjuvant can fulfill these criteria but literature comparing the two are sparse. We compared the effects of intravenous infusion of dexmedetomidine or lignocaine on stress response, postoperative pain, and recovery in patients undergoing craniotomy for intracranial tumors.

Methods

Approval was obtained from IEC, and the study was prospectively registered (CTRI/2022/11/047434). Written and informed consent was obtained from 105 patients fulfilling inclusion criteria, and they were divided into three groups. Group D received intravenous infusion of dexmedetomidine 1 mcg/kg over 15 minutes followed by infusion at rate of 0.5 mcg/kg/h, Group L received intravenous infusion of lignocaine 2 mg/kg over 15 minutes followed by infusion at rate of 1.5 mg/kg/h, and Group N received intravenous infusion of normal saline at the rate of 4-8 ml/h till skin suturing. SPSS v23 (IBM Corp.) was used for data analysis.

Results

There was a significant difference between groups in terms of intraoperative hemodynamic variations, brain relaxation score, extubation criteria, postoperative pain, stress indicator response, and quality of recovery.

Conclusions

Dexmedetomidine as an adjuvant to anesthetic drugs has a better profile than lignocaine in suppressing stress response and preventing hemodynamic variations at intubation, skull pin application, and surgical incision. Dexmedetomidine increases the duration of effective analgesia more than lignocaine, in postoperative period in patients undergoing craniotomy.

Comparison of Spinal Morphine and Transversus Abdominis Plane Block on Opioid Requirements After Caesarean Section: An Observational Study

Objective

Acute postoperative pain is one of the major clinical problems that occurs in patients undergoing cesarean section with a prevalence of 89.8%. Postoperative pain causes discomfort and various complications for the mother. In addition, postoperative pain that is not handled properly can increase the risk of becoming chronic pain by 2.5 times. One of the methods recommended in the Enhanced Recovery After Caesarean Section (ERACS) protocol to prevent acute postoperative pain is the use of intrathecal long-acting opioids, with intrathecal morphine as the gold standard and Transversus Abdominis Plane (TAP) block. This study aims to assess the comparison of opioid needs as analgesic rescue between the administration of 0.1mg spinal morphine and TAP block with bupivacaine 0.2% 10mg in patients undergoing cesarean section.

Methods

This study is an observational study in a single Tertiary Hospital in West Java - Indonesia. Patients were given patient-controlled anesthesia (PCA) with fentanyl as analgesic rescue. Statistical analysis of the numerical data used the unpaired t-test and Chi-Square test for categorical data.

Results

In the group that was given spinal morphine, the duration of additional opioids was longer (p < 0.05), and the total dose of additional opioids was less than the TAP block group (p < 0.05).

Conclusion

The spinal morphine requires fewer additional opioids than the TAP block.

Adherence to evidence-based guidelines for prevention of urinary retention in hip surgery patients: a multicentre observational study

Urinary retention is a healthcare complication putting patients at risk of unnecessary suffering and harm. Orthopaedic patients are known to face an increased such risk, calling for evidence-based preoperative assessment and corresponding measures to prevent bladder problems. The aim of this study was to evaluate healthcare professionals' adherence to risk assessment guidelines for urinary retention in hip surgery patients. This was an observational study from January 2021 to April 2021 with a descriptive and comparative design, triangulating three data sources: (I) Medical records for 1382 hip surgery patients across 17 hospitals in Sweden were reviewed for preoperative risk assessments for urinary retention and voiding-related variables at discharge; (II) The patients completed a survey regarding postoperative lower urinary tract symptoms, and; (III) data were extracted from a national quality registry regarding type of surgery, preoperative physical status, and perioperative urinary complications. Group differences were analysed with Chi-square/Fisher's exact test, t-test, Wilcoxon rank-sum test, or Mann-Whitney U-test. Logistic regression was used to analyse variables associated with completed risk assessments for urinary retention. Of all study participants, 23.4% (n = 323) had a preoperative documented risk assessment of urinary retention. Whether a risk assessment was performed was significantly associated with acute surgery [odds ratio (OR) 3.56, 95% confidence interval (CI) 2.48-5.12] and undergoing surgery at an academic hospital (OR 4.59, 95% CI 2.68-7.85). Acute patients were more often affected by urinary retention and had bladder issues and/or an indwelling catheter at discharge. More than every tenth patient (11. 9%, n = 53) completing the survey experienced intensified bladder problems after their hip surgery. The study shows a lack of adherence to risk assessment for urinary retention according to evidence-based guidelines, which negatively affects quality of care and patient safety.

Massive lignocaine overdose while on veno-arterial extracorporeal membrane oxygenation (VA ECMO)

We present the extraordinary circumstance of a female patient in her sixties who suffered a massive lignocaine overdose while undergoing treatment with Veno-Arterial Extracorporeal Membrane Oxygenation (VA ECMO) following an emergency coronary artery bypass graft (CABG). The patient was initially admitted to the Intensive Care Unit (ICU) due to unstable angina and a history of insulin-dependent type two diabetes mellitus, hypertension, hypercholesterolemia, carotid artery stenosis, and an extensive smoking history. Despite initial improvements following surgery, she experienced repeated episodes of nonsustained polymorphic ventricular tachycardia (VT) that were refractory to conventional antiarrhythmic medications. The overdose occurred due to a medication administration error, leading to the infusion of lignocaine at a rate eight times higher than intended, over the course of 36 h (total dose of 9964 mg, or 153 mg/kg). Remarkably, the patient remained haemodynamically stable throughout the overdose period, with normal sinus rhythm, requiring minimal ECMO support and no vasoactive agents. Further investigation into the pharmacokinetics of lignocaine during VA ECMO treatment suggested that the patient's unexpected stability and survival could be attributed to the adsorption of lignocaine onto the components of the ECMO circuit. This phenomenon potentially mitigated the cardiotoxic effects typically associated with such high doses of lignocaine, thus presenting an unusual but critical aspect of pharmacokinetics in the context of ECMO support. This case underscores the importance of investigating the complex interactions between medications and extracorporeal circuits, which can significantly alter drug pharmacokinetics and toxicity profiles.

Beyond Traditional Pain Relief: A Review of Alternative Analgesics in Myocardial Infarction Patient Management

While morphine is the recommended first-line treatment for pain management in patients with acute coronary syndrome, recent studies have raised concerns about its association with adverse outcomes. Morphine has been found to cause delayed antiplatelet effects, decreased ticagrelor absorption, increased platelet reactivity, and compromised efficacy of dual antiplatelet therapy (DAPT). Alternative analgesics, such as lidocaine, fentanyl, and acetaminophen, have begun to emerge as viable alternatives, each with unique mechanisms and potential benefits. Lidocaine is demonstrated to have superior effects in reducing microvascular obstruction and fewer adverse events compared to fentanyl, despite being less effective in pain reduction. Fentanyl, which shows rapid onset and powerful analgesic properties, may interfere with ticagrelor absorption, potentially affecting platelet inhibition. Acetaminophen, a centrally acting analgesic, emerges as a safer alternative with comparable pain relief efficacy and minimal side effects. The results of multiple clinical trials emphasize the significance of customizing pain management approaches to match individual patient profiles and achieving the optimal balance between pain relief and potential adverse outcomes.

Cervical Epidural Anesthesia in the Management of a Patient With Breast Cancer With Cardiac Dysfunction: A Case Report

As one of the most common cancers in the world, breast cancer management is fraught with difficulties. Modified radical mastectomy (MRM) is one of the surgical procedures that is essential to the treatment of breast cancer. Cardiovascular issues, especially a reduced ejection fraction (EF), make these procedures more complex. Due to their increased vulnerability to adverse cardiac events during surgery, it is imperative to preserve hemodynamic stability and reduce physiological stress responses in these patients. A promising option in this changing field of anesthetic techniques is cervical epidural anesthesia (CEA). It effectively reduces hemodynamic fluctuations frequently linked to general anesthesia while providing analgesia. We report the case of an elderly patient with decreased EF and breast cancer scheduled for an MRM. To ensure the best possible outcomes in complex cases, the case report covers preoperative assessment, anesthesia technique, intraoperative management, and postoperative outcomes. This highlights the critical significance of customizing anesthesia and surgical procedures, informed consent, and meticulous postoperative pain management, and ultimately advocates for the broader implementation of CEA in such settings.

Preoperative Bladder Scanning Can Predict Postoperative Urinary Retention Following Total Joint Arthroplasty

BACKGROUND

As total joint arthroplasty (TJA) moves to the outpatient setting, it is becoming clear that postoperative urinary retention (POUR) is a potential impediment to same-day discharge. Although risk factors for POUR have been widely studied, the lack of their clinical utility warrants investigation of specific preoperative factors that can assist in surgical planning and patient optimization. The purpose of the current study was to determine whether preoperative symptom surveys and bladder scanning are useful tools in identifying POUR risk.

METHODS

We performed a prospective analysis of patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA) at a high-volume orthopaedic hospital between December 1, 2020, and September 30, 2021. A total of 507 patients (324 female and 183 male) undergoing TJA completed the American Urological Association (AUA) symptom index preoperatively and then again at 14 and 64 days postoperatively. Post-void bladder scans were obtained in the immediate preoperative setting. POUR was defined as a bladder volume of >500 mL that required catheterization. Chi-square and quintile analysis were used to compare bladder scanning volumes, and Student t tests were used to compare AUA scores.

RESULTS

The rate of POUR was 37% (66 female and 34 male) and 23% (37 female and 19 male) in the TKA and THA groups, respectively. Increasing post-void residual volume (PVRV) measured on preoperative bladder scanning was found to be predictive of POUR. Among the TKA cohort, younger age and lower body mass index were also associated with increased catheterization, although age was not statistically significant. The AUA symptom survey was not found to correlate with POUR in either population.

CONCLUSIONS

There was a predictable and exponential increase in the rate of catheterization as preoperative PVRV increased from 50 to 200 mL. The AUA symptom score showed no utility in predicting POUR in our study population. We propose that preoperative bladder ultrasonography become standard practice in TJA, especially among patients scheduled for same-day discharge.

LEVEL OF EVIDENCE

Prognostic Level II . See Instructions for Authors for a complete description of levels of evidence.

Stroke Secondary to Air Embolism Following Laparoscopic Nissen Fundoplication

An air embolism is characterized by the entry of gas bubbles into the circulatory system, which can lead to the possible occlusion of blood vessels, posing a potentially life-threatening risk. While commonly associated with lung trauma or decompression sickness, it can also result from medical procedures such as central venous catheter insertion or, in our case, gas insufflation for laparoscopic surgery. We present the case of a 65-year-old female who suffered from a stroke secondary to an air embolism after undergoing a laparoscopic Nissen fundoplication in which carbon dioxide insufflation of the abdominal cavity was utilized. We also will discuss the elusive etiology of this complication as well as diagnosis, treatment, and proposed preventative measures.  A 65-year-old female with gastroesophageal reflux disease and a hiatal hernia elected to undergo a laparoscopic Nissen fundoplication for hernia repair. After a successful surgery, the patient was found with significant neurological deficits, including left-sided hemiplegia, numbness in the left hand, hemianopsia, dysarthria, and a National Institutes of Health Stroke Scale score of 20. CT head imaging revealed several low-density foci in the right frontal lobe, while CT neck and chest imaging revealed subcutaneous emphysema and pneumomediastinum. Subsequent labs were significant for an elevated lactate at 7.6 mmol/L. MRI of the brain depicted evidence of an acute infarct in the right frontal lobe with diffusion-weighted imaging (DWI) sequences. The imaging results were correlated with the patient's clinical presentation to establish the diagnosis of a nondominant hemisphere stroke, localized to an anterior branch of the right middle cerebral artery (MCA). After intubation and supportive treatment for three days, the patient was extubated and able to follow commands but had left facial weakness and diminished strength in the left upper and lower extremities. At the two-month follow-up visit, the patient no longer had any focal neurological deficits. Air emboli, though very rare, can occur as a complication in laparoscopic surgeries that utilize CO2 for body cavity insufflation. Patients may be asymptomatic with small, self-limiting emboli, while others may exhibit pulmonary symptoms, cardiac arrest, or focal neurologic changes, depending on the emoji's size and location. Given the wide range of patient presentations, the elevated mortality of laparoscopic procedures complicated by air emboli, and the rare occurrence of focal neurological symptoms as depicted in this case, rapid diagnosis and close postoperative observation and treatment are vital for both short-term and long-term patient outcomes.

A phenotypic screening platform for chronic pain therapeutics using all-optical electrophysiology

ABSTRACT

Chronic pain associated with osteoarthritis (OA) remains an intractable problem with few effective treatment options. New approaches are needed to model the disease biology and to drive discovery of therapeutics. We present an in vitro model of OA pain, where dorsal root ganglion (DRG) sensory neurons were sensitized by a defined mixture of disease-relevant inflammatory mediators, here called Sensitizing PAin Reagent Composition or SPARC. Osteoarthritis-SPARC components showed synergistic or additive effects when applied in combination and induced pain phenotypes in vivo. To measure the effect of OA-SPARC on neural firing in a scalable format, we used a custom system for high throughput all-optical electrophysiology. This system enabled light-based membrane voltage recordings from hundreds of neurons in parallel with single cell and single action potential resolution and a throughput of up to 500,000 neurons per day. A computational framework was developed to construct a multiparameter OA-SPARC neuronal phenotype and to quantitatively assess phenotype reversal by candidate pharmacology. We screened ∼3000 approved drugs and mechanistically focused compounds, yielding data from over 1.2 million individual neurons with detailed assessment of functional OA-SPARC phenotype rescue and orthogonal "off-target" effects. Analysis of confirmed hits revealed diverse potential analgesic mechanisms including ion channel modulators and other mechanisms including MEK inhibitors and tyrosine kinase modulators. Our results suggest that the Raf-MEK-ERK axis in DRG neurons may integrate the inputs from multiple upstream inflammatory mediators found in osteoarthritis patient joints, and MAPK pathway activation in DRG neurons may contribute to chronic pain in patients with osteoarthritis.

Functional Stimulation and Imaging to Predict Neuromodulation of Chronic Low Back Pain

Back pain is one of the most common aversive sensations in human experience. Pain is not limited to the sensory transduction of tissue damage; rather, it encompasses a range of nervous system activities including lateral modulation, long-distance transmission, encoding, and decoding. Although spine surgery may address peripheral pain generators directly, aberrant signals along canonical aversive pathways and maladaptive influence of affective and cognitive states can result in persistent subjective pain refractory to classical surgical intervention. The clinical identification of who will benefit from surgery-and who will not-is increasingly grounded in neurophysiology.

The effect of physical interventions on pain control after orthodontic treatment: A systematic review and network meta-analysis

OBJECTIVE

Pain is a frequent adverse reaction during orthodontic treatment, which can significantly reduce treatment compliance and compromise the expected treatment effect. Physical interventions have been used to alleviate pain after orthodontic treatment, but their effectiveness is controversial. This study used a network meta-analysis to assess the efficacy of various physical interventions typically used in managing pain after orthodontic treatment, with a view to provide evidence-based recommendations for representative interventions for orthodontic pain relief during peak pain intensity.

METHODS

A systematic search of six electronic databases, from their respective inception dates, was conducted to identify relevant literature on the efficacy of various typical physical interventions for managing pain after orthodontic treatment. Literature screening was performed according to the Cochrane System Evaluator's Manual. Stata 16.0 was used to assess heterogeneity, inconsistency, publication bias, and sensitivity to generate an evidence network diagram and conduct a network meta-analysis.

RESULTS

In total, 771 articles were reviewed to collect literature on interventions, including low-level laser therapy (LLLT), vibration, acupuncture, and chewing. Of these, 28 studies using a visual analog scale (VAS) as an outcome indicator were included. The results showed that LLLT, vibration, acupuncture, and chewing effectively relieved the pain symptoms in patients after orthodontic treatment. At 24 h post-treatment, LLLT (surface under the cumulative ranking curve [SUCRA] = 80.8) and vibration (SUCRA = 71.1) were the most effective interventions. After 48 h of treatment, acupuncture (SUCRA = 89.6) showed a definite advantage as the best intervention.

CONCLUSION

LLLT, vibration, acupuncture, and chewing can alleviate pain associated with orthodontic treatment. Among these interventions, acupuncture was found to be the most effective at 48 h after orthodontic treatment. In addition, acupuncture demonstrated long-lasting and stable pain-relieving effects. However, further studies are needed to determine the most suitable equipment-specific parameters for acupuncture in relieving pain associated with orthodontic treatment.

Pediatric antiarrhythmics and toxicity: A clinical review

Antiarrhythmic medications are fundamental in the acute and chronic management of pediatric arrhythmias. Particularly in the pediatric patient population, associated antiarrhythmic toxicities represent important potential adverse effects. Emergency medicine clinicians must be skilled in the detection, workup, and management of antiarrhythmic toxicity. This is a clinical review of the indications, pharmacology, adverse effects, and toxicologic treatment of antiarrhythmics commonly used in the pediatric patient population.

The Effect of Warmed Serum on Shivering and Recovery Period of Patients Under General and Spinal Anesthesia: A Randomized Clinical Trial

PURPOSE

Postoperative hypothermia followed by shivering is a common phenomenon in patients undergoing surgery under anesthesia, and should be prevented and treated in postoperative patient care units. This study was conducted to investigate the effect of warmed serum injection on postoperative shivering and recovery period of patients operated under general and spinal anesthesia.

DESIGN

In this clinical trial, patients to be operated on under general and spinal anesthesia were randomly assigned into two groups of test and control. In the test group, patients received warmed intravenous fluids and blood products. All patients were monitored to record vital signs, incidences of hypothermia and shivering, and recovery period.

METHODS

The collected data were analyzed with repeated measures analysis of variance to detect significant differences between groups and significant changes within groups over time.

FINDINGS

The incidence of nausea, vomiting, and shivering in the intervention and control groups was (4.7%, 42%), (2.8%, 16.8%), and (6.6%, 43%), respectively. Patients in the intervention group had higher body temperature than the control group (<0.001). Also, patients under spinal anesthesia had higher body temperature than patients under general anesthesia (<0.001). Blood pressure reduction was also significantly higher in the control group than in the intervention group. The patients who received warm intravenous serum, and especially those who had received spinal anesthesia spent less time in the recovery room (<0.001).

CONCLUSIONS

The use of warmed intravenous serum increased the patients' core temperature, reduced their postoperative shivering, and shortened their recovery period. Considering the potential risks associated with hypothermia, using such methods for hypothermia prevention can be highly effective in preventing shivering and prolongation of the recovery period and other potential complications. Anesthesia specialists and technicians are therefore encouraged to use this method as a preventive measure.

Assessment of the Pharmacokinetics and Pharmacodynamics of Injectable Lidocaine and a Lidocaine-Impregnated Latex Band for Castration and Tail Docking in Lambs

The objectives of this study were to assess the pharmacokinetics and pharmacodynamics of the current standard-of-care for pain mitigation in lambs during castration and tail docking (injectable lidocaine) and assess the ability of Lidocaine-Loaded Bands (LLBs) to deliver therapeutic concentrations into the contacted tissues over time. The study was comprised of four different trials: (1) investigation of in vitro release of lidocaine from LLBs; (2) pharmacokinetics and pharmacodynamics of injectable lidocaine in scrotal and tail tissue; (3) pharmacokinetics and pharmacodynamics of in vivo delivery of lidocaine with LLBs placed on the tail and scrotum of lambs; and (4) a "proof-of-concept" study comparing the sensation of control- versus LLB-banded tail tissue over time. The use of injectable lidocaine provides effective short-term anesthesia for 120 to 180 min following the injection; however, additional strategies are needed to manage long-term pain. The use of an LLB could provide an alternative where tissue lidocaine concentrations meet or exceed the EC50 for at least 21-28 days and, based on electrostimulation data, provides local anesthesia for at least 3 days when compared to a control band. Further studies are needed to compare the use of an injectable local anesthetic to the LLBs.

Effects of flow rate accuracy in two-day anticancer drug infusion with disposable pumps on plasma drug concentrations

BACKGROUND

Elastomeric pumps have a curved infusion rate profile over infusion time. Chemically driven pumps can overcome such limitations of elastomeric pumps and infuse constantly. However, studies on the pharmacokinetic benefit of chemically-driven pumps are insufficient.

OBJECTIVE

This study aimed to determine effects of constant infusion with a chemically-driven pump on plasma drug concentrations compared to elastomeric pumps.

METHODS

Infusion rate profiles of a chemically driven pump and two elastomeric pumps were measured in vitro tests under three height conditions of drug reservoir. Plasma drug concentrations were estimated using a pharmacokinetic model of 5-fluorouracil (5FU).

RESULTS

The chemically-driven pump was more accurate than elastomeric pumps during the total infusion time (Root-mean-square-error (RMSE): 3% vs. 13%) which thus reduced its deviation of plasma 5FU concentration over time to one-fifth of that with an elastomeric pump. The chemically-driven pump had less than 5% of RMSE despite the influence of height difference.

CONCLUSION

Although chemically-driven pumps maintained plasma 5FU concentration successfully and elastomeric pumps did not, both pumps were proper for 5FU infusion because the time-dependent changes in infusion rate did not affect the area under the curve. Chemically driven pumps would be more advantageous for drugs that are sensitive to their plasma concentrations.