Physical Status Classification Research Articles

Comparison of Hemodynamic Responses to Ketofol versus Etomidate During Anesthesia Induction in Elderly Patients

Background: Nausea While elderly patients are at an increased risk of perioperative morbidity and mortality; old age alone is not a contraindication for surgery. General factors that should be considered in preoperative risk assessments include age, functional status, cognition, nutritional status, and comorbidities, such as cardiac, pulmonary, renal, and endocrine disorders. Induction of anesthesia is a critical step in surgery, particularly for elderly patients and those with a high physical status. Commonly used drugs for this purpose include etomidate and propofol. Therefore, this study aimed to compare the impact of Ketofol versus etomidate alone on the hemodynamic status of patients who fall under the ASA class II or higher. Methods: The study was a prospective randomized double-blind clinical trial, with a study population of age of ≥65 years, ASA physical status class II or higher, that were randomized into two groups. Ketofol (n=45) and, Etomidate (n=45) groups. Patients followed for clinical outcomes including their hemodynamic status during the induction period. Results: The present study showed that, the examination of hemodynamic parameters up to 10 minute after laryngoscopy showed that none of these parameters were significantly different between the two groups, while immediately after anesthesia induction, heart rate and blood pressure were found to be significantly different. However, there was no significant difference in terms of SPO2 among the two groups in any given interval. Conclusion: The results of the present study revealed that Ketofol resulted in better regulation and stability of blood pressure and heart rate in patients undergoing endotracheal intubation, compared to etomidate alone.

Cardiac output-guided haemodynamic therapy for patients undergoing major gastrointestinal surgery: OPTIMISE II randomised clinical trial

ObjectivesTo evaluate the clinical effectiveness and safety of a perioperative algorithm for cardiac output-guided haemodynamic therapy in patients undergoing major gastrointestinal surgery.DesignMulticentre randomised controlled trial.SettingSurgical services of 55 hospitals worldwide.Participants2498...

Assessing the Optimal Dose of Mivacurium for Modified Rapid Sequence Intubation in Emergency Surgical Settings: A Randomized, Double-Blind Trial

Background: Modified rapid sequence intubation (RSI) is crucial in emergency surgery, particularly for patients with a full stomach, as it allows for the administration of general anesthesia (GA). Objectives: This work aimed to evaluate mivacurium effectiveness and optimal dose in modified RSI. Methods: This randomized double-blind study involved 100 patients, aged between 20 - 60 years, of both sexes, with the American Society of Anesthesiologists physical status classification of I - III, who were undergoing emergency surgery under GA. Patients were randomized into two equal groups and received mivacurium in a dose of 0.3 mg/kg in group M1 or 0.4 mg/kg in group muscarinic-2 (M2). Results: Intubating conditions were significantly better in group M2 than in group M1. The onset of adequate muscle relaxation was significantly earlier in group M2 than in group M1 (P < 0.001). At the third minute, mean arterial blood pressure recordings were significantly lower in group M2 (P = 0.04) than in group M1. The recovery time was significantly longer in group M2 than in group M1 (P < 0.001). Conclusions: Mivacurium in a 0.4 mg/kg dose resulted in more favorable intubating conditions during RSI and a more profound, earlier onset of muscle relaxation, but with a longer recovery time compared to the 0.3 mg/kg dose.

Effect of Music Therapy on Anxiety, Stress and Sedative Requirements in Patients Undergoing Lower Limb Orthopedic Surgery Under Spinal Anesthesia: A Randomized Controlled Study.

Background Music therapy is a safe, non-pharmacological way to help reduce anxiety, especially before surgery. It helps to calm the nervous system, promotes relaxation, and offers comfort by blocking outside noise and distracting from pain. This can be helpful in managing preoperative anxiety and symptoms like hypertension and tachycardia. While the benefits of music therapy for stress and sedation are well known, its specific effects on patients receiving spinal anesthesia haven't been studied yet. Understanding this could improve care for these patients. Overall, music therapy could be a valuable tool in the surgical process. Objectives Primary objective: The study aimed to compare sedative requirements between two patient groups. Secondary objectives: To compare anxiety levels between two patient groupsusing the State-Trait Anxiety Inventory. It also assessed hemodynamic changes and measured stress levels by analyzing serum cortisol and immunoglobulin A levels in both groups. Materials and methods Ninety-two American Society of Anesthesiologists physical status class I and II patients, aged 18-65 years, with a body mass index of 18-25 kg/m2 undergoing lower limb orthopedic surgery under spinal anesthesia were selected for the study. After spinal anesthesia, the group M (n=46)patients received the music of their choice from headphones connected to mobile phones and patients in group NM (n=46)were attached headphones without any music therapy. After the attachment of headphones, propofol was administered in both the groups for sedation in a bolus dose of 1-2mg/kg iv followed by an infusion dose of 5-50 μg/kg/min. The propofol infusion was titrated based on Bispectral Index (BIS) values kept between 70 and 80 for moderate sedation. Preoperatively, blood samples were collected to measure baseline serum cortisol and IgA levels. Intraoperatively, hemodynamic parameters were measured, and anxiety level was assessed using the State-Trait Anxiety Inventory (STAI) Scale 30 minutes prior to the administration of spinal anesthesia. Postoperatively, anxiety was re-evaluated, and additional blood samples for the assessment of cortisol and IgA were taken at 30 minutes and 12 hours after the administration of spinal anesthesia. Results The mean serum cortisol was lower in Group M as compared to Group NM (15.1±1.2 vs. 17.1±1; p = 0.0001). Mean serum IgA was significantly lower in Group M as compared to Group NM (269.3±54.5 vs. 294.2±49.9; p = 0.024) during the intraoperative period. The mean STAI Score was lower in Group Mcompared to Group NM (34.87±4.53 vs. 34.61±5.06; p = 0.008). The mean propofol requirement (mg) was lower in Group M as compared to Group NM (147.8±11.3 vs. 193±16; p = 0.0001). The hemodynamic parameters were comparable between the groups (p>0.05). Conclusion Patients in the music therapy group experienced lower anxiety, stress, and serum cortisol levels during surgery, with reduced serum IgA levels and decreased propofol requirement for sedation. Overall, music therapy was effective in reducing anxiety, stress, and sedative requirements during surgery under regional anesthesia.

EGS SO11 - A Retrospective Review of Perioperative Outcomes after Laparoscopic Cholecystectomy in Older Patients

Abstract Background Laparoscopic cholecystectomy is the definitive treatment for gallstone-related disease. With an increasingly aging population, a growing number of elderly patients are presenting acutely with gallstone pathology. However, rates of perioperative mortality and complications are significantly higher in elderly patients undergoing laparoscopic cholecystectomy (Kamarajah et al). We aim to evaluate peri-operative outcomes in elderly patients presenting with acute gallstone disease who have been clinically evaluated to be appropriate for emergency cholecystectomy, and explore the impact of frailty on these outcomes. Method A retrospective study was performed on patients over the age of 75 presenting acutely with gallstone disease over a 3-year period. Data on perioperative complications, mortality at 1 year, post-operative length of stay (LOS) and 90-day readmissions were collected and analysed. The patient’s pre-operative fitness was categorized using the ASA classification of physical status and the Clinical frailty score (CFS); a 9-point scale quantifying frailty based on function. Statistical significance was assessed to determine differences between the age or frailty score groups. Results 592 patients attended hospital with gallstone-related pathology; 99 patients underwent emergency laparoscopic cholecystectomy, 486 patients were managed conservatively, and 25 patients had cholecystostomies. The post-operative mortality rate was 4%, post-operative complication 19.2% and readmission rate 11.1%. Post-operative LOS was significantly longer in frailer patients (p=0.02299). There were no statistically significant differences in mortality or post-operative complications between the CFS3 or less and CFS4 or more groups, although a general trend towards higher rates of complications and mortality was noted with increasing frailty. Conclusion Patients over 75 years of age should be carefully considered before proceeding with surgical management. Although older and frailer patients exhibited increased rates of complications and mortality post-operatively, these didn't reach statistical significance, reflecting the role of clinical decision-making regarding surgical fitness. Even for a pre-selected patient group, there is statistically significant prolonged post-operative LOS in frailer patients. This suggests a need for comprehensive preoperative assessment in this population, and a combination of CFS and ASA may be key determinants. Further studies assessing frailty and non-operative outcomes are required to substantiate these findings and guide clinical management in this population.

Effective blind bilateral superficial cervical plexus block for tracheostomy tube insertion in a geriatric patient with Ludwig angina with hypertension in resource constrained area: a case report

IntroductionLudwig angina is a rare, rapidly spreading submaxillary, submandibular, and sublingual necrotizing life-threatening widespread cellulitis of the soft tissue on the floor of the mouth that can cause fatal complications because of airway obstruction. Currently, there are few published studies assessing the efficacy of superficial cervical plexus block for airway surgery and there is no agreement in the literature about airway management. The published recommendations differ and are based on the authors’ own experiences and available resources. This report aimed to provide insight into critical patient management by performing regional anesthesia with fewer complications to the cardiovascular and respiratory systems.Case presentationWe report the case of a 70 year-old hypertensive Black Ethiopian woman with American Society of Anesthesiologist–Physical Status class III and hypertension, who was admitted to the hospital for treatment by her surgeon. The surgeon diagnosed her with Ludwig angina. After adequate physical examination and laboratory investigation, she arrived at the operation room for exploration and drainage of the abscess with a superficial cervical plexus block. She arrived safely at the adult intensive care unit for frequent suctioning. The block was effective until 6 h after the procedure with visual analogue scale (2/10), her vital signs remained stable throughout the postoperative period, and then the tracheostomy tube was removed by the surgeon after 10 days. The patient’s hemodynamic status and breathing effort were satisfactory, and she was discharged 15 days later.Clinical discussionProper airway management is critical for the survival of patients diagnosed with Ludwig angina. According to recent studies, an increasing number of patients with Ludwig angina require intensive care unit admission for tracheal intubation and mechanical breathing. However, it is uncertain whether intensive care reduces the death rate in patients with Ludwig angina. Finally, it is suggested that studies with large sample sizes and strong levels of evidence be conducted to conclude the effectiveness of superficial cervical plexus block for airway emergency surgeries.ConclusionManagement of the airway in patients with Ludwig angina is challenging. Clinicians must take precautions and make sharp decisions on the basis of a variety of circumstances, including the availability of equipment at medical facilities, such as fiberoptic intubation equipment; the anesthetist’s level of experience, such as performing superficial regional block and good mask ventilation; and the patient’s medical status at the time of presentation. As a result, intervention needs to be quick so as to avoid airway obstruction and further complications.

A Retrospective Analysis of Non-Operating Room Anesthesia Practices at University Hospital

Abstract: Objective: The use of non-operating room anesthesia (NORA) is increasing due to its advantages in procedure success and patient management. This study aims to retrospectively evaluate the NORA practices at Hatay Mustafa Kemal University hospital over a two-year period. Materials and Methods: After obtaining ethical approval, the records of patients who underwent sedation-analgesia outside the operating room for diagnostic and therapeutic purposes between 2018 and 2020 were retrospectively analyzed. Recorded data included age, gender, weight, American Society of Anesthesiologists (ASA) physical status classification, comorbidities, types of procedures, anesthesia and recovery times, medications used, and complications. Results: A total of 1199 patients were included in the study, with 63.3% (759) adults and 36.7% (440) pediatric patients. The patient group comprised 69.1% (829) female and 30.9% (370) male, with a mean age of 35.62 ± 28.69 years (0-98). Of the patients, 46.1% (547) were in the ASA 2 risk group. The most common procedure was Magnetic Resonance Imaging (MRI) 45.1% (541). The most frequently used anesthetic regimen was a combination of midazolam, propofol, and ketamine 70.1% (840). Hypotension was the most common complication 3.7% (44), followed by bradycardia 3.2% (38). Hypertension was the most frequently (12.0%) observed comorbidity. Conclusion: The frequency of non-operating room anesthesia (NORA) procedures is steadily increasing due to growing patient and surgeon satisfaction. Comprehensive preanesthetic evaluations, ensuring appropriate physical conditions and patient-specific drug selection are crucial for appropriate and rapid interventions for possible complications. Keywords: Non-operating room anesthesia practices, Pre-anesthetic evaluation, Sedation, Anesthetic agents, Complications

Antibiotic Prophylaxis for Elective Pediatric Laparoscopic Cholecystectomies

BackgroundThe Surgical Infection Society (SIS) guidelines recommend against the use of surgical antibiotic prophylaxis (SAP) for low-risk patients undergoing elective laparoscopic cholecystectomies. MethodsUsing National Surgical Quality Improvement Program (NSQIP) data, 5440 pediatric patients were identified who underwent laparoscopic cholecystectomy from 2021 to 2022. Patients who had immunodeficiency, active malignancy, American Society of Anesthesiologists (ASA) physical status classification 3–5, procedure indicated for infection, emergent procedure, received intravenous antibiotics before the prophylaxis window, or missing SAP data were excluded. Results3959 patients were included in the analysis. Among these patients, 3570 (90.2 %) received SAP. Overall incidence of 30-day superficial incisional surgical site infection (SSI), deep incisional SSI, and organ space SSI were 0.9 %, 0.0 %, and 0.1 %, respectively. The incidence of superficial incisional SSI was significantly higher in the patients who did not receive SAP (SAP 0.8 %, no SAP 2.1 %; p = 0.024). The incidence of organ space SSI was also significantly higher in the patients who did not receive SAP (SAP 0.1 %, no SAP 0.8 %; p = 0.008). There was no difference in the incidence of C. diff colitis (SAP 0.1 %, no SAP 0.0 %; p = 1.000). Multivariable modeling, controlling for Hispanic ethnicity, age, and gender, demonstrated patients that received SAP were significantly less likely to have any postoperative SSI compared to patients who did not receive SAP (OR = 0.35). ConclusionHospitals are not currently compliant with SIS guidelines regarding omission of antibiotic prophylaxis for low-risk patients undergoing elective laparoscopic cholecystectomies. The authors advocate for additional studies and reassessment of current guidelines for pediatric patients given the above findings. Type of StudyRetrospective comparative study. Level of EvidenceIII.

Development and validation of prediction models for prehospital triage of military trauma patients.

The introduction of wireless sensors will enable military care providers to continuously and remotely assess/monitor vital signs. Prediction models are needed to use such data adequately and aid military care providers in their on-scene decision-making to optimise prehospital triage and improve patient outcomes. A prospective cohort comprising data from eight Emergency Medical Services and seven inclusive trauma regions was used to develop and validate prediction models that could aid military care providers in their prehospital triage decisions. Healthy (American Society of Anesthesiologists physical status classification 1 or 2) admitted adult trauma patients (aged ≥16 and ≤50 years), who suffered from a trauma mechanism that could occur to military personnel and were transported by ambulance from the scene of injury to a hospital, were included. A full model strategy was used, including prehospital predictors that are expected to be automaticly collectible by wireless sensors or to be incorporated in a personalised device that could run the models. Models were developed to predict early critical-resource use (ECRU), severe head injury (Abbreviated Injury Scale (AIS) ≥4), serious thoracic injury (AIS ≥3) and severe internal bleeding (>20% blood loss). Model performance was evaluated in terms of discrimination and calibration. Prediction models were developed with data from 4625 patients (80.0%) and validated with data from 1157 patients (20.0%). The models had good to excellent discriminative performance for the predicted outcomes in the validation cohort, with an area under the curve of 0.80 (95% CI 0.76 to 0.84) for ECRU, 0.83 (0.76 to 0.91) for severe head injury, 0.75 (0.70 to 0.80) for serious thoracic injury and 0.85 (0.78 to 0.93) for severe internal bleeding. All models showed satisfactory calibration in the validation cohort. The developed models could reliably predict outcomes in a simulated military trauma population and potentially support prehospital care providers in their triage decisions.

Ultrasonography versus conventional palpation for epidural analgesia in pediatrics undergoing midabdominal urological operations: a randomized clinical trial.

Epidural block may be facilitated by ultrasound (US), particularly in pediatrics. Our goal was to compare pre-procedural US with traditional palpation for epidural block in pediatrics undergoing midabdominal urological procedures. A total of 110 patients (1 to 12 years of age) with physical status Class I and II were enrolled in this study. Patients were randomly assigned to 2 equal groups (US and palpation; 55 subjects in each group) using the permuted block randomization method with randomly selected block sizes of four and six. Study subjects and outcomes evaluators were blinded to the study group. The primary outcome was the rate of successful epidural block at the first needle pass. There was a significant increase in success rate of the epidural block at the first needle pass in US group compared with the palpation group, 80% and 47.3% respectively, 95% Confidence Interval (2.379-8.35), P value ˂0.001. The epidural space detection time was shorter significantly in the US group compared to the palpation group. The procedural complications (unintentional vascular puncture and epidural puncture) did not occur in the 2 groups. Preprocedural US facilitated epidural block in pediatrics undergoing mid-abdominal urological operations compared with conventional techniques.

Lessons learned from implementing laparoscopic common bile duct exploration at a safety net hospital

BackgroundMounting evidence favors one-stage laparoscopic cholecystectomy with common bile duct exploration over endoscopic retrograde cholangiopancreatography with cholecystectomy for choledocholithiasis. However, laparoscopic cholecystectomy with common bile duct exploration remains underused. In 2020, our center initiated a laparoscopic cholecystectomy with common bile duct exploration program for choledocholithiasis. This study compares the experience and outcomes of laparoscopic cholecystectomy with common bile duct exploration compared with endoscopic retrograde cholangiopancreatography with cholecystectomy at a safety net hospital. MethodsThis single-center, retrospective study analyzed data from 179 patients admitted with choledocholithiasis from 2019 to 2023. Demographics, preoperative investigations, intraoperative details, and postoperative outcomes were evaluated. ResultsThe study included 179 patients (55.6 ± 21.0 years, 66% female) with American Society of Anesthesiologists Physical Status Classification System score III (II–III) and body mass index 29 kg/m2 (25.8–35.5 kg/m2). Of these, 148 underwent endoscopic retrograde cholangiopancreatography with cholecystectomy and 31 underwent laparoscopic cholecystectomy with common bile duct exploration. Demographic and preoperative data were similar between groups. Laparoscopic cholecystectomy with common bile duct exploration achieved a 74.2% success rate. Laparoscopic cholecystectomy with common bile duct exploration’s average operative time was 180 (139–213) minutes, with a 3.2% postoperative bile leak and 35.4% requiring postoperative ERCP. Median lengths of stay were 3 (1–4) for laparoscopic cholecystectomy with common bile duct exploration and 4 days (3–7) for endoscopic retrograde cholangiopancreatography with cholecystectomy (Z = –3.16, P = .002). The number of readmissions were 1.2 ± 0.4 for laparoscopic cholecystectomy with common bile duct exploration and 1.9 ± 1.3 for endoscopic retrograde cholangiopancreatography with cholecystectomy (t = 1.43, P = .08). Additional procedures for choledocholithiasis were performed in 36% of laparoscopic cholecystectomy with common bile duct exploration and 79% of ERCP + LC cases (χ2 = 21.7, P < .0001). ConclusionThe study highlights challenges in implementing laparoscopic cholecystectomy with common bile duct exploration at a safety net hospital. Results support laparoscopic cholecystectomy with common bile duct exploration over endoscopic retrograde cholangiopancreatography, with cholecystectomy, with shorter stays, fewer readmissions, and fewer additional procedures reported. Laparoscopic cholecystectomy with common bile duct exploration remains underused, with only 17.3% of patients who underwent one-stage laparoscopic cholecystectomy with common bile duct exploration. Further research is needed for laparoscopic cholecystectomy with common bile duct exploration’s expansion as the superior choledocholithiasis treatment.

Comparison of the Analgesic Efficacy of Ultrasound-Guided Transperineal Approach Using Pudendal Nerve Block Versus Caudal Block in Children Undergoing Urological Surgeries: A Randomized Controlled Trial.

Caudal block is an effective regional anesthesia technique for perineal surgeries but is associated with various adverse effects. Recently, pudendal nerve block has emerged as a promising alternative for these procedures. This study assessed the effectiveness of a novel transperineal technique for ultrasound-guided pudendal nerve block and compares it with ultrasound-guided caudal block for perineal surgeries in pediatric patients. The study included 60 American Society of Anesthesiologists (ASA) Physical Status Classification Systemgrade I/II children aged 1-12 years and scheduled for elective perineal operations under general anesthesia. Patients were randomly allocated to two equal groups: Group C (ultrasound-guided caudal block) and Group P (ultrasound-guided pudendal nerve block). The groups were evaluated for time to first rescue analgesia (primary outcome), block performance time, total analgesic consumption, Face, Legs, Activity, Cry, and Consolability (FLACC) scores, time to achieve a Post-Anesthetic Discharge Scoring System (PADSS) score of 9, and any complications. The median interquartile range (IQR) first rescue analgesia time was significantly higher in the pudendal block (17.5 (17-18) hours vs 4.65 (4.5-4.77) hours; p<0.001). The median (IQR) dose of postoperative analgesia (diclofenac) required was similar in the pudendal block group and caudal group (10 (0-10) mg vs 10 (0-20) mg; p=0.290). The median (IQR) FLACC scores at "zero" hour post-surgery were 2 (2-2) and 2 (1-2) in the pudendal and caudal groups, respectively (p=0.052). The median (IQR) PADDS score was significantly higher in the pudendal group (10 (9.25-10) vs 9 (8-9); p<0.001). The time to reach a PADSS score of 9 was significantly longer in the pudendal group (21.4±3 vs 14.9±4.8 hours; p<0.0001). There were no complications in either group. The findings of this study suggest that pudendal nerve blockprovides longer-lasting analgesia, lower pain scores, andfaster readiness for discharge though with a similar analgesic consumption compared to caudal block. These resultsindicate the potential of ultrasound-guided pudendal nerve blocks as a beneficial and safe alternative to caudal block for perineal procedures in children.

The influence of anesthetic drug strategy on the incidence of post-induction hypotension in elective, non-cardiac surgery – A prospective observational cohort study

Study objectivesTo identify the influence of modifiable factors in anesthesia induction strategy on post-induction hypotension (PIH), specifically the type, dosage and speed of administration of induction agents. A secondary aim was to identify patient related non-modifiable factors associated with PIH. DesignSingle-center, prospective observational cohort study. SettingOperating room. PatientsAdult, ASA I-IV patients undergoing elective, non-cardiac surgery under general anesthesia (GA). InterventionsNone. MeasurementsContinuous non-invasive blood pressure using finger-cuff technology. PIH was defined as mean arterial pressure (MAP) <65 mmHg ≥1 min, and, separately, as a > 30 % decrease from baseline MAP ≥1 min. Main resultsStudy measurements were performed in 760 patients, of which 720 were suitable for analysis. A total of 238 patients (33.1 %) experienced PIH according to the 65 mmHg threshold, and 287 (39.9 %) using the 30 % decrease in MAP threshold. Remifentanil administration was associated with increased risk of PIH according to either definition (MAP <65 mmHg: OR 1.88, 95 %CI 1.31–2.69, p < 0.001, 30 % MAP decrease: OR 1.66, 95 %CI 1.15–2.40, p = 0.007). Pre-emptive vasopressor use (before or during first minute of GA) was associated with reduced risk of PIH (MAP <65 mmHg: OR 0.65, 95 %CI 0.45–0.95, p = 0.027, MAP 30 % decrease: OR 0.58, 95 %CI 0.40–0.84, p = 0.004). Speed of propofol bolus administration, propofol bolus dose, and esketamine use were not associated with PIH in multivariable analysis. Propofol bolus dose decreased with increasing age and American Society of Anesthesiologists physical status classification. ConclusionsPIH was common in this patient cohort, regardless of the definition used. Two of the five examined modifiable factors were associated with PIH: remifentanil infusion was associated with an increased risk, and pre-emptive vasopressor use was associated with a decreased risk of PIH. No association between propofol dose and PIH was found, most likely due dose adjustment based on clinical assessment rather than a true absence of effect. Clinical registration numberThis study was registered in the Dutch Medical Research in Humans (OMON) register on 18 June 2019 (ID: NL7810). The study was approved by the Medical Ethics Committee of the Amsterdam UMC, location AMC, the Netherlands in December 2018 (NL 6748.018.18; 2018).

Effect of prophylactic infusion of norepinephrine on the prevention of hypotension during vertebroplasty: a randomized clinical trial

BackgroundTransient hypotension is a common occurrence during the implantation of bone cement. This placebo-controlled randomized clinical trial study investigated the effect of prophylactic infusion of norepinephrine on the incidence of hypotension in senior patients who underwent vertebroplasty.MethodsThe trial recruited patients who were greater than or equal to 65 years of age, had an American Society of Anesthesiologist physical status classification of I to III, and underwent vertebroplasty from August 2020 to August 2021 at the Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine in China. The patients were randomly grouped according to whether they received either a norepinephrine infusion of 0.05 µg/kg/min or an equivalent volume of saline 10 min before implantation of bone cement. Intraoperative hemodynamics were monitored continuously by the MostCare system at the following 7 time points: 10 min before implantation of bone cement and immediately, 30 s, 1, 3, 5, and 10 min after implantation of bone cement. We also recorded the number of hypotensive episodes and the total number of vasopressors after implantation of bone cement. Multivariable logistic regression was used to assess the risk factors associated with hypotension after implantation of bone cement.ResultsA total of 63 patients were randomized to the control group (n = 31; median [IQR] age, 74 [69–79] years) and the norepinephrine group (n = 32; median [IQR] age, 75 [71–79] years). The incidence of hypotension in the norepinephrine group was significantly lower than that in the control group after implantation of bone cement (12.5% vs. 45.2%; relative risk [RR], 3.61 [95% CI, 1.13–15.07]; P = 0.005). Moreover, the median (IQR) number of hypotensive episodes (0 [0–0] vs. 0 [0–2]; P = 0.005) and the total number of vasopressors (0 [0–0] vs. 0 [0–1]; P = 0.004) in the norepinephrine group were significantly lower than those in the control group. Furthermore, compared with the baseline, the MAP significantly decreased at 1 min (P = 0.007) and 3 min (P < 0.001) after bone cement implantation in the control group. However, the MAP at 3 min in the norepinephrine group was significantly higher than that in the control group (P < 0.001). The incidence of complications was not different between the groups. In multivariable logistic regression, the FRAIL score (OR, 2.29; 95% CI, 1.21–4.31) was identified as a risk factor associated with hypotension.ConclusionProphylactic infusion of norepinephrine before bone cement implantation can stabilize hemodynamics and reduce the incidence of hypotension after implantation of bone cement.

A Scoping Review of GLP-1 Receptor Agonists: Are They Associated with Increased Gastric Contents, Regurgitation, and Aspiration Events?

Background: The increased popularity and ubiquitous use of glucagon-like peptide-1 receptor agonists (GLP-1 RAs) for the treatment of diabetes, heart failure, and obesity has led to significant concern for increased risk for perioperative aspiration, given their effects on delayed gastric emptying. This concern is highlighted by many major societies that have published varying guidance on the perioperative management of these medications, given limited data. We conducted a scoping review of the available literature regarding the aspiration risk and aspiration/regurgitant events related to GLP-1 RAs. Methods: A librarian-assisted search was performed using five electronic medical databases (PubMed, Embase, and Web of Science Platform Databases, including Web of Science Core Collection, KCI Korean Journal Database, MEDLINE, and Preprint Citation Index) from inception through March 2024 for articles that reported endoscopic, ultrasound, and nasogastric evaluation for increased residual gastric volume retained food contents, as well as incidences of regurgitation and aspiration events. Two reviewers independently screened titles, abstracts, and full text of articles to determine eligibility. Data extraction was performed using customized fields established a priori within a systematic review software system. Results: Of the 3712 citations identified, 24 studies met eligibility criteria. Studies included four prospective, six retrospective, five case series, and nine case reports. The GLP-1 RAs reported in the studies included semaglutide, liraglutide, lixisenatide, dulaglutide, tirzepatide, and exenatide. All studies, except one case report, reported patients with confounding factors for retained gastric contents and aspiration, such as a history of diabetes, cirrhosis, hypothyroidism, psychiatric disorders, gastric reflux, Barrett's esophagus, Parkinson's disease, dysphagia, obstructive sleep apnea, gastric polyps, prior abdominal surgeries, autoimmune diseases, pain, ASA physical status classification, procedural factors (i.e., thyroid surgery associated with risk for nausea, ketamine associated with nausea and secretions), and/or medications associated with delayed gastric emptying (opioids, anticholinergics, antidepressants, beta-blockers, calcium channel blockers, DPP-IV inhibitors, and antacids). Of the eight studies (three prospective and five retrospective) that evaluated residual contents in both GLP-1 users and non-users, seven studies (n = 7/8) reported a significant increase in residual gastric contents in GLP-1 users compared to non-users (19-56% vs. 5-20%). In the three retrospective studies that evaluated for aspiration events, there was no significant difference in aspiration events, with one study reporting aspiration rates of 4.8 cases per 10,000 in GLP-1 RA users compared to 4.6 cases per 10,000 in nonusers and the remaining two studies reporting one aspiration event in the GLP-1 RA user group and none in the non-user group. In one study that evaluated for regurgitation or reflux by esophageal manometry and pH, there was no significant difference in reflux episodes but a reduction in gastric acidity in the GLP-1 RA user group compared to the non-user group. Conclusions: There is significant variability in the findings reported in the studies, and most of these studies include confounding factors that may influence the association between GLP-1 RAs and an increased risk of aspiration and related events. While GLP-1 RAs do increase residual gastric contents in line with their mechanism of action, the currently available data do not suggest a significant increase in aspiration and regurgitation events associated with their use and the withholding of GLP-1 RAs to reduce aspiration and regurgitation events, as is currently recommended by many major societal guidelines. Large randomized controlled trials (RCTs) may be helpful in further elucidating the impact of GLP-1 RAs on perioperative aspiration risk.

Analysis of pressure-induced deviation of the cricothyroid membrane among pediatric patients

BackgroundsHypoxemia develops more quickly in children than in adults due to their high oxygen consumption relative to their body weight and small functional residual capacity. Therefore, cricothyroid puncture must be performed promptly in cannot-intubate and cannot-ventilate situations. However, the success rate of cricothyroid puncture in children is &amp;lt;1%. We hypothesized that the low success rate of cricothyroid puncture in children may be related to the cricothyroid membrane's hypermobility. The aim of the present study was to measure the deviation of the cricothyroid membrane from the midline when applying compressive pressure.MethodsAfter obtaining institutional ethics committee approval, written informed consent was obtained from the patients’ parents. Children aged from 1 month to 15 years who had undergone scheduled operations under general anesthesia and with an American Society of Anesthesiologists Physical Status Classification grade of 1 or 2 were enrolled in this study. The patients were divided into the following four different age groups: 1 month–1 year, 2–4 years, 5–10 years, and 11–15 years. After the intravenous injection of fentanyl, propofol, and rocuronium, the airway was identified using a linear hockey stick ultrasound probe. The cricothyroid membrane was compressed with a force of 5 newtons (N), and cricothyroid membrane deflection was recorded. The primary outcome was the cricothyroid membrane deviation from the midline relative to the tracheal diameter.ResultsTwenty patients were enrolled in this study. No adverse events were noted. The mean cricothyroid membrane deviations from the midline divided by the tracheal diameter was 0.16 ± 0.09, 0.05 ± 0.04, 0.04 ± 0.04, and 0.02 ± 0.03 in children aged 1 month–1 year, 2–4 years, 5–10 years, and 11–15 years, respectively.ConclusionThe cricothyroid membrane deviation due to the application of a compressive force to the overlying skin tended to be larger in younger patients.

The effect of deep versus awake removal of the laryngeal mask airway on the incidence of emergence delirium in paediatric tonsillectomy: A randomised controlled trial.

Emergence delirium, characterised by inconsolable crying, perceptual disturbances and thrashing, occurs in young children during the recovery phase from general anaesthesia. Our aim was to determine whether timing of laryngeal mask airway removal (deeply anaesthetised versus awake) influenced the incidence of emergence delirium in children after tonsillectomy. A single-centre, randomised controlled trial was conducted at Albury Wodonga Health, a regional hospital in Australia. Included patients were two to seven years old, American Society of Anesthesiologists physical status classification 1-2, undergoing elective tonsillectomy (with or without adenoidectomy or grommet insertion) under general anaesthesia. Patients were randomised to have their laryngeal mask removed whilst deeply anaesthetised (in the operating theatre) or after awakening (in the post-anaesthesia care unit (PACU)). Pediatric Anesthesia Emergence Delirium score was determined at 5 and 20 min after eye opening, and frequency of complications (cough, vomiting, excessive salivation, oxygen desaturation and laryngospasm) in the PACU were recorded. Sixty-two patients were randomised to deep laryngeal mask removal and 62 to awake. In the awake versus deep groups, 33 (53%) versus 40 (65%) participants had emergence delirium at 5 min (odds ratio (OR) 0.63, 95% confidence interval (CI) 0.30 to 1.29, P = 0.20). At 20 min, 18 (29%) vs. 19 (31%) participants had emergence delirium (OR 0.93, 95% CI 0.43 to 2.00, P = 0.88). A greater incidence of most PACU complications was observed in the awake versus deep group; cough (24% vs. 8%), vomiting (8% vs. 0%), excessive salivation (23% vs. 8%) and oxygen desaturation (16% vs. 0%). We found no significant difference between the two techniques in terms of preventing emergence delirium. However, other PACU complications were more frequent with awake removal.

Transversus Abdominis plane block to manage post operative pain in canine mastectomy

The aim of this study was to assess effectiveness of transversus abdominis plane block as part of a multimodal anaesthetic protocol in controlling perioperative nociception/ pain in dogs that underwent mammary tumour excision. The study included twelve dogs belonging to different breeds and ages. The dogs were classified according to the American Society of Anaesthetists (ASA) classification of physical status, based on their pre-anaesthetic evaluations and were divided into two groups: I and II, each with six dogs. Dogs in both groups received dexmedetomidine for premedication and diazepam-propofol for induction. Group I dogs were subjected to Transversus abdominis plane (TAP) block and Group II dogs were given butorphanol. Pain score was assessed using the Glasgow Composite Measure Pain Scale (GCMPS-SF) at one hour post-operatively. The pain score was significantly lower in Group I. None of the dogs in Group I required rescue analgesia. TAP block proved beneficial in mitigating nociception and postoperative pain in dogs undergoing mammary tumour excision. Keywords: Mammary tumour resection, TAP block, post-operative pain

Postoperative analgesia in patients undergoing thoracotomy: A comparison between total intravenous anesthesia and inhalation anesthesia.

Propofol is more effective than inhalational anesthesia; however, the results for the management of acute pain remain controversial. Therefore, this study aimed to determine the incidence of acute pain after inhalation anesthesia and total intravenous anesthesia among patients who underwent thoracotomy at our hospital. We conducted a single center retrospective observational study using data from electronic medical records. Sixty patients aged ≥20 years with American Society of Anesthesiologists physical status class I or II who underwent regular and emergency thoracotomy between January 1, 2016, and January 1, 2020, at Chungbuk National University Hospital were included in this study. The anesthesia and postoperative pain records of those who received total intravenous anesthesia (n=30) and inhalation anesthesia (n=30) were retrospectively reviewed. The pain score on the numeric rating scale (NRS) was evaluated at 2, 8, 24, and 30 hours postoperatively. The average NRS score of patients who received total intravenous anesthesia was lesser than that of those who received inhalational anesthesia. Moreover, the difference in the NRS scores at eight hours postoperatively was statistically significant (P <0.05). Patients who received inhalational anesthesia had a higher pain score and experienced more severe pain than those who received intravenous anesthesia. Total intravenous anesthesia with propofol-remifentanil provided better analgesia for acute postoperative pain in patients who underwent thoracotomy than inhalational anesthesia, suggesting it may be considered the combination of choice for thoracic surgery.

The Effect of Patient-Specific Variables on the Need for Dental Treatment Under General Anesthesia in Children: A Retrospective Study

Aim: For pediatric dentists, meeting the dental treatment needs of young children is often a challenge. Behavioral management techniques may be ineffective in underage children or children with special needs. Therefore, general anesthesia (GA) is required for dental rehabilitation of uncooperative children. The aim of this study was to examine the patient population treated under General Anesthesia (GA) in terms of age, gender, ASA Score (American Society of Anesthesiologists Physical Status Classification System), duration of anesthesia, duration of operation and the presence of systemic diseases of the patients. Material and Methods: In this study, 238 patients aged 2-15 years who underwent dental treatment in the General Anesthesia Operating Room of Selçuk University Faculty of Dentistry were included. Patients were divided into 2 groups according to indications for general anesthesia. Medical health status and ASA scores were analysed. Patients were also evaluated according to age, gender, duration of anesthesia and duration of dental treatment. Results: According to results, the mean age (years) and weight (kg) of the patients were 5,4 and 19,7, respectively. The gender distribution of the patients was 125 female (52,55%) and 113 male (47,5%). The number of ASA I patients was 213 (89,6%) and ASA II patients was 25 (10,5%). In terms of duration of anesthesia, 24 patients were treated in less than 60 minutes (min), 132 patients in 60-120 min and 82 patients in 120-180 min. Conclusion: Dental treatment operating rooms with inpatient services can serve more different patient groups.