Postoperative Emergence Agitation Research Articles

Effect of Dexmedetomidine versus Propofol on Sevoflurane related Emergence Agitation in Paediatric Patients: A Randomised Clinical Study

Introduction: Postoperative Emergence Agitation (EA) is a troublesome side-effect of sevoflurane anaesthesia. Drugs like dexmedetomidine and propofol offer significant benefits in reducing the incidence and severity of sevoflurane-related postoperative EA in paediatric patients. Aim: To compare the efficacy of intravenous dexmedetomidine and propofol in reducing the incidence and severity of EA associated with sevoflurane anaesthesia in paediatric patients. Materials and Methods: A randomised clinical study was conducted on 140 patients, belonging to American Society of Anaesthesiologists Physical Status (ASA PS) classes I and II, aged between 2-6 years, undergoing infraumbilical surgery lasting more than one hour. The patients were divided into two equal groups receiving dexmedetomidine 0.3 μg/kg (Group SD) and propofol 1 mg/kg (Group SP) at the start of skin closure, administered over 10 minutes. The incidence of EA in the Post Anaesthesia Care Unit (PACU) was evaluated using the Watcha scale, and the severity of EA was assessed using the Paediatric Anaesthesia Emergence Delirium (PAED) scale. A Watcha score of 3 or 4 indicated the presence of EA, while a PAED score of ≥12 was deemed significant. Statistical analysis of the data was performed using International Business Machines (IBM) Statistical Package for Social Sciences (SPSS) version 22.0, with an Independent sample t-test for comparing normally distributed quantitative parameters, and the Chi-square test for comparing categorical outcomes between the study groups. Results: The mean age of the patients in group SD was 4.19±0.78 years, and in group SP was 4.03±0.71 years. Both study groups were found to be comparable in terms of patient characteristics such as age, sex, weight, and duration of surgery (p-value >0.05). The incidence of postoperative EA, as measured by the Watcha scale, was higher in group SP compared to group SD upon arrival and up to 30 minutes in the PACU (p-value <0.001). The severity of EA, assessed using the PAED score, was greater in group SP compared to group SD at 0, 5, 10,15 and 20 minutes in the PACU (p-value <0.001). Conclusion: Dexmedetomidine 0.3 μg/kg was more effective than propofol 1 mg/kg in reducing the incidence and severity of EA associated with sevoflurane anaesthesia, with minimal haemodynamic effects and no clinically relevant severe adverse effects in both the groups. The significantly prolonged extubation times observed in the propofol group did not result in significantly longer stays in the PACU.

Emergence Agitation: Comparison of Paracetamol and Tramadol in Elective Surgery Patients

Background: Post-operative emergence agitation is frequent and self-limiting but at times may present with violent behavior and may result in harm to both patients and caregivers. The objective of this research is to find the incidence of emergence agitation and to compare the effects of paracetamol and tramadol on emergence agitation.Methods: A quasi experimental study was conducted in the Department of Anesthesiology, College of Medical Sciences, Bharatpur, Chitwan, Nepal over a period of three months. One hundred fifty ASA I and II patients aged 18 – 45 years old, posted for elective surgery under general anesthesia were included. Patients were assigned into two equal groups of 75 patients (n=75). At the end of the surgery, group A received inj. tramadol 1mg/kg, just when the surgeon starts skin closure and group B received 15 mg/kg Paracetamol. Time taken for extubation, shivering, Richmond agitation sedation scale (RASS) and sedation and Visual analogue scale (VAS) and need of rescue analgesics were recorded. Results: In paracetamol group, reversal to extubation time was 8.75±3.0 minutes which was higher compared to 6.21±1.84 minutes in tramadol group. Prevalence of shivering was higher in paracetamol group. VAS score in paracetamol group was 5.28±1.03 compared to 4.33±0.82 in tramadol group. Frequency of need of rescue analgesia was higher in paracetamol group. In the immediate postoperative period, agitation was more common. Conclusion: Use of tramadol before extubation reduces the incidence of postoperative emergence agitation, immediate postoperative pain and shivering.

Association between severe preoperative hearing impairment and postoperative emergence agitation among elderly patients undergoing middle ear surgery

BackgroundHearing impairment is an established independent risk factor for delirium.Whether preoperative hearing impairment is associated with postoperative emergence agitation (POEA) in elderly patients remains unknown. This study aimed to investigate the association between preoperative hearing impairment and POEA in elderly patients undergoing ear surgery. MethodsThis prospective observational study was carried out at an otologic centre in a tertiary hospital between July 15, 2020, and February 28, 2021. Data of 417 elderly patients who underwent microscopic and endoscopic middle ear surgery were analyzed. Pure tone average was used to assess preoperative hearing function, with a PTA ≥ 50 dB indicating severe hearing impairment. POEA was measured using the Richmond Agitation–Sedation Scale. Multiple logistic regression was used to determine the association between preoperative hearing function and POEA. ResultsOf the 417 participants, 45.8% were men, and the median age was 64 (interquartile range: 62–67) years old. Severe preoperative hearing impairment was present in 113 patients (27.1%), and POEA occurred in 42 patients (10.1%). Multiple logistic regression analysis indicated that severe preoperative hearing impairment was associated with an increased risk of POEA (odds ratio: 2.031; 95% confidence interval: 1.044–3.954, P = 0.037). ConclusionPending confirmative studies, these findings suggest that severe preoperative hearing impairment could serve as an independent predictor of POEA in older patients undergoing middle ear surgery. These results highlight the need for further research to better understand the biomarker and pathogenesis of POEA, leading to identification of targeted interventions of POEA and improvement of postoperative outcomes in patients.

Effect of caudal nalbuphine on postoperative emergence agitation in pediatrics undergoing infra-umbilical surgeries: Randomized double-blind study

ABSTRACT Background Postoperative agitation is characterized by increased recovery time, irritability, and disorientation. This study hypothesized that adding nalbuphine to caudal bupivacaine could improve postoperative emergence agitation (EA). Methods Eighty children (2-12 years and ASA I-II) undergoing sub-umbilical abdominal surgeries were randomly allocated into two equal groups. Group-B received caudal bupivacaine 0.125 of 1 ml/kg plus 2 ml normal saline, whereas Group-N received caudal bupivacaine 0.125 of 1 ml/kg plus 0.2 mg/kg nalbuphine diluted in 2ml normal saline. We evaluated postoperative EA according to the pediatric anesthesia emergence delirium scale (PAED) on admission to the PACU and every 30 minutes for two hours postoperatively. Postoperative pain, sedation, rescue analgesia complications, and parents’ satisfaction were also recorded. Results No statistically significant difference between both groups regarding the postoperative PAED scale at different times (p > 0.05), but inside each group, there was a significant decrease PAED scale at different times of assessment (p < 0.001) as compared to baseline data. Group-N had significantly better results concerning postoperative sedation and analgesia. No significant differences between study groups as regardingthe hemodynamic parameters. Group-N had a significantly prolonged time to 1st analgesic request, lower total rescue analgesia consumption, and more parents’ satisfaction scores. No serious adverse effects were recorded during the study. Conclusion Adding nalbuphine to bupivacaine during pediatric caudal block had no significantly different effects on postoperative EA (PAED score). Both drugs decreased the incidence of EA with less severity in the nalbuphine group. Nalbuphine also decreases postoperative pain with more sedation.

The effect of intranasal dexmedetomidine administration on emergence agitation or delirium in pediatric patients after general anesthesia: A meta-analysis of randomized controlled trials.

Emergence agitation or delirium can occur in pediatric patients after anesthesia. Dexmedetomidine is known to reduce the impairment of postoperative cognitive function. This study aimed to identify the role of intranasal administration of dexmedetomidine in lowering the development of emergence agitation or emergence delirium in pediatric patients after general anesthesia. Electronic databases, including PubMed, EMBASE, CENTRAL, Scopus, and Web of Science, were searched to identify studies. The primary outcome was the proportion of patients who underwent emergence agitation or emergence delirium after the surgery. Secondary outcomes included emergence time and incidence of postoperative nausea and/or vomiting. We estimated the odds ratio and mean difference with 95% confidence intervals for the determination of effect size using a random-effects model. In total, 2103 pediatric patients from 20 randomized controlled trials were included in the final analysis. The incidence of emergence agitation or emergence delirium was 13.6% in the dexmedetomidine group and 33.2% in the control group. The pooled effect size revealed that intranasal dexmedetomidine administration significantly reduced the incidence of postoperative emergence agitation or emergence delirium in pediatric patients undergoing surgery under general anesthesia (odds ratio 0.25, 95% confidence interval 0.18-0.34; p = .0000; I2 = 37.74%). Additionally, significant difference was observed in emergence time between the two groups (mean difference 2.42, 95% confidence interval 0.37-4.46; p = .021; I2 = 98.40%). Children in the dexmedetomidine group had a significantly lower incidence of postoperative nausea and/or vomiting than those in the control group (odds ratio 0.39, 95% confidence interval 0.24-0.64; p = .0002; I2 = 0.00%). Intranasal dexmedetomidine reduced the incidence of emergence agitation or emergence delirium in pediatric patients after general anesthesia.

Effect of Preoperative Preconditioning of Patients with External Nasal Compression for Different Time Intervals on Emergence Agitation After Nasal Surgeries: A Randomised Controlled Trial

Introduction: Emergence agitation is a commonly experienced phenomenon in the waking period of general anaesthesia, which can adversely affect the recovery of patients in the postoperative period. Patients undergoing nasal surgeries under general anaesthesia, involving postoperative nasal packing, tend to have a higher rate of emergence agitation after extubation. Non pharmacological methods like nasal clips, can be safe and costeffective alternatives to pharmacological agents for controlling emergence agitation. Aim: To evaluate the efficacy of preoperatively applying nasal clips for various durations in patients scheduled for nasal surgeries under general anaesthesia, which require nasal packing in the postoperative period, in reducing emergence agitation after extubation. Materials and Methods: The present randomised controlled trial was conducted at department of Anesthesia, Shrimati Bhikhiben Kanjibhai Shah Medical Institute and Research Centre (SBKS MIRC) in Piparia, Vadodara, Gujarat, India. A total of 75 patients with ASA I and II, aged 18-65 years, posted for elective nasal surgeries under general anaesthesia with postoperative bilateral nasal packing, were randomly divided into three groups. Group A (25 patients) wore nasal clips for 30 minutes preoperatively, Group B (25 patients) wore the clip for 40 minutes preoperatively, and Group C (25 patients) served as the control group without nasal clips. At the time of extubation, the emergence agitation score, ability to cough, time to verbal response, respiratory rate, incidences of desaturation, laryngospasm, or any other complications were observed and noted by an anaesthetist who was unaware of the application of nasal clips preoperatively. All data statistically analysis were performed using Statistical Package for Social Sciences (SPSS) for Windows (version 21.0; IBM Corporation). Results: All three groups were comparable (p&gt;0.05) in terms of demographic profile, type and duration of surgery, and baseline haemodynamic parameters like Heart Rate (HR), Mean Arterial Pressure (MAP), Oxygen Saturation (SpO2 ), and baseline Electrocardiography (ECG). Emergence agitation was significantly lower in Group A and B as compared to Group C (p-value=0.02). On comparing Groups A and B, Group B had a significantly lower incidence of emergence agitation (p-value=0.02). There were two cases of dangerous emergence agitation in the control group and one case in Group A while no cases were reported in Group B. Other parameters at extubation were comparable among all groups. Patient satisfaction was significantly higher in Groups A and B in comparison to Group C. Conclusion: The present study suggests that preoperative preconditioning with nasal clips for 40 minutes in patients undergoing elective nasal surgeries can be a useful and safe method to reduce postoperative emergence agitation.

Çocuklarda Obezitenin Postoperatif Derlenme Ajitasyonuna Etkisi

Objective: Although the factors affecting emergence agitation (EA) have been examined in the literature, the literature evaluating the effect of obesity on postoperative EA in children is limited. In this study, we aimed to evaluate whether obesity has an effect on postoperative EA.&#x0D; Material and method: The medical records of patients aged 2-14 years, with ASA I-II physical status and undergoing elective surgery were reviewed (November 2018 and November 2022). Patients who underwent emergency surgery or who used an anesthetic agent other than sevoflurane for the maintenance of anesthesia were excluded from the study. Patients will be divided into 3 groups according to their body mass index; Group 1; Normal (5th to 85% percentile), Group 2; Overweight (85-95% percentile), Group 3; Obese (95th percentile and above). Emergence agitation was assessed by anesthesiologists using the Watcha scale.&#x0D; Results: 567 patients were included in the study and EA occurred in 115 (20.3%) of them. Of the patients, 428 were considered normal, 64 were overweight and 75 were obese. When demographic data were compared, there was no statistical difference between the groups. EA incidence was statistically higher in Group II (28.1%) and Group III (29.3%)compared to Group I (17.5%) (p=0.006).&#x0D; Conclusion: In conclusion, we are of the opinion that both overweight and obesity increase the incidence of EA in children undergoing general anesthesia, but prospective further studies are also required.

Effects of preoperative nasal spray esketamine on separation anxiety and emergence agitation in pediatric strabismus surgery: A randomized clinical trial

To investigate the effects of preoperative nasal spray esketamine on separation anxiety and postoperative emergence agitation in pediatric strabismus surgery. Ninety children aged 3 to 6 years who underwent elective strabismus surgery were randomly divided into 3 groups that received 0.5 mg/kg (group S1), 1 mg/kg of esketamine (group S2), and the same volume of normal saline (group C) by nasal spray 10 minutes before surgery. The observation indicators of this test include the Ramsay sedation score, separation anxiety score, mask induction score, and the incidences of postoperative emergence agitation. Patient's heart rate, blood oxygen, post anesthesia care unit stay time, and any adverse events were recorded. The Ramsay sedation score was significantly lower in group C than those in groups S1 and S2 (P < .001). The separation anxiety scores and the mask induction scores were significantly higher in group C than those in groups S1 and S2 (P < .001). The incidences of emergence agitation in groups S1 and S2 were significantly lower than that in C group (P < .001). No obvious clinical complication was observed. Preoperative nasal spray esketamine reduced the preoperative separation anxiety and decrease emergence agitation in pediatric strabismus surgery.

A Review of Current Literature of Interest to the Office-Based Anesthesiologist.

A Review of Current Literature of Interest to the Office-Based Anesthesiologist.

Efficacy and safety of the combination of propofol and S(+)-ketamine for procedural sedation in pediatric patients undergoing totally implantable venous access port implantation: A prospective randomized controlled study.

BackgroundTotally implantable venous access port (TIVAP) implantation is usually performed under general anesthesia with endotracheal intubation in children. Procedural sedation without endotracheal intubation has been applied to minor pediatric surgeries like central venous catheter insertion. To explore a more efficient and less invasive anesthesia mode to implant TIVAPs for children, we aimed to evaluate the efficacy and safety of procedural sedation using propofol and S(+)-ketamine compared with general anesthesia.MethodsSixty-six patients aged 6 months to 10 years undergoing TIVAP implantation were randomly allocated to two groups. Patients under procedural sedation [S(+)-ketamine-propofol (sketofol) group] were given target-controlled infusion of propofol 4 μg/ml using the Paedfusor model and S(+)-ketamine 0.5 mg/kg as induction, and had target-controlled infusion of propofol 3–4 μg/ml as maintenance. Patients in sketofol group received medium-flow oxygen inhalation through facemasks during surgery. Patients under general anesthesia (control group) were given propofol 2 mg/kg, cisatracurium 0.2 mg/kg, fentanyl 3 μg/kg as induction, and sevoflurane 0.8 minimum alveolar concentration as maintenance after endotracheal intubation. Primary outcome was the postoperative emergence agitation evaluated 5 min after awakening.ResultsPostoperative emergence agitation evaluated 5 min after awakening was lower in sketofol group versus control group [1.0 (0.5, 1.0) vs. 3.0 (2.0, 4.0); median difference (95% CI): 2.0 (1.0, 2.0); P < 0.001]. Time to awakening was significantly lower in sketofol group versus control group [15.0 (5.0, 23.0) vs. 26.0 (20.5, 37.5); median difference (95% CI): 11.0 (7.0, 19.0); P < 0.001], as well as time to discharge from post anesthesia care unit [35.0 (24.0, 45.0) vs. 45.0 (37.5, 59.5); median difference (95% CI): 10.0 (10.0, 23.0); P < 0.001]. Postoperative complications or adverse events were not reported in sketofol group.ConclusionsCompared to general anesthesia with endotracheal intubation, procedural sedation using propofol and S(+)-ketamine improves the postoperative emergence agitation right after the recovery of consciousness, and has advantage in shortening anesthetic recovery time for pediatric patients undergoing TIVAP implantation.

Urinary Aromatic Amino Acid Metabolites Associated With Postoperative Emergence Agitation in Paediatric Patients After General Anaesthesia: Urine Metabolomics Study.

Background: Emergence agitation (EA) is very common in paediatric patients during recovery from general anaesthesia, but underlying mechanisms remain unknown. This prospective study was designed to profile preoperative urine metabolites and identify potential biomarkers that can predict the occurrence of EA. Methods: A total of 224 patients were screened for recruitment; of those, preoperative morning urine samples from 33 paediatric patients with EA and 33 non-EA gender- and age-matched patients after being given sevoflurane general anaesthesia were analysed by ultra-high-performance liquid chromatography (UHPLC) coupled with a Q Exactive Plus mass spectrometer. Univariate analysis and orthogonal projection to latent structures squares-discriminant analysis (OPLS-DA) were used to analyse these metabolites. The least absolute shrinkage and selection operator (LASSO) regression was used to identify predictive variables. The predictive model was evaluated through the receiver operating characteristic (ROC) analysis and then further assessed with 10-fold cross-validation. Results: Seventy-seven patients completed the study, of which 33 (42.9%) patients developed EA. EA and non-EA patients had many differences in preoperative urine metabolic profiling. Sixteen metabolites including nine aromatic amino acid metabolites, acylcarnitines, pyridoxamine, porphobilinogen, 7-methylxanthine, and 5′-methylthioadenosine were found associated with an increased risk of EA, and they all exhibited higher levels in the EA group than in the non-EA group. The main metabolic pathways involved in these metabolic changes included phenylalanine, tyrosine and tryptophan metabolisms. Among these potential biomarkers, L-tyrosine had the best predictive value with an odds ratio (OR) (95% CI) of 5.27 (2.20–12.63) and the AUC value of 0.81 (0.70–0.91) and was robust with internal 10-fold cross-validation. Conclusion: Urinary aromatic amino acid metabolites are closely associated with EA in paediatric patients, and further validation with larger cohorts and mechanistic studies is needed. Clinical Trial Registration: clinicaltrials.gov, identifier NCT04807998

The effects of remifentanil-propofol combined with dexmedetomidine on cognitive dysfunction in elderly patients after ureteroscopic holmium laser lithotripsy: a double-blind randomized controlled trial

BackgroundA clinical study indicated that infusion of dexmedetomidine without a loading dose administered intraoperatively provided a smooth and hemodynamically stable emergence and improved the quality of recovery with fewer postoperative side effects and reduced analgesic requirements. The objective was to determine whether administering remifentanil-propofol combined with dexmedetomidine during general anesthesia would decrease the incidence and severity of postoperative emergence agitation, anxiety, and depression without affecting cognitive dysfunction in elderly patients.MethodsA total of 120 elderly patients scheduled for ureteroscopic holmium laser lithotripsy were randomly allocated to the PR group and administered normal saline, and the PRD group was administered dexmedetomidine 0.4 μg kg−1 h−1 intravenously after the induction of anesthesia and stopped 30 min before the end of surgery. The primary outcome was the Mini-Mental State Examination score. The secondary outcomes were the Richmond Agitation Sedation, the State-Trait Anxiety Inventory, and the Zung Self-Rating Depression Scale scores; the memory span for Arabic numerals; the duration of surgery; and the time to spontaneous respiration, recovery, and extubation.ResultsThe MMSE scores were lower at T1–2 in the two groups (P < 0.001). The dosage of propofol and remifentanil decreased more significantly in the PRD group than in the PR group (P < 0.001). Both the RASS scores and the incidence of emergence agitation (EA) in the PRD group were significantly lower than those in the PR group at t1–3 (P < 0.001). Compared to the PR group, the ZSDS scores and STAI scores at T1–2 were lower in the PRD group (P < 0.005). The number of the Arabic numbers that were accurately recalled from memory was lower at T2 in the PR group than in the PRD group (P < 0.001).ConclusionDexmedetomidine administration has no influence on postoperative cognitive dysfunction but could reduce both the dosage of remifentanil and propofol needed during ureteroscopic holmium laser lithotripsy and the incidence and severity of postoperative emergence agitation, anxiety, and depression in elderly patients.Trial registrationChinese Clinical Trial Registry ChiCTR1900021254. Registered on 3 February 2019

Comparison of intranasal and nebulized dexmedetomidine for premedication in pediatric patients: A non-inferiority randomized controlled trial.

Dexmedetomidine is a highly selective α-2 adrenoreceptor agonist and has been found to be an effective premedication agent when administered via the intranasal route. We aimed to compare the efficacy of dexmedetomidine premedication administered via intranasal route and through nebulization in pediatric patients. This non-inferiority randomized controlled trial was conducted after getting approval from institutes ethics committee and informed written parental consent. Sixty-four children aged 2-8 years scheduled for elective surgery under general anesthesia were enrolled and were divided into two groups. Group I (Intranasal, n = 33) received 2 mcg/kg dexmedetomidine via intranasal route and group N (Nebulized, n = 31) received 2 mcg/kg dexmedetomidine through nebulization. The primary outcome was number of patients with satisfactory sedation 30 minutes after premedication at separation from parent. The secondary outcome included ease of medication acceptance, anxiety at parental separation, acceptance of anesthesia mask, perioperative hemodynamics, emergence agitation during recovery and adverse effects. Data collected was analyzed using Chi-square test, Student "t" test and Mann-Whitney U test with the help of SPSS 22. A one tailed P value < 0.025 was considered significant. Demographic profile was comparable between groups. On arrival in OR 27 (81.8%) patients in group I and 21 (67.7%) patients in group N had satisfactory sedation score (P = 0.19). The median (IQR) sedation score was comparable between group I and group N (P = 0.057). Patients in Group I showed significantly better medication and mask acceptance scores (P < 0.0001, P = 0.001 respectively), parental separation anxiety score (P < 0.0001) and emergence agitation score (P = 0.001). There were no significant differences in hemodynamic parameters and adverse effects between the groups. Although nebulized dexmedetomidine is non-inferior to intranasal dexmedetomidine in providing desired level of sedation but intranasal administration had better acceptance of medication and anesthesia mask with lesser anxiety at parental separation and postoperative emergence agitation.

The Comparison of the Efficacy of Early versus Late Administration of Dexmedetomidine on Postoperative Emergence Agitation in Children Undergoing Oral Surgeries: A Randomized Clinical Trial.

Background: Emergence Agitation (EA) is a dissociated state of consciousness characterized by irritability, uncompromising stance, and inconsolability. The etiology of EA is not completely understood. Dexmedetomidine is a highly selective α2-adrenoreceptor agonist with sedative and analgesic properties, which has been used to reduce the incidence of EA. We aimed to assess the efficacy of early versus late administration of dexmedetomidine on EA in children undergoing oral surgery.Methods: A randomized, parallel, double-blind clinical trial was conducted at Mofid Children’s Hospital affiliated to Shahid Beheshti University of Medical Sciences (Tehran, Iran) from November 2016 to March 2017. A total of 81 children, who underwent adenotonsillectomy or cleft palate repair surgery were enrolled in the study. Based on simple randomization, the children were assigned to two groups, namely early (group A, n=41) and late (group B, n=40) administration of dexmedetomidine. Intra-operative and postoperative hemodynamic variables, extubation time, post-anesthesia care unit (PACU) length of stay, and the scores on Ramsay sedation scale and FLACC pain scale were measured and compared. The data were analyzed using SPSS software (version 20.0), and P<0.05 were considered statistically significant.Results: The mean FLACC score was lower in the late group than in the early group (2.0±1.5 vs. 4.2±1.6, P<0.001). The mean Ramsay sedation score was higher in the late group than in the early group (3.5±1.4 vs. 1.8±0.8, P<0.001).Conclusion: Late administration of dexmedetomidine 1 µg/kg reduced the incidence of EA and PACU length of stay and improved postoperative pain management.Trial registration number: IRCT 2016122031497N1.

Emergence agitation in paediatric day case surgery

Postoperative emergence agitation remains a significant challenge in paediatric anaesthesia. Although short-lived, it may cause harm to the patient and negative experiences for all. Differentiating agitation, delirium and pain is difficult. Electroencephalography allows precise titration of anaesthetic depth, and heart rate variability monitoring permits immediate intervention regarding nociception and pain. We examined if one of these measures could be used to reduce postoperative agitation in an unselected paediatric day surgical population. The primary outcome was postoperative agitation with a Richmond Agitation-Sedation Scale greater than 0. Secondary outcomes were: length of stay, postoperative nausea and vomiting, fentanyl and propofol consumption, pain scores and use of postoperative analgesics. A randomised, single-blinded study constituting children aged 1 to 6 years, undergoing minor general day surgical procedures. Paediatric day surgical department 29th March 2019 to 12th June 2020. Ninety-eight children (ASA 1 or 2) were enrolled, and 93 children were included in the final analysis. Children received standard monitoring (n=31), standard monitoring plus either Narcotrend (n=31), or Anaesthesia Nociception Index monitoring (n=31). Sevoflurane or fentanyl was titrated immediately according to monitor thresholds. Kaplan-Meier analysis yielded a statistically significant difference between the groups (P = 0.016) with the lowest agitation levels in the Anaesthesia Nociception Index group, intermediate levels in the control group and the highest agitation levels in the Narcotrend monitored group. Intergroup pairwise comparison however, showed no difference. The Anaesthesia Nocioception Index group received slightly more fentanyl (P = 0.277). The control group patients had the highest pain scores despite receiving more caudal blocks and the Narcotrend group had more sevoflurane adjustments. Other secondary outcomes were comparable. Children in the Anaesthesia Nociception Index group were the least agitated with the highest fentanyl doses, without increasing the length of stay in the PACU or postoperative nausea and vomiting. The study was registered in REDCap online trial database 1/11/2018 trial registration nr. OP720. https://open.rsyd.dk/OpenProjects/openProject.jsp?openNo=720&lang=da.

Effect of Different Anesthesia Methods on Emergence Agitation and Related Complications in Postoperative Patients with Osteosarcoma.

Purpose To explore the effect of different anesthesia methods on emergence agitation (EA) and related complications in postoperative patients with osteosarcoma. Methods According to the order of admission, 115 patients requiring osteosarcoma surgery treated in our hospital from January 2018 to December 2020 were selected as the research object and randomly divided into the control group (n = 57, accepted the general anesthesia with tracheal intubation) and the experimental group (n = 58, accepted the combined spinal-epidural anesthesia) to compare their anesthesia effect, incidence rates of agitation and complications, and other indexes. Results In terms of the hemodynamic indexes (MAP, HR, and CVP values), both groups had lower ones at T1 than at T0, but the decline of the experimental group was generally lesser than that of the control group; at T2, no statistical difference was shown within the experimental group's indexes when comparing with those at T1, but the control group obtained a significant increase; at T3 and T4, both groups had their hemodynamic indexes increased, but such increase within the experimental group showed no statistical difference when comparing with those at T0, while the control group achieved obviously higher values at T4 than at T0 (before the anesthesia); and the between-group difference in the hemodynamic indexes at T1 and T4 was significant. Compared with the control group, the experimental group achieved better VAS scores and anesthesia indexes and lower incidence rates of EA and complications such as the hypoxemia, cardiovascular response, delayed recovery, and headache. In addition, the differences in the incidence rates of hypotension and cognitive dysfunction between the two groups were not statistically significant. Conclusion When comparing with tracheal intubation general anesthesia, the combined spinal-epidural anesthesia has a better effect in osteosarcoma surgery, with less hemodynamics influence on patients, reduced postoperative pain and stress reaction, and lowered incidence rates of postoperative EA and complications, which is worthy of wide application in clinical treatment.

The effects of intraoperative magnesium sulfate administration on emergence agitation and delirium in pediatric patients: A systematic review and meta-analysis of randomized controlled trials.

The role of intraoperative magnesium for the prevention of emergence agitation or delirium is unclear as there have been conflicting results reported by several randomized controlled trials. The aim of this study was to investigate the effect of magnesium sulfate on emergence agitation or emergence delirium in pediatric patients. Electronic databases, including PubMed, EMBASE, CENTRAL, CINAHL, Scopus, and Web of Science, were searched to identify studies which evaluated the effects of magnesium on postoperative emergence agitation or emergence delirium. The primary outcome was the incidence of emergence agitation or emergence delirium during the post-anesthesia stay. The secondary outcome was the agitation or delirium score upon admission to the post-anesthesia care unit. We estimated the odds ratio and standardized mean difference using a random-effect model. A total of 712 pediatric patients from 10 randomized controlled trials were included in the final analysis. The incidence of emergence agitation or emergence delirium was 29.7% in the magnesium group and 50.5% in the control group. The pooled effect size revealed that the administration of magnesium sulfate significantly reduced the incidence of postoperative emergence agitation or emergence delirium in pediatric patients undergoing surgery with general anesthesia (Odds ratio, 0.31; 95% confidence interval, 0.15 to 0.64; p=.002). Additionally, children in the magnesium group reported significantly lower agitation or delirium scores than those in the control group (standardized mean difference, -0.70; 95% confidence interval, -1.15 to -0.24; p=.003). The administration of magnesium sulfate reduced the incidence and severity of emergence agitation or emergence delirium in pediatric patients after the use of general anesthesia during surgery.

Perioperative dexmedetomidine reduces emergence agitation without increasing the oculocardiac reflex in children: A systematic review and meta-analysis.

Background:Intravenous dexmedetomidine (DEX) has been used to prevent emergence agitation (EA) in children. The aim of this meta-analysis was to evaluate whether DEX decreases EA incidence without augmenting oculocardiac reflex (OCR) in pediatric patients undergoing strabismus surgery.Methods:We searched PubMed, EMBASE, Chinese National Knowledge Infrastructure (CNKI), Wan Fang, and the Cochrane Library to collect the randomized controlled trials (RCTs) investigating the effects of intraoperative DEX in children undergoing strabismus surgery from inception to October 2019. Postoperative Pediatric Agitation and Emergence Delirium (PAED) score, postoperative EA, extubation or laryngeal mask airway (LMA) removal time, postanesthetic care unit (PACU) stay time, OCR, and postoperative vomiting (POV) were evaluated.Results:11 RCTs including 801 patients were included in this study. Compared with control group, intravenous DEX significantly reduced postoperative PAED score (WMD, 3.05; 95% CI: -3.82 to -2.27, P = .017) and incidences of postoperative EA 69% (RR, 0.31; 95% CI: 0.17 to 0.55, P < .00) and POV (RR, 0.28; 95% CI: 0.13 to 0.61, P = .001). Furthermore, the use of DEX significantly delayed extubation or LMA removal time (WMD, 2.11; 95% CI: 0.25 to 3.97, P < .001). No significant difference was found in the incidence of ORC and PACU stay time.Conclusion:Intravenous DEX reduced the incidences of EA without increasing OCR in pediatric patients undergoing strabismus surgery. Meanwhile, DEX infusion decreased the incidence of POV in children.

A novel balanced anesthesia shortens time to emergence in patients undergoing modified radical mastectomy: a randomized prospective trial

In balanced anesthesia, protocol during the last 30 min is very important to guarantee rapid emergence and smooth extubation. In clinical practice, sevoflurane and propofol are often used in combination to achieve a better anesthetic effect and less adverse reaction. Approximately 30 min before surgical completion, sevoflurane inhalation is often discontinued and propofol is adjusted to keep sufficient depth of anesthesia. However, propofol-based anesthesia may delay time to emergence due to its unpredictable interindividual variability. In contrast, sevoflurane can be rapidly excreted unchanged from the respiratory tract, and more importantly, with minimal variability. This study aimed to investigate the effect of a novel balanced anesthesia protocol, that is propofol-based intravenous induction, propofol-sevoflurane combined maintenance, and total sevoflurane inhalation during the last 30 min of the surgery, on the time to emergence/extubation. In our study, a total of 100 female patients undergoing modified radical mastectomy were enrolled. All patients received propofol-based intravenous anesthesia for induction followed by propofolsevoflurane combined maintenance. Approximately 30 min before the end of surgery, sevoflurane was continually inhaled without propofol infusion in group Sev (n=50), while propofol was only infused in group Pro (n=50). The primary outcome was the time to emergence/extubation. The second outcomes included time to respiratory recovery, and duration of post-anesthesia care unit (PACU) stay. The hemodynamic parameters and incidences of postoperative adverse events such as hypoxemia, nausea, vomiting, dizziness, and emergence agitation (EA) were also assessed. The time to emergence/extubation in group Sev was shorter than that in group Pro (12.74±4.31 vs. 17.74±4.27 min, P<0.0001). Similarly, time to respiratory recovery, and duration of PACU stay were significantly shortened in group Sev (all P<0.0001). Most of the patients in group Sev were extubated under a totally waking state of consciousness. The hemodynamic parameters and incidences of postoperative hypoxemia, nausea, vomiting, dizziness, and EA during the PACU stay were similar between the two groups. In patients undergoing modified radical mastectomy, this novel balanced anesthesia method could shorten the time to emergence/extubation and better waking state without increasing the incidence of adverse events.

Role of dexmedetomidine infusion on post operative emergence agitation and quality of recovery after nasal surgery: A prospective randomized double blind controlled trial

Study aims to reduce the emergence agitation post operatively and improve the quality of recovery after nasal surgery which in-turn reduce the hospital stay and in-hospital mortality.Prospective, randomized, double blind studyAfter institutional review board approval and informed written consent from patients, seventy patients undergoing nasal surgery were selected &amp; randomized into two groups. The dexmedetomidine group (Group D, n=35) received dexmedetomidine infusion @ rate of 0.4 μg/kg/hr from induction of anaesthesia until extubation, while the control group (Group C, n=35) received volume-matched normal saline infusion as placebo. Induction of anaesthesia was done using Propofol (2 mg/kg) and fentanyl (1 μg/kg). Maintainance of anaesthesia was done using inhalational sevoflurane &amp; inj.vecuronium. The incidence of agitation, haemodynamic parameters, and recovery characteristics were evaluated during emergence. Patients were assessed for quality of recovery using a 15-item quality-of-recovery questionnaire (QoR-15) 24 hr after surgery.Data were analysed by using unpaired t -test, Chi-square test.The incidence of agitation was lower in group D than group C(22.8% vs 51%). HR and MAP were comparable in group D &amp; group C. Extubation time &amp; grade of cough during emergence were similar between the groups. QoR-15 score was significantly more in group D compare to group C at 24 hour after surgery.Intraoperative infusion of dexmedetomidine decreased incidence of agitation &amp; improved quality of recovery after nasal surgery.