Use Of Laryngeal Mask Airway Research Articles

Airway management may influence postoperative ventilation need in preterm infantsafter laser eye treatment.

Retinopathy of prematurity is treated with laser photocoagulation under general anaesthesia with intubation using endotracheal tube (ETT), which carries a risk for postoperative mechanical ventilation (MV). Laryngeal mask airway (LMA) may provide a safe alternative. We assessed the need for postoperative MV in preterm infants who received LMA versus ETT. In this single-centre, retrospective cohort study, preterm infants who underwent laser photocoagulation between 2014-2021 were enroled. For airway management, patients received either LMA (n = 224) or ETT (n = 47). The outcome was the rate of postoperative MV. Patients' age were 37 [35;39] weeks of postmenstrual age, median bodyweight of Group LMA was higher than Group ETT's (2110 [1800;2780] g versus 1350 [1230;1610] g, respectively, p < 0.0001). After laser photocoagulation, 8% of Group LMA and 74% of Group ETT left the operating theatre requiring MV. Multiple logistic regression revealed that the use of LMA and every 100 g increase in bodyweight significantly decreased the odds of mechanical ventilation (OR 0.21 [95% CI 0.07-0.60], and 0.73 [95% CI 0.63-0.84], respectively). Propensity score matching confirmed that LMA decreased the odds of postoperative MV (OR 0.30 [95% CI 0.11-0.70]). The use of LMA is associated with a reduced need for postoperative MV. Using laryngeal mask airway instead of endotracheal tube for airway management in preterm infants undergoing general anaesthesia for laser photocoagulation for treating retinopathy of prematurity could significantly decrease the postoperative need for mechanical ventilation. According to our current understanding, this has been the largest study investigating the effect of laryngeal mask airway during general anaesthesia in preterm infants. Our study suggests that the use of laryngeal mask airway is a viable alternative to intubation in the vulnerable population of preterm infants in need of laser treatment.

Laryngeal Mask Airway in Neonatal Resuscitation: A Survey of the Union of European Neonatal and Perinatal Societies

Introduction: Laryngeal mask airway (LMA) use in neonatal resuscitation is limited despite existing evidence and recommendations. This survey investigated the knowledge and experience of healthcare providers on the use of the LMA and explored barriers and solutions for implementation. Methods: This online, cross-sectional survey on LMA in neonatal resuscitation involved healthcare professionals of the Union of European Neonatal and Perinatal Societies (UENPS). Results: A total of 858 healthcare professionals from 42 countries participated in the survey. Only 6% took part in an LMA-specific course. Some delivery rooms were not equipped with LMA (26.1%). LMA was mainly considered after the failure of a face mask (FM) or endotracheal tube (ET), while the first choice was limited to neonates with upper airway malformations. LMA and FM were considered easier to position but less effective than ET, while LMA was considered less invasive than ET but more invasive than FM. Participants felt less competent and experienced with LMA than FM and ET. The lack of confidence in LMA was perceived as the main barrier to its implementation in neonatal resuscitation. More training, supervision, and device availability in delivery wards were suggested as possible actions to overcome those barriers. Conclusion: Our survey confirms previous findings on limited knowledge, experience, and confidence with LMA, which is usually considered an option after the failure of FM/ET. Our findings highlight the need for increasing the availability of LMA in delivery wards. Moreover, increasing LMA training and having an LMA expert supervisor during clinical practice may improve the implementation of LMA use in neonatal clinical practice.

Removal of airway foreign body using flexible bronchoscopy in children

BackgroundFlexible bronchoscopy is mainly used to diagnose airway foreign bodies (AFBs). Due to advances in pediatric anesthesia, many teams have considered the extraction of AFBs by flexible bronchoscopy. We aimed to assess the success of flexible bronchoscopy in AFB removal in children. Patients and methodsWe analyzed retrospectively the data of children admitted for AFB aspiration in the Pediatric Respiratory Diseases Department B of Abderrahmane Mami Hospital in Tunisia between January 2012 and December 2022. AFB removal was performed by flexible bronchoscopy through the use of a laryngeal mask airway (LMA) or intubation. ResultsOf the 105 children included, AFB was removed by flexible bronchoscopy in 99 children (94.3 %). The mean age of the children was 32 months (9–150 months) with a sex ratio of 2:3. The foreign body was organic in 67 % of cases. Overall, 37 children underwent rigid bronchoscopy first (35.2 %). Flexible bronchoscopy was performed through the LMA in 77 cases (73 %) and after intubation in the other cases. Thoracic surgery was needed in two cases (1.9 %). Four infants expectorated the AFB after the procedure (3.8 %). Only two children developed laryngeal edema with transient oxygen desaturation. ConclusionAFB removal using a flexible bronchoscope is an efficient and safe procedure when performed by an experienced team. The recent use of LMA has facilitated the use of a larger bronchofiberscope and the insertion of multiple tools that can reach distal airways.

The Safety of the Laryngeal Mask Airway in Adenotonsillectomy: A Systematic Review and Meta-Analysis.

Adenotonsillectomy is one of the most common surgical procedures worldwide. The current standard for securing the airway in patients undergoing adenotonsillectomy is endotracheal tube (ETT) intubation. Several studies have investigated the use of the laryngeal mask airway (LMA) in this procedure. We conducted a systematic review and meta-analysis to compare the safety and efficacy of the LMA versus ETT in adenotonsillectomy. Databases were searched from inception to 2022 for randomized controlled trials and comparative studies. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. The primary outcome is the rate of perioperative respiratory adverse events (PRAEs). Secondary outcomes included the rate of conversion to ETT, desaturations, nausea/vomiting, and surgical time. A subgroup analysis, risk of bias, publication bias, and Grading of Recommendations Assessment, Development, and Evaluation (GRADE) assessments were also performed. Twelve studies were included in the analysis (4176 patients). The mean overall conversion to ETT was 8.36% [95% confidence interval (CI) = 8.17, 8.54], and for the pediatric group 8.27% (95% CI = 8.08, 8.47). The mean rate of conversion to ETT secondary to complications was 2.89% (95% CI = 2.76, 3.03) while the rest was from poor surgical access. Overall, there was no significant difference in PRAEs [odds ratio (OR) 1.16, 95% CI = 0.60, 2.22], desaturations (OR 0.79, 95% CI = 0.38, 1.64), or minor complications (OR 0.89, 95% CI = 0.50, 1.55). The use of LMA yielded significantly shorter operative time (mean difference -4.38 minutes, 95% CI = -8.28, -0.49) and emergence time (mean difference -4.15 minutes, 95% CI = -5.63, -2.67). For adenotonsillectomy surgery, LMA is a safe alternative to ETT and requires less operative time. Careful patient selection and judgment of the surgeon and anesthesiologist are necessary, especially given the 8% conversion to ETT rate.

Blockbuster Laryngeal Mask Airway as a Rescue Device in Paediatric Patient with Retrognathia Posted for Microtia Reconstruction Surgery: A Case Report

The first and second branchial arches, along with the first branchial cleft, contribute to the development of ear and mandible. Children with microtia can have retrognathia or micrognathia and have challenging airway management. Managing the airway in these patients presents a significant challenge for anaesthesiologists as they have the potential for upper airway obstruction and challenging tracheal intubation because of facial deformities. Although awake fiberoptic intubation is a well-accepted method for handling difficult intubations, it can be uncomfortable and stressful for paediatric patients. Moreover, it demands expertise and is unsuitable for patients unwilling to undergo awake intubation. This case report highlights the use of the blockbuster Laryngeal Mask Airway (LMA) in an 11-year-old retrognathic child with microtia with anterior larynx scheduled for auricular reconstruction surgery. There was a failure to secure the airway with multiple attempts at traditional intubation and the supraglottic airway device i-gel, as the child had an anterior larynx and Cormack Lehane (CL) grading of 4 on direct laryngoscopy. The blockbuster LMA, distinguished by its innovative design facilitating both ventilation and intubation through an integrated channel, emerged as a pivotal alternative. The supraglottic device is not the technique of choice, but it can definitely be an alternative and could be life-saving in situations where fiberoptic bronchoscopy and tracheostomy are not available.

Laryngeal Mask Airway as an Appropriate Option in Pediatric Laparoscopic Inguinal Hernia Repair: A Systematic Review and Meta-Analysis

ObjectiveTo elucidate the safety and effectiveness of laryngeal mask airway (LMA) use in pediatric patients undergoing laparoscopic inguinal hernia repair. MethodsStudies were searched on the PubMed, EMBASE, and Cochrane Library databases. Only randomized controlled trials (RCTs) were included. Primary outcomes were major perioperative respiratory adverse events (PRAEs), namely laryngospasm, bronchospasm, desaturation, and aspiration. Secondary outcomes were minor PRAEs, anesthesia time, and recovery time. A meta-analysis was performed to calculate risk ratios (RR), weighted mean difference (WMD), and 95 % confidence intervals (CI) by using random effects models. ResultsIn total, 5 RCTs comprising 402 patients were included. Regarding major PRAEs, laryngospasm (RR: 0.43, 95 % CI: 0.12 to 1.47; p = 0.18), bronchospasm, and aspiration all demonstrated no difference between the laryngeal and endotracheal groups. Desaturation exhibited a trend, but this trend was not sufficiently supported with statistical evidence (p = 0.09). For minor PRAEs, fewer patients experienced incidence of cough after laryngeal mask use (RR: 0.27, 95 % CI: 0.11 to 0.67; p = 0.005). Other PRAE, namely hoarseness (p = 0.06), sore throat (RR: 1.88, 95 % CI: 0.76 to 4.66; p = 0.18), and stridor, did not differ between the 2 groups. Additionally, both anesthesia time (WMD: −6.88 min, 95 % CI: −11.88 to −1.89; p < 0.00001) and recovery time (WMD: −4.85 min, 95 % CI: −6.51 to −3.19; p < 0.00001) were shortened in the LMA group. ConclusionLMA used in pediatric laparoscopic inguinal hernia repair demonstrated no greater safety risks than endotracheal tube intubation did. Thus, anesthesiologists may shift from conventional endotracheal tube use to LMA use. Moreover, anesthesia and recovery times were shortened in the LMA group, which resulted in more efficient use of the operating room. Because of these benefits, LMA could be an appropriate option for pediatric patients undergoing laparoscopic inguinal hernia repair. Level of Evidence:Treatment Study, LEVEL III

Laryngeal mask airway in neonatal stabilization and transport: a retrospective study

Laryngeal mask airway (LMA) may be considered by health caregivers of level I–II hospitals for neonatal resuscitation and stabilization before and during interhospital care, but literature provides little information on this aspect. This study reviewed the use of LMA during stabilization and transport in a large series of neonates. This is a retrospective study evaluating the use of LMA in infants who underwent emergency transport by the Eastern Veneto Neonatal Emergency Transport Service between January 2003 and December 2021. All data were obtained from transport registry, transport forms, and hospital charts. In total, 64/3252 transferred neonates (2%) received positive pressure ventilation with an LMA, with increasing trend over time (p = 0.001). Most of these neonates were transferred after birth (97%), due to a respiratory or neurologic disease (95%). LMA was used before the transport (n = 60), during the transport (n = 1), or both (n = 3). No device-related adverse effects were recorded. Sixty-one neonates (95%) survived and were discharged/transferred from the receiving center. Conclusion: In a large series of transferred neonates, LMA use during stabilization and transport was rare but increasing over time, and showed some heterogeneity among referring centers. In our series, LMA was safe and lifesaving in “cannot intubate, cannot oxygenate” situations. Future prospective, multicenter research may provide detailed insights on LMA use in neonates needing postnatal transport.What is Known:• A supraglottic airway device may be used as an alternative to face mask and endotracheal tube during neonatal resuscitation.• The laryngeal mask may be considered by health caregivers of low-level hospitals with limited exposure on airway management, but literature provides little information on this aspect.What is New:• In a large series of transferred neonates, laryngeal mask use was rare but increasing over time, and showed some heterogeneity among referring centers.• The laryngeal mask was safe and lifesaving in “cannot intubate, cannot oxygenate” situations.

Laryngeal Mask Airway Versus Endotracheal Intubation for Airway Management During Percutaneous Dilatational Tracheostomy

Aim: Tracheostomy is a common procedure performed surgically or percutaneously due to prolonged intubation. During the procedure, airway safety can be ensured using a laryngeal mask airway (LMA) or an endotracheal tube (ETT). The aim of this study was to investigate the complications associated with the use of LMA and ETT during the tracheostomy procedure, operative time, and changes in blood gas parameters.&#x0D; Materials and Methods: This study included patients admitted to the Intensive Care Units of Burdur State Hospital between 2019 and 2023. A total of 78 patients were divided into two groups: ETT (n=39) and LMA (n=39). Procedure-related complications, operative time, blood gas data were recorded from the patient files.&#x0D; Results: There was no statistically significant difference between the LMA and ETT groups in terms of complications. There was also no statistically significant difference in postoperative values of PaCO2 between the groups (p

Comparison of laryngeal mask airway and endotracheal tube using percutaneous dilatational tracheostomy

Aim: The study’s objective was to determine whether laryngeal mask airway (LMA) use in percutaneous tracheostomy applications is superior compared to classic endotracheal tube (ETT) use. Methods: The study comprised patients who had percutaneous tracheostomy at Adıyaman Training and Research Hospital between 2013 and 2018. The patients were separated into two groups those who used ETT for airway management (group E) and those who used LMA instead of ETT (group L) during PT application. 4 patients were excluded from the study due to the lack of data from the 170 patient files obtained. The diagnosis for intensive care unit admission, age, gender, length of hospital stay, length of the procedure, number of attempts, complications, and mortality were compared between the two groups. Results: Of the 166 patients involved in the study, 76 were female and 90 were male. All patients underwent successful tracheostomy procedures, but 20 patients had minimal bleeding, and 21 patients had a second attempt. The duration of the tracheostomy procedure was found to be significantly shorter in group L (p&amp;lt;0.05). In comparison to group E, group L had a significantly longer hospital stay (p&amp;lt;0.05). Conclusion: It was considered that the use of LMA in percutaneous dilatational tracheostomy applications reduces the duration of the surgery. However, there is no significant difference between the use of ETT and LMA in terms of procedural success and complication rates. Keywords: Airway management, laryngeal mask airway, tracheostomy

Time to Effective Ventilation in Neonatal Manikins with a Supraglottic Airway vs. a Facemask: A Randomized Controlled Trial

(1) Background: Timely and effective positive pressure ventilation (PPV) is the most important component of neonatal resuscitation. Emerging data supports the use of supraglottic airways such as the laryngeal mask airway (LMA) as a first-line interface for PPV during neonatal resuscitation. LMA use reduces the need for intubation compared to facemask use in systematic reviews, but there is no difference in the incidence of death or moderate-to-severe hypoxic ischemic encephalopathy (HIE). Time to effective ventilation during simulation with manikin models by providers with limited neonatal airway experience may add to the current evidence that compares the LMA to the neonatal facemask as the first-line ventilation interface during neonatal resuscitation.; (2) Methods: Thirty-two pre-clinical medical students were recruited and randomized to learning and performing ventilation with either the LMA or neonatal facemask on a neonatal manikin. Tidal volume was measured by breath-by-breath analysis to assess adequacy and consistency of PPV in 10 consecutive breaths. Perceived confidence was measured by pre- and post-intervention surveys that utilized a Likert scale from 1 to 5.; (3) Results: Median time to achieve effective ventilation was shorter with a neonatal facemask compared to the LMA (43 (30, 112) seconds vs. 82 (61, 264) seconds, p < 0.01). Participants reported higher perceived confidence post-intervention with use of a facemask when compared to use of the LMA (5 (4, 5) vs. 4 (4, 4), p = 0.03).; (4) Conclusions: Pre-clinical medical students demonstrated a shorter time to effective ventilation and reported higher confidence scores after learning and demonstrating PPV using the facemask when compared to LMA in a neonatal manikin. Further studies are warranted to evaluate the use of supraglottic airways in providers with limited experience with airway management of neonates, as well as in ways to better promote proficiency and confidence in the use of the LMA.

LARYNGEAL MASK AIRWAY VERSUS ENDOTRACHEAL INTUBATION FOR ADENOIDECTOMY IN OUTPATIENT SURGERY - SINGLE CENTER EXPERIENCE.

Adenoidectomy with or without tonsillectomy remains one of the most routinely performed surgical procedures in children. The duration of the procedure is usually less than half an hour and is done in a day surgery setting. Airway management for adenoidectomy can be especially challenging as the airway is shared between the surgeon and the anesthesiologist. The gold standard for airway management is an endotracheal tube (ETT), even though there has been an increase in the use of laryngeal mask airway (LMA) over the past decade. This retrospective study investigated patient data collected over a 4-year period (2016 to 2020). Data included 210 cases in a day surgery setting. We analyzed the choice of airway device and use of neuromuscular blockers and analgesics for pain management. The use of LMA was noted in 67.62% while endotracheal intubation was performed in 32.38% of cases. LMA resulted in fewer respiratory complications compared to ETT (p=0.006). The need for neuromuscular blockers was also lower in the LMA group (p=0.01). There was no statistically significant difference in the intraoperative dose of opioid analgesia (p=0.09). Flexible LMA is a satisfactory alternative to endotracheal intubation for outpatient pediatric adenoidectomy.

Use of laryngeal mask for neonatal resuscitation in Brazil: A national survey

BackgroundThe International Liaison Committee on Resuscitation suggests using the laryngeal mask airway (LMA) as an alternative to the face mask for performing positive pressure ventilation (PPV) in the delivery room in newborns ≥34 weeks. Because not much is known about the health professionals’ familiarity in using LMA in Brazil, this study aimed to describe the health professionals’ knowledge and practice of using LMA, who provide neonatal care in the country. MethodsAn online questionnaire containing 29 questions was sent to multi-healthcare professionals from different regions in the country through email and social media groups (WhatsApp®, Instagram®, Facebook®, and LinkedIn®). The participants anonymously answered the questions regarding their knowledge and expertise in using LMA to ventilate newborns in the delivery room. ResultsWe obtained 749 responses from all the regions in Brazil, with 80% from health professionals working in public hospitals. Most respondents were neonatologists (73%) having > 15 years of clinical practice. Among the respondents, 92% recognized the usefulness of LMA for performing PPV in newborns, 59% did not have specific training in LMA insertion, and only 8% reported that they have already used LMA in the delivery room. In 90% of the hospitals, no written protocol was available to use LMA; and in 68% of the hospitals, LMA was not available for immediate use. ConclusionThis nationwide survey showed that most professionals recognize the usefulness of LMA. However, the device is scarcely available and underused in the routine of ventilatory assistance for newborns in delivery rooms in Brazil.

Efficacy of laryngeal mask airway against postoperative pharyngolaryngeal complications following thyroid surgery: a systematic review and meta-analysis of randomized controlled studies

This meta-analysis aimed at investigating the effectiveness of laryngeal mask airway (LMA) against postoperative pharyngolaryngeal complications after thyroidectomy. MEDLINE, Cochrane Library, google scholar, and EMBASE databases were searched from inception through February, 2021, for randomized controlled trials (RCTs) comparing the incidence of pharyngolaryngeal complications following the use of LMA or endotracheal tube (ETT). Pooled results from seven RCTs involving 600 patients showed an association of LMA with a reduced risk of postoperative sore throat (POST) at 24 h [risk ratio (RR) 0.75, p = 0.006, four trials], but not at 1 h and 48 h after thyroidectomy. POST severity and hoarseness risk were lower in the LMA group than the ETT group at 1 h, 24 h, and 48 h (all p < 0.05). Nevertheless, hoarseness severity was lower in the LMA group only at postsurgical 48 h [standardized mean difference = − 0.35, p = 0.008, three trials]. Moreover, the risk of emergence cough was lower in patients using LMA than those receiving ETT (RR = 0.14, p = 0.002, two trials). The two groups did not differ in the severity of dysphagia at postoperative 1 h, 24 h, and 48 h. This meta-analysis showed that LMA may be associated with fewer pharyngolaryngeal complications compared to ETT without airway impacts. The limited number of included studies warrants further research to support our findings.

Difficult Airway Management in Pediatric Patient with Neck Contracture

Background: A specific airway evaluation and physical examination should be performed in all pediatric patients undergoing anesthesia. Pediatric difficult airway problems can occur due to congenital, inflammation, trauma, or malignant disorders. Laryngeal mask airway (LMA) is an alternative breathing device for difficult airway cases. Case: We reported a 5-year-old girl, 12 kg of weight, with a diagnosis of Colli region contracture planned for contracture release. Physical examination revealed glasgow coma scale score 15, with a pulse of 98 beats per minute, a breath rate of 22 times per minute and SpO2 of 98% on the room air. In the airway evaluation, it was found that the lower mouth was pulled down by the contracture tissue, 2-fingers-wide of mouth opening, the mallampati score was difficult to evaluate, there was no obstruction and neck motion was limited due to contractures. In this report, intubation via video laryngoscope was failed due to the severely restricted neck motion caused by the contracture. The use of LMA became an alternative difficult airway management in this patient after failed intubation with a video laryngoscope. Conclusion: Preoperative evaluation for assessing and evaluating difficult airway in pediatric patients greatly determines the success of airway management. The use of airway devices such as LMA is still very helpful in cases of pediatric difficult airway.

Current Practices Supporting Rigid Bronchoscopy-An International Survey.

There are no guidelines for anesthesia or staff support needed during rigid bronchoscopy (RB). Identifying current practice patterns for RB pertinent to anesthesia, multidisciplinary teams, and algorithms of intra and post-procedural care may inform best practice recommendations. Thirty-three-question survey created obtaining practice patterns for RB, disseminated via email to the members of the American Association of Bronchology and Interventional Pulmonology and the American College of Chest Physicians Interventional Chest Diagnostic Procedures Network. One hundred seventy-five clinicians participated. Presence of a dedicated interventional pulmonology (IP) suite correlated with having a dedicated multidisciplinary RB team ( P =0.0001) and predicted higher likelihood of implementing team-based algorithms for managing complications (39.4% vs. 23.5%, P =0.024). A dedicated anesthesiology team was associated with the increased use of high-frequency jet ventilation ( P =0.0033), higher likelihood of laryngeal mask airway use post-RB extubation ( P =0.0249), and perceived lower rates of postprocedural anesthesia adverse effects ( P =0.0170). Although total intravenous anesthesia was the most used technique during RB (94.29%), significant variability in the modes of ventilation and administration of muscle relaxants was reported. Higher comfort levels in performing RB are reported for both anesthesiologists ( P =0.0074) and interventional pulmonologists ( P =0.05) with the presence of dedicated anesthesia and RB supportive teams, respectively. Interventional bronchoscopists value dedicated services supporting RB. Multidisciplinary dedicated RB teams are more likely to implement protocols guiding management of intraprocedural complications. There are no preferred modes of ventilation during RB. These findings may guide future research on RB practices.

A New Approach in Airway Management for Tracheal Resection and Anastomosis: A Single-Center Prospective Study

The evaluation of the use of laryngeal mask airways (LMA) as an alternative form of airway management for surgical tracheal reconstruction. A prospective case series. At a single German university hospital. Ten patients. The use of LMA for airway management in surgical reconstruction of the trachea. Ten patients with tracheal stenosis of 50% to 90% were enrolled prospectively during the study period. The airway management consisted of the insertion of an LMA. During resection and reconstruction, high-frequency jet ventilation was used. Several arterial blood gas analyses (ABG) were performed before, during, and after the tracheal resection and reconstruction. All values were presented as median and interquartile ranges or as absolute and relative values, and no emergency change to cross-field intubation was necessary. The lowest PaO2 was 93 mmHg in 1 patient after 20 minutes of jet ventilation, whereas PaO2 increased after the induction phase and remained stable in 9 patients. There were no intraoperative complications related to anesthetic management apart from transient hypercarbia during and after jet ventilation. Preoperative and postoperative ABG were comparable. One patient required immediate postoperative ventilatory support. Two patients developed postoperative pneumonia, leading to their admission to the intensive care unit. One patient was operated with a palliative approach due to massive dyspnea and died in the next postoperative course. The use of LMA is an alternative option in airway management for tracheal reconstruction, even in patients with significant tracheal stenosis. Potential advantages compared to tracheal intubation are unimpaired access to the operative field and the lack of stress on the fresh anastomosis.

Airway Complications in Intubated Versus Laryngeal Mask Airway-Managed Dentistry: A Meta-Analysis.

Serious airway complications can occur with inadequate airway management during general anesthesia (GA). This meta-analysis investigated randomized controlled trials that compared perioperative technique failures and airway complications, including hypoxia, during GA for dentistry using endotracheal intubation or a laryngeal mask airway (LMA) for airway management. A systematic search of electronic databases and gray literature was completed. Independent reviewers assessed eligibility, performed data extraction, completed risk of bias assessment, and judged the quality of results through Grading of Recommendations, Assessment, Development, and Evaluation. Risk ratios (RRs) for airway complications, with 95% CIs, were calculated. Heterogeneity was quantified using the I2 statistic. Sensitivity and age-subgroup analyses were explored. Six trials were deemed eligible from a total of 9076 identified reports. The airway management intervention for these trials was LMA. Technique failures or effect differences in airway complications were not detected except for postoperative hypoxia, where LMA use had a decreased risk (RR, 0.22; 95% CI, 0.06-0.77; I2 = 0%; moderate quality). A similar effect was seen in the pediatric analysis (RR, 0.10; 95% CI, 0.01-0.84; I2 = 0%; moderate quality). Additionally, LMA use reduced pediatric sore throat risk (RR, 0.08; 95% CI, 0.04-0.15; I2 = 0%; moderate quality). Use of an LMA in dentistry may have the potential to reduce the risk of postoperative hypoxia, particularly in pediatric patients, although further study is required.

Laryngeal mask ventilation with chest compression during neonatal resuscitation: randomized, non-inferiority trial in lambs.

Background:Effective positive pressure ventilation is a critical factor in newborn resuscitation. Neonatal endotracheal intubation (ETT) needs considerable training and experience, which poses a human factor challenge. Laryngeal mask airway (LMA) ventilation can be a secure and viable alternative during the initial stages of newborn resuscitation. However, there is limited evidence for its use during chest compression (CC).Methods:Seventeen lambs were randomized into LMA or ETT ventilation post cord occlusion induced cardiac arrest. After 5 minutes of cardiac arrest, resuscitation was initiated as per NRP recommendations. Ventilation, oxygenation, systemic and pulmonary hemodynamic parameters were recorded till return of spontaneous circulation (ROSC) or 20 minutes.Results:Baseline characteristics were similar between the groups. The incidence of ROSC was 75% (6/8) in the LMA group and 56% (5/9) in the ETT group (p = 0.74). The median (IQR) time to achieve ROSC was 6.85 min (6 min – 9.1 min) in the LMA group and 7.50 min (5.33 min – 18 min) in the ETT group (p = 0.65).Conclusion:LMA ventilation during CC is feasible and non-inferior to ETT in this model.

Reducing intraoperative time with laryngeal mask airway and stretcher in pediatric adenotonsillectomy

ObjectivesAdenotonsillectomy (T&A) is one of the most common surgical procedures performed in the United States. Several studies have defined the safety of laryngeal mask airway (LMA) during this surgery, and conflicting evidence exists describing the role it plays in reducing intraoperative times. Our objective is to describe the role LMA and operating on a stretcher have on reducing intraoperative time during pediatric T&A. MethodsThis is a retrospective review between October 2017 and January 2020. We included patients between the ages of 4–18 years old undergoing T&A. We excluded medically complex patients with chromosomal, craniofacial, and metabolic abnormalities, patients with cerebral palsy, and those who were tracheostomy dependent. Patient demographics included surgical indication, age, sex, obesity, use of preoperative midazolam, type of airway used, use of traditional operating room (OR) bed versus transport stretcher, surgeon type, and intraoperative times. Data was analyzed with univariate t-test and multivariate linear regression. ResultsOne hundred seventy-nine patients were included with an average age of 7.2 years. LMA and stretcher were used on 46.4% and 40.2% of patients, respectively. On multivariate linear regression LMA reduced emergence time by 4.4 min (p ≤ 0.001, 95% CI −6.7 to −2.1) and transport stretcher reduced induction time by 2.5 min (p = 0.04, 95% CI −4.9 to −0.1). Use of LMA and stretcher did not have a statistically significant difference on actual procedure time. ConclusionOur study further supports the role LMA has in reducing intraoperative times in addition to describing a novel method of reducing intraoperative time by operating on a transport stretcher for healthy children undergoing T&A.Level of evidence: 3.

29 Moderate versus general anesthesia for operating room hysteroscopy: A cost analysis

Hysteroscopy is a procedure that is moving out of the operating room and into the office and ambulatory centers, as it has found to be safe and feasible in these settings. However, many gynecologists are still restricted to taking their patients to the operating room. At our institution there is a high volume of hysteroscopy performed by gynecologists in the operating room, and there is wide variation in the anesthesia care given. The primary objective is to perform a cost analysis for general anesthesia versus moderate sedation for hysteroscopic procedures in the operating room. Our secondary purpose is to compare additional patient outcomes including OR time, PACU time, and opioid requirements. Subjects were identified through a search of CPT codes using the Deep Six Cohort Builder from January 1, 2018, through December 31, 2018. Inclusion criteria included patients who had a hysteroscopy procedure at our institution, an urban tertiary care center, and were at least 18 years old. Patients were excluded who had a concurrent procedure which required general anesthesia or an emergent procedure. The remaining variables were extracted from the electronic medical record. Subjects who had a polypectomy and myomectomy were placed in two separate groups for analysis. These two groups were subsequently analyzed by anesthesia type: general anesthesia with endotracheal tube (ETT), general with laryngeal mask airway (LMA), and monitored anesthesia care (MAC). Data was analyzed using the Kruskal-Wallis test and Chi-Square test. There were 467 patients included in the analysis (355 polypectomy and 112 myomectomy). For polypectomy there were 35 (ETT), 273 (LMA), and 45 (MAC) subjects. For myomectomy 14 (ETT), 90 (LMA), and 8 (MAC). General anesthesia with ETT had a higher cost compared to both general LMA and MAC for myomectomy and polypectomy (P = 0.0225, and P = 0.005). There was no difference in cost between general LMA and MAC (P = 0.36 and P = 0.10). General anesthesia ETT had longer OR times compared to LMA and MAC but no difference in PACU time or opioid use. For polypectomy, OR times for LMA use was also longer than MAC (60 minutes vs 54 minutes, P = 0.008). No patient factors could account for the use of an ETT or LMA; rather the chart review showed only anesthesiologist preference for the method. Hysteroscopy is a safe, relatively short procedure, shown to be safe in the office or ambulatory setting. Efforts must be made to minimize cost and intervention in the main OR given the low reimbursement of these procedures. General anesthesia with ETT had higher costs and longer OR times. Most patients received LMA for airway support, which for polypectomy had longer OR times compared with MAC. Going forward, this data will help standardize anesthesia care for hysteroscopy and guide implementation for a hysteroscopy ERAS protocol that could be used across multiple settings.