scholarly journals Oculocardiac and Oculorespiratory Reflex during Strabismus Surgery under General Anesthesia with Laryngeal Mask Airway for Maintaining Spontaneous Respiration: A Retrospective Study

2019 ◽  
Author(s):  
Sun Young Shin ◽  
Min Ju Kim ◽  
Jin Joo
Keyword(s):  
Laryngeal Mask Airway ◽  
General Anesthesia ◽  
Pediatric Patients ◽  
Strabismus Surgery ◽  
Adult Patients ◽  
Laryngeal Mask ◽  
Spontaneous Respiration ◽  
Anesthesia Induction ◽  
Depth Of Anesthesia ◽  
Specific Muscle

Abstract Background: The oculocardiac reflex (OCR) is defined as a 10–20% reduction in heart rate (HR) from the baseline value or dysrhythmia, and the oculorespiratory reflex (ORR) manifests as shallow respiratory movement and bradypnea caused by manipulation of the eye. The aim of this study was to elucidate whether the specific muscle operated on has an effect on OCR and ORR, as well as whether the depth of anesthesia influences the OCR and ORR in patients undergoing strabismus surgery with laryngeal mask airway (LMA) to maintain spontaneous respiration. Methods: The medical records of patients who underwent strabismus surgery on lateral rectus (LR) and medial rectus (MR) muscles from January 2017 to December 2017 were reviewed. For anesthesia induction, propofol was administered and the LMA was inserted. Anesthesia was maintained with sevoflurane and spontaneous respiration. Results: The incidences of OCR during LR and MR operations were not significantly different between pediatric and adult patients (29% vs 27% and 15% vs 16%, respectively, p < 0.05). The incidence of ORR, as indexed by tidal volume (TV), was higher during MR surgery than during LR surgery in pediatric patients (29.3% vs 10.1%, p < 0.05). The change in HR during muscle traction and bispectral index (BIS) showed a negative correlation in pediatric patients, but this was not statistically significant. The change in TV during muscle traction and BIS was significantly correlated, in both pediatric and adult patients (r2 = 0.034 and 0.058, respectively, p < 0.05), while the change in respiratory rate (RR) during muscle traction and BIS did not show a significant correlation in either group. Conclusions: The incidence rate of OCR did not differ between LR and MR surgeries, and the depth of anesthesia did not correlate with HR changes during muscle traction. Young age and MR surgery may be risk factors for ORR. However, MV did not decrease because of the increased RR during muscle traction. Thus, maintenance of spontaneous respiration with an LMA is safe during strabismus surgery under general anesthesia for both pediatric and adult patients.

scholarly journals Oculocardiac reflex and oculorespiratory reflex during strabismus surgery under general anesthesia using the laryngeal mask airway with maintenance of spontaneous respiration: A retrospective study

2020 ◽  
Vol 48 (8) ◽  
pp. 030006052094515
Author(s):  
Sun Young Shin ◽  
Min Ju Kim ◽  
Jin Joo
Keyword(s):  
Laryngeal Mask Airway ◽  
Medical Records ◽  
Pediatric Patients ◽  
Strabismus Surgery ◽  
Adult Patients ◽  
Laryngeal Mask ◽  
Spontaneous Respiration ◽  
Depth Of Anesthesia ◽  
Oculocardiac Reflex ◽  
Specific Muscle

Objective To determine (1) how the specific muscle undergoing surgical treatment affects the occurrence of the oculocardiac reflex (OCR) and oculorespiratory reflex (ORR) and (2) whether the depth of anesthesia influences the occurrence of the OCR and ORR in patients undergoing strabismus surgery with a laryngeal mask airway with maintenance of spontaneous respiration. Methods The medical records of patients who underwent strabismus surgery on the lateral rectus (LR) and medial rectus (MR) muscles from January 2017 to December 2017 were retrospectively reviewed. Results The incidence of the OCR was not significantly different between LR and MR operations in either pediatric or adult patients. The incidence of the ORR as indexed by the tidal volume (TV) was significantly higher during MR than LR surgery in pediatric patients (29.3% vs. 10.1%, respectively). The change in TV during muscle traction and the bispectral index were significantly correlated in both pediatric and adult patients (r2 = 0.034 and 0.058, respectively). Conclusions The OCR was not influenced by the specific muscle undergoing surgery or the depth of anesthesia. The incidence of the ORR as indexed by the TV was higher during MR surgery in pediatric patients and was positively correlated with the depth of anesthesia.

scholarly journals Preliminary evaluation of SaCoVLM™ video laryngeal mask airway in airway management for general anesthesia

2022 ◽  
Vol 22 (1) ◽  
Author(s):  
Chun-ling Yan ◽  
Ying Chen ◽  
Pei Sun ◽  
Zong-yang Qv ◽  
Ming-zhang Zuo
Keyword(s):  
Laryngeal Mask Airway ◽  
Airway Management ◽  
General Anesthesia ◽  
Success Rate ◽  
Mouth Opening ◽  
Laryngeal Mask ◽  
Anesthesia Induction ◽  
Preliminary Evaluation ◽  
Number Of Patients ◽  
Sealing Pressure

Abstract Background To preliminary evaluate the application of SaCoVLM™ video laryngeal mask airway in airway management of general anesthesia. Methods We recruited 100 adult patients (ages 18–78 years, male 19, female 81, weight 48–90 kg) with normal predicted airway (Mallampati I ~ II, unrestricted mouth opening, normal head and neck mobility) and ASA I-II who required general anaesthesia. The SaCoVLM™ was inserted after anesthesia induction and connected with the anesthesia machine for ventilation. Our primary outcome was glottic visualization grades. Secondary outcomes included seal pressure, success rate of insertion, intraoperative findings (gastric reflux and contraposition), gastric drainage and 24-h complications after operation. Results The laryngeal inlet was exposed in all the patients and shown on the video after SaCoVLM™ insertion. The status of glottic visualization was classified: grade 1 in 55 cases, grade 2 in 23 cases, grade 3 in 14 cases and grade 4 in 8 cases. The first-time success rate of SaCoVLM™ insertion was 95% (95% CI = 0.887 to 0.984), and the total success rate was 96% (95% CI = 0.901 to 0.989). The sealing pressure of SaCoVLM™ was 34.1 ± 6.2 cmH2O and the gastric drainage were smooth. Only a small number of patients developed mild complications after SaCoVLM™ was removed (such as blood stains on SaCoVLM™ and sore throat). Conclusions The SaCoVLM™ can visualize partial or whole laryngeal inlets during the surgery, with a high success rate, a high sealing pressure and smooth gastroesophageal drainage. SaCoVLM™ could be a promise new effective supraglottic device to airway management during general anesthesia. Trial registration ChiCTR,ChiCTR2000028802.Registered 4 January 2020.

scholarly journals A prospective study on the incidence of sore throat after use of laryngeal mask airway during general anesthesia

2021 ◽  
pp. 102595
Author(s):  
kourosh Farazmehr ◽  
Mohamad Aryafar ◽  
Farshid Gholami ◽  
Giti Dehghanmanshadi ◽  
Seyed Sepideh Hosseini
Keyword(s):  
Laryngeal Mask Airway ◽  
Prospective Study ◽  
General Anesthesia ◽  
Sore Throat ◽  
Laryngeal Mask ◽  
A Prospective Study

To compare the frequency of postoperative sore throat with I-gel versus laryngeal mask airway in patients

2021 ◽  
Vol 15 (12) ◽  
pp. 3232-3235
Author(s):  
M. J. Ahmed Kamal ◽  
Baber Zaheer ◽  
Naveed Ahmed Durrani ◽  
Khaleel Ahmad ◽  
Sumara Tabassam ◽  
...  
Keyword(s):  
Laryngeal Mask Airway ◽  
General Anesthesia ◽  
Sore Throat ◽  
Laryngeal Mask ◽  
Supraglottic Airway ◽  
Postoperative Sore Throat ◽  
Significant Difference ◽  
Group A ◽  
Group Members ◽  
Group B

Background: In case of general anesthesia, airway maintenance along with least complications is the most important goal of team of anesthesiologists. In case of clinical practice, the laryngeal mask airway (LMA) devices have superiority in managing supraglottic airway. Recently i-gel airway has been introduced as supraglottic airway equipment (disposable). Aim: To make comparison between laryngeal mask and I-gel with respect to postoperative complication of sore throat in case of patients who were given general anesthesia. Study design: Randomized trial Setting: Anesthesia Department Study duration: 6 after synopsis approval in total 6months of duration Methods: Candidates were divided randomly divided into two groups. In case of members of group A, patients were given i-gel where as members of group B, disposable LMA was given. General anesthesia was administered according to the standardized protocols. A day after operation, candidates were check post operatively for 24 hours, for sore throat and information was documented on Performa. Results: The candidates mean age was 44.23±15.11years in case of i-gel group members whereas 46.10±15.56 years in case of LMA group. In case of i-gel group, there were about twenty five males members and thirty five were females members . In case of LMA group members, there were about twenty six males and thirty four female members . In present case research, sore throat postoperatively was seen in case of 17(14.2%) cases, i.e. 4 (6.7%) in i-gel group while 13(21.7%) in case of LMA group. The significant difference was witnessed between members of both groups (p<0.05). Conclusion: Thus i-gel is better than LMA for general anesthesia as it has fewer chances of side effects like postoperative sore throat. Keywords: Postoperative sore throat, I-gel, laryngeal mask airway, general anesthesia

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