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Wang X, Liu X, Mi J. Perioperative management and drug selection for sedated/anesthetized patients undergoing MRI examination: A review. Medicine (Baltimore) 2023; 102:e33592. [PMID: 37083779 PMCID: PMC10118336 DOI: 10.1097/md.0000000000033592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 03/31/2023] [Indexed: 04/22/2023] Open
Abstract
In recent years, magnetic resonance imaging (MRI) technology has become an indispensable imaging tool owing to significant improvements in MRI that have opened up new diagnostic perspectives. Due to the closed environment, long imaging time, and need to remain still during the examination process, the examiner may cannot cooperate with the completion of the examination of the procedure, which increases the need for deep sedation or anesthesia. Achieving this can sometimes be challenging, especially in the special nontraditional environment of MRI equipment (unfamiliar and narrow spaces, away from patients, strong magnetic fields) and in special populations requiring sedation/anesthesia during examinations, which pose certain challenges for the perioperative anesthesia management of MRI. A simple "checklist" is necessary because it allows the anesthesiologist to become familiar with the particular environment and human and material resources as quickly as possible. For the choice of sedative/anesthetic, the traditional drugs, such as midazolam and ketamine, are still used due to the ease of administration despite their low sedation success rate, prolonged recovery, and significant adverse events. Currently, dexmedetomidine, with respiratory drive preservation, propofol, with high effectiveness and rapid recovery, and sevoflurane, which is mild and nonirritating, are preferred for sedation/anesthesia in children and adults undergoing MRI. Therefore, familiarity with the perioperative management of patient sedation and general anesthesia and drug selection in the MRI environment is critical for successful surgical completion and for the safe and rapid discharge of MRI patients receiving sedation/anesthesia.
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Affiliation(s)
- Xiaoyu Wang
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - XueQuan Liu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Junqiao Mi
- Julius-Maximilians-Universität of Würzburg, Würzburg, Germany
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Salerno A, Picconi E, Genovese O, Piastra M, Pulitanò SM, Tosi F, Mancino A, Pane M, De Sanctis R, Carlini D, Mercuri EM, Conti G. Needleless inhaled anesthesia with sevoflurane: Advantages of a simplified approach for children with spinal muscular atrophy undergoing intrathecal administration of nusinersen. Paediatr Anaesth 2023; 33:282-290. [PMID: 36636888 DOI: 10.1111/pan.14630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 12/31/2022] [Accepted: 01/03/2023] [Indexed: 01/14/2023]
Abstract
BACKGROUND Intrathecal nusinersen administration, a fundamental step in the treatment of spinal muscular atrophy, is challenging in children. AIMS This retrospective monocentric analysis of prospectively collected data evaluated the feasibility of needleless general anesthesia exclusively with sevoflurane, without imaging guidance, for children undergoing nusinersen administration in a 24-month period. METHODS Clinical data included demographics, type of spinal muscular atrophy, presence and severity of scoliosis. Primary outcome was defined by the number of predefined sentinel adverse events related to anesthesia. Secondary outcomes were assessed by duration of the procedure, number of lumbar puncture attempts, and number of failures. Other measures included number and type of moderate, minor and minimal adverse events, as well as number and type of puncture-related adverse events. RESULTS 116 patients (mean age: 8.7 (SD 6.9) years; with scoliosis: 49.1%) underwent 250 lumbar punctures; two cases of prolonged desaturation, considered as sentinel adverse events, (0.8%) were recorded during anesthesia (primary outcome). None of the patients underwent orotracheal intubation nor required an unplanned admission in the Pediatric Intensive Care Unit. No patient required an unplanned or prolonged hospitalization after the procedure. Mean number of puncture attempts was 1.6 (SD 1.3), and mean duration of the procedure was 14.1 (SD 8.3) minutes. No failure in the drug administration occurred (secondary outcomes). CONCLUSION In this single-center experience, needleless general anesthesia with inhaled sevoflurane without imaging guidance has been shown to be feasible for children with spinal muscular atrophy undergoing lumbar puncture for nusinersen administration.
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Affiliation(s)
- Annalisa Salerno
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Enzo Picconi
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Orazio Genovese
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Marco Piastra
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Silvia M Pulitanò
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Federica Tosi
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Aldo Mancino
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Marika Pane
- Nemo Clinical Centre, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Roberto De Sanctis
- Nemo Clinical Centre, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Debora Carlini
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Eugenio M Mercuri
- Nemo Clinical Centre, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giorgio Conti
- Pediatric Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
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Siegler BH, Dudek M, Müller T, Kessler M, Günther P, Hochreiter M, Weigand MA. Impact of supplemental anesthesia in preterm infants undergoing inguinal hernia repair under spinal anesthesia : A retrospective analysis. DIE ANAESTHESIOLOGIE 2023; 72:175-182. [PMID: 36121460 PMCID: PMC9974706 DOI: 10.1007/s00101-022-01199-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 08/26/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND In preterm infants, spinal anesthesia (SpA) is recognized as an alternative to general anesthesia for inguinal hernia repair (IHR); however, some patients require supplemental anesthesia during surgery. The purpose of this study was to investigate the frequency and impact of supplemental anesthesia on perioperative care and adverse respiratory and hemodynamic events. METHODS A retrospective study of preterm infants undergoing IHR at Heidelberg University Hospital within the first year of life between 2009 and 2018 was carried out. RESULTS In total, 230 patients (255 surgeries) were investigated. Among 189 procedures completed using SpA 24 patients received supplemental anesthesia. Reasons for supplemental anesthesia included loss of anesthetic effect, returning motor response, and respiratory complications. Compared to SpA alone, no differences were found concerning hemodynamic parameters; however, patients requiring supplemental anesthesia displayed higher rates of postoperative oxygen supplementation and unexpected admission to the intensive care unit. The rate of perioperative apnea was 2.7%. Apneic events exclusively occurred after supplemental anesthesia. Bilateral IHR and duration of surgery were associated with the need for supplemental anesthesia. CONCLUSION Whereas SpA might be favorable when compared to general anesthesia for IHR, the data indicate that particular caution is required in patients receiving supplemental anesthesia due to the possible risk for adverse respiratory events.
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Affiliation(s)
- Benedikt Hermann Siegler
- Department of Anesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany.
| | - Martha Dudek
- Department of Anesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
| | - Thomas Müller
- Department of Anesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
| | - Markus Kessler
- Division of Pediatric Surgery, Department of Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany
| | - Patrick Günther
- Division of Pediatric Surgery, Department of Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany
| | - Marcel Hochreiter
- Department of Anesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany ,Clinic for Anesthesiology and Intensive Care, Essen University Hospital, Hufelandstraße 55, 45147 Essen, Germany
| | - Markus Alexander Weigand
- Department of Anesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
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Min JY, Lee JR, Lee HM, Nam HJ, Byon HJ. A Novel Propofol Dosing Regimen for Pediatric Sedation during Radiologic Tests. J Clin Med 2022; 11:jcm11175076. [PMID: 36079005 PMCID: PMC9457389 DOI: 10.3390/jcm11175076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/26/2022] [Accepted: 08/27/2022] [Indexed: 12/02/2022] Open
Abstract
The dose of propofol for pediatric sedation during radiologic tests has been proposed as an equation of 0.75 + 0.14 × age (months) + 45.82 × body surface area (m2) based on results in a previous study. We compared this equation and the conventional dosing strategy for sedation in children undergoing radiologic tests. An amount of 180 children scheduled for magnetic resonance imaging (MRI) were randomized to experimental and control groups. The initial induction dose of propofol calculated using the equation was administered in the experimental group. In the control group, children received 1 mg/kg of the initial induction dose of propofol. Then, 0.5 mg/kg of the additional dose was followed to induce sedation in both groups. When awake or moving, a rescue injection of 0.5 mg/kg propofol was given. The total induction dose was more significant in the experimental group. The number of injections for induction in the experimental group was lesser. The dose and number of rescue injections in the experimental group were significantly less. The equation for the induction dose of propofol in a previous study could achieve quick induction of sedation and prevent a rescue injection during sedation. However, caution is needed when using the equation.
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Affiliation(s)
- Ji-Young Min
- Department of Anesthesiology and Pain Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Korea
| | - Jeong-Rim Lee
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Hye-Mi Lee
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yongin Severance Hospital, 363 Dongbaekjukjeon-daero, Giheung-gu, Yongin-si 16995, Korea
| | - Ho-Jae Nam
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
| | - Hyo-Jin Byon
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
- Correspondence: ; Tel.: +82-2-2227-4641; Fax: +82-2-2227-7897
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Expert consensus on the clinical practice of neonatal brain magnetic resonance imaging. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2022; 24:14-25. [PMID: 35177171 PMCID: PMC8802390 DOI: 10.7499/j.issn.1008-8830.2110018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
In recent years, magnetic resonance imaging (MRI) has been widely used in evaluating neonatal brain development, diagnosing neonatal brain injury, and predicting neurodevelopmental prognosis. Based on current research evidence and clinical experience in China and overseas, the Neonatologist Society of Chinese Medical Doctor Association has developed a consensus on the indications and standardized clinical process of neonatal brain MRI. The consensus has the following main points. (1) Brain MRI should be performed for neonates suspected of hypoxic-ischemic encephalopathy, intracranial infection, stroke and unexplained convulsions; brain MRI is not considered a routine in the management of preterm infants, but it should be performed for further evaluation when cranial ultrasound finds evidence of brain injury; as for extremely preterm or extremely low birth weight infants without abnormal ultrasound findings, it is recommended that they should undergo MRI examination at term equivalent age once. (2) Neonates should undergo MRI examination in a non-sedated state if possible. (3) During MRI examination, vital signs should be closely monitored to ensure safety; the necessity of MRI examination should be strictly evaluated for critically ill neonates, and magnetic resonance compatible incubator and ventilator can be used. (4) At present, 1.5 T or 3.0 T equipment can be used for neonatal brain MRI examination, and the special coil for the neonatal head should be used to improve signal-to-noise ratio; routine neonatal brain MRI sequences should at least include axial T1 weighted image (T1WI), axial T2 weighted imaging (T2WI), diffusion-weighted imaging, and sagittal T1WI or T2WI. (5) It is recommended to use a structured and graded reporting system, and reports by at least two reviewers and multi-center collaboration are recommended to increase the reliability of the report.
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Wang F, Zhang G, Zhou Y, Yang X, Zhou L, Yuan J, Fei X, Zhu Z, Liu D. The expanded effects of sevoflurane on the nervous system: the harmful effect of residual concentration of sevoflurane on the respiratory system through neurogenic inflammation. IBRAIN 2021; 7:68-79. [PMID: 37786912 PMCID: PMC10529160 DOI: 10.1002/j.2769-2795.2021.tb00068.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/14/2021] [Accepted: 05/27/2021] [Indexed: 10/04/2023]
Abstract
Background Neurogenic inflammation caused by sevoflurane may not only limite to the nervous system, but also expand to the respiratory system. The purpose of this study was to investigate the expression changes of transient receptor potential vanilloid 1 (TRPV1), neurokinin A (NKA), neurokinin B (NKB), calcitonin gene related peptide (CGRP) and substance P (SP) in 14, 21 and 42-day-old rats after inhaling 0.4% sevoflurane, in order to evaluate whether the residual sevoflurane be harmful to the respiratory system through neurogenic inflammation. Methods The anesthetic inhalation device was designed to allow 14, 21 and 42-day-old rats inhale 0.4% sevoflurane, while rats in the control group inhaled 40% O2 for 1h. Rats in the antagonist group inhaled 0.4% sevoflurane or 40% O2 for 1 h after Capsazepine (CPZ) pretreatment. The expression of TRPV1 in lung tissue was detected by western blot, and the expression of NKA, NKB, CGRP and SP in trachea was detected by immunohistochemistry. Results After inhaling 0.4% sevoflurane, the expression of TRPV1 in lung tissue of 14 and 21-day-old rats was significantly higher than that of the control group, as well as increased the expression of CGRP and SP in the trachea of 14-day-old rats and NKA, NKB, CGRP and SP in the trachea of 21-day-old rats. CPZ pretreatment could antagonize these effects. Conclusion Residual sevoflurane during resuscitation of inhalation anesthesia could induce neurogenic inflammation by activating TRPV1, which damaged to the developing respiratory system, but has no significant effect on the respiratory system in adulthood.
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Affiliation(s)
- Feng‐Lin Wang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Guang‐Ting Zhang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Yan‐Nan Zhou
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Xin‐Xin Yang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Lin Zhou
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Jie Yuan
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Xia Fei
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Zhao‐Qiong Zhu
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - De‐Xing Liu
- Soochow University Medical CollegeSuzhouJiangsuChina
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
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Atelectasis prevention during anaesthesia using high-flow nasal cannula therapy: A paediatric randomised trial using MRI images. Anaesth Crit Care Pain Med 2020; 39:819-824. [PMID: 33080406 DOI: 10.1016/j.accpm.2020.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/27/2020] [Accepted: 08/12/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Atelectasis frequently occurs early on during anaesthesia in children. We hypothesised that positive expiratory pressure (PEP) generated via high-flow nasal cannula (HFNC) could prevent atelectasis in non-intubated children under general anaesthesia. The objective was to compare the volume of atelectasis present in patients treated via HFNC to that of patients treated via a face bag-mask without PEP. The outcome used for this comparison was the ratio of the atelectasis volume to the total pulmonary volume. METHODS A prospective single-centre, single-blind, randomised trial was conducted in a tertiary hospital from November 2018 through May 2019. The trial subjects were infants and children between six months and six years of age who required anaesthesia for an MRI. The children were randomised to receive sevoflurane for maintenance of anaesthesia either via a classic face bag-mask or by HFNC. The atelectasis volume was measured from thoracic MRI images. The judgement criterion was the ratio of the atelectasis volume to the lung volume. RESULTS Of a trial group of 42 patients, 21 received anaesthesia via a face bag-mask and 21 via HFNC. After three patients were excluded for technical issues, the data for 39 patients were analysed. The atelectasis volume to the lung volume ratio in the HFNC group was significantly smaller than the ratio for the face bag-mask group (1.6% vs 6.8%, respectively; p=0.002). CONCLUSION HFNC was associated with a lower atelectasis lung ratio compared to using a face bag-mask during anaesthesia for children maintained with spontaneous ventilation. Registered on Clinicaltrials.gov: NCT03592589.
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Jung SM. Drug selection for sedation and general anesthesia in children undergoing ambulatory magnetic resonance imaging. Yeungnam Univ J Med 2020; 37:159-168. [PMID: 32299181 PMCID: PMC7384916 DOI: 10.12701/yujm.2020.00171] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 03/29/2020] [Accepted: 04/06/2020] [Indexed: 12/23/2022] Open
Abstract
The demand for drug-induced sedation for magnetic resonance imaging (MRI) scans have substantially increased in response to increases in MRI utilization and growing interest in anxiety in children. Understanding the pharmacologic options for deep sedation and general anesthesia in an MRI environment is essential to achieve immobility for the successful completion of the procedure and ensure rapid and safe discharge of children undergoing ambulatory MRI. For painless diagnostic MRI, a single sedative/anesthetic agent without analgesia is safer than a combination of multiple sedatives. The traditional drugs, such as chloral hydrate, pentobarbital, midazolam, and ketamine, are still used due to the ease of administration despite low sedation success rate, prolonged recovery, and significant adverse events. Currently, dexmedetomidine, with respiratory drive preservation, and propofol, with high effectiveness and rapid recovery, are preferred for children undergoing ambulatory MRI. General anesthesia using propofol or sevoflurane can also provide predictable rapid time to readiness and scan times in infant or children with comorbidities. The selection of appropriate drugs as well as sufficient monitoring equipment are vital for effective and safe sedation and anesthesia for ambulatory pediatric MRI.
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Affiliation(s)
- Sung Mee Jung
- Department of Anesthesiology and Pain Medicine, Yeungnam University College of Medicine, Daegu, Korea
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Liu D, Yuan J, Fei X, Zhu Y, Zhou Y, Zhang C, Dong L, Zhu Z. Effects of inhalation of sevoflurane at different concentrations on TRPV1 in airways of rats at different developmental stages. Life Sci 2020; 249:117472. [PMID: 32112870 DOI: 10.1016/j.lfs.2020.117472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 10/24/2022]
Abstract
Aim Determine changes in the expressions of the ion channel-TRPV1-and neuropeptides-NKA, NKB, calcitonin gene-related peptide (CGRP), and SP-in 14-, 21-, and 42-day-old rats after inhaling 1.5% and 2.6% sevoflurane. MAIN METHODS A small in-house inhalation anesthesia chamber was designed to allow 14-, 21-, and 42-day-old rats inhale 1.5% and 2.6% sevoflurane, and rats in the control group inhaled carrier gas(1 L/min air +1 L/min O2). In addition, 14- and 21-day-old rats were pretreated with capsazepine, followed by inhalation of 1.5% and 2.6% sevoflurane or the carrier gas. The expression of TRPV1 in lung tissues was detected by Western blotting, whereas the expressions of NKA, NKB, CGRP, and SP in the trachea were detected by immunohistochemistry. KEY FINDINGS After inhalation of 1.5% sevoflurane, the expression of TRPV1 in the lung tissues of 14- and 21-day-old rats was significantly increased compared with that in the control group, which was antagonized by capsazepine pretreatment. Moreover, inhalation of 1.5% sevoflurane markedly increased the expressions of NKA, NKB, CGRP, and SP in the trachea of 21-day-old rats and of NKB, CGRP, and SP in the trachea of 14-day-old rats. The expressions of these molecules were antagonized by capsazepine pretreatment. Conversely, inhalation of 2.6% sevoflurane decreased the expressions of NKA and NKB in the trachea of 42-day-old rats. SIGNIFICANCE Sevoflurane did not upregulate the expression of TRPV1 in the airways of late-developing rats. This anesthetic may have a two-way effect on airways, resulting in considerable effects in pediatric clinical anesthesia management.
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Affiliation(s)
- Dexing Liu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Jie Yuan
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Xia Fei
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Yuhang Zhu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Yannan Zhou
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Chao Zhang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Liang Dong
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Zhaoqiong Zhu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China.
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