Abstract
Purpose
Stridor during emergence from anesthesia is not rare in children managed with supraglottic airway (SGA). However, we know little about the mechanisms of stridor and behavior of the vocal cords (VC). This study aimed to clarify patterns of VC movement and laryngeal airway maintenance function during recovery from anesthesia in children with SGA.
Methods
This is a secondary analysis of data collected from an observational study involving 27 anesthetized children. Using a multi-panel recording system, endoscopic VC image, vital sign monitor, multi-channel tracings of respiratory variables and respiratory sound and patient’s view were simultaneously captured in one monitor. Inspiratory and expiratory VC angles formed by lines connecting anterior and posterior commissures were measured at the first spontaneous breath and the breath one minute after the first breath. VC narrowing and dilation were assessed by differences of VC angles.
Results
Inspiratory VC narrowing (median (IQR): 5.3 (2.7, 9.1) degree at the first breath) and dilation (− 2.7 (− 3.8, − 1.7) degree at the first breath) were observed in 15 and 12 out of 27 children, respectively. The former group achieved greater tidal volume compared to the latter in one minute. Five children (19%) temporarily developed stridor-like sound from outside with inspiratory VC narrowing. The stridor-like sound was captured by microphones attached to the neck and anesthesia circuit, but was not evident from the chest.
Conclusion
Laryngeal narrowing occurs in half of the children with SGA during emergence from anesthesia, and temporal stridor-like sound is relatively common.
Clinical trial registration
UMIN (University Hospital Information Network) Clinical Registry: UMIN000025058 (https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000028697).
Similar content being viewed by others
Data availability
The data that support the findings of this study are not openly available due to reasons of sensitivity and are available from the corresponding author upon reasonable request. Data are located in controlled access data storage at Chiba University Hospital.
References
Bhananker SM, Ramamoorthy C, Geiduschek JM, Posner KL, Domino KB, Haberkern CM, Campos JS, Morray JP. Anesthesia-related cardiac arrest in children: update from the Pediatric perioperative cardiac arrest registry. Anesth Analg. 2007;105(2):344–50.
Tait AR, Malviya S, Voepel-Lewis T, Munro HM, Siewert M, Pandit UA. Risk factors for perioperative adverse respiratory events in children with upper respiratory tract infections. Anesthesiology. 2001;95:299–306.
Burgoyne LL, Anghelescu DL. Intervention steps for treating laryngospasm in pediatric patients. Paediatr Anaesth. 2008;18(4):297–302.
Luce V, Harkouk H, Brasher C, Michelet D, Hilly J, Maesani M, Diallo T, Mangalsuren N, Nivoche Y, Dahmani S. Supraglottic airway devices vs tracheal intubation in children: a quantitative meta-analysis of respiratory complications. Paediatr Anaesth. 2014;24(10):1088–98.
Flick RP, Wilder RT, Pieper SF, van Koeverden K, Ellison KM, Marienau ME, Hanson AC, Schroeder DR, Sprung J. Risk factors for laryngospasm in children during general anesthesia. Paediatr Anaesth. 2008;18(4):289–96.
Alalami AA, Ayoub CM, Baraka AS. Laryngospasm: review of different prevention and treatment modalities. Paediatr Anaesth. 2008;18(4):281–8.
Isono S. Interaction between upper airway muscles and structures during sleep. In: Marcus C, editor. Sleep and breathing in children: a developmental approach. 2nd ed. Florida: Boca Raton; 2008. p. 131–56.
Fregosi RF, Ludlow CL. Activation of upper airway muscles during breathing and swallowing. J Appl Physiol. 2014;116(3):291–301.
Eikermann M, Malhotra A, Fassbender P, Zaremba S, Jordan AS, Gautam S, White DP, Chanmberlin NL. Differential effects of isoflurane and propofol on upper airway dilator muscle activity and breathing. Anesthesiology. 2008;108:897–906.
Tanaka A, Isono S, Ishikawa T, Sato J, Nishino T. Laryngeal resistance before and after minor surgery endotracheal tube versus laryngeal mask airway™. Anesthesiology. 2003;99:252–8.
Isono S, Shiba K, Yamaguchi M, Tanaka A, Hattori T, Konno A, Nishino T. Pathogenesis of laryngeal narrowing in patients with multiple system atrophy. J Physiol. 2001;536(Pt 1):237–49.
Ishibashi K, Kitamura Y, Kato S, Sugano M, Sakaguchi Y, Sato Y, Isono S. Changes in laryngeal airway patency in response to complete reversal of rocuronium-induced paralysis with sugammadex in small children with a supraglottic airway: protective effect of fentanyl? Br J Anaesth. 2020;125(1):e158–60. https://doi.org/10.1016/j.bja.2019.09.006.
Hollingsworth HM. Wheezing and stridor. Clin Chest Med. 1987;8(2):231–40.
Isono S. Upper airway muscle function during sleep. In: Marcus C, editor. Sleep and breathing in children: a developmental approach. 2nd ed. Florida: Boca Raton; 2008. p. 261–91.
Bluher AE, Darrow DH. Stridor in the newborn. Pediatr Clin North Am. 2019;66(2):475–88.
Naguib ML, Streetman DS, Clifton S, Nasr SZ. Use of laryngeal mask airway in flexible bronchoscopy in infants and children. Pediatr Pulmonol. 2005;39(1):56–63.
Pluijms WA, van Mook WN, Wittekamp BH, Bergmans DC. Postextubation laryngeal edema and stridor resulting in respiratory failure in critically ill adult patients: updated review. Crit Care. 2015;19:295.
Nishino T. Physiological and pathophysiological implications of upper airway reflexes in humans. Jpn J Physiol. 2000;50:3–14.
Ishikawa T, Isono S, Tanaka A, Tagaito Y, Nishino T. Airway protective reflexes evoked by laryngeal instillation of distilled water under sevoflurane general anesthesia in children. Anesth Analg. 2005;101(6):1615–8.
Tagaito Y, Isono S, Nishino T. Upper airway reflexes during a combination of propofol and fentanyl anesthesia. Anesth Analg. 1998;88(6):1459–66.
Mimoz O, Benard T, Gaucher A, Frasca D, Debaene B. Accuracy of respiratory rate monitoring using a non-invasive acoustic method after general anaesthesia. Br J Anaesth. 2012;108(5):872–5.
Erb TO, von Ungern-Sternberg BS, Moll J, Frei FJ. Impact of high concentrations of sevoflurane on laryngeal reflex responses. Paediatr Anaesth. 2017;27(3):282–9.
Erb TO, von Ungern-Sternberg BS, Keller K, Rosner GL, Craig D, Frei FJ. Fentanyl does not reduce the incidence of laryngospasm in children anesthetized with sevoflurane. Anesthesiology. 2010;113:41–7.
Oberer C, von Ungern-Sternberg BS, Frei FJ, Erb TO. Respiratory reflex responses of the larynx differ between sevoflurane and propofol in pediatric patients. Anesthesiology. 2005;103:1142–8.
Bergmann I, Crozier TA, Roessler M, Schotola H, Mansur A, Büttner B, Hinz JM, Bauer M. The effect of changing the sequence of cuff inflation and device fixation with the LMA-Supreme® on device position, ventilatory complications, and airway morbidity: a clinical and fiberscopic study. BMC Anesthesiol. 2014;14:2.
Kundra P, Deepak R, Ravishankar M. Laryngeal mask insertion in children: a rational approach. Paediatr Anaesth. 2003;13(8):685–90.
Acknowledgements
Sara Shimizu M.D. (Shimizu Orthopedic Plastic Surgery Clinic, Tokyo, Japan) greatly helped to improve this manuscript.
Funding
Japan Society for the Promotion of Science, 17K16722, Katsuhiko Ishibashi, 20K17830, Katsuhiko Ishibashi.
Author information
Authors and Affiliations
Contributions
Study design: KI, YK, SI. Data collection: KI, YK, SK, MS, YS (Sakaguchi). Data analysis: KI, SK. Statistical analysis and advice: YS (Sato), SI. Writing up the draft of the manuscript: KI, YK, SI, YS (Sato). Approval of the final version: KI, YJ, MS, YS, YS, SI.
Corresponding author
Ethics declarations
Conflict of interest
This study was supported by JSPS KAKENHI Grant number 17K16722 and 20K17830 (Katsuhiko Ishibashi). Other authors have no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
About this article
Cite this article
Ishibashi, K., Kitamura, Y., Kato, S. et al. Dynamic vocal cord behavior and stridor during emergence from general anesthesia in small children with supraglottic airway. J Anesth 37, 672–680 (2023). https://doi.org/10.1007/s00540-023-03218-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00540-023-03218-z