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Postnatal Development of Laryngeal Reflexes in the Dog

Postnatal Development of Laryngeal Reflexes in the Dog Abstract • An investigation of laryngeal reflex maturation was undertaken in the dog to identify its period of most rapid postnatal differentiation. The canine model was selected because of its laryngeal reflex similarity to that of the human being. Observations in the dog indicate maximum differentiation to occur 1 to 1½ months postnatally, based on measurements of recurrent laryngeal nerve myelination and conduction velocity. Latency and threshold analyses of evoked laryngeal responses additionally confirm this viewpoint. The importance of these observations rests in an understanding of developmental upper respiratory tract mechanisms that may be chronologically related to causes of fatal ventilatory events producing unexplained infant death. Such a correlation, requiring further confirmation, is based on the assumption that a critical period of most rapid development allows a transient susceptibility to noxious influences that can cause a disruption in organ function and even death of that organism itself. (Arch Otolaryngol 103:138-143, 1977) References 1. Dawes GS: Foetal and Neonatal Physiology: A Comparative Study of the Changes at Birth . Chicago, Year Book Medical Publishers Inc, 1973, chap 17 , pp 223-230. 2. Bergman AB, Ray CG, Pomeroy MA, et al: Studies of the sudden infant death syndrome in King County , Washington: III. Epidemiology. Pediatrics 49:860-870, 1972. 3. Naeye RL: Pulmonary arterial abnormalities in the sudden infant death syndrome . N Engl J Med 289:1167-1170, 1973.Crossref 4. Steinschneider A: Prolonged apnea in the sudden infant death syndrome: Clinical and laboratory observations . Pediatrics 50:646-654, 1972. 5. Guilleminault L, Eldridge FL, Dement WC: Insomnia with sleep apnea: A new syndrome . Science 181:856-858, 1972.Crossref 6. Lugaresi E, Coccagna G, Mantovani M, et al: Hypersomnia with periodic breathing . Bull Physiopathol Respir 8:1103-1113, 1972. 7. Bayes BJ: Prone infants in SIDS . N Engl J Med 290:693-694, 1974. 8. Shaw EB: Sudden unexpected death in infancy: Syndrome . Am J Dis Child 116:115-119, 1968. 9. Sasaki CT, Suzuki M: Laryngeal reflexes in cat, dog, and man . Arch Otolaryngol 102:400-402, 1976.Crossref 10. Suzuki M, Sasaki CT: The effect of various sensory stimuli in reflex laryngeal adduction . Ann Otol Rhinol Laryngol , to be published. 11. Suzuki M, Sasaki CT: The initiation of reflex glottic closure . Ann Otol Rhinol Laryngol 85:382-386, 1976. 12. Suzuki M, Sasaki CT: Laryngeal spasm: A neurophysiologic redefinition . Ann Otol Rhinol Laryngol , to be published. 13. Kirchner JA: Physiology of the Larynx . Rochester, Minn, American Academy of Ophthalmology and Otolaryngology, 1970, chap 11 , pp 41-49. 14. 14. Cumming WA, Reilly BJ: Fatigue aspiration: Cause of recurrent pneumonia in infants . Radiology 105:387-390, 1972.Crossref 15. Kennedy C, Grave GD, Jehle JW, et al: Changes in blood flow in the component structures of the dog brain during postnatal maturation . J Neurochem 19:2423-2433, 1972.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

Postnatal Development of Laryngeal Reflexes in the Dog

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Publisher
American Medical Association
Copyright
Copyright © 1977 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1977.00780200064005
Publisher site
See Article on Publisher Site

Abstract

Abstract • An investigation of laryngeal reflex maturation was undertaken in the dog to identify its period of most rapid postnatal differentiation. The canine model was selected because of its laryngeal reflex similarity to that of the human being. Observations in the dog indicate maximum differentiation to occur 1 to 1½ months postnatally, based on measurements of recurrent laryngeal nerve myelination and conduction velocity. Latency and threshold analyses of evoked laryngeal responses additionally confirm this viewpoint. The importance of these observations rests in an understanding of developmental upper respiratory tract mechanisms that may be chronologically related to causes of fatal ventilatory events producing unexplained infant death. Such a correlation, requiring further confirmation, is based on the assumption that a critical period of most rapid development allows a transient susceptibility to noxious influences that can cause a disruption in organ function and even death of that organism itself. (Arch Otolaryngol 103:138-143, 1977) References 1. Dawes GS: Foetal and Neonatal Physiology: A Comparative Study of the Changes at Birth . Chicago, Year Book Medical Publishers Inc, 1973, chap 17 , pp 223-230. 2. Bergman AB, Ray CG, Pomeroy MA, et al: Studies of the sudden infant death syndrome in King County , Washington: III. Epidemiology. Pediatrics 49:860-870, 1972. 3. Naeye RL: Pulmonary arterial abnormalities in the sudden infant death syndrome . N Engl J Med 289:1167-1170, 1973.Crossref 4. Steinschneider A: Prolonged apnea in the sudden infant death syndrome: Clinical and laboratory observations . Pediatrics 50:646-654, 1972. 5. Guilleminault L, Eldridge FL, Dement WC: Insomnia with sleep apnea: A new syndrome . Science 181:856-858, 1972.Crossref 6. Lugaresi E, Coccagna G, Mantovani M, et al: Hypersomnia with periodic breathing . Bull Physiopathol Respir 8:1103-1113, 1972. 7. Bayes BJ: Prone infants in SIDS . N Engl J Med 290:693-694, 1974. 8. Shaw EB: Sudden unexpected death in infancy: Syndrome . Am J Dis Child 116:115-119, 1968. 9. Sasaki CT, Suzuki M: Laryngeal reflexes in cat, dog, and man . Arch Otolaryngol 102:400-402, 1976.Crossref 10. Suzuki M, Sasaki CT: The effect of various sensory stimuli in reflex laryngeal adduction . Ann Otol Rhinol Laryngol , to be published. 11. Suzuki M, Sasaki CT: The initiation of reflex glottic closure . Ann Otol Rhinol Laryngol 85:382-386, 1976. 12. Suzuki M, Sasaki CT: Laryngeal spasm: A neurophysiologic redefinition . Ann Otol Rhinol Laryngol , to be published. 13. Kirchner JA: Physiology of the Larynx . Rochester, Minn, American Academy of Ophthalmology and Otolaryngology, 1970, chap 11 , pp 41-49. 14. 14. Cumming WA, Reilly BJ: Fatigue aspiration: Cause of recurrent pneumonia in infants . Radiology 105:387-390, 1972.Crossref 15. Kennedy C, Grave GD, Jehle JW, et al: Changes in blood flow in the component structures of the dog brain during postnatal maturation . J Neurochem 19:2423-2433, 1972.Crossref

Journal

Archives of OtolaryngologyAmerican Medical Association

Published: Mar 1, 1977

References