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Rosero Salazar DH, Honnlee S, Liu ZJ. Tongue, palatal, hyoid and pharyngeal muscle activity during chewing, swallowing, and respiration. Arch Oral Biol 2024; 157:105845. [PMID: 37948985 PMCID: PMC10872482 DOI: 10.1016/j.archoralbio.2023.105845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 09/25/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023]
Abstract
OBJECTIVE Chewing, swallowing, and respiration are synchronized oropharyngeal functions. This study aimed to analyze the dynamics and coordination during natural chewing and swallowing in relation to respiratory phases. DESIGN Eight oropharyngeal muscles in minipigs were recorded using electromyography, X-ray fluoroscopy, and nasopharyngeal dynamics. Chewing cycles and swallowing episodes were analyzed for timing and activity amplitude along respiratory cycles. Digastric and middle pharyngeal constrictor were used as zero-points for timing analysis in chewing cycles and swallowing episodes, respectively. The beginning of these cycles and episodes were used as the zero-point for timing analysis in respiration during feeding. RESULTS The timing of jaw closing (57.8%) was longer than opening (42.2%) during chewing. Muscle activity occurred 20% later than digastric onsets and 15% earlier than jaw closing phase. Duration of muscle activity was shorter in ipsilateral than contralateral sides except for palatal muscles. Pharyngeal, palatal, and hyoid muscles showed longer durations than tongue muscles in jaw opening (p < 0.05). Palatal and hyoid muscles showed 2-phased activity in chewing while hyoid muscles showed higher amplitude in chewing and swallowing than other muscles. About 80% of the chewing cycles and swallowing episodes occurred in expiration. Nasopharyngeal airflow velocity increased from jaw opening to swallowing while airflow pressure decreased. CONCLUSION These findings indicate key activity of palatal and pharyngeal muscles mostly in chewing. The respiratory cycle changes in chewing and swallowing simultaneously with the activation of the tongue, palatal, and pharyngeal muscles. These findings will be useful for further understanding the mechanisms in swallowing and breathing disorders.
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Affiliation(s)
| | - Sydney Honnlee
- Department of Orthodontics, University of Washington, Seattle, USA
| | - Zi-Jun Liu
- Department of Orthodontics, University of Washington, Seattle, USA.
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2
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Rangwala R, Saadi R, Lee JJ, Reedy EL, Kantarcigil C, Roberts M, Martin-Harris B. Respiratory-Swallow Coordination in Individuals with Parkinson's Disease: A Systematic Review and Meta-Analysis. JOURNAL OF PARKINSON'S DISEASE 2023; 13:681-698. [PMID: 37393516 PMCID: PMC10473138 DOI: 10.3233/jpd-230057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/05/2023] [Indexed: 07/03/2023]
Abstract
BACKGROUND Swallowing impairment, including altered physiology and aspiration, occur across the progression of Parkinson's disease (PD). The phase of respiration during which a swallow is initiated has been linked to swallowing impairment and aspiration in cohorts with dysphagia following stroke and head and neck cancer treatment, but has been understudied in PD. If similar findings are shown in individuals with PD, the implications for swallowing assessment and treatment are significant. OBJECTIVE The aim of this systematic review and meta-analysis of literature was to examine respiratory-swallow coordination measures and potential implications on swallowing physiology in individuals with PD. METHODS An extensive search of 7 databases (PubMed, EMBASE, Central, Web of Science, ProQuest Dissertations & Theses, Scopus, and CINAHL) with predetermined search terms was conducted. Inclusion criteria were individuals with PD and the use of objective evaluations of respiratory-swallow coordination. RESULTS Of the 13,760 articles identified, 11 met the inclusion criteria. This review supports the presence of atypical respiratory swallow patterning, respiratory pause duration and lung volume at swallow initiation in individuals with PD. The meta-analysis estimated an occurrence of 60% of non-expiration-expiration and 40% of expiration-expiration respiratory phase patterns surrounding swallowing. CONCLUSION Although this systematic review supports the occurrence of atypical respiratory-swallow coordination in individuals with PD, the evidence is limited by the variability in the methods of data acquisition, analysis, and reporting. Future research examining the impact of respiratory swallow coordination on swallowing impairment and airway protection using consistent, comparable, and reproducible methods and metrics in individuals with PD is warranted.
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Affiliation(s)
- Rabab Rangwala
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, School of Communication, Northwestern University, Evanston, IL, USA
| | - Raneh Saadi
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, School of Communication, Northwestern University, Evanston, IL, USA
| | - Jungwha Julia Lee
- Preventive Medicine (Biostatistics), Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Erin L. Reedy
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, School of Communication, Northwestern University, Evanston, IL, USA
- Edward J. Hines, Jr. Veterans Affairs Medical Center, Hines, IL, USA
| | - Cagla Kantarcigil
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, School of Communication, Northwestern University, Evanston, IL, USA
| | - Megan Roberts
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, School of Communication, Northwestern University, Evanston, IL, USA
| | - Bonnie Martin-Harris
- Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, School of Communication, Northwestern University, Evanston, IL, USA
- Otolaryngology - Head & Neck Surgery, Radiation Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Edward J. Hines, Jr. Veterans Affairs Medical Center, Hines, IL, USA
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3
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Pitts T, Iceman KE. Deglutition and the Regulation of the Swallow Motor Pattern. Physiology (Bethesda) 2023; 38:0. [PMID: 35998250 PMCID: PMC9707372 DOI: 10.1152/physiol.00005.2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 08/19/2022] [Accepted: 08/19/2022] [Indexed: 11/22/2022] Open
Abstract
Despite centuries of investigation, questions and controversies remain regarding the fundamental genesis and motor pattern of swallow. Two significant topics include inspiratory muscle activity during swallow (Schluckatmung, i.e., "swallow-breath") and anatomical boundaries of the swallow pattern generator. We discuss the long history of reports regarding the presence or absence of Schluckatmung and the possible advantages of and neural basis for such activity, leading to current theories and novel experimental directions.
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Affiliation(s)
- Teresa Pitts
- Department of Neurological Surgery, Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky
| | - Kimberly E Iceman
- Department of Neurological Surgery, Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky
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Garand KLF, Bhutada AM, Hopkins-Rossabi T, Mulekar MS, Carnaby G. Pilot Study of Respiratory-Swallow Coordination in Amyotrophic Lateral Sclerosis. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2022; 65:2815-2828. [PMID: 35921660 DOI: 10.1044/2022_jslhr-21-00619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
PURPOSE Amyotrophic lateral sclerosis (ALS) impacts bulbar and respiratory musculature, which may contribute to impaired swallow function (dysphagia) and respiratory-swallow coordination. The purpose of this pilot study was to examine if respiratory-swallow coordination in individuals with ALS was perturbed compared to healthy controls. We further explored relationships between measures of respiratory function and self-reported swallowing outcomes on respiratory-swallow coordination. METHOD We employed a cross-sectional design with eight participants with ALS and eight age- and sex-matched healthy participants. Respiratory inductance plethysmography and a nasal cannula were used to capture respiratory-swallow phase patterns during a standardized clinical swallow examination. The advantageous respiratory-swallow phase pattern was defined if exhalation surrounded the swallow (E-E). Spirometry was used to capture indices of respiratory function (forced vital capacity % predicted, peak cough flow [PCF]). Validated questionnaires were used to collect information regarding ALS-related bulbar functional status and swallowing-related concerns. RESULTS Compared to the matched healthy cohort, individuals with ALS demonstrated higher rates of non-E-E respiratory-swallow phase patterning and worse bulbar/swallow dysfunction. Group (ALS), swallow tasks, and PCF were significantly associated with respiratory-swallow phase pattern. CONCLUSIONS These preliminary findings support altered respiratory-swallow phase patterning in ALS. Future work should employ an instrumental assessment to quantify swallowing physiology and elucidate the relationship between perturbed respiratory-swallow coordination and swallowing function.
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Affiliation(s)
| | - Ankita M Bhutada
- Department of Speech Pathology and Audiology, University of South Alabama, Mobile
| | - Theresa Hopkins-Rossabi
- Speech-Language Pathology Program, Department of Rehabilitation Sciences, Medical University of South Carolina, Charleston
| | - Madhuri S Mulekar
- Department of Mathematics and Statistics, University of South Alabama, Mobile
| | - Giselle Carnaby
- School of Health Sciences, The University of Texas Health Science Center, San Antonio
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Validation of Earphone-Type Sensors for Non-Invasive and Objective Swallowing Function Assessment. SENSORS 2022; 22:s22145176. [PMID: 35890862 PMCID: PMC9323246 DOI: 10.3390/s22145176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 11/29/2022]
Abstract
Standard methods for swallowing function evaluation are videofluoroscopy (VF) and videoendoscopy, which are invasive and have test limitations. We examined the use of an earphone-type sensor to noninvasively evaluate soft palate movement in comparison with VF. Six healthy adults wore earphone sensors and swallowed barium water while being filmed by VF. A light-emitting diode at the sensor tip irradiated infrared light into the ear canal, and a phototransistor received the reflected light to detect changes in ear canal movement, including that of the eardrum. Considering that the soft palate movement corresponded to the sensor waveform, a Bland–Altman analysis was performed on the difference in time recorded by each measurement method. The average difference between the time taken from the most downward retracted position before swallowing to the most upward position during swallowing of the soft palate in VF was −0.01 ± 0.14 s. The Bland–Altman analysis showed no fixed or proportional error. The minimal detectable change was 0.28 s. This is the first noninvasive swallowing function evaluation through the ear canal. The earphone-type sensor enabled us to measure the time from the most retracted to the most raised soft palate position during swallowing and validated this method for clinical application.
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Curtis JA, Huber JE, Dakin AE, Troche MS. Effects of Bolus Holding on Respiratory-Swallow Coordination in Parkinson's Disease. AMERICAN JOURNAL OF SPEECH-LANGUAGE PATHOLOGY 2022; 31:705-721. [PMID: 34752144 DOI: 10.1044/2021_ajslp-21-00044] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
PURPOSE The aim of this study was to examine the effects of bolus holding on respiratory-swallow coordination (RSC) in people with Parkinson's disease (PD). METHOD People with PD were prospectively recruited to undergo RSC assessment using simultaneous respiratory inductive plethysmography and flexible laryngoscopy. During RSC assessment, participants swallowed 5-ml thin liquid boluses during held and nonheld swallowing tasks. Measures of RSC were analyzed for each swallow, which included respiratory pause duration, lung volume at swallow initiation, respiratory phase patterning, and the presence of paradoxical respiratory movements. Multilevel statistical modeling was used to determine if differences in RSC were present between the held and nonheld tasks. RESULTS Thirty-three participants were enrolled. When compared to the nonheld swallows, the held swallows exhibited shorter respiratory pauses (p = .001, R 2 = .019), lower lung volumes at swallow initiation (p < .001, R 2 = .116), more frequent exhale-swallow-exhale patterns (p < .001, OR = 4.30), and less frequent paradoxical respiratory movements (p = .001, OR = 0.43). CONCLUSIONS Findings from this study revealed that bolus holding significantly influences RSC in people with PD. This demonstrates that bolus holding may be an efficacious strategy to immediately improve RSC in PD. However, clinicians and researchers should consider avoiding bolus holding during swallowing evaluations if attempting to assess RSC behaviors that are most typical for the examinee.
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Affiliation(s)
- James A Curtis
- Laboratory for the Study of Upper Airway Dysfunction, Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY
| | | | - Avery E Dakin
- Laboratory for the Study of Upper Airway Dysfunction, Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY
| | - Michelle S Troche
- Laboratory for the Study of Upper Airway Dysfunction, Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY
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Hao N, Sasa A, Kulvanich S, Nakajima Y, Nagoya K, Magara J, Tsujimura T, Inoue M. Coordination of Respiration, Swallowing, and Chewing in Healthy Young Adults. Front Physiol 2021; 12:696071. [PMID: 34326780 PMCID: PMC8313873 DOI: 10.3389/fphys.2021.696071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/15/2021] [Indexed: 11/18/2022] Open
Abstract
Examining the coordination of respiration and swallowing is important for elucidating the mechanisms underlying these functions and assessing how respiration is linked to swallowing impairment in dysphagic patients. In this study, we assessed the coordination of respiration and swallowing to clarify how voluntary swallowing is coordinated with respiration and how mastication modulates the coordination of respiration and swallowing in healthy humans. Twenty-one healthy volunteers participated in three experiments. The participants were asked to swallow 3 ml of water with or without a cue, to drink 100 ml of water using a cup without breathing between swallows, and to eat a 4-g portion of corned beef. The major coordination pattern of respiration and swallowing was expiration–swallow–expiration (EE type) while swallowing 3 ml of water either with or without a cue, swallowing 100 ml of water, and chewing. Although cueing did not affect swallowing movements, the expiratory time was lengthened with the cue. During 100-ml water swallowing, the respiratory cycle time and expiratory time immediately before swallowing were significantly shorter compared with during and after swallowing, whereas the inspiratory time did not differ throughout the recording period. During chewing, the respiratory cycle time was decreased in a time-dependent manner, probably because of metabolic demand. The coordination of the two functions is maintained not only in voluntary swallowing but also in involuntary swallowing during chewing. Understanding the mechanisms underlying respiration and swallowing is important for evaluating how coordination affects physiological swallowing in dysphagic patients.
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Affiliation(s)
- Naohito Hao
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Anna Sasa
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Sirima Kulvanich
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuta Nakajima
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kouta Nagoya
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Jin Magara
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takanori Tsujimura
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Makoto Inoue
- Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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8
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Yamaguchi-Komeyama K, Ayuse T, Mikushi S, Hisamatsu N, Yamaguchi T, Magata N, Tanoue N, Kawasaki H, Kozu R, Takahata H, Ayuse T. The pilot study examining the effects of swallowing position on lung volume fraction and the coordination between respiration and non-nutritive swallowing reflex. Clin Exp Dent Res 2020; 6:296-304. [PMID: 32067414 PMCID: PMC7301395 DOI: 10.1002/cre2.274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 11/24/2019] [Accepted: 11/28/2019] [Indexed: 11/25/2022] Open
Abstract
Background Body position might affect the coordination between respiration and swallowing. This study was carried out to test the hypothesis that during swallowing, coordinated movements of muscle groups such as the diaphragm and rectus abdominis muscles are important to control normal swallowing apnea. Objective To investigate this hypothesis, respiratory parameters, swallowing apnea and muscle activity were measured in each of four body positions: sitting position with feet on the floor, 30° reclining position, lateral position, and standing position. Methods All measurements were performed in nine healthy subjects. Nasal airflow was measured using a pneumotachometer and muscle activity was measured using an electromyograph. All lung volume fraction parameters were measured using spirometer and swallowing apnea time was calculated. Results The maximum inspiratory volume was 2.76 ± 0.83 L in the 30° reclining position, which was significantly larger than that in the other positions (p = .0001). The preliminary expiratory volume was 1.05 ± 0.42 L in the 30° reclining position, which was significantly smaller than that in the other positions (p < .0001). The swallowing apnea time during water swallowing was 1.17 ± 0.35 sec in the lateral position and 0.87 ± 0.28 sec in the 30° reclining position, which tended to be longer than the 0.78 sec in the sitting position. Conclusion We conclude that both lateral and reclining positions require a longer period of swallowing apnea compared to the sitting and standing positions. Differences in body position may significantly influence the coordination between respiration and swallowing.
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Affiliation(s)
- Kaori Yamaguchi-Komeyama
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Terumi Ayuse
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Shinya Mikushi
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Noriko Hisamatsu
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Taiki Yamaguchi
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Nobuaki Magata
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Naomi Tanoue
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Hanako Kawasaki
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Ryo Kozu
- Department of Cardiopulmonary Rehabilitation Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideaki Takahata
- Department of Rehabilitation Medicine, Nagasaki University Hospital, Nagasaki, Japan
| | - Takao Ayuse
- Department of Special Care Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan.,Department of Dental Anesthesiology, Course of Medical and Dental Sciences, Nagasaki University Institute of Biomedical Sciences, Nagasaki, Japan
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Nakamura Y, Nakajima T, Sasakawa Y, Tsukuno S, Sakurai R, Kurosawa M, Iwase Y, Saitoh I, Hori K, Hayashi T, Hayasaki H. Influence of food adhesivity and quantity in lip closing pressure. Physiol Behav 2020; 214:112743. [DOI: 10.1016/j.physbeh.2019.112743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/24/2019] [Accepted: 11/16/2019] [Indexed: 10/25/2022]
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10
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Hase T, Miura Y, Nakagami G, Okamoto S, Sanada H, Sugama J. Food bolus‐forming ability predicts incidence of aspiration pneumonia in nursing home older adults: A prospective observational study. J Oral Rehabil 2019; 47:53-60. [DOI: 10.1111/joor.12861] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 06/22/2019] [Accepted: 07/04/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Takashi Hase
- Department of Oral and Maxillofacial Surgery Noto General Hospital Ishikawa Japan
| | - Yuka Miura
- Department of Imaging Nursing Science, Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Gojiro Nakagami
- Department of Gerontological Nursing/ Wound Care Management, Graduate School of Medicine The University of Tokyo Tokyo Japan
- Global Nursing Research Center, Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Shigefumi Okamoto
- Department of Laboratory Science, School of Health Sciences, College of Medical, Pharmaceutical, and Health Sciences Kanazawa University Ishikawa Japan
| | - Hiromi Sanada
- Department of Gerontological Nursing/ Wound Care Management, Graduate School of Medicine The University of Tokyo Tokyo Japan
- Global Nursing Research Center, Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Junko Sugama
- Institute for Frontier Science Initiative Kanazawa University Ishikawa Japan
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Hopkins-Rossabi T, Curtis P, Temenak M, Miller C, Martin-Harris B. Respiratory Phase and Lung Volume Patterns During Swallowing in Healthy Adults: A Systematic Review and Meta-Analysis. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2019; 62:868-882. [PMID: 30964715 PMCID: PMC6802879 DOI: 10.1044/2018_jslhr-s-18-0323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/24/2018] [Accepted: 11/20/2018] [Indexed: 05/22/2023]
Abstract
Purpose The coordination of respiration with swallowing is critical for facilitation of airway protection and the efficiency of movements that propel ingested material through the upper aerodigestive tract. Confirmation of a predominant pattern in healthy adults provides a platform for comparison to aberrant patterns observed in the population with swallowing impairment (dysphagia). Method A comprehensive search of published research in MEDLINE via PubMed 1946-2018, Embase 1947-2018, and Proquest Dissertations & Theses Global 1861-2018 was completed. Results Thirty-seven articles meeting inclusion criteria were selected for data extraction, and the findings were reviewed. In addition, a meta-analysis of the data was completed. A significantly higher occurrence ( p < .001) of expiration prior to and following the swallow was found when compared to 3 other patterns. The predominance of the pattern was influenced by increases in bolus volume when controlling for participant sample size. Conclusion Determination of this predominant pattern provides a normative framework for evaluating respiratory-swallow coordination in adults across the age span and highlights the relevance for assessing and incorporating respiratory swallowing coordination during assessment and interventions.
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Affiliation(s)
| | - Philip Curtis
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL
| | - Mark Temenak
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL
| | - Corinne Miller
- Galter Health Sciences Library, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Bonnie Martin-Harris
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL
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Ramos-Garcia RI, Sazonov E, Tiffany S. Recognizing cigarette smoke inhalations using hidden Markov models. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2017:1242-1245. [PMID: 29060101 DOI: 10.1109/embc.2017.8037056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Previous studies with the Personal Automatic Cigarette Tracker (PACT) wearable system have found that smoking presents a distinct temporal breathing pattern, which might be well-suited for recognition by hidden Markov models (HMMs). In this work, we explored the feasibility of using HMMs to characterize the temporal information of smoking inhalations contained in the respiratory signals such as tidal volume, airflow, and the signal from the hand-to-mouth proximity sensor. Left-to-right HMMs were built to classify smoking and non-smoking inhalations using either only the respiratory signals, or both respiratory and hand proximity signals. Using a data set of 20 subjects, a leave-one-out cross-validation was performed on each HMM. In the recognition of smoke inhalations, the highest average recall, precision and F-score perceived by the HMMs was 42.39%, 88.19% and 56.38%, respectively, providing a 7.3% improvement in recall against a previously reported Support Vector Machines.
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Yagi N, Oku Y, Nagami S, Yamagata Y, Kayashita J, Ishikawa A, Domen K, Takahashi R. Inappropriate Timing of Swallow in the Respiratory Cycle Causes Breathing-Swallowing Discoordination. Front Physiol 2017; 8:676. [PMID: 28970804 PMCID: PMC5609438 DOI: 10.3389/fphys.2017.00676] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 08/24/2017] [Indexed: 01/13/2023] Open
Abstract
Rationale: Swallowing during inspiration and swallowing immediately followed by inspiration increase the chances of aspiration and may cause disease exacerbation. However, the mechanisms by which such breathing–swallowing discoordination occurs are not well-understood. Objectives: We hypothesized that breathing–swallowing discoordination occurs when the timing of the swallow in the respiratory cycle is inappropriate. To test this hypothesis, we monitored respiration and swallowing activity in healthy subjects and in patients with dysphagia using a non-invasive swallowing monitoring system. Measurements and Main Results: The parameters measured included the timing of swallow in the respiratory cycle, swallowing latency (interval between the onset of respiratory pause and the onset of swallow), pause duration (duration of respiratory pause for swallowing), and the breathing–swallowing coordination pattern. We classified swallows that closely follow inspiration (I) as I-SW, whereas those that precede I as SW-I pattern. Patients with dysphagia had prolonged swallowing latency and pause duration, and tended to have I-SW or SW-I patterns reflecting breathing–swallows discoordination. Conclusions: We conclude that swallows at inappropriate timing in the respiratory cycle cause breathing–swallowing discoordination, and the prolongation of swallowing latency leads to delayed timing of the swallow, and results in an increase in the SW-I pattern in patients with dysphagia.
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Affiliation(s)
- Naomi Yagi
- Department of Swallowing Physiology, Hyogo College of MedicineNishinomiya, Japan.,Department of Neurology, Graduate School of Medicine, Kyoto UniversityKyoto, Japan.,Clinical Research Center for Medical Equipment Development, Kyoto University HospitalKyoto, Japan
| | - Yoshitaka Oku
- Department of Swallowing Physiology, Hyogo College of MedicineNishinomiya, Japan.,Department of Physiology, Hyogo College of MedicineNishinomiya, Japan
| | - Shinsuke Nagami
- Department of Neurology, Graduate School of Medicine, Kyoto UniversityKyoto, Japan.,Clinical Research Center for Medical Equipment Development, Kyoto University HospitalKyoto, Japan.,Department of Physiology, Hyogo College of MedicineNishinomiya, Japan
| | - Yoshie Yamagata
- Department of Health Sciences, Prefectural University of HiroshimaHiroshima, Japan
| | - Jun Kayashita
- Department of Health Sciences, Prefectural University of HiroshimaHiroshima, Japan
| | - Akira Ishikawa
- Graduate School of Health Sciences, Kobe UniversityKobe, Japan
| | - Kazuhisa Domen
- Department of Physical Medicine & Rehabilitation, Hyogo College of MedicineNishinomiya, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Graduate School of Medicine, Kyoto UniversityKyoto, Japan
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14
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Ramos-Garcia RI, Tiffany S, Sazonov E. Using respiratory signals for the recognition of human activities. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2016:173-176. [PMID: 28268307 DOI: 10.1109/embc.2016.7590668] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human activity recognition through wearable sensors is becoming integral to health monitoring and other applications. Typically, human activity is captured through signals from inertial sensors, while signals from other sensors have been utilized less frequently. In this study, we explored the feasibility of classifying human activities by analyzing the temporal information of respiratory signals through hidden Markov models (HMMs). Left-to-right HMMs were trained for five activities: sedentary, walking, eating, talking, and cigarette smoking. The temporal information from every breathing segment was captured by fragmenting the tidal volume and airflow signals into smaller frames and computing features for each frame. These frames were used as observations to model the states of the HMMs through mixture of Gaussians. Using leave-one-out cross-validation, the classification performance showed an average precision, recall, and F-score of 60.37%, 67.01%, and 62.78%, respectively. Results suggest that respiratory signals can potentially be used as a primary or secondary source in the recognition of some human activities.
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Yamada T, Matsuo K, Izawa M, Yamada S, Masuda Y, Ogasawara T. Effects of age and viscosity on food transport and breathing-swallowing coordination during eating of two-phase food in nursing home residents. Geriatr Gerontol Int 2017; 17:2171-2177. [PMID: 28425188 DOI: 10.1111/ggi.13056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/10/2017] [Accepted: 02/20/2017] [Indexed: 11/29/2022]
Abstract
AIM When eating food that contains both liquid and solid phases, the liquid component frequently enters the hypopharynx before swallowing and can increase the risk of aspiration. Thus, we examined whether the initial viscosity of mixed consistency food could alter pre-swallow food transport and breathing-swallowing coordination in older adults. METHODS Fiberoptic endoscopy was recorded while 18 healthy young adults and 19 older adults ate 5 g of steamed rice combined with 3 mL of blue-dye water. Liquid viscosity was set at three levels by the addition of a thickening agent (0 wt%, thin; 2 wt%, thicker; 4 wt%, higher-viscosity, respectively). We measured the timing of swallow initiation and its corresponding respiratory phase for each participant. RESULTS For thin mixed consistency food, whereas the timing of swallow initiation was comparable between young and older participants, swallowing was initiated during inspiration significantly more often in older participants (31.6 %) than in young participants (5.6 %). In contrast, the timing of swallow initiation was delayed in older participants for thicker and higher-viscosity foods, although swallowing was commonly initiated during expiration in both groups. CONCLUSIONS In older adults, we observed that swallow initiation function was preserved for thin mixed consistency samples, but breathing-swallowing coupling was diminished. For higher-viscosity foods, swallow initiation was delayed in this group, but breathing-swallowing coordination was not disturbed, probably as a result of the slow bolus flow into the hypopharynx. Thus, it appears the initial viscosity of mixed consistency food profoundly affects food transport before swallowing as well as breathing-swallowing coordination in nursing home residents. Geriatr Gerontol Int 2017; 17: 2171-2177.
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Affiliation(s)
- Tsuyoshi Yamada
- Department of Dentistry, Fujita Health University, Toyoake, Aichi, Japan.,Department of Special Care Dentistry, Matsumoto Dental University, Shiojiri, Nagano, Japan
| | - Koichiro Matsuo
- Department of Dentistry, Fujita Health University, Toyoake, Aichi, Japan
| | - Masayuki Izawa
- Department of Special Care Dentistry, Matsumoto Dental University, Shiojiri, Nagano, Japan
| | | | - Yuji Masuda
- Division of Oral and Maxillofacial Biology, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano, Japan
| | - Tadashi Ogasawara
- Department of Special Care Dentistry, Matsumoto Dental University, Shiojiri, Nagano, Japan
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Matsuo K, Palmer JB. Coordination of oro-pharyngeal food transport during chewing and respiratory phase. Physiol Behav 2015; 142:52-6. [PMID: 25645606 DOI: 10.1016/j.physbeh.2015.01.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 01/28/2015] [Accepted: 01/30/2015] [Indexed: 01/22/2023]
Abstract
When eating solid food, the tongue intermittently propels triturated food to the oropharynx or valleculae, where a bolus accumulates before swallowing. The tongue motion during this food transport (stage II transport, STII) is distinctly different from that during chewing, and is more similar to the oral propulsive stage of swallowing. Therefore, we tested the hypothesis that the onset of STII cycles was more likely to occur during expiration than inspiration. Videofluorography was recorded in a lateral projection while 10 healthy subjects ate solid foods. Respiration was concurrently monitored with plethysmography. Jaw motion cycles were classified as masticatory or swallowing. Masticatory cycles were further divided into chewing cycles and STII cycles. STII cycles were defined as those with bolus propulsion through the fauces by the tongue squeezing against the palate (without swallowing). Overall, 28% (62/223) of chewing cycles were initiated during inspiration, compared with only 12% (9/76) of STII cycles in this phase. The fraction of masticatory cycles occurring during inspiration was significantly smaller for STII cycles than for chewing cycles (Odds Ratio: 0.37 [95% CI: 0.17-0.78], p=0.01). All 36 swallowing cycles had onset during expiration. Our findings reveal that stage II oro-pharyngeal food transport is linked to expiration, as is the oral propulsive stage of swallowing. This suggests a similarity in the neural control of these two feeding behaviors.
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Affiliation(s)
- Koichiro Matsuo
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, MD 21287, United States; Department of Dentistry, Fujita Health University, Toyoake 470-1192, Japan.
| | - Jeffrey B Palmer
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Baltimore, MD 21287, United States; Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins University, Baltimore, MD 21287, United States; Center for Functional Anatomy and Evolution, Johns Hopkins University, Baltimore, MD 21287, United States
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Frequency of Stage II Oral Transport Cycles in Healthy Human. Dysphagia 2014; 29:685-91. [DOI: 10.1007/s00455-014-9562-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 07/23/2014] [Indexed: 10/24/2022]
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Daimon S, Yamaguchi K. Changes in respiratory activity induced by mastication during oral breathing in humans. J Appl Physiol (1985) 2014; 116:1365-70. [PMID: 24744386 DOI: 10.1152/japplphysiol.01236.2013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We examined the effect of oral breathing on respiratory movements, including the number of respirations and the movement of the thoracic wall at rest and while chewing gum. Forty normal nose breathers were selected by detecting expiratory airflow from the mouth using a CO2 sensor. Chest measurements were recorded using a Piezo respiratory belt transducer, and electromyographic (EMG) activity of the masseter and trapezius muscles were recorded at rest and while chewing gum during nasal or oral breathing. Oral breathing was introduced by completely occluding the nostrils with a nose clip. During oral breathing, the respiration rate was significantly lower while chewing gum than while at rest (P < 0.05). While chewing gum, the respiration rate was significantly lower during oral breathing than during nasal breathing (P < 0.05). During oral breathing, thoracic movement was significantly higher while chewing gum than while at rest (P < 0.05). Thoracic movement was significantly greater during oral breathing than during nasal breathing (P < 0.05). The trapezius muscle exhibited significant EMG activity when chewing gum during oral breathing. The activity of the trapezius muscle coincided with increased movement of the thoracic wall. Chewing food while breathing through the mouth interferes with and decreases the respiratory cycle and promotes unusual respiratory movement of the thoracic wall, which is directed by the activity of accessory muscles of respiration.
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Affiliation(s)
- Shigeru Daimon
- Division of Orofacial Functions and Orthodontics, Kyushu Dental University, Fukuoka, Japan
| | - Kazunori Yamaguchi
- Division of Orofacial Functions and Orthodontics, Kyushu Dental University, Fukuoka, Japan
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Abstract
OBJECTIVES Patients hospitalized in the ICU can frequently develop swallowing disorders, resulting in an inability to effectively transfer food, liquids, and pills from their mouth to stomach. The complications of these disorders can be devastating, including aspiration, reintubation, pneumonia, and a prolonged hospital length of stay. As a result, critical care practitioners should understand the optimal diagnostic strategies, proposed mechanisms, and downstream complications of these ICU-acquired swallowing disorders. DATA SOURCES Database searches and a review of the relevant medical literature. DATA SYNTHESIS A significant portion of the estimated 400,000 patients who annually develop acute respiratory failure, require endotracheal intubation, and survive to be extubated are determined to have dysfunctional swallowing. This group of swallowing disorders has multiple etiologies, including local effects of endotracheal tubes, neuromuscular weakness, and an altered sensorium. The diagnosis of dysfunctional swallowing is usually made by a speech-language pathologist using a bedside swallowing evaluation. Major complications of swallowing disorders in hospitalized patients include aspiration, reintubation, pneumonia, and increased hospitalization. The national yearly cost of swallowing disorders in hospitalized patients is estimated to be over $500 million. Treatment modalities focus on changing the consistency of food, changing mealtime position, and/or placing feeding tubes to prevent aspiration. CONCLUSIONS Swallowing disorders are costly and clinically important in a large population of ICU patients. The development of effective screening strategies and national diagnostic standards will enable further studies aimed at understanding the precise mechanisms for these disorders. Further research should also concentrate on identifying modifiable risk factors and developing novel treatments aimed at reducing the significant burden of swallowing dysfunction in critical illness survivors.
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Abstract
Many articles in this section of Comprehensive Physiology are concerned with the development and function of a central pattern generator (CPG) for the control of breathing in vertebrate animals. The action of the respiratory CPG is extensively modified by cortical and other descending influences as well as by feedback from peripheral sensory systems. The central nervous system also incorporates other CPGs, which orchestrate a wide variety of discrete and repetitive, voluntary and involuntary movements. The coordination of breathing with these other activities requires interaction and coordination between the respiratory CPG and those governing the nonrespiratory activities. Most of these interactions are complex and poorly understood. They seem to involve both conventional synaptic crosstalk between groups of neurons and fluid identity of neurons as belonging to one CPG or another: neurons that normally participate in breathing may be temporarily borrowed or hijacked by a competing or interrupting activity. This review explores the control of breathing as it is influenced by many activities that are generally considered to be nonrespiratory. The mechanistic detail varies greatly among topics, reflecting the wide variety of pertinent experiments.
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Affiliation(s)
- Donald Bartlett
- Department of Physiology & Neurobiology, Dartmouth Medical School, Lebanon, New Hampshire, USA.
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Ikenaga N, Yamaguchi K, Daimon S. Effect of mouth breathing on masticatory muscle activity during chewing food. J Oral Rehabil 2013; 40:429-35. [PMID: 23566154 DOI: 10.1111/joor.12055] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2013] [Indexed: 11/28/2022]
Abstract
The aim of this study was to examine the effect of mouth breathing on masticatory muscle activity during chewing food. Masseter muscle activity during chewing of a rice ball was recorded in 45 adult volunteers (three women), identified as nose breathers. Surface electrodes were placed on the skin according to the orientation of the masseter muscle to record the activity of this muscle while the subjects chewed the food until swallowing. Each activity was recorded twice, once with nose breathing and once with mouth breathing induced by nasal obstruction. The integrated and mean electromyography values for mouth breathing were significantly lower than the values for nose breathing (P < 0·05). The resting and total duration of chewing were significantly prolonged (P < 0·05) and the active duration significantly shorter (P < 0·05) when breathing through the mouth compared with the nose. Significantly more chewing strokes were counted for mouth breathing compared with nose breathing (P < 0·05). Taken together, the results indicate that mouth breathing decreases chewing activity and reduces the vertical effect upon the posterior teeth.
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Affiliation(s)
- N Ikenaga
- Division of Orofacial Functions and Orthodontics, Kyushu Dental University, Kitakyushu city, Fukuoka, Japan
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Mishellany-Dutour A, Woda A, Labouré H, Bourdiol P, Lachaze P, Guichard E, Feron G. Retro-nasal aroma release is correlated with variations in the in-mouth air cavity volume after empty deglutition. PLoS One 2012; 7:e41276. [PMID: 22815986 PMCID: PMC3398906 DOI: 10.1371/journal.pone.0041276] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 06/19/2012] [Indexed: 11/18/2022] Open
Abstract
We hypothesized that interindividual differences in motor activities during chewing and/or swallowing were determining factors for the transfer of volatile aroma from the in-mouth air cavity (IMAC) toward the olfactory mucosa. In our first experiment, we looked for changes in IMAC volume after saliva deglutition in 12 healthy subjects. The mean IMAC volume was measured after empty deglutition using an acoustic pharyngometer device. Based on the time course of the IMAC volume after swallowing, we discerned two groups of subjects. The first group displayed a small, constant IMAC volume (2.26 mL ±0.62) that corresponded to a high tongue position. The second group displayed a progressive increase in IMAC (from 6.82 mL ±2.37 to 22.82 mL ±3.04) that corresponded to a progressive lowering of the tongue to its resting position. In our second experiment, we investigated the relationship between IMAC volume changes after deglutition and the level of aroma release at the nostril. For this purpose, the release of menthone was measured at the nostril level in 25 subjects who consumed similar amounts of a mint tablet. The subjects were separated into two groups corresponding to two levels of menthone release: high (H) and low (L). The mean volume of IMAC was measured during and after empty deglutition. Group H displayed a small, constant amplitude of IMAC volume change after deglutition, while Group L displayed a progressive increase in IMAC. It is likely that Group H continuously released the aroma through the veloglossal isthmus as the mint was consumed, while Group L trapped the aroma in the oral cavity and then released it into the nasal cavity upon swallowing. These results show that the in vivo aroma release profile in humans depends closely on the different motor patterns at work during empty deglutition.
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Affiliation(s)
- Anne Mishellany-Dutour
- Dental Faculty, Equipe d'Accueil 3847, Centre de Recherche en Odontologie Clinique, Clermont-Ferrand, France
| | - Alain Woda
- Dental Faculty, Equipe d'Accueil 3847, Centre de Recherche en Odontologie Clinique, Clermont-Ferrand, France
- Centre Hospitalo-Universitaire, Clermont-Ferrand, Service d'Odontologie, Clermont-Ferrand, France
- * E-mail:
| | - Hélène Labouré
- Centre des Sciences du Goût et de l'Alimentation, Unité Mixte de Recherche 1324 Institut National de Recherche Agronomique, Unité Mixte de Recherche 6265 Centre National de la Recherche Scientifique, Université de Bourgogne, Dijon, France
| | - Pierre Bourdiol
- Dental Faculty, Equipe d'Accueil 3847, Centre de Recherche en Odontologie Clinique, Clermont-Ferrand, France
- Centre Hospitalo-Universitaire, Clermont-Ferrand, Service d'Odontologie, Clermont-Ferrand, France
| | - Pauline Lachaze
- Dental Faculty, Equipe d'Accueil 3847, Centre de Recherche en Odontologie Clinique, Clermont-Ferrand, France
| | - Elisabeth Guichard
- Centre des Sciences du Goût et de l'Alimentation, Unité Mixte de Recherche 1324 Institut National de Recherche Agronomique, Unité Mixte de Recherche 6265 Centre National de la Recherche Scientifique, Université de Bourgogne, Dijon, France
| | - Gilles Feron
- Centre des Sciences du Goût et de l'Alimentation, Unité Mixte de Recherche 1324 Institut National de Recherche Agronomique, Unité Mixte de Recherche 6265 Centre National de la Recherche Scientifique, Université de Bourgogne, Dijon, France
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Wheeler Hegland K, Huber JE, Pitts T, Davenport PW, Sapienza CM. Lung volume measured during sequential swallowing in healthy young adults. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2011; 54:777-786. [PMID: 20966381 DOI: 10.1044/1092-4388(2010/09-0237)] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
PURPOSE Outcomes from studying the coordinative relationship between respiratory and swallow subsystems are inconsistent for sequential swallows, and the lung volume at the initiation of sequential swallowing remains undefined. The first goal of this study was to quantify the lung volume at initiation of sequential swallowing ingestion cycles and to identify the respiratory pattern(s) surrounding each sequential swallow ingestion cycle. The second goal was to compare these results with existing data for single swallows. METHOD Twenty healthy young adults served as participants, 9 males and 11 females, between 19 and 28 years of age (M = 22 years of age). Participants completed 2 trials each of 100 mL of water self-delivered by cup and by straw. Calibrated respiratory inductance plethysmography, surface electromyography, and a contact throat microphone were used to detect respiratory parameters, identify swallow-related muscle contraction, and identify swallowing sounds, respectively. RESULTS Significantly higher lung volume initiation for trials delivered by straw and more variable respiratory patterns surrounding cup and straw sequential swallowing ingestion cycles existed compared with single swallows. CONCLUSIONS Results show that as the physiologic demands of swallowing deviate from single, small bolus swallows, the integration of the swallowing and respiratory systems change. This may reflect obligate differences in airway protection strategy and prolonged competition for respiratory resources.
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Gariépy JF, Missaghi K, Dubuc R. The interactions between locomotion and respiration. PROGRESS IN BRAIN RESEARCH 2010; 187:173-88. [DOI: 10.1016/b978-0-444-53613-6.00012-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Boden K, Cedborg AIH, Eriksson LI, Hedström HW, Kuylenstierna R, Sundman E, Ekberg O. Swallowing and respiratory pattern in young healthy individuals recorded with high temporal resolution. Neurogastroenterol Motil 2009; 21:1163-e101. [PMID: 19614871 DOI: 10.1111/j.1365-2982.2009.01352.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The coordination of swallowing and respiration is essential for a safe swallow. Swallowing consists of several subsecond events. To study this, it is important to use modalities with high temporal resolution. In this study, we have examined young healthy individuals with simultaneous videofluoroscopy, videomanometry and respiratory recording, all with high temporal resolution. The onset of 13 predetermined swallowing and respiratory events and the surrounding respiratory phase pattern were studied in different body positions and during different respiratory drives. An increased respiratory drive was induced by breathing 5% CO(2). The results demonstrated a highly repeatable and fixed temporal coordination of the swallowing pattern despite body position and respiratory drive. Previous studies have demonstrated a period of centrally controlled apnoea during swallowing. This apnoea period has a variable length, varying from 1 to 5 s. During increased respiratory drive, we could demonstrate a significantly shorter period of apnoea during swallowing, mainly due to an earlier resumption of respiration. The high temporal recordings in this study have revealed that swallowing during expiration is present basically in all healthy individuals. This swallowing respiratory pattern seems to be appropriate for a safe swallow. This knowledge will be used as a reference for future studies on how swallowing and respiratory coordination might be altered due to ageing and diseases.
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Affiliation(s)
- K Boden
- Department of Radiology, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden.
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Matsuo K, Palmer JB. Coordination of Mastication, Swallowing and Breathing. JAPANESE DENTAL SCIENCE REVIEW 2009; 45:31-40. [PMID: 20161022 DOI: 10.1016/j.jdsr.2009.03.004] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The pathways for air and food cross in the pharynx. In breathing, air may flow through either the nose or the mouth, it always flows through the pharynx. During swallowing, the pharynx changes from an airway to a food channel. The pharynx is isolated from the nasal cavity and lower airway by velopharyngeal and laryngeal closure during the pharyngeal swallow. During mastication, the food bolus accumulates in the pharynx prior to swallow initiation. The structures in the oral cavity, pharynx and larynx serve multiple functions in breathing, speaking, mastication and swallowing. Thus, the fine temporal coordination of feeding among breathing, mastication and swallowing is essential to provide proper food nutrition and to prevent pulmonary aspiration. This review paper will review the temporo-spatial coordination of the movements of oral, pharyngeal, and laryngeal structures during mastication and swallowing, and temporal coordination between breathing, mastication, and swallowing.
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Affiliation(s)
- Koichiro Matsuo
- Department of Special Care Dentistry, Matsumoto Dental University, 1780 Hirooka Gobara, Shiojiri, Nagano, Japan 399-0781
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Gross RD, Atwood CW, Ross SB, Olszewski JW, Eichhorn KA. The Coordination of Breathing and Swallowing in Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2009; 179:559-65. [DOI: 10.1164/rccm.200807-1139oc] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Matsuo K, Palmer JB. Anatomy and physiology of feeding and swallowing: normal and abnormal. Phys Med Rehabil Clin N Am 2008; 19:691-707, vii. [PMID: 18940636 DOI: 10.1016/j.pmr.2008.06.001] [Citation(s) in RCA: 403] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Eating and swallowing are complex behaviors involving volitional and reflexive activities of more than 30 nerves and muscles. They have two crucial biologic features: food passage from the oral cavity to stomach and airway protection. The swallowing process is commonly divided into oral, pharyngeal, and esophageal stages, according to the location of the bolus. The movement of the food in the oral cavity and to the oropharynx differs depending on the type of food (eating solid food versus drinking liquid). Dysphagia can result from a wide variety of functional or structural deficits of the oral cavity, pharynx, larynx, or esophagus. The goal of dysphagia rehabilitation is to identify and treat abnormalities of feeding and swallowing while maintaining safe and efficient alimentation and hydration.
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Affiliation(s)
- Koichiro Matsuo
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University, Phipps 160 600 North Wolfe Street, Baltimore, MD 21287, USA
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Abstract
PURPOSE OF REVIEW Swallowing disorders impact the health and quality of millions of lives of patients across the age spectrum. The broad scope of the problem is in contrast to the volume of methods that we have to treat the problem. Investigators are testing interventions that go beyond the swallowing system and are targeting those that cross or overlap with swallowing function. This review will highlight the potential clinical implications of respiratory-swallowing cross-system interaction in health and disease. RECENT FINDINGS A collection of current studies demonstrates a tight neural coupling between the central control of respiration and swallowing. Results from recent studies suggest that this neural coupling may be altered under certain conditions of development, age, disease, and eating/swallowing tasks. SUMMARY The functional significance of cross-system neural control on respiratory-swallowing coordination is far from understood. Preliminary data, however, show destabilization of respiratory-swallowing patterns in various neurological diseases and in head and neck cancer. These findings suggest the need to develop a line of research that tests the effects of therapeutic strategies that transcend swallowing and include cross-system interactions such as respiratory-swallow phase patterning.
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Current World Literature. Curr Opin Otolaryngol Head Neck Surg 2008; 16:292-5. [DOI: 10.1097/moo.0b013e3283041256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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