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Bayona HHG, Inamoto Y, Saitoh E, Aihara K, Kobayashi M, Otaka Y. Prediction of Pharyngeal 3D Volume Using 2D Lateral Area Measurements During Swallowing. Dysphagia 2024; 39:783-796. [PMID: 38245902 DOI: 10.1007/s00455-023-10659-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/15/2023] [Indexed: 01/23/2024]
Abstract
This study evaluated the validity of pharyngeal 2D area measurements acquired from the lateral view for predicting the actual 3D volume in healthy adults during swallowing. Seventy-five healthy adults (39 females, 36 males; mean age 51.3 years) were examined using 320-row area detector computed tomography (320-ADCT). All participants swallowed a 10 mL honey-thick barium bolus upon command while seated in a 45° semi-reclining position. Multi-planar reconstruction images and dynamic 3D-CT images were obtained using Aquilion ONE software. Pharyngeal 2D area and 3D volume measurements were taken before swallowing and at the frame depicting maximum pharyngeal constriction. Pharyngeal volume before swallowing (PVhold) was accurately predicted by 2D area (R2 = 0.816). Adding height and sex to the model increased R2 to 0.836. Regarding pharyngeal volume during maximum constriction (PVmax), 2D area also exhibited acceptable predictive power (R2 = 0.777). However, analysis of statistical residuals and outliers revealed a greater tendency for prediction errors when there is less complete constriction of the pharynx as well as asymmetry in bolus flow or movement. Findings highlight the importance of routinely incorporating anterior-posterior views during VFSS exams. Future work is needed to determine clinical utility of pharyngeal volume measurements derived from 320-ADCT.
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Affiliation(s)
- Howell Henrian G Bayona
- Graduate School of Health Sciences, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan
| | - Yoko Inamoto
- Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
| | - Eichii Saitoh
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan
| | - Keiko Aihara
- Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan
| | - Masanao Kobayashi
- Faculty of Radiology, School of Medical Sciences, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan
| | - Yohei Otaka
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan
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Accuracy of High-Resolution Pharyngeal Manometry Metrics for Predicting Aspiration and Residue in Oropharyngeal Dysphagia Patients with Poor Pharyngeal Contractility. Dysphagia 2022; 37:1560-1575. [PMID: 35182246 DOI: 10.1007/s00455-022-10417-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 02/07/2022] [Indexed: 12/16/2022]
Abstract
Several physiological metrics can be derived from pharyngeal high-resolution impedance manometry (HRPM), but their clinical relevance has not been well established. We investigated the diagnostic performance of these metrics in relation to videofluoroscopic (VFS) assessment of aspiration and residue in patients with oropharyngeal dysphagia. We analyzed 263 swallows from 72 adult patients (22-91 years) with diverse medical conditions. Metrics of contractility, upper esophageal sphincter (UES) opening and relaxation, flow timing, intrabolus distension pressure, and a global Swallow Risk Index (SRI) were derived from pressure-impedance recordings using pressure-flow analysis. VFS data were independently scored for airway invasion and pharyngeal residue using the Penetration-Aspiration Scale and the Normalized Residue Ratio Scale, respectively. We performed multivariate logistic regression analyses to determine the relationship of HRPM metrics with radiological outcomes and receiver-operating characteristic (ROC) analysis to evaluate their diagnostic accuracy. We identified aspiration in 25% and pharyngeal residue in 84% of the swallows. Aspiration was independently associated with hypopharyngeal peak pressure < 65 mmHg (HypoPeakP) [adjusted odds ratio (OR) 5.27; 95% Confidence Interval (CI) (0.99-28.1); p = 0.051], SRI > 15 [OR 4.37; 95% CI (1.87-10.2); p < 0.001] and proximal esophageal contractile integral (PCI) < 55 mmHg·cm·s [OR 2.30; 95% CI (1.07-4.96); p = 0.034]. Pyriform sinus residue was independently predicted by HypoPeakP < 65 mmHg [OR 7.32; 95% CI (1.93-27.7); p = 0.003], UES integrated relaxation pressure (UES-IRP) > 3 mmHg [OR 2.96; 95% CI (1.49-5.88); p = 0.002], and SRI > 15 [OR 2.17; 95% CI (1.04-4.51); p = 0.039]. Area under ROC curve (AUC) values for individual HRPM metrics ranged from 0.59 to 0.74. Optimal cut-off values were identified. This study demonstrates the diagnostic value of certain proposed and adjunct HRPM metrics for identifying signs of unsafe and inefficient bolus transport in patients with oropharyngeal dysphagia.
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Edeani FO, Kern M, Ulualp K, Kovacic K, Sanvanson P, Mei L, Shaker R. Variables influencing manometric parameters of deglutitive and non-deglutitive upper esophageal sphincter: A study of 89 asymptomatic participants. Neurogastroenterol Motil 2022; 34:e14175. [PMID: 34431179 PMCID: PMC10128622 DOI: 10.1111/nmo.14175] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/19/2021] [Accepted: 04/28/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND High-resolution manometry overcomes limitations imposed by axial and radial asymmetry as well as swallow and respiration-induced movement of the upper esophageal sphincter (UES), allowing for its reliable use in evaluation of dysphagic and reflux patients. The aim of this study was to determine normative values and their variability across position, sex, age, height, weight, BMI, and volume for clinically relevant deglutitive and non-deglutitive UES parameters. METHODS We studied 89 asymptomatic volunteers age 19-90 years, (45 female) during 3-10 repetitions of dry, 5 and 10 ml water swallows at 30-s intervals using high-resolution manometry. KEY RESULTS Upper esophageal sphincter high-pressure zone was longer in men than women and in supine than upright position. UES basal contractile integral and mean basal pressure were higher in supine compared to upright; higher in men than women, inversely correlated with age, correlated positively with height and with weight in the supine position only. UES relaxation duration was longer in upright than in supine position but not affected by age, sex, height, weight, or BMI. It was longer with 5 and 10 ml compared with dry swallows. UES minimum/nadir relaxation and mean relaxation pressures were lower in upright than supine position, increased with increase in age and were higher in men than women. CONCLUSIONS AND INFERENCES Position, sex, age, height, weight, and volume affect some deglutitive and non-deglutitve UES manometric parameters. BMI does not affect the studied manometric parameters. These effects should be taken into consideration in clinical evaluation of UES.
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Affiliation(s)
- Francis O Edeani
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Mark Kern
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Kenan Ulualp
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Karlo Kovacic
- Center for Pediatric Neurogastroenterology, Motility, and Autonomic Disorders, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Patrick Sanvanson
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Ling Mei
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Reza Shaker
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin, Milwaukee, WI, USA
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High-Resolution Pharyngeal Manometry and Impedance: Protocols and Metrics-Recommendations of a High-Resolution Pharyngeal Manometry International Working Group. Dysphagia 2019; 35:281-295. [PMID: 31168756 DOI: 10.1007/s00455-019-10023-y] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 03/28/2019] [Accepted: 05/25/2019] [Indexed: 02/08/2023]
Abstract
High-resolution manometry has traditionally been utilized in gastroenterology diagnostic clinical and research applications. Recently, it is also finding new and important applications in speech pathology and laryngology practices. A High-Resolution Pharyngeal Manometry International Working Group was formed as a grass roots effort to establish a consensus on methodology, protocol, and outcome metrics for high-resolution pharyngeal manometry (HRPM) with consideration of impedance as an adjunct modality. The Working Group undertook three tasks (1) survey what experts were currently doing in their clinical and/or research practice; (2) perform a review of the literature underpinning the value of particular HRPM metrics for understanding swallowing physiology and pathophysiology; and (3) establish a core outcomes set of HRPM metrics via a Delphi consensus process. Expert survey results were used to create a recommended HRPM protocol addressing system configuration, catheter insertion, and bolus administration. Ninety two articles were included in the final literature review resulting in categorization of 22 HRPM-impedance metrics into three classes: pharyngeal lumen occlusive pressures, hypopharyngeal intrabolus pressures, and upper esophageal sphincter (UES) function. A stable Delphi consensus was achieved for 8 HRPM-Impedance metrics: pharyngeal contractile integral (CI), velopharyngeal CI, hypopharyngeal CI, hypopharyngeal pressure at nadir impedance, UES integrated relaxation pressure, relaxation time, and maximum admittance. While some important unanswered questions remain, our work represents the first step in standardization of high-resolution pharyngeal manometry acquisition, measurement, and reporting. This could potentially inform future proposals for an HRPM-based classification system specifically for pharyngeal swallowing disorders.
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Abstract
PURPOSE OF REVIEW High-resolution pharyngeal manometry (HRPM) is a well tolerated, catheter-based, method for recording the pressures and bolus flow generated by the pharyngeal muscles during swallowing. Despite a body of published evidence and a critical mass of investigators in the field, there is a lack of consensus surrounding what biomechanical phenomena to measure. The purpose of this review is to provide some insights into the information on swallowing physiology that can be gathered using HRPM. RECENT FINDINGS HRPM literature has focused on measuring biomechanical phenomena that may be relevant to measure in relation to dysphagia research. This review focuses on the measurement of pharyngeal luminal occlusive forces, intrabolus distension pressure, bolus presence and bolus flow timing as key features of pharyngeal swallowing that require measurement and allow for derivation of the Swallow Risk Index, a global measure of swallow function indicative of swallowing functional reserve. SUMMARY HRPM allows objective derivation of measures of swallow function that may have value for diagnosis and research in relation to swallowing disorders. HRPM has demonstrated clinical applicability in specific patient populations and offers unique advantages that compliment current assessment methods.
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Agrawal D, Kern M, Edeani F, Balasubramanian G, Hyngstrom A, Sanvanson P, Shaker R. Swallow strength training exercise for elderly: A health maintenance need. Neurogastroenterol Motil 2018; 30:e13382. [PMID: 29956861 PMCID: PMC6160333 DOI: 10.1111/nmo.13382] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 04/22/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent studies have shown high prevalence of oropharyngeal dysphagia associated with frailty- and age-related muscle weakness. Strength training exercises have been advocated for locomotive health maintenance in the elderly and have shown positive outcomes. As muscles involved in oropharyngeal phase of swallowing are also comprised of striated muscles, the aim of this study was to determine biomechanical effect of a novel resistance exercise program, Swallowing Against Laryngeal Restriction (SALR), on pharyngeal phase swallowing in the healthy elderly. METHODS A total of 28 volunteers (75 + 7 years; 17 females) with no complaint of dysphagia were studied using video fluoroscopy before and after 6 weeks of the swallow strength training exercise. Eighteen of these volunteers also underwent high-resolution pharyngeal manometry non-concurrent with fluoroscopy. Ten additional volunteers (81 + 6 years; 9 females) were studied by videofluoroscopy before and after 6 weeks of a sham exercise. KEY RESULTS Swallow resistance exercise but not the sham exercise resulted in a significant increase in maximum upper esophageal sphincter opening (P < .01), superior and anterior laryngeal excursion (P < .01) as well as posterior pharyngeal wall thickness (P < .01). Resistance exercise but not sham exercise also resulted in a significant increase in deglutitive pharyngeal contractile integral (P < .01). CONCLUSIONS & INFERENCES Strength training of muscles involved in the pharyngeal phase of swallowing using the swallowing against laryngeal restriction technique is feasible and significantly improves key physiologic features of the pharyngeal phase of swallowing. These findings provide the basis for consideration of developing an exercise-based swallow health maintenance program for the elderly swallow health maintenance program for the elderly.
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Affiliation(s)
- Dilpesh Agrawal
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin
| | - Mark Kern
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin
| | - Francis Edeani
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin
| | | | - Allison Hyngstrom
- College of Health Sciences Physical Therapy, Marquette University Milwaukee, WI, USA
| | - Patrick Sanvanson
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin
| | - Reza Shaker
- Division of Gastroenterology and Hepatology, Medical College of Wisconsin
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Jadcherla SR, Prabhakar V, Hasenstab KA, Nawaz S, Das J, Kern M, Balasubramanian G, Shaker R. Defining pharyngeal contractile integral during high-resolution manometry in neonates: a neuromotor marker of pharyngeal vigor. Pediatr Res 2018; 84:341-347. [PMID: 29976974 PMCID: PMC6258262 DOI: 10.1038/s41390-018-0097-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/17/2018] [Accepted: 06/16/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Pharyngeal contractility is critical for safe bolus propulsion. Pharyngeal contractile vigor can be measured by Pharyngeal Contractile Integral (PhCI): product of mean pharyngeal contractile amplitude, length, and duration. We characterized PhCI in neonates and examined the hypothesis that PhCI differs with mode of stimulation. METHODS Nineteen neonates born at 38.6 (34-41) weeks gestation were evaluated at 42.9 (40.4-44.0) weeks postmenstrual age using high-resolution manometry (HRM). PhCI was calculated using: (a) Conventional and (b) Automated Swallow Detection algorithm (ASDA) methods. Contractility metrics of all pharyngeal regions were examined using mixed statistical models during spontaneous and adaptive state (pharyngeal and oral stimulus) swallowing. RESULTS PhCI of oral stimuli swallows were distinct from pharyngeal stimuli and spontaneous swallows (P < 0.05). Correlation between conventional and ASDA methods was high (P < 0.001). PhCI increased with swallows for pharyngeal stimulation (P < 0.05) but remained stable for swallows with oral stimulation. PhCI differed between proximal and distal pharynx (P < 0.001). CONCLUSIONS PhCI is a novel reliable metric capable of distinguishing (1) proximal and distal pharyngeal activity, (2) effects of oral and pharyngeal stimulation, and (3) effects of prolonged stimulation. Changes in pharyngeal contractility with maturation, disease, and therapies can be examined with PhCI.
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Affiliation(s)
- Sudarshan R. Jadcherla
- Innovative Infant Feeding Disorders Research Program; The Research Institute at Nationwide Children’s Hospital, Columbus, OH,Division of Neonatology, Pediatric Gastroenterology and Nutrition; Department of Pediatrics; The Ohio State University College of Medicine, Columbus, OH
| | - Varsha Prabhakar
- Innovative Infant Feeding Disorders Research Program; The Research Institute at Nationwide Children’s Hospital, Columbus, OH
| | - Kathryn A. Hasenstab
- Innovative Infant Feeding Disorders Research Program; The Research Institute at Nationwide Children’s Hospital, Columbus, OH
| | - Saira Nawaz
- Innovative Infant Feeding Disorders Research Program; The Research Institute at Nationwide Children’s Hospital, Columbus, OH
| | - Jayajit Das
- Center for Mathematical Medicine, The Research Institute at Nationwide Children’s Hospital, Columbus, OH
| | - Mark Kern
- Division of Gastroenterology and Hepatology and Internal Medicine; Medical College of Wisconsin, Milwaukee, WI
| | | | - Reza Shaker
- Division of Gastroenterology and Hepatology and Internal Medicine; Medical College of Wisconsin, Milwaukee, WI
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