Normative Swallowing Physiological Metrics of Pharyngeal High-Resolution Impedance Manometry in Chinese Adults

Normative Swallowing Physiological Metrics of Pharyngeal High-Resolution Impedance Manometry and Videofluoroscopic Swallowing Study in Chinese Adults

As Taiwan enters a super-aged society in 2025, the number of elderly patients and patients with multiple comorbidities continues to increase, and the risk of dysphagia rises with advancing age. Due to neuronal degeneration and muscle atrophy, older adults often experience delayed recovery of swallowing function after general anesthesia, and it may take up to seven days to regain their baseline swallowing ability. Therefore, postoperative monitoring of swallowing function and early rehabilitative intervention are crucial for reducing complication risks and facilitating early discharge.

Currently, there is limited literature regarding normative data for pharyngeal swallowing assessment using high-resolution pharyngeal manometry with impedance as well as videofluoroscopic swallowing studies in the Chinese population. This project aims to recruit 80 healthy adults to establish normative reference values.

Study Overview

• Status: Not yet recruiting
• Conditions: Hypopharyngeal Peak Pressure

Detailed Description

To ensure relative consistency in the physiological, pathological, and psychological conditions of participants, this study will recruit 80 healthy adults without swallowing difficulties using convenience sampling from outpatient clinics and the general healthy population at National Taiwan University Hospital (NTUH). All participants will undergo both videofluoroscopic swallowing study (VFSS) and high-resolution pharyngeal manometry with impedance (HRIM). Inclusion criteria include adults aged ≥18 years without subjective dysphagia. Exclusion criteria include major systemic diseases (e.g., heart failure, liver cirrhosis, end-stage renal disease, scleroderma, or diabetes mellitus), history of vasovagal syncope, acute inflammation, nasal or esophageal stenosis/obstruction, upper gastrointestinal symptoms within the past 3 months, use of medications affecting gastrointestinal motility, recent anticoagulant or antiplatelet use within 1 week before enrollment, or bleeding tendency. After informed consent is obtained, participants will fast for 4-8 hours before testing. Assessments will include a rapid swallowing test, anthropometric measurements and InBody analysis, limb ultrasound and muscle strength evaluation using the MicroFET2™ wireless handheld dynamometer and handgrip dynamometer, ultrasonographic assessment of hyoid bone movement and swallowing-related muscles (e.g., masseter muscle), HRIM and VFSS examinations, and blood sampling (5 cc) for biochemical analysis including LDL, HDL, cholesterol, white blood cell count, and hemoglobin.

• Study Type: Observational
• Enrollment (Estimated): 80

Contacts and Locations

• Study Contact: Name: Chi-Jun Lai; Phone Number: 0972652086; Email: littlecherrytw@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Non-Probability Sample

Study Population

normal patients withour dysphagia

Description

Inclusion Criteria:

• Adults aged 18 years or older without subjective swallowing difficulty.

Exclusion Criteria:

• (1) Major systemic diseases, including heart failure, liver cirrhosis, end-stage renal disease, scleroderma, or diabetes mellitus; (2) History of vasovagal syncope, acute inflammation, or nasal or esophageal stenosis/obstruction; (3) Presence of upper gastrointestinal symptoms within the past 3 months, including dysphagia, chest pain, heartburn, reflux, or globus sensation; (4) Current use of medications that may affect gastrointestinal motility; (5) Use of anticoagulant or antiplatelet agents within 1 week prior to enrollment; or (6) History of bleeding tendency.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
hypopharyngeal mean peak pressure	pharyngeal contraction	15 min

Collaborators and Investigators

• Sponsor: National Taiwan University Hospital

Study record dates

Study Major Dates

• Study Start (Estimated): May 20, 2026
• Primary Completion (Estimated): December 31, 2031
• Study Completion (Estimated): December 31, 2032

Study Registration Dates

• First Submitted: May 13, 2026
• First Submitted That Met QC Criteria: May 13, 2026
• First Posted (Actual): May 19, 2026

Study Record Updates

• Last Update Posted (Actual): May 19, 2026
• Last Update Submitted That Met QC Criteria: May 13, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: normal value; high resolution impedance manometry
• Other Study ID Numbers: 202603162RINA

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No