Changes in Sensitivity, Taste and Smell in Stroke Patients (5S)

November 30, 2023 updated by: Tobias Braun, University of Giessen

Changes in Sensitivity of Swallowing-relevant Structures, Taste and Smell in Stroke Patients

This study evaluates changes in swallowing using endoscopic swallowing studies and measuring of pharyngeal sensitivity, taste and smell in stroke patients. Younger (<60 years) and older (>60 years) volunteers will serve as control.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Stroke is the second leading cause of death. At least 50% of stroke patients develop dysphagia, leading to aspiration pneumonia, which is the main cause of death in stroke [2].

It is assumed that normal sensitivity is vital for aspiration-free swallowing and for the triggering of the swallowing reflex.

Ali et al. demonstrated aspiration-free swallowing in healthy volunteers who underwent local anaesthesia of oral and pharyngeal structures [1]. Power et al. showed a reduced sensitivity of pharyngeal structures in stroke patients prone to aspiration [3].

By combining measuring sensitivity and flexible endoscopic swallowing studies, this study further investigates the role of sensitivity in swallowing Neuropsychological deficits of swallowing, such as swallowing apraxia or buccal hemineglect, is assessed by neuropsychological testing.

Additionally, there is no systematic research investigating the change in smell and taste in correlation with changes in stroke patients

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
200

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Stroke patients are recruited in a university hospital's department of neurology.

Volunteers >60years are recruited in a trauma surgery ward at the same university hospital.

Volunteers <60 are recruited without specified characteristics (aside from in-/exclusion criteria).

Description

Inclusion Criteria:

Volunteers:

  • informed consent

Stroke patients:

  • informed consent
  • new supratentorial stroke (<72 hours old) confirmed by CT (computed tomography) or MRI (magnetic resonance imaging)

Exclusion Criteria:

  • pre-existing stroke oder dysphagia
  • extensive white matter lesions in CT- or MRI-scan
  • allergies to odorous substances or flavoring
  • contraindications for FEES (flexible endoscopic evaluation of swallowing), CT or MRI (stroke patients only)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Volunteers <60 years
Volunteers, who are able to consent to participation in the study, as control.
Other: Sensitivity threshold
Determining sensitivity threshold using a pudendal electrode
Diagnostic test: Taste-/smell-test
Taste-/smell-test
Volunteers >60 years
Volunteers, who are able to consent to participation in the study, as control.
Other: Sensitivity threshold
Determining sensitivity threshold using a pudendal electrode
Diagnostic test: Taste-/smell-test
Taste-/smell-test
Stroke patients
Stroke patients with supratentorial stroke, who are able to consent to participation in the study.
Other: Sensitivity threshold
Determining sensitivity threshold using a pudendal electrode
Diagnostic test: Taste-/smell-test
Taste-/smell-test
Diagnostic test: FEES (flexible endoscopic evaluation of swallowing)
Endoscopical swallowing study in stroke patients only
Diagnostic test: Neuropsychological testing
Neuropsychological testing for neglect, agnosia

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Dysphagia
Time Frame: 96 hours after initial symptoms

Changes found in endoscopic swallowing study :

Presence and severity of dysphagia (measured with Rosenbek's Penetration/Aspiration-scale)
96 hours after initial symptoms

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Neuropsychological deficits
Time Frame: 96 hours after initial symptoms
Agnosia, neglect
96 hours after initial symptoms
Lesion site
Time Frame: 96 hours after initial symptoms
Side, vascular territory, swallowing relevant structures
96 hours after initial symptoms
Sensitivity
Time Frame: 96 hours after initial symptoms
Sensitivity of faucial pillar region
96 hours after initial symptoms
Taste/Smell
Time Frame: 96 hours after initial symptoms
Smell-/Taste-score
96 hours after initial symptoms

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Giessen

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Tobias Braun, M.D., University Giessen

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2017

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 1, 2025

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 28, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 1, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 7, 2017

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 1, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 30, 2023

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2023

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • GI-149/16

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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