Hydrocephalus, Normal PressureNCT04309487
Diagnostic Accuracy of ShuntCheck Compared to Radionuclide Shunt: Patency in Patients With Normal Pressure Hydrocephalus
An observational study of Hydrocephalus, Normal Pressure, run by University of South Florida at 1 site in United States.
Trial summary
The purpose of this study is to assess the diagnostic accuracy of ShuntCheck compared with radionuclide shunt patency testing (SPS) to detect CSF shunt flow of NPH patients with suspected shunt obstruction. Read more about this study
- Who is it for?
- Ages 40 years and older
- Conditions the study is for
- Hydrocephalus, Normal Pressure
- What is being tested?
- ShuntCheck
- How many people
- 20 participants
- Where
- 1 siteUnited States
- Study dates
- 24 Jan 2020to Jan 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 years and older
- All sexes
- Adult, Older adult
Study population: The study population will consist of NPH hydrocephalus research subjects who have a VP shunt with a single ventricular catheter implanted for adult hydrocephalus are suspected of shunt obstruction and are scheduled for a radionuclide SPS.
Who may be able to join
- Men or women 40 yo or older and have a VP shunt placed for NPH and are suspected of shunt obstruction.
- Capable of providing valid signed informed consent, or has a legal guardian, health care agent, or surrogate decision maker (according to local statutes, and collectively referred to as "surrogates" in this protocol) capable of providing valid, signed informed consent
Who cannot join
- Presence of multiple shunts, or presence of more than one distal shunt catheter (regardless of function) crossing the clavicle ipsilateral to the shunt with suspected obstruction;
- ShuntCheck test would interfere with standard patient care, or emergency shunt surgery that cannot be delayed is indicated;
- Presence of an interfering open wound or edema over any portion of the VP shunt.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
University of South Florida Department of Neurological Surgery and Brain Repair
Tampa, Florida, 33606
Naomi Abel, MD, 813 259-0904, nabel@usf.edu
Konrad Bach, MD, 813 259-8898, kbach@usf.edu
About this study
Official title: Diagnostic Accuracy of ShuntCheck Compared With Radionuclide Shunt Patency Test to Detect Shunt Flow Obstruction in Patients With Normal Pressure Hydrocephalus - A Cross-sectional Analytic Study
The purpose of this study is to assess the diagnostic accuracy of ShuntCheck compared with radionuclide shunt patency testing (SPS) to detect CSF shunt flow of NPH patients with suspected shunt obstruction.
Read the detailed description
The purpose of this study is to assess the diagnostic accuracy of ShuntCheck compared with radionuclide shunt patency testing (SPS) to detect CSF shunt flow of NPH patients with suspected shunt obstruction.
- Conditions
- Hydrocephalus, Normal Pressure
- Being tested
- ShuntCheck
- Keywords
- Asymptomatic Normal Pressure Hydrocephalus, Ventriculoperitoneal Shunt
- Medical subject headings
- Hydrocephalus, Normal Pressure
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ShuntCheckDiagnostic test
The intervention is an FDA-cleared device utilizing a transcutaneous thermal convection to analyze shunt flow.
| Study group | Role | What they receive |
|---|---|---|
| ShuntCheck | Participants will be administered the ShuntCheck diagnostic test. Receives: Diagnostic Test: ShuntCheck |
What is being measured
The primary outcome is the main question the study is designed to answer.
Sensitivity of ShuntCheck compared to radionuclide shunt patency study
Measured: 15 minutes
Negative Predictive Value of ShuntCheck compared to radionuclide shunt patency study
Measured: 60 Minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Mar 2020
- Study start24 Jan 2020
- Primary completionJan 2027 (estimated)
- Study completionJan 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hydrocephalus, Normal PressureStudies of the same condition, open and under way.
- More trials run by University of South FloridaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of South Florida
- Sponsor type
- University, hospital or other
- Collaborators
- NeuroDx Development
- Responsible party
- Principal investigator, Naomi Abel, University of South Florida
- Investigators
- Naomi Abel, MD, Principal investigator, University of South Florida
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04309487
- Sponsor's protocol ID
- Pro00041345
- Status last verified
- May 2026
- First submitted
- 12 Mar 2020
- Last updated
- 18 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: At present there is no plan to share any individual participant data.
Study at a glance
From the registry record, last updated by the sponsor on 18 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Diagnostic Accuracy of ShuntCheck Compared With Radionuclide Shunt Patency Test to Detect Shunt Flow Obstruction in Patients With Normal Pressure Hydrocephalus - A Cross-sectional Analytic Study
- ClinicalTrials.gov ID
- NCT04309487
- Acronym / sponsor ID
- Pro00041345
- Conditions
- Hydrocephalus, Normal Pressure
- Keywords
- Asymptomatic Normal Pressure Hydrocephalus, Ventriculoperitoneal Shunt
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- University of South FloridaUniversity, hospital or other
- Collaborators
- NeuroDx Development
- Study start
- 24 Jan 2020 (actual)
- Primary completion
- Jan 2027 (estimated)
- Study completion
- Jan 2027 (estimated)
- First posted
- 16 Mar 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to assess the diagnostic accuracy of ShuntCheck compared with radionuclide shunt patency testing (SPS) to detect CSF shunt flow of NPH patients with suspected shunt obstruction.
Detailed description
The purpose of this study is to assess the diagnostic accuracy of ShuntCheck compared with radionuclide shunt patency testing (SPS) to detect CSF shunt flow of NPH patients with suspected shunt obstruction.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| ShuntCheck | – | Diagnostic Test: ShuntCheckParticipants will be administered the ShuntCheck diagnostic test. |
Who may qualify
- Ages
- 40 years and older
- Sex
- All
- Age groups
- Adult, Older adult
- Study population
- The study population will consist of NPH hydrocephalus research subjects who have a VP shunt with a single ventricular catheter implanted for adult hydrocephalus are suspected of shunt obstruction and are scheduled for a radionuclide SPS.
Key inclusion criteria (2 listed)
- Men or women 40 yo or older and have a VP shunt placed for NPH and are suspected of shunt obstruction.
- Capable of providing valid signed informed consent, or has a legal guardian, health care agent, or surrogate decision maker (according to local statutes, and collectively referred to as "surrogates" in this protocol) capable of providing valid, signed informed consent
Key exclusion criteria (3 listed)
- Presence of multiple shunts, or presence of more than one distal shunt catheter (regardless of function) crossing the clavicle ipsilateral to the shunt with suspected obstruction;
- ShuntCheck test would interfere with standard patient care, or emergency shunt surgery that cannot be delayed is indicated;
- Presence of an interfering open wound or edema over any portion of the VP shunt.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ShuntCheckThe intervention is an FDA-cleared device utilizing a transcutaneous thermal convection to analyze shunt flow. | Diagnostic test | ShuntCheck |
Primary outcome
Sensitivity of ShuntCheck compared to radionuclide shunt patency study
Time frame: 15 minutes
Negative Predictive Value of ShuntCheck compared to radionuclide shunt patency study
Time frame: 60 Minutes
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 May 2026.
- Individual participant dataSharing planned: No. At present there is no plan to share any individual participant data.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Naomi Abel, MD principal investigator
University of South Florida
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Hydrocephalus, Normal Pressure, run by University of South Florida at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 18 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Naomi Abel, MD (813 259-0904, nabel@usf.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Sensitivity of ShuntCheck compared to radionuclide shunt patency study (time frame: 15 minutes). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 May 2026; AzTrials last refreshed its copy on 8 Nov 2026.