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RecruitingNCT06333366Updated Mar 27, 2024

First-In-Human Study of PDT to Detect IAH

An interventional study of Intra-gastrointestinal monitoring device (PDT) in Intra-Abdominal Hypertension, sponsored by Chang Gung Memorial Hospital. Recruiting at 1 site in Taiwan. Open to participants aged 20 Years to 55 Years. Per ClinicalTrials.gov, last updated 2024-03-27.

Sponsored by Chang Gung Memorial Hospital · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Primary completion was expected by Jul 2024, 2 years 2 months ago, but the record still lists the study as recruiting.
  • Started Feb 2024; still recruiting 2 years 7 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
20 Years to 55 Years
Sex
All
01

Study summary

PDT is a continuous pressure monitoring for Intra-Abdominal hypertension (IAH) designed to be less invasive than pan-endoscopic evaluation, more tolerable than abdominal tapping, and more effective than intravesical pressure measurement for IAH. The PDT device consists of a piezoelectric sensor module with a low power Bluetooth wireless transmitter encased in biocompatible capsule. The device will be swallowed after activation. Following PDT insertion, the patient is fitted with a custom, removable external waist accessory containing a receiver, which is worn during monitoring and provide PDT location by signal analysis with sufficient information to provide IAH trends.

Read the detailed description

The participant will receive first phantom capsule after complete survey before the test, which include standard clinical intra-vesical pressure measurement in the perioperative period of laparoscopic surgery. The phantom capsule is an equal-weighted device of the same outer shell but without the electric circuits. After the phantom capsule has been passed out, the participant will receive the standard PDT capsule to record measured information continuously. The date of the laparoscopic surgery should be within follow-up day 2 to day 6. Standard clinical intra-vesical pressure measurement will only be applied in the perioperative period of laparoscopic surgery. The participant will still be monitored by standard PDT capsule afterwards. After the PDT capsule passed out, the participant will receive complete checkup again for comparison.

02

Conditions studied

  • Intra-Abdominal Hypertension

Keywords

  • Intra-Abdominal hypertension
  • Intravesical pressure
  • Intra-gastrointestinal monitoring device
  • laparoscopic surgery
  • Abdominal compartment Syndrome
03

In context

Intra-Abdominal Hypertension

61 studies on the registry are indexed under Intra-Abdominal Hypertension; 12 are open to participants now.

This study's planned enrollment of 10 is below the median of 60 across 29 interventional studies indexed under Intra-Abdominal Hypertension.

Browse Intra-Abdominal Hypertension studies →

Lead sponsor

Chang Gung Memorial Hospital is the lead sponsor of 1,064 studies on the registry; 235 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patient volunteer planning for laparoscopic surgery
  • Subjects willing to sign an informed consent form (ICF),
  • Adult subjects, age ≥ 20 and age ≤ 80 years old
  • BMI between 15(kg/m2)- 35(kg/m2)
  • Subjects willing to comply to study protocol requirements (blood pressure measurement, diet, alcohol, study visits, blood sampling, etc.)
  • Patient who had been scheduled for any laparoscopic surgery which may alter intra-abdominal pressure.
  • Patient volunteer planning for laparoscopic surgery, as self-declared and confirmed by screening assessments and Principal Investigator's judgment

Exclusion criteria

Exclusion Criteria:

  • Patients with a high risk for capsule retention (such as intestinal diverticula, acute abdominal pain without regular defecation indicating intestinal obstruction or a history of abdominal operation or intestinal reconstructed operation),
  • Any evidence that occlusion of gastrointestinal tract is obvious or severe paralytic ileus that may result in intra-abdominal hypertension in need of immediate surgical intervention not caused by base of tongue (i.e., central apnea, neurologic disorder, retropalatal collapse, nasal obstruction)
  • Any condition that subject is expected to undergo MRI examination within 7 days after ingestion of the capsule.
  • Any factor that, in the surgeon's judgment, would pose a risk to surgery or placement of an intra-gastrointestinal monitoring device
  • Any factor that, in the surgeon's judgment, would make the subject unlikely to respond to PDT insertion and pressure measurement.
  • Congenital anomalies of gastrointestinal tract or any other anatomical abnormality of the head, neck, chest, or abdomen that would be a contraindication to placement of the PDT device and usage of the external device
  • There are no exclusion criteria based on gender, race or ethnicity
  • Patients with a history of Crohn's disease i* Patients with serious systematic diseases such as congestive heart failure, renal failure or severe liver disease.
  • Any blood disorder identified by haematocrit \<30% or >55%
  • History of hepatitis B, hepatitis C, or HIV
  • Subject has had prior abdominal surgery of the gastrointestinal tract other than uncomplicated procedures that would be unlikely to lead to bowel obstruction based on the clinical judgment of the investigator
  • Female subjects who are pregnant, planning on becoming pregnant or nursing
  • Any disorder, which in the investigator's opinion might jeopardise subject's safety or compliance with the protocol.
  • Coagulation disorder, wound healing and bleeding disorder or taking anticoagulant medication
  • The presence of any other active implanted device, such as cardiac pacemaker or other implanted electro medical devices.
  • The presence of any other wireless sensor or transmitter located in abdomen (excluding compatible device also for pressure sensing and other location is acceptable)
  • Impaired fasting glucose or impaired glucose tolerance (for Patient volunteer planning for laparoscopic surgery)
  • Any contraindication to the use of the PDT system as listed in the device Instructions for Use (IFU) (i.e. any known allergy to PDMS)
  • Subject has dysphagia
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    intraabdominal pressure (IAP) monitor

    Patient who will take laparoscopic surgery will be checked for intra-abdominal pressure, intra-vesical pressure, and intra-gastrointestinal pressure ri-operative stage. PDT passage time will be checked.

    Device: Intra-gastrointestinal monitoring device (PDT)

Interventions

  • DeviceIntra-gastrointestinal monitoring device (PDT)

    The PressureDOT(PDT) is an active intra-gastrointestinal device, that is intended to be introduced in the gastrointestinal tract, approximately along whole. The device is battery powered. The signal is wirelessly transmitted through outside the body and received by waist receiver, using an antenna array applied to the skin with a protection guard at the level of the abdomen.

06

What researchers measure

Primary outcomes

  1. Incidence of device-related or sensor insertion/removal procedure-related adverse events

    evaluating of incidence of adverse event (AE)

    Time frame: 15 days

  2. Rate of foreign body reaction due intra-gastrointestinal insertion

    evaluating GI symptoms

    Time frame: 15 days

  3. Rate of GI symptoms, i.e. inflammation, infection, diarrhea, bowel obstruction, and ileus

    evaluating safety

    Time frame: 15 days

  4. Incidence of sensor failure

    evaluating stability of device

    Time frame: 15 days

Secondary outcomes

  1. Percentage of users feedback in the form of clinical questionnaire to assess the 'easiness' of insertion procedure with questionnaire

    evaluating feed back

    Time frame: 1 day

  2. Duration of PDT insertion and explantation procedure

    monitoring usability needs

    Time frame: 15 days

  3. Incidence of side effects in Post explantation follow-up

    follow up for sequel

    Time frame: 30 days

  4. Rate of GI dysfunction after 10 days post explantation of the PDT sensor. Follow-up via phone call after 30 days

    monitoring of GI symptoms

    Time frame: 30 days

Other outcomes

  1. Rate of sensor ability to measure intra-gastrointestinal pressure (IGP) to allow the development of the algorithm

    workup for correlation

    Time frame: 5 days

  2. Incidence of influence of interference substances (i.e. water, saliva, gastric juice, bile, intestinal secretion, feces, and food debris )

    evaluating feasibility of working condition

    Time frame: 7 days

07

Study locations

1 of 1 sites recruiting
  • Dong-Ru Ho
    Chiayi City, 60061, Taiwan
    Recruiting
08

References and documents

Publications

  • Liao CH, Cheng CT, Chen CC, Wang YH, Chiu HT, Peng CC, Jow UM, Lai YL, Chen YC, Ho DR. Systematic Review of Diagnostic Sensors for Intra-Abdominal Pressure Monitoring. Sensors (Basel). 2021 Jul 15;21(14):4824. doi: 10.3390/s21144824. PubMed 34300564 ↗
  • Liao CH, Cheng CT, Chen CC, Jow UM, Chen CH, Lai YL, Chen YC, Ho DR. An Ingestible Electronics for Continuous and Real-Time Intraabdominal Pressure Monitoring. J Pers Med. 2020 Dec 24;11(1):12. doi: 10.3390/jpm11010012. PubMed 33374271 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 27, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06333366
Lead sponsor
Chang Gung Memorial Hospital
Collaborators
DOTSPACE
Responsible party
Dong-Ru Ho (Attending Physician, Chang Gung Memorial Hospital) — Principal investigator
First posted
Mar 27, 2024
Start date
Feb 18, 2024
Primary completion
Jul 16, 2024 (estimated)
Completion
Sep 20, 2025 (estimated)
Last update
Mar 27, 2024

Study contacts

Dong-Ru Ho, MD, PhD
Contact
redoxdrh@gmail.com
886-975353211

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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