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Effekt av perkutan elektrisk nervefeltstimulering på symptomkontroll/nervesystemaktivitet hos pasienter med diabetes type 1 eller 2 (PENFS)

28. september 2026 oppdatert av: Thomas V. Nowak, Indiana University

Effekt av perkutan elektrisk nervefeltstimulering (PENFS) på symptomkontroll og autonom nervesystemaktivitet hos pasienter med diabetes mellitus

The purpose of this study is to evaluate whether stimulation of the vagus nerve can improve nausea and vomiting in diabetic gastroparetic patients.

Studieoversikt

Detaljert beskrivelse

The vagus nerve is one of the main determinants of gastrointestinal motility and gastric emptying. It has been speculated that neuropathy of the vagus nerve is the cause of the delay in gastric emptying in gastroparesis, the symptoms of which include nausea, vomiting, weight loss, early satiety, abdominal pain and bloating.

Percutaneous Electrical Nerve Field Stimulation (PENFS) has been approved by the FDA to treat adolescents with functional abdominal pain associated with irritable bowel syndrome. In this study, the impact of PENFS on gastroparesis symptoms will be evaluated.

After informed consent is obtained, participant eligibility will be assessed at a Screening Visit. A Hemoglobin A1C level (HgbA1c) will be drawn for this purpose. Eligible participants will then return for 5 Study Visits at which, they will:

  • Complete will complete 4 questionnaires
  • Lie in a supine position and have ECG electrodes applied to the chest and/or arms, palmar skin electrodes placed on the fingers of the non-dominant hand to measure galvanic skin response (GSR) and sympathetic nerve activity, and a chest strap to record respiratory activity. Once the equipment is placed, electrocardiogram (ECG) and GSR will be recorded for 20 minutes in the supine position. After the 20 minutes, participants will be asked to sit while ECG and GSR are recorded for 2 additional minutes. Participants will then stand for an additional 2 minutes of ECG and GSR recordings.
  • Have a PENFS device applied to the left ear (the device will be applied at the first four study visits, and not at the fifth). The device will remain in place for 5 days after each visit.

Each participant will have a PENFS device applied at the study visits, however, participants are randomized to whether they will receive active stimulation during the study. The device will remain in place for 5 days after each visit. On the morning of Day 6 after each study visit, the participants will remove the PENFS device and return it at the next study visit.

Participants will also complete a daily diary to document symptoms over the previous 24 hours. Prior to each study visit, participants will be asked to refrain from caffeine on the day of the visit and to refrain from nicotine use for 24 hours prior to the visit.

Studietype

Intervensjonell

Registrering (Antatt)

60

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

  • Navn: Maureen Schilling, BS
  • Telefonnummer: 317-278-2064
  • E-post: maschi@iu.edu

Studiesteder

    • Indiana
      • Indianapolis, Indiana, Forente stater, 46202
        • Indiana University Hospital
        • Hovedetterforsker:
          • Thomas V Nowak, MD
        • Ta kontakt med:
          • Maureen Schilling, BS
          • Telefonnummer: 3172782064
          • E-post: maschi@iu.edu

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 60 år (Voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  • Wiling to have one teaspoon (5 ml) of blood drawn.
  • Willing to have electrodes placed in the external ear.
  • Diagnosed with gastroparesis for twelve months or longer
  • Diagnosed with diabetes either Type 1 or Type 2
  • Documented delayed gastric emptying (>10% retention of the test meal at four hours) on a standardized scrambled-egg scintigraphy gastric emptying test performed in the last two years.
  • Upper GI endoscopy indicating no mechanical obstruction performed in the last five years.
  • Symptoms of nausea and vomiting consistent with clinical diagnosis of gastroparesis (as opposed to other causes of nausea and vomiting such as mechanical obstruction, acute viral illness, chemotherapy, psychogenic vomiting.
  • Documented Hb A1c within three months of screening or at the time of screening (<=8.0)

Exclusion Criteria:

  • Unable to provide consent
  • Pregnant females
  • Medical records indicate intestinal pseudo-obstruction
  • Diagnosed with cardiac arrhythmia
  • History of prior gastric surgery
  • History of vagotomy
  • History of organ transplantation
  • History of seizures
  • Diagnosed with primary swallowing disorders
  • Subjects who are dependent on drugs like Marinol for their condition
  • Those diagnosed with psychogenic vomiting and not related to gastroparesis
  • Medically unstable subjects
  • Those at high surgical risk
  • Subjects taking narcotic analgesics daily.
  • Those with poorly controlled diabetes mellitus (Hgb A1c>8) within three months of screening or at the time of screening.
  • Subjects diagnosed with hemophilia, psoriasis vulgaris are excluded
  • Those having a cardiac pacemaker will be excluded from the study.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: ACTIVE (electrical charge)

The PENFS device is placed behind the patient's left ear and connected to stimulation needles on the auricle. The appliance transmits low-frequency electrical impulses throughout the auricle.

The IB-Stim is a percutaneous electrical nerve field stimulator (PENFS) system intended to be used in patients 11-18 years of age with functional abdominal pain associated with irritable bowel syndrome (IBS). The IB-Stim is intended to be used for 120 hours per week up to 3 consecutive weeks, through application to branches of Cranial Nerves V, VII, IX and X, and the occipital nerves identified by transillumination, as an aid in the reduction of pain when combined with other therapies for IBS.

Andre navn:
  • IB-STIM
Sham-komparator: Sham percutaneous electrical nerve field stimulation (no electrical charge)

The PENFS device is placed behind the patient's left ear and connected to stimulation needles on the auricle. The appliance will not transmit any electrical impulses.

SHAM (no electrical charge)

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Gastroparesis Cardinal Symptom Index Daily Dairy
Tidsramme: Baseline, Week 5

A modified version of the GASTROPARESIS CARDINAL SYMPTOM INDEX - DAILY DIARY (GCSI-DD) will be used. The questionnaire evaluates 4 gastroparesis symptoms (nausea, early satiety, postprandial fullness, upper abdominal pain) and asks participants to rate the severity of symptoms over the past 24 hours on a scale from 0 (none) to 4 (very severe). Additionally, vomiting episodes are reported (0 for none, 1 for one episode, 2 for two episodes, 3 for three episodes, or 4 for four or more episodes). Lower total scores indicate fewer or less severe symptoms.

Baseline, Week 5
Change in Patient Assessment of Upper Gastrointestinal Disorder Symptoms
Tidsramme: Baseline, Week 5

Scores are calculated by averaging the scores for each item in the subscale, with scores ranging from 0 (none or absent) to 5 (very severe). Optimal outcome would be a score of zero, no episodes/symptoms.

Baseline, Week 5

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Heart Rate Variability
Tidsramme: Baseline, Week 5

Heart Rate Variability is reported on a 0-100 scale.

Baseline, Week 5
Change in Anxiety
Tidsramme: Baseline, Week 5

The General Anxiety Disorder (GAD)-7 scale is from 0-21, where 0= no anxiety and 21=severe anxiety

Baseline, Week 5
Change in the measure of depression
Tidsramme: Baseline, Week 5

Patient Health Questionnaire (PHQ)-8 is a questionnaire that measures self-reported depressive systems. PHQ-8 uses a range from 0-24, where 0=no depressive symptoms and 24=severe symptoms.

Baseline, Week 5
Change in Patient Assessment of Upper Gastrointestinal Disorder Symptoms by Diabetes Type
Tidsramme: Baseline, Week 5

Scores are calculated by averaging the scores for each item in the subscale, with scores ranging from 0 (none or absent) to 5 (very severe). Optimal outcome would be a score of zero, no episodes/symptoms.

Baseline, Week 5
Change in Gastroparesis Cardinal Symptom Index Daily Diary by Diabetes Type
Tidsramme: Baseline, Week 5

A modified version of the GASTROPARESIS CARDINAL SYMPTOM INDEX - DAILY DIARY (GCSI-DD) will be used. The questionnaire evaluates 4 gastroparesis symptoms (nausea, early satiety, postprandial fullness, upper abdominal pain) and asks participants to rate the severity of symptoms over the past 24 hours on a scale from 0 (none) to 4 (very severe). Additionally, vomiting episodes are reported (0 for none, 1 for one episode, 2 for two episodes, 3 for three episodes, or 4 for four or more episodes). Lower total scores indicate fewer or less severe symptoms.

Baseline, Week 5

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

  • Hovedetterforsker: Thomas V Nowak, MD, IU School of Medicine/IU Health

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

10. februar 2027

Primær fullføring (Antatt)

1. februar 2029

Studiet fullført (Antatt)

1. februar 2029

Datoer for studieregistrering

Først innsendt

9. september 2024

Først innsendt som oppfylte QC-kriteriene

14. januar 2025

Først lagt ut (Faktiske)

20. januar 2025

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

1. oktober 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

28. september 2026

Sist bekreftet

1. september 2026

Mer informasjon

Begreper knyttet til denne studien

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

IPD-planbeskrivelse

All data and devices will be stored containing only the study subject number and dates of device usage. Sharing this data will not involve any IPD.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Ja

produkt produsert i og eksportert fra USA

Ja

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