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Pudendal Atherosclerosis by IVUS-NIRS in Men With Coronary Artery Disease (PUDENDAL-NIRS)

30. september 2026 opdateret af: Hospital Central Militar

Characterization of Internal Pudendal Atherosclerosis by Intravascular Ultrasound and Near-Infrared Spectroscopy and Its Relationship With Erectile Dysfunction in Men With Coronary Artery Disease

This prospective, single-center, exploratory study will evaluate the association between atherosclerotic and lipid plaque burden in the internal pudendal arteries, assessed by intravascular ultrasound and near-infrared spectroscopy (IVUS-NIRS), and the severity of erectile dysfunction in adult men with documented or suspected coronary artery disease undergoing clinically indicated coronary angiography.

After completion of the clinically indicated coronary procedure, eligible and hemodynamically stable participants with favorable pelvic vascular anatomy will undergo selective pudendal angiography and investigational IVUS-NIRS imaging of one or both internal pudendal arteries. Erectile function will subsequently be assessed within 30 days using the 5-item International Index of Erectile Function (IIEF-5).

The primary outcome will be the correlation between pudendal maxLCBI4mm and IIEF-5 score. Secondary analyses will characterize pudendal and coronary plaque burden, assess the relationship between pudendal and coronary lipid burden, evaluate associations with cardiovascular risk factors, and describe the technical feasibility and safety of pudendal IVUS-NIRS imaging.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

60

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

  • Mexico
    • Mexico City
      • Mexico City, Mexico City, Mexico, 11200
        • Rekruttering
        • Hospital Central Militar
        • Kontakt:
        • Kontakt:
        • Ledende efterforsker:
          • José Raúl Méndez Colin, MD
        • Underforsker:
          • Luis Enrique Berumen Domínguez, MD
        • Underforsker:
          • José Gadú Campos Salcedo, MD
        • Underforsker:
          • Edwin García Sánchez, MD
        • Underforsker:
          • Luis David Sánchez Mayo, MD
        • Underforsker:
          • Aldo Figueroa Peña, MD
        • Underforsker:
          • María Ximena Romo Cordero, MD
        • Underforsker:
          • Roberto Paniagua Jiménez, MD
        • Underforsker:
          • Eduardo Sánchez Cortés, MD
        • Underforsker:
          • Ángel Leovigildo Alberto Delgado, MD
        • Underforsker:
          • Alfredo Andrei Tort Hidalgo, MD
        • Underforsker:
          • Cesar Gerardo Galván Vargas, MD
        • Underforsker:
          • Mario Humberto Lozano Quintas, MD
        • Underforsker:
          • Jorge Alberto Silva Rendón, MD

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Han

Beskrivelse

Inclusion Criteria:

  1. Male participants aged 18 years or older.
  2. Documented or suspected coronary artery disease with a clinical indication for coronary angiography.
  3. Coronary IVUS-NIRS evaluation indicated by the treating interventional cardiologist.
  4. Sufficient clinical and hemodynamic stability to undergo the additional pudendal evaluation.
  5. Favorable pelvic vascular anatomy for selective angiography and safe advancement of the IVUS-NIRS catheter.
  6. Ability to complete the IIEF-5 questionnaire and provide information regarding sexual function.
  7. Written informed consent specifically for study participation and invasive evaluation of the internal pudendal arteries.
  8. Agreement to clinical follow-up by Cardiology and Urology.

Exclusion Criteria:

  1. Cardiogenic shock, hemodynamic instability, or acute clinical deterioration.
  2. Urgent or complicated coronary procedure in which prolonging the procedure would increase risk.
  3. Advanced kidney disease or high risk of kidney injury associated with additional contrast administration.
  4. Unfavorable iliofemoral or pelvic vascular anatomy for safe evaluation of the internal pudendal arteries.
  5. Severe coagulopathy, active bleeding, or contraindication to the invasive procedure.
  6. History of radical pelvic surgery or pelvic radiotherapy.
  7. Advanced prostate cancer or previous urologic treatment that predominantly explains erectile dysfunction.
  8. Severe untreated hypogonadism, advanced neurologic disease, or another predominant nonvascular cause of erectile dysfunction.
  9. Inability to reliably complete the IIEF-5 questionnaire.
  10. Refusal to participate or to provide study-specific written informed consent.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Pudendal IVUS-NIRS Evaluation

Participants will undergo selective angiography of the internal iliac and internal pudendal arteries followed, when technically feasible and clinically safe, by investigational IVUS-NIRS imaging of one or both internal pudendal arteries.
Procedure: Selective Pudendal Angiography

Selective angiography of the internal iliac and internal pudendal arteries will be performed after completion of the clinically indicated coronary procedure to assess pelvic vascular anatomy and technical feasibility for intravascular imaging.

Enhed: Pudendal IVUS-NIRS Imaging

When vascular anatomy and clinical conditions are considered suitable, an IVUS-NIRS catheter will be advanced into one or both internal pudendal arteries. Automated pullback imaging will be performed to assess vessel anatomy, plaque burden, lipid core burden index (LCBI), and maxLCBI4mm.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlation Between Pudendal maxLCBI4mm and IIEF-5 Score
Tidsramme: At the pudendal IVUS-NIRS procedure and within 30 days after enrollment for IIEF-5 assessment

The association between the maximum lipid core burden index within a 4-mm segment (maxLCBI4mm) of the internal pudendal arteries, measured by IVUS-NIRS, and erectile function assessed by the 5-item International Index of Erectile Function (IIEF-5) will be evaluated using Spearman correlation. Pudendal maxLCBI4mm ranges from 0 to 1000, with higher values indicating greater lipid burden. IIEF-5 scores range from 5 to 25, with lower scores indicating more severe erectile dysfunction.
At the pudendal IVUS-NIRS procedure and within 30 days after enrollment for IIEF-5 assessment

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Pudendal Artery Plaque Burden by IVUS
Tidsramme: During the pudendal IVUS-NIRS procedure

Pudendal artery plaque burden will be quantified by intravascular ultrasound (IVUS) as the proportion of the vessel area occupied by plaque plus media. Measurements will include plaque burden, minimum lumen area, and angiographic percent stenosis in the evaluated internal pudendal arteries.
During the pudendal IVUS-NIRS procedure
Pudendal Artery Lipid Burden by NIRS
Tidsramme: During the index pudendal IVUS-NIRS procedure

Lipid burden in the internal pudendal arteries will be characterized using near-infrared spectroscopy (NIRS), including the Lipid Core Burden Index (LCBI) and maximum LCBI within any continuous 4-mm segment (maxLCBI4mm). If both internal pudendal arteries are evaluated, measurements from each side will be recorded and the highest maxLCBI4mm per participant will be used for the main analyses.
During the index pudendal IVUS-NIRS procedure
Correlation Between Pudendal and Coronary maxLCBI4mm
Tidsramme: During the index coronary and pudendal IVUS-NIRS procedures

The association between pudendal and coronary lipid burden will be assessed by correlating the highest pudendal maxLCBI4mm with the highest coronary maxLCBI4mm obtained by IVUS-NIRS. The correlation will be evaluated using Spearman correlation.
During the index coronary and pudendal IVUS-NIRS procedures
Pudendal Atherosclerotic and Lipid Burden According to Erectile Dysfunction Severity
Tidsramme: Within 30 days after enrollment

Pudendal atherosclerotic and lipid burden, including plaque burden and maxLCBI4mm, will be compared across erectile dysfunction severity categories defined by the IIEF-5 score: no erectile dysfunction, mild, mild-to-moderate, moderate, and severe erectile dysfunction.
Within 30 days after enrollment
Spearman Correlation Between Pudendal maxLCBI4mm and LDL Cholesterol
Tidsramme: At baseline

Spearman's rank correlation coefficient (rho) will be calculated between pudendal maxLCBI4mm measured by near-infrared spectroscopy (NIRS) and serum low-density lipoprotein cholesterol (LDL-C). Pudendal maxLCBI4mm is expressed as an index from 0 to 1000, with higher values indicating greater lipid burden. LDL-C is expressed in mg/dL.
At baseline
Number of Participants With Successful Pudendal IVUS-NIRS Image Acquisition
Tidsramme: Periprocedural

The number of participants in whom analyzable IVUS-NIRS images are successfully obtained from at least one internal pudendal artery will be reported. Successful image acquisition is defined as acquisition of images of sufficient quality for quantitative IVUS and NIRS analysis.
Periprocedural
Procedure-Related Adverse Events
Tidsramme: From the pudendal procedure through the 30-day study evaluation

Adverse events related to selective pudendal angiography and IVUS-NIRS imaging will be recorded, including arterial dissection, perforation, persistent vasospasm, thrombosis, bleeding, contrast-associated kidney injury, embolization, or other complications considered attributable to the investigational pudendal procedure.
From the pudendal procedure through the 30-day study evaluation

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Hospital Central Militar

Efterforskere

  • Ledende efterforsker: José Raúl Méndez Colin, MD, Hospital Central Militar
  • Studieleder: Luis Enrique Berumen Domínguez, MD, Hospital Central Militar

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

24. september 2026

Primær færdiggørelse (Anslået)

1. december 2027

Studieafslutning (Anslået)

1. december 2027

Datoer for studieregistrering

Først indsendt

25. september 2026

Først indsendt, der opfyldte QC-kriterier

30. september 2026

Først opslået (Faktiske)

2. oktober 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

2. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • HCM-PUDENDAL-NIRS-2026

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data (IPD) will not be shared because the study protocol and informed consent do not include a plan for external sharing of participant-level data. Study data will remain under institutional custody and will be used for the approved research objectives, analyses, and scientific publications while maintaining participant confidentiality.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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