Skip to content

Hemorrhoidal Artery Embolization: Longitudinal Impact On Symptoms (HELIOS)

Hemorrhoidal Artery Embolization: Longitudinal Impact On Symptoms (HELIOS)

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07179601
Acronym
HELIOS
Enrollment
22
Registered
2025-09-18
Start date
2025-08-05
Completion date
2029-09-30
Last updated
2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Internal Hemorrhoids, HAE

Brief summary

Hemorrhoidal artery embolization (HAE) is a novel treatment for symptomatic internal hemorrhoids. HAE involves the deliberate blockage (embolization) of enlarged rectal or hemorrhoidal arteries leading to reduction of abnormal blood flow to the hemorrhoidal tissue. The aim of HAE is to the improve hemorrhoid related symptoms, especially bleeding. Initial reports of HAE have demonstrated that it both safe and effective. Following an initial clinic visit to determine trial candidacy, enrolled patients will be subsequently treated with HAE. Patients will be followed for a year with clinic follow-up visits at 1, 3, 6 and 12 months.

Detailed description

Hemorrhoidal artery embolization (HAE) is a novel treatment for symptomatic internal hemorrhoids. HAE involves the deliberate blockage (embolization) of enlarged rectal or hemorrhoidal arteries leading to reduction of abnormal blood flow to the hemorrhoidal tissue. The aim of HAE is to the improve hemorrhoid related symptoms, especially bleeding. Initial reports of HAE have demonstrated that it both safe and effective. However, the initial data is limited due to variations in embolization techniques, few studies with prospective long-term follow-up, and studies focusing on patients with only severe symptoms. Further research is needed to understand the specific long-term effectiveness of different embolization materials in a population that more accurately reflects the large number of patients with hemorrhoidal disease who would likely benefit from HAE. The proposed research project includes 22 patients with symptomatic internal hemorrhoids. Following an initial clinic visit to determine trial candidacy, enrolled patients will be subsequently treated with HAE. Patients will be followed for a year with clinic follow-up visits at 1, 3, 6 and 12 months.

Interventions

Hemorrhoidal artery embolization (HAE) involves the deliberate blockage of enlarged rectal or hemorrhoidal arteries leading to reduction of abnormal blood flow to the hemorrhoidal tissue. The aim of HAE is to the improve symptoms related to internal hemorrhoids, especially bleeding.

Sponsors

University of California, Los Angeles
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
No

Inclusion criteria

* Age 18 to 90 years * Ability to give written informed consent and to comply with the follow-up visits * Symptomatic hemorrhoidal disease with French Bleeding Score (FBS) of at least four out of nine * Refusal of or contraindication to surgery * Refusal of or contraindication to other minimally invasive hemorrhoid treatments * Grade I to III hemorrhoids * Previous anoscopy or colonoscopy demonstrating internal hemorrhoids within 1 year * Supply of the CCR from either the SRA or MRA on intra-procedural angiogram prior to embolization

Exclusion criteria

* Asymptomatic patients * Patients who ever had previous colorectal surgery * Grade IV hemorrhoids * Colorectal disease other than hemorrhoids that could result in bleeding * Anatomic findings on CTA that would preclude successful embolization * Contraindication to iodinated contrast * Inability to give written informed consent * Active infection or malignancy * Recent (within 12 months) or active cigarette use * History of inflammatory bowel disease * Uncorrectable bleeding diathesis * Presence of portal hypertension or rectal varices seen on pre-procedure CTA or anoscopy/colonoscopy * No SRA or MRA supply to the CCR seen intra-procedural angiogram

Design outcomes

Primary

MeasureTime frame
Proportion of patients with decrease in bleeding related symptoms of internal hemorrhoids as defined as a two-point decrease in French Bleeding ScoreFrom baseline to 12 months post procedure

Secondary

MeasureTime frameDescription
Proportion of technically successful HAE proceduresFrom baseline to 12 months post procedure
Change in non-bleeding related symptoms of internal hemorrhoids as measured by the Hemorrhoid Disease Symptom Score (HDSS)From baseline to 12 months post procedureThe Hemorrhoidal Disease Symptom Score (HHDS) is a widely used questionnaire used by health professionals to evaluate the condition of patients with hemorrhoids. It can be self-administered and asks patients to rate the frequency and intensity of five primary symptoms: pain, itching, bleeding, soiling, and prolapse. Each symptom is rated on a scale of 0 to 4, with 0 indicating no symptoms and 4 indicating the most severe symptoms. The total HDSS score ranges from 0 to 20, with higher scores indicating more severe hemorrhoidal disease.
Change in non-bleeding related symptoms of internal hemorrhoids as measured by the Short Health Scale-Hemorrhoidal Disease (SHSHD)From baseline to 12 months post procedureThe Short Health Scale-Hemorrhoidal Disease questionnaire is a validated tool used to assess the impact of hemorrhoidal disease on a patient's health-related quality of life. It can be self-administered and measures four key dimensions: symptom load, functional status, disease-specific worries, and general well-being. Each symptom is rated on a scale of 1 to 7, with 1 indicating no symptoms and 7 indicating the most severe symptoms. The total SHSHD score ranges from 4 to 28, with higher scores indicating more severe hemorrhoidal disease.
Change in pain related to as measured by the Visual Analog Scale (VAS)From baseline to 12 months post procedureThe Visual Analog Scale (VAS) is a validated commonly used pain score. The VAS ranges from 0 to 10, with higher scores indicated higher pain levels.
Change in concomitant hemorrhoid medical therapyFrom baseline to 12 months post procedure
Level of patient satisfaction after HAE as determined by patient satisfaction questionnaireFrom baseline to 12 months post procedurePatient satisfaction will be determined by a patient satisfaction questionnaire with the following four options: very satisfied, satisfied, a little satisfied, and unsatisfied
Proportion of patients requiring subsequent non-surgical internal hemorrhoid proceduresFrom baseline to 12 months post procedure
Proportion of patients requiring surgical management of their internal hemorrhoidsFrom baseline to 12 months post procedure

Countries

United States

Contacts

CONTACTRenato Escobar
raescobar@mednet.ucla.edu310-956-6161
CONTACTLucas Cusumano, MD
PRINCIPAL_INVESTIGATORLucas Cusumano, MD

University of California, Los Angeles

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026