Fluoroscopy Activation Interval in SWL

November 13, 2024 updated by: Cengiz Canakcı, MD, Lütfi Kırdar City Hospital

Comparison of Two Different Fluoroscopy Activation Intervals in Shock Wave Lithotripsy: a Prospective Randomised Study

Shock wave lithotripsy (SWL) is a noninvasive method widely used as the first step in treating stone disease. This study aimed to reduce radiation exposure to patients and practitioners during SWL sessions by extending the intervals of fluoroscopy controls. The main questions it aims to answer are:

  • Will radiation exposure be reduced?
  • Will the stone-free status be affected? The researchers will compare the fluoroscopic control intervals of 250 shocks and 500 shocks.

Participants will:

  • Take to a maximum of 3 sessions.
  • Check once a week
  • Group 1 was fluoroscopically monitored every 250 shocks, and Group 2 was fluoroscopically monitored every 500 shocks

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

SWL works on the principle of focusing on the calculus using ultrasonography or fluoroscopy, transmitting high-energy shock waves from the lithotripter to the calculus and fragmenting it. Fluoroscopic focusing is a commonly used imaging technique that raises concerns about ionizing radiation exposure for patients, technologists, and physicians. Intermittent fluoroscopic monitoring during SWL is widely employed to adjust for patient movement, respiratory movement, and stone displacement within the kidney. However, there is no consensus on the optimal frequency of fluoroscopic monitoring in the literature. This study aims to seek to determine whether increasing the duration between fluoroscopic checks affects the success rate of SWL in achieving stone-free status while reducing radiation exposure to patients.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
158

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
      • İstanbul, Turkey
        • Health Science University Kartal Dr. Lütfi Kırdar City Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • radiopaque renal pelvic stones smaller than 2 centimeters.

Exclusion Criteria:

  • anatomical anomalies, coagulation disorders, non-opaque calculi, active urinary infection and distal obstruction

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: 250 shocks
In our clinic, it is standard practice to perform a fluoroscopic check after every 250 shocks during the SWL session. Group 1 was fluoroscopically monitored every 250 shocks.
Device: Shock wave lithotripsy
SWL works on the principle of focusing on the calculus using fluoroscopy. There has yet to be a consensus on the optimal frequency of fluoroscopic monitoring in the literature.
Active Comparator: 500 shocks
Group 2 was fluoroscopically monitored every 500 shocks.
Device: Shock wave lithotripsy
SWL works on the principle of focusing on the calculus using fluoroscopy. There has yet to be a consensus on the optimal frequency of fluoroscopic monitoring in the literature.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
evaluate The effect of two different fluoroscopic activation intervals on the stone-free rate.
Time Frame: 1 month after the end of treatment
Session intervals were determined as one week, and patients with residues visible on the KUB radiography before the session were included in the new session. At the end of the treatment, direct radiography and ultrasound of the urinary system was performed at the end of the first month. Patients with stones larger than 4 mm were considered to have had an unsuccessful treatment.
1 month after the end of treatment

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Secondary endpoints were total fluoroscopy time and complications.
Time Frame: From registration until the 1st month after the end of treatment.
The total fluoroscopy time (seconds) during treatment will be calculated.
From registration until the 1st month after the end of treatment.
Secondary endpoints were complications.
Time Frame: From registration until the 1st month after the end of treatment.
Complications occurring from the beginning of treatment to the end of treatment, such as additional intervention, pyelonephritis, steinstrausse.
From registration until the 1st month after the end of treatment.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Lütfi Kırdar City Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 27, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 5, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 5, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 9, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 13, 2024

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 14, 2024

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 14, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 13, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Canakci0001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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