The Effects of Virtual Reality on Pain and Anxiety Levels During Chest Tube RemovalNCT07283172
The Effect of Virtual Reality
A study testing Virtual Reality in people with The Effects of Virtual Reality on Pain and Anxiety Levels During Chest Tube Removal, run by Giresun University at 1 site in Turkey (Türkiye).
Trial summary
Chest tubes are routinely required during cardiothoracic procedures in open-heart surgeries. Postoperatively, these tubes are typically removed within 24-48 hours, and the removal process often causes patients to experience significant pain and discomfort due to the force applied. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- The Effects of Virtual Reality on Pain and Anxiety Levels During Chest Tube Removal
- What is being tested?
- Virtual Reality
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Dec 2025to 15 Jul 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 18 years of age or older,
- Undergone open heart surgery and have a chest tube,
- Able to communicate verbally,
- Have not previously received any psychiatric diagnosis or treatment and are not taking psychiatric medication,
- Hemodynamic status is stable,
- Patients who agree to participate in the study will be included.
Who cannot join
- Patients who used analgesic medication immediately before the chest tube removal procedure,
- Patients with a history of chronic pain who routinely use analgesic medication,
- Patients who wear prescription glasses and have vision problems will not be included.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site
Giresun University Health Sciences Faculty
Giresun, Piraziz, 28340
Yeşim Yaman Aktaş, Professor, +90 5057756930, yesim.yaman@giresun.edu.tr
About this study
Official title: The Effect of Virtual Reality on Pain and Anxiety During Chest Tube Removal in Patients With Cardiac Surgery
Chest tubes are routinely required during cardiothoracic procedures in open-heart surgeries. Postoperatively, these tubes are typically removed within 24-48 hours, and the removal process often causes patients to experience significant pain and discomfort due to the force applied. Among non-pharmacological strategies for managing procedural pain, distraction techniques are commonly used to divert patients' attention away from painful stimuli. In this context, the use of virtual reality (VR) headsets has recently emerged as an innovative method for pain management, effectively redirecting attention during invasive interventions.
The aim of this study is to evaluate the effects of virtual reality on pain and anxiety levels during chest tube removal. This research is designed as a randomized controlled experimental trial. The study population will consist of patients undergoing open-heart surgery at the Cardiovascular Surgery Clinic of Giresun Training and Research Hospital. A total of 60 patients who meet the inclusion criteria and are representative of the study population will be recruited. Data will be collected using a Patient Identification Form developed by the researchers to assess sociodemographic characteristics, the Visual Analog Scale (VAS), and the State Anxiety Inventory. Participants will be randomly assigned to either the experimental or control group. Patients in the control group will receive routine care without additional intervention. In the experimental group, patients will be thoroughly informed about the VR procedure, including instructions on how to use the headset, details of the video content, and an explanation of the upcoming intervention. Five minutes before chest tube removal, the VR headset will be placed on the patient, and a video will be shown. The physician will then remove the chest tube(s) while the patient is engaged in the VR session. Pain intensity will be assessed at three time points: before chest tube removal, immediately after the procedure, and 20 minutes post-procedure. Anxiety levels will be evaluated twice: before the procedure and 20 minutes afterward. Data will be analyzed using SPSS version 22.0. Descriptive statistics, chi-square tests, and independent t-tests will be used for group comparisons, while repeated measures analysis of variance (R-ANOVA) will be employed for repeated measures.
Read the detailed description
The prevalence of coronary artery disease is increasing, and during open-heart surgery, a chest tube is required and used in cardiopulmonary bypass procedures. A chest tube is applied to drain air and fluid accumulated in the pleural space after open heart surgery, reduce the size of the pleural space, return the pleural space pressure to normal and restore negative pressure, ensure normal ventilation in the lungs, prevent mediastinal shift, and prevent the return of air and fluid accumulated in the drainage system. Chest tubes can be placed behind the pectoralis major muscle from the area where the 3rd and 5th intercostal spaces intersect with the midaxillary line, either bilaterally or unilaterally depending on the surgical procedure and the disease. Postoperatively, chest tubes are usually removed 24-48 hours later when the fluid becomes serous or when the amount of fluid collected in 24 hours is less than 150 ml. Since chest tubes adhere to the endothelium after being placed in the pleural space, the force applied during removal causes the patient to experience significant pain and discomfort.
Nurses play the most significant role in pain management as they are the healthcare professionals most involved in patient care and spend the most time with patients. Managing the procedural pain experienced during chest tube removal increases the patient's comfort level. For pain management to be effective, nurses must possess the correct knowledge, behavior, attitude, assessment, and decision-making skills. Both pharmacological and nonpharmacological methods are used in pain management. Due to its rapid effect and ease of application, analgesia is the most preferred method for pain relief. However, non-pharmacological methods reduce the use of analgesics and increase patient comfort by reducing pain. These methods offer advantages such as no side effects like analgesic drugs, no economic burden, and ease of application.
The distraction technique, which holds an important place among non-pharmacological methods, aims to reduce pain perception by preventing the patient from focusing on the painful stimulus. In this context, virtual reality applications stand out as a powerful distraction method. Through virtual reality, the patient's attention is directed away from the pain and the painful treatment process and toward alternative visual and auditory stimuli; thus, the sensation of pain is alleviated, and the goal is to reduce pain-related fear and anxiety. Virtual reality is defined as a dynamic simulation environment that provides an individual with a sense of reality through a computer-based interface that appeals to visual, auditory, and sometimes tactile senses, offering the possibility of interactive engagement.
Various studies have been conducted in the literature on procedural pain and anxiety experienced during chest tube removal. However, it is noteworthy that studies using technology-based innovative applications, such as virtual reality, and evaluating the effects of these applications are limited. The primary objective of this study is to demonstrate the integration and applicability of virtual reality technology, which makes significant contributions to healthcare services today, with nursing care processes. The study aims to introduce a new approach to patient care and enhance patient comfort by examining the effects of virtual reality applications on pain and anxiety during chest tube removal.
The findings obtained from the research will shed light on the feasibility of using virtual reality applications as an effective support tool for pain and anxiety management in clinical settings. This will contribute to minimizing the negative experiences patients encounter during invasive procedures and creating a more positive patient experience during the treatment process. Furthermore, the study will significantly contribute to raising awareness of digital health applications and filling existing scientific gaps in this field by promoting the integration of technology with nursing practices. As a result, this research will enhance patient comfort and safety while developing a sustainable, innovative, and contemporary approach to improving the quality of healthcare services.
- Being tested
- Virtual Reality
- Keywords
- Cardiac Surgery, Chest Tube, Virtual Reality, Pain, Anxiety
- Medical subject headings
- Pain, Anxiety Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Virtual RealityOther
Fifteen minutes before the chest tube removal procedure begins, patients' pain intensity will be measured using the "Visual Analog Scale (VAS)" and their anxiety level will be measured using the "State Anxiety Inventory" (1st MEASUREMENT). The researcher will provide each patient in the intervention group with detailed information about the virtual reality application, how to use the headset, what to do, the video content, and the procedure to be performed before the virtual reality application. Five minutes before the procedure, the virtual reality headset will be put on and the video will be shown. During the virtual reality application, all chest tubes will be removed by the physician. Immediately after the chest tube is removed, the intensity of pain felt by the patient during tube removal will be measured again using the VAS (2nd MEASUREMENT). Twenty minutes after the chest tube is removed, the patient's pain intensity will be measured again using the VAS, and their anxiety level
| Study group | Role | What they receive |
|---|---|---|
| Control Group | No intervention | Control Group |
| Virtual Reality Group | Experimental | Virtual Reality Group Receives: Other: Virtual Reality |
What is being measured
The primary outcome is the main question the study is designed to answer.
Visual Analog Scale
Visual Analog Scale (VAS) will be used to assess procedural pain. The VAS, which has undergone psychometric evaluation, is used to assess acute pain intensity in various patient populations, particularly to evaluate the effectiveness of treatment/intervention. In addition, many authors recommend using the VAS to measure the intensity of acute pain experienced during chest tube removal because it is easier and more understandable. The VAS is a 10 cm long scale that can be used horizontally or vertically, starting with "no pain" and ending with "unbearable pain."
Measured: Participants' pain intensity (VAS) will be assessed three times: before chest tube removal, immediately after the procedure, and 20 minutes after the procedure.
Secondary outcomes (1)
State Anxiety Inventory
This is a 4-point Likert-type inventory consisting of 20 items that aims to determine how an individual feels at a given moment and under specific conditions. In the State Anxiety Inventory, the individual is asked to assess how they feel "right now" and to select one of the following statements based on the intensity of the feelings or behaviors expressed in the items: (1) "not at all," (2) "a little," (3) "a lot," and (4) "completely." A score of 4 is given for selecting "completely," and a score of 1 is given for selecting "not at all." A high score indicates a high level of anxiety, while a low score indicates a low level of anxiety.
Measured: Patients' anxiety levels will be assessed before the chest tube removal procedure and 20 minutes after the procedure.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Dec 2025
- Study start15 Dec 2025 (estimated)
- Primary completion15 May 2026 (estimated)
- Study completion15 Jul 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for The Effects of Virtual Reality on Pain and Anxiety Levels During Chest Tube RemovalStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Giresun University
- Sponsor type
- University, hospital or other
- Collaborators
- Giresun University Funding for Scientific Research Project
- Responsible party
- Sponsor
- Investigators
- Yeşim Yaman Aktaş, Professor, Principal investigator, Giresun University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07283172
- Sponsor's protocol ID
- BAEK-492
- Status last verified
- Dec 2025
- First submitted
- 2 Dec 2025
- Last updated
- 15 Dec 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Kok AY, Eyiler E. Effectiveness of breathing relaxation exercises on pain due to chest tube removal: a systematic review-meta-analysis. J Cardiothorac Surg. 2025 Jul 2;20(1):281. doi: 10.1186/s13019-025-03444-4.
PubMed 40604937Tsai CS, Tung HH, Fang CJ, Chen CT. Effectiveness of non-pharmacological interventions for pain reduction following chest tube removal: A systematic review and network meta-analysis. Intensive Crit Care Nurs. 2025 Apr;87:103909. doi: 10.1016/j.iccn.2024.103909. Epub 2024 Nov 29.
PubMed 39615184Demir Y, Khorshid L. The effect of cold application in combination with standard analgesic administration on pain and anxiety during chest tube removal: a single-blinded, randomized, double-controlled study. Pain Manag Nurs. 2010 Sep;11(3):186-96. doi: 10.1016/j.pmn.2009.09.002. Epub 2010 May 31.
PubMed 20728068Andreasen JJ, Sorensen GV, Abrahamsen ER, Hansen-Nord E, Bundgaard K, Bendtsen MD, Troelsen P. Early chest tube removal following cardiac surgery is associated with pleural and/or pericardial effusions requiring invasive treatment. Eur J Cardiothorac Surg. 2016 Jan;49(1):288-92. doi: 10.1093/ejcts/ezv005. Epub 2015 Feb 7.
PubMed 25661079
Study at a glance
From the registry record, last updated by the sponsor on 15 Dec 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Virtual Reality on Pain and Anxiety During Chest Tube Removal in Patients With Cardiac Surgery
- ClinicalTrials.gov ID
- NCT07283172
- Acronym / sponsor ID
- BAEK-492
- Keywords
- Cardiac Surgery, Chest Tube, Virtual Reality, Pain, Anxiety
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Giresun UniversityUniversity, hospital or other
- Collaborators
- Giresun University Funding for Scientific Research Project
- Study start
- 15 Dec 2025 (estimated)
- Primary completion
- 15 May 2026 (estimated)
- Study completion
- 15 Jul 2026 (estimated)
- First posted
- 15 Dec 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Chest tubes are routinely required during cardiothoracic procedures in open-heart surgeries. Postoperatively, these tubes are typically removed within 24-48 hours, and the removal process often causes patients to experience significant pain and discomfort due to the force applied. Among non-pharmacological strategies for managing procedural pain, distraction techniques are commonly used to divert patients' attention away from painful stimuli. In this context, the use of virtual reality (VR) headsets has recently emerged as an innovative method for pain management, effectively redirecting attention during invasive interventions.
The aim of this study is to evaluate the effects of virtual reality on pain and anxiety levels during chest tube removal. This research is designed as a randomized controlled experimental trial. The study population will consist of patients undergoing open-heart surgery at the Cardiovascular Surgery Clinic of Giresun Training and Research Hospital. A total of 60 patients who meet the inclusion criteria and are representative of the study population will be recruited. Data will be collected using a Patient Identification Form developed by the researchers to assess sociodemographic characteristics, the Visual Analog Scale (VAS), and the State Anxiety Inventory. Participants will be randomly assigned to either the experimental or control group. Patients in the control group will receive routine care without additional intervention. In the experimental group, patients will be thoroughly informed about the VR procedure, including instructions on how to use the headset, details of the video content, and an explanation of the upcoming intervention. Five minutes before chest tube removal, the VR headset will be placed on the patient, and a video will be shown. The physician will then remove the chest tube(s) while the patient is engaged in the VR session. Pain intensity will be assessed at three time points: before chest tube removal, immediately after the procedure, and 20 minutes post-procedure. Anxiety levels will be evaluated twice: before the procedure and 20 minutes afterward. Data will be analyzed using SPSS version 22.0. Descriptive statistics, chi-square tests, and independent t-tests will be used for group comparisons, while repeated measures analysis of variance (R-ANOVA) will be employed for repeated measures.
Detailed description
The prevalence of coronary artery disease is increasing, and during open-heart surgery, a chest tube is required and used in cardiopulmonary bypass procedures. A chest tube is applied to drain air and fluid accumulated in the pleural space after open heart surgery, reduce the size of the pleural space, return the pleural space pressure to normal and restore negative pressure, ensure normal ventilation in the lungs, prevent mediastinal shift, and prevent the return of air and fluid accumulated in the drainage system. Chest tubes can be placed behind the pectoralis major muscle from the area where the 3rd and 5th intercostal spaces intersect with the midaxillary line, either bilaterally or unilaterally depending on the surgical procedure and the disease. Postoperatively, chest tubes are usually removed 24-48 hours later when the fluid becomes serous or when the amount of fluid collected in 24 hours is less than 150 ml. Since chest tubes adhere to the endothelium after being placed in the pleural space, the force applied during removal causes the patient to experience significant pain and discomfort.
Nurses play the most significant role in pain management as they are the healthcare professionals most involved in patient care and spend the most time with patients. Managing the procedural pain experienced during chest tube removal increases the patient's comfort level. For pain management to be effective, nurses must possess the correct knowledge, behavior, attitude, assessment, and decision-making skills. Both pharmacological and nonpharmacological methods are used in pain management. Due to its rapid effect and ease of application, analgesia is the most preferred method for pain relief. However, non-pharmacological methods reduce the use of analgesics and increase patient comfort by reducing pain. These methods offer advantages such as no side effects like analgesic drugs, no economic burden, and ease of application.
The distraction technique, which holds an important place among non-pharmacological methods, aims to reduce pain perception by preventing the patient from focusing on the painful stimulus. In this context, virtual reality applications stand out as a powerful distraction method. Through virtual reality, the patient's attention is directed away from the pain and the painful treatment process and toward alternative visual and auditory stimuli; thus, the sensation of pain is alleviated, and the goal is to reduce pain-related fear and anxiety. Virtual reality is defined as a dynamic simulation environment that provides an individual with a sense of reality through a computer-based interface that appeals to visual, auditory, and sometimes tactile senses, offering the possibility of interactive engagement.
Various studies have been conducted in the literature on procedural pain and anxiety experienced during chest tube removal. However, it is noteworthy that studies using technology-based innovative applications, such as virtual reality, and evaluating the effects of these applications are limited. The primary objective of this study is to demonstrate the integration and applicability of virtual reality technology, which makes significant contributions to healthcare services today, with nursing care processes. The study aims to introduce a new approach to patient care and enhance patient comfort by examining the effects of virtual reality applications on pain and anxiety during chest tube removal.
The findings obtained from the research will shed light on the feasibility of using virtual reality applications as an effective support tool for pain and anxiety management in clinical settings. This will contribute to minimizing the negative experiences patients encounter during invasive procedures and creating a more positive patient experience during the treatment process. Furthermore, the study will significantly contribute to raising awareness of digital health applications and filling existing scientific gaps in this field by promoting the integration of technology with nursing practices. As a result, this research will enhance patient comfort and safety while developing a sustainable, innovative, and contemporary approach to improving the quality of healthcare services.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Control Group | No intervention | –Control Group |
| Virtual Reality Group | Experimental | Other: Virtual RealityVirtual Reality Group |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- 18 years of age or older,
- Undergone open heart surgery and have a chest tube,
- Able to communicate verbally,
- Have not previously received any psychiatric diagnosis or treatment and are not taking psychiatric medication,
- Hemodynamic status is stable,
Key exclusion criteria (3 listed)
- Patients who used analgesic medication immediately before the chest tube removal procedure,
- Patients with a history of chronic pain who routinely use analgesic medication,
- Patients who wear prescription glasses and have vision problems will not be included.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Virtual RealityFifteen minutes before the chest tube removal procedure begins, patients' pain intensity will be measured using the "Visual Analog Scale (VAS)" and their anxiety level will be measured using the "State Anxiety Inventory" (1st MEASUREMENT). The researcher will provide each patient in the intervention group with detailed information about the virtual reality application, how to use the headset, what to do, the video content, and the procedure to be performed before the virtual reality application. Five minutes before the procedure, the virtual reality headset will be put on and the video will be shown. During the virtual reality application, all chest tubes will be removed by the physician. Immediately after the chest tube is removed, the intensity of pain felt by the patient during tube removal will be measured again using the VAS (2nd MEASUREMENT). Twenty minutes after the chest tube is removed, the patient's pain intensity will be measured again using the VAS, and their anxiety level | Other | Virtual Reality Group |
Primary outcome
Visual Analog Scale
Time frame: Participants' pain intensity (VAS) will be assessed three times: before chest tube removal, immediately after the procedure, and 20 minutes after the procedure.
Visual Analog Scale (VAS) will be used to assess procedural pain. The VAS, which has undergone psychometric evaluation, is used to assess acute pain intensity in various patient populations, particularly to evaluate the effectiveness of treatment/intervention. In addition, many authors recommend using the VAS to measure the intensity of acute pain experienced during chest tube removal because it is easier and more understandable. The VAS is a 10 cm long scale that can be used horizontally or vertically, starting with "no pain" and ending with "unbearable pain."
1 secondary outcome
State Anxiety Inventory
Time frame: Patients' anxiety levels will be assessed before the chest tube removal procedure and 20 minutes after the procedure.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Dec 2025.
- Results publication: PubMed 40604937Kok AY, Eyiler E. Effectiveness of breathing relaxation exercises on pain due to chest tube removal: a systematic review-meta-analysis. J Cardiothorac Surg. 2025 Jul 2;20(1):281. doi: 10.1186/s13019-025-03444-4.
- Results publication: PubMed 39615184Tsai CS, Tung HH, Fang CJ, Chen CT. Effectiveness of non-pharmacological interventions for pain reduction following chest tube removal: A systematic review and network meta-analysis. Intensive Crit Care Nurs. 2025 Apr;87:103909. doi: 10.1016/j.iccn.2024.103909. Epub 2024 Nov 29.
- Results publication: PubMed 20728068Demir Y, Khorshid L. The effect of cold application in combination with standard analgesic administration on pain and anxiety during chest tube removal: a single-blinded, randomized, double-controlled study. Pain Manag Nurs. 2010 Sep;11(3):186-96. doi: 10.1016/j.pmn.2009.09.002. Epub 2010 May 31.
- Results publication: PubMed 25661079Andreasen JJ, Sorensen GV, Abrahamsen ER, Hansen-Nord E, Bundgaard K, Bendtsen MD, Troelsen P. Early chest tube removal following cardiac surgery is associated with pleural and/or pericardial effusions requiring invasive treatment. Eur J Cardiothorac Surg. 2016 Jan;49(1):288-92. doi: 10.1093/ejcts/ezv005. Epub 2015 Feb 7.
- Individual participant dataSharing planned: Undecided
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Yeşim Yaman Aktaş, Professor principal investigator
Giresun University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Virtual Reality in people with The Effects of Virtual Reality on Pain and Anxiety Levels During Chest Tube Removal, run by Giresun University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 15 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Yeşim Yaman Aktaş, Professor (+90 5057756930, yesim.yaman@giresun.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Visual Analog Scale (time frame: Participants' pain intensity (VAS) will be assessed three times: before chest tube removal, immediately after the procedure, and 20 minutes after the procedure.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07283172, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Dec 2025.