Chronic Total Occlusion of Coronary ArteryCTO-PCINCT05883579
Application of Coronary Artery Chronic Total Occlusion Scoring Systems
An observational study of Chronic Total Occlusion of Coronary Artery, run by Assiut University at 1 site in Taiwan.
Trial summary
Studying the prediction ability of different CTO scoring systems on Asian CTO PCI population with their relation to technical success and developing a newer stepwise approach depending on these CTO scoring systems for choosing the suggested successful approach considering collateral channel assessment. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Chronic Total Occlusion of Coronary Artery
- What is being tested?
- percutaneous coronary intervention
- Type of treatment
- Surgery or procedure
- How many people
- 650 participants
- Where
- 1 siteTaiwan
- Study dates
- 1 Apr 2023to 1 Aug 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
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 Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: coronary CTO PCI patients done by experienced high volume operator at national Taiwan university hospital (NTUH) with their data available for analysis
Who may be able to join
- All coronary CTO PCI procedures done at national Taiwan university hospital (NTUH) with their data available for analysis from 2015 till the study data collection step.
Who cannot join
- Patients whom data not completed
Trial locations and contacts
1 site in 1 country.
Taiwan1 site, 1 recruiting
- Recruiting
National Taiwan University Hospital
Taipei
Khaled Qayed, Dr., +886973547398, khaledsaberqayed66@yahoo.com
About this study
Official title: Application of Coronary Artery Chronic Total Occlusion (CTO) Scoring Systems Detecting Their Prediction Ability on CTO Percutaneous Coronary Intervention (PCI) Procedures
Studying the prediction ability of different CTO scoring systems on Asian CTO PCI population with their relation to technical success and developing a newer stepwise approach depending on these CTO scoring systems for choosing the suggested successful approach considering collateral channel assessment.
Read the detailed description
Study of applying the Japenese CTO, Castle and Progress CTO scores on all coronary CTO PCI cohort done at national Taiwan university hospital (NTUH)
Study tools:
- Basal demographic data collection( age, cardiovascular risk factors, patients clinical data, lesion characteristics, periprocedural complications).
- The Japanese Chronic Total Occlusion (J-CTO) score calculated for assessment of CTO procedures complexity and predict the likelihood of guide wire crossing within 30 min, as assembled by Morino et al. The J-CTO score is the sum of the following 5 binary parameters: blunt proximal cap, calcification, bending >45°, length of occluded segment >20 mm, and previously failed PCI attempt. Each of these independent variables was assigned a value of 1 when present. With increasing probability of difficulty of wire crossing from 0 as easy till 5 as very difficult.
- Also, the PROGRESS-CTO score calculated (reference website: https://www.progresscto.org/cto with evaluation of 4 baseline angiographic characteristics (proximal cap ambiguity, absence of retrograde collaterals, moderate or severe tortuosity, and LCX CTO) used to determine the likelihood of technical success with CTO PCI. Each of these independent variables was assigned a value of 1 when present. With increasing probability of difficulty of success from 0 as easy till 5 as very difficult.
- Euro CTO CASTLE scoring calculation The CASTLE (coronary artery bypass graft history, age, stump anatomy, tortuosity degree, length of occlusion, and extent of calcification) model applied retrospectively on the patients with every item taking 1 point if present And Technical failure rates range from 8% (CASTLE score 0 to 1) to 35% (CASTLE score ≥4).
- Collateral assessment including type (septal, epicardial or bypass grafts), size by Werner classification [is graded as: 0, no visible connection between the donor and the recipient coronary artery; 1, thread-like connection between the donor and the recipient coronary artery; 2, side-branch like connection between the donor and the recipient coronary artery], tortuosity degree as by the CC scoring system of the NTUH--> Channel tortuosity caculated as the presence of ≥2 high-frequency, successive curves (within 2 mm) in the context of epicardial collaterals and ≥1 high-frequency curve that failed to uncoil in diastole for septal channels (thus a measure of channel distensibility). A high-frequency curve is defined as a curve that is >180° occurring within a segment length <3× the diameter of the collateral.
And all these scores references and calculation items are mentioned in the references below….
- Being tested
- percutaneous coronary intervention
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
percutaneous coronary interventionProcedure or surgery
doing percutaneous revascularization of chronic coronary total occlusion.
What is being measured
The primary outcome is the main question the study is designed to answer.
comparison of the effecacy of using CTO scoring systems (J-CTO scoring, Castle Score and progress scoring along with the CC scoring in prediction of technical success.
comaprling the three CTO scores for all CTO PCI patients done by experienced operator ( J-CTO scoring, Castle Score and progress scoring ) for prediction of technical success with higher scores indicating higher probability of difficulty along with the CC scoring in predicting higher chances of technical success in retrograde CTO PCI patients.
Measured: Two months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Jun 2023
- Study start1 Apr 2023
- Primary completion1 Jul 2023 (estimated)
- Study completion1 Aug 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for Chronic Total Occlusion of Coronary ArteryStudies of the same condition, open and under way.
- More trials run by Assiut UniversityThe sponsor's other registered studies.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 650 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Assiut University
- Sponsor type
- University, hospital or other
- Collaborators
- National Taiwan University Hospital
- Responsible party
- Principal investigator, Khaled Saber Abdelaal Qayed, Assiut University
- Investigators
- Salwa Rushdy, Professor, Study chair, Assiut UniversityPaul Kao, Professor, Study director, National Taiwan University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05883579
- Sponsor's protocol ID
- CTO-PCI scores application
- Acronym
- CTO-PCI
- Status last verified
- May 2023
- First submitted
- 17 May 2023
- Last updated
- 1 Jun 2023
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Huang CC, Lee CK, Meng SW, Hung CS, Chen YH, Lin MS, Yeh CF, Kao HL. Collateral Channel Size and Tortuosity Predict Retrograde Percutaneous Coronary Intervention Success for Chronic Total Occlusion. Circ Cardiovasc Interv. 2018 Jan;11(1):e005124. doi: 10.1161/CIRCINTERVENTIONS.117.005124.
PubMed 29311284Werner GS, Ferrari M, Heinke S, Kuethe F, Surber R, Richartz BM, Figulla HR. Angiographic assessment of collateral connections in comparison with invasively determined collateral function in chronic coronary occlusions. Circulation. 2003 Apr 22;107(15):1972-7. doi: 10.1161/01.CIR.0000061953.72662.3A. Epub 2003 Mar 24.
PubMed 12665484Galassi AR, Werner GS, Boukhris M, Azzalini L, Mashayekhi K, Carlino M, Avran A, Konstantinidis NV, Grancini L, Bryniarski L, Garbo R, Bozinovic N, Gershlick AH, Rathore S, Di Mario C, Louvard Y, Reifart N, Sianos G. Percutaneous recanalisation of chronic total occlusions: 2019 consensus document from the EuroCTO Club. EuroIntervention. 2019 Jun 20;15(2):198-208. doi: 10.4244/EIJ-D-18-00826.
PubMed 30636678Fefer P, Knudtson ML, Cheema AN, Galbraith PD, Osherov AB, Yalonetsky S, Gannot S, Samuel M, Weisbrod M, Bierstone D, Sparkes JD, Wright GA, Strauss BH. Current perspectives on coronary chronic total occlusions: the Canadian Multicenter Chronic Total Occlusions Registry. J Am Coll Cardiol. 2012 Mar 13;59(11):991-7. doi: 10.1016/j.jacc.2011.12.007.
PubMed 22402070Tajti P, Burke MN, Karmpaliotis D, Alaswad K, Werner GS, Azzalini L, Carlino M, Patel M, Mashayekhi K, Egred M, Krestyaninov O, Khelimskii D, Nicholson WJ, Ungi I, Galassi AR, Banerjee S, Brilakis ES. Update in the Percutaneous Management of Coronary Chronic Total Occlusions. JACC Cardiovasc Interv. 2018 Apr 9;11(7):615-625. doi: 10.1016/j.jcin.2017.10.052. Epub 2018 Mar 14.
PubMed 29550088Morino Y, Abe M, Morimoto T, Kimura T, Hayashi Y, Muramatsu T, Ochiai M, Noguchi Y, Kato K, Shibata Y, Hiasa Y, Doi O, Yamashita T, Hinohara T, Tanaka H, Mitsudo K; J-CTO Registry Investigators. Predicting successful guidewire crossing through chronic total occlusion of native coronary lesions within 30 minutes: the J-CTO (Multicenter CTO Registry in Japan) score as a difficulty grading and time assessment tool. JACC Cardiovasc Interv. 2011 Feb;4(2):213-21. doi: 10.1016/j.jcin.2010.09.024.
PubMed 21349461Galassi AR, Boukhris M, Azzarelli S, Castaing M, Marza F, Tomasello SD. Percutaneous Coronary Revascularization for Chronic Total Occlusions: A Novel Predictive Score of Technical Failure Using Advanced Technologies. JACC Cardiovasc Interv. 2016 May 9;9(9):911-22. doi: 10.1016/j.jcin.2016.01.036. Epub 2016 Apr 13.
PubMed 27085580Christopoulos G, Kandzari DE, Yeh RW, Jaffer FA, Karmpaliotis D, Wyman MR, Alaswad K, Lombardi W, Grantham JA, Moses J, Christakopoulos G, Tarar MNJ, Rangan BV, Lembo N, Garcia S, Cipher D, Thompson CA, Banerjee S, Brilakis ES. Development and Validation of a Novel Scoring System for Predicting Technical Success of Chronic Total Occlusion Percutaneous Coronary Interventions: The PROGRESS CTO (Prospective Global Registry for the Study of Chronic Total Occlusion Intervention) Score. JACC Cardiovasc Interv. 2016 Jan 11;9(1):1-9. doi: 10.1016/j.jcin.2015.09.022.
PubMed 26762904Szijgyarto Z, Rampat R, Werner GS, Ho C, Reifart N, Lefevre T, Louvard Y, Avran A, Kambis M, Buettner HJ, Di Mario C, Gershlick A, Escaned J, Sianos G, Galassi A, Garbo R, Goktekin O, Meyer-Gessner M, Lauer B, Elhadad S, Bufe A, Boudou N, Sievert H, Martin-Yuste V, Thuesen L, Erglis A, Christiansen E, Spratt J, Bryniarski L, Clayton T, Hildick-Smith D. Derivation and Validation of a Chronic Total Coronary Occlusion Intervention Procedural Success Score From the 20,000-Patient EuroCTO Registry: The EuroCTO (CASTLE) Score. JACC Cardiovasc Interv. 2019 Feb 25;12(4):335-342. doi: 10.1016/j.jcin.2018.11.020. Epub 2019 Jan 30.
PubMed 30711551Ellis SG, Burke MN, Murad MB, Graham JJ, Badawi R, Toma C, Meltser H, Nair R, Buller C, Whitlow PL; CAPS Group. Predictors of Successful Hybrid-Approach Chronic Total Coronary Artery Occlusion Stenting: An Improved Model With Novel Correlates. JACC Cardiovasc Interv. 2017 Jun 12;10(11):1089-1098. doi: 10.1016/j.jcin.2017.03.016.
PubMed 28595879Li Y, Xu N, Zhang J, Li M, Lu Z, Wei M, Lu B, Zhang Y. Procedural success of CTO recanalization: Comparison of the J-CTO score determined by coronary CT angiography to invasive angiography. J Cardiovasc Comput Tomogr. 2015 Nov-Dec;9(6):578-84. doi: 10.1016/j.jcct.2015.07.005. Epub 2015 Jul 23.
PubMed 26232276Salinas P, Gonzalo N, Moreno VH, Fuentes M, Santos-Martinez S, Fernandez-Diaz JA, Amat-Santos IJ, Ojeda FB, Borrego JC, Cuesta J, Hernandez JMT, Diego-Nieto A, Dubois D, Galeote G, Goicolea J, Gutierrez A, Jimenez-Fernandez M, Jimenez-Mazuecos J, Jurado A, Lacunza J, Lee DH, Lopez M, Lozano F, Martin-Moreiras J, Martin-Yuste V, Millan R, Minana G, Mohandes M, Morales-Ponce FJ, Nunez J, Ojeda S, Pan M, Rivero F, Robles J, Rodriguez-Leiras S, Rojas S, Rondan J, Rumiz E, Sabate M, Sanchis J, Vaquerizo B, Escaned J. Choice of CTO scores to predict procedural success in clinical practice. A comparison of 4 different CTO PCI scores in a comprehensive national registry including expert and learning CTO operators. PLoS One. 2021 Apr 2;16(4):e0245898. doi: 10.1371/journal.pone.0245898. eCollection 2021.
PubMed 33798205Kalogeropoulos AS, Alsanjari O, Keeble TR, Tang KH, Konstantinou K, Katsikis A, Jagathesan R, Aggarwal RK, Clesham GJ, Kelly PA, Werner GS, Hildick-Smith D, Davies JR, Karamasis G. CASTLE score versus J-CTO score for the prediction of technical success in chronic total occlusion percutaneous revascularisation. EuroIntervention. 2020 Apr 3;15(18):e1615-e1623. doi: 10.4244/EIJ-D-19-00352.
PubMed 31270036
Study at a glance
From the registry record, last updated by the sponsor on 1 Jun 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Application of Coronary Artery Chronic Total Occlusion (CTO) Scoring Systems Detecting Their Prediction Ability on CTO Percutaneous Coronary Intervention (PCI) Procedures
- ClinicalTrials.gov ID
- NCT05883579
- Acronym / sponsor ID
- CTO-PCI / CTO-PCI scores application
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 650 participants (estimated)
- Lead sponsor
- Assiut UniversityUniversity, hospital or other
- Collaborators
- National Taiwan University Hospital
- Study start
- 1 Apr 2023 (actual)
- Primary completion
- 1 Jul 2023 (estimated)
- Study completion
- 1 Aug 2023 (estimated)
- First posted
- 1 Jun 2023 (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.
Studying the prediction ability of different CTO scoring systems on Asian CTO PCI population with their relation to technical success and developing a newer stepwise approach depending on these CTO scoring systems for choosing the suggested successful approach considering collateral channel assessment.
Detailed description
Study of applying the Japenese CTO, Castle and Progress CTO scores on all coronary CTO PCI cohort done at national Taiwan university hospital (NTUH)
Study tools:
- Basal demographic data collection( age, cardiovascular risk factors, patients clinical data, lesion characteristics, periprocedural complications).
- The Japanese Chronic Total Occlusion (J-CTO) score calculated for assessment of CTO procedures complexity and predict the likelihood of guide wire crossing within 30 min, as assembled by Morino et al. The J-CTO score is the sum of the following 5 binary parameters: blunt proximal cap, calcification, bending >45°, length of occluded segment >20 mm, and previously failed PCI attempt. Each of these independent variables was assigned a value of 1 when present. With increasing probability of difficulty of wire crossing from 0 as easy till 5 as very difficult.
- Also, the PROGRESS-CTO score calculated (reference website: https://www.progresscto.org/cto with evaluation of 4 baseline angiographic characteristics (proximal cap ambiguity, absence of retrograde collaterals, moderate or severe tortuosity, and LCX CTO) used to determine the likelihood of technical success with CTO PCI. Each of these independent variables was assigned a value of 1 when present. With increasing probability of difficulty of success from 0 as easy till 5 as very difficult.
- Euro CTO CASTLE scoring calculation The CASTLE (coronary artery bypass graft history, age, stump anatomy, tortuosity degree, length of occlusion, and extent of calcification) model applied retrospectively on the patients with every item taking 1 point if present And Technical failure rates range from 8% (CASTLE score 0 to 1) to 35% (CASTLE score ≥4).
- Collateral assessment including type (septal, epicardial or bypass grafts), size by Werner classification [is graded as: 0, no visible connection between the donor and the recipient coronary artery; 1, thread-like connection between the donor and the recipient coronary artery; 2, side-branch like connection between the donor and the recipient coronary artery], tortuosity degree as by the CC scoring system of the NTUH--> Channel tortuosity caculated as the presence of ≥2 high-frequency, successive curves (within 2 mm) in the context of epicardial collaterals and ≥1 high-frequency curve that failed to uncoil in diastole for septal channels (thus a measure of channel distensibility). A high-frequency curve is defined as a curve that is >180° occurring within a segment length <3× the diameter of the collateral.
And all these scores references and calculation items are mentioned in the references below….
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- coronary CTO PCI patients done by experienced high volume operator at national Taiwan university hospital (NTUH) with their data available for analysis
Key inclusion criteria (1 listed)
- All coronary CTO PCI procedures done at national Taiwan university hospital (NTUH) with their data available for analysis from 2015 till the study data collection step.
Key exclusion criteria (1 listed)
- Patients whom data not completed
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 |
|---|---|---|
| percutaneous coronary interventiondoing percutaneous revascularization of chronic coronary total occlusion. | Procedure or surgery | – |
Primary outcome
comparison of the effecacy of using CTO scoring systems (J-CTO scoring, Castle Score and progress scoring along with the CC scoring in prediction of technical success.
Time frame: Two months
comaprling the three CTO scores for all CTO PCI patients done by experienced operator ( J-CTO scoring, Castle Score and progress scoring ) for prediction of technical success with higher scores indicating higher probability of difficulty along with the CC scoring in predicting higher chances of technical success in retrograde CTO PCI patients.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Jun 2023.
- Results publication: PubMed 29311284Huang CC, Lee CK, Meng SW, Hung CS, Chen YH, Lin MS, Yeh CF, Kao HL. Collateral Channel Size and Tortuosity Predict Retrograde Percutaneous Coronary Intervention Success for Chronic Total Occlusion. Circ Cardiovasc Interv. 2018 Jan;11(1):e005124. doi: 10.1161/CIRCINTERVENTIONS.117.005124.
- Results publication: PubMed 12665484Werner GS, Ferrari M, Heinke S, Kuethe F, Surber R, Richartz BM, Figulla HR. Angiographic assessment of collateral connections in comparison with invasively determined collateral function in chronic coronary occlusions. Circulation. 2003 Apr 22;107(15):1972-7. doi: 10.1161/01.CIR.0000061953.72662.3A. Epub 2003 Mar 24.
- Results publication: PubMed 30636678Galassi AR, Werner GS, Boukhris M, Azzalini L, Mashayekhi K, Carlino M, Avran A, Konstantinidis NV, Grancini L, Bryniarski L, Garbo R, Bozinovic N, Gershlick AH, Rathore S, Di Mario C, Louvard Y, Reifart N, Sianos G. Percutaneous recanalisation of chronic total occlusions: 2019 consensus document from the EuroCTO Club. EuroIntervention. 2019 Jun 20;15(2):198-208. doi: 10.4244/EIJ-D-18-00826.
- Results publication: PubMed 22402070Fefer P, Knudtson ML, Cheema AN, Galbraith PD, Osherov AB, Yalonetsky S, Gannot S, Samuel M, Weisbrod M, Bierstone D, Sparkes JD, Wright GA, Strauss BH. Current perspectives on coronary chronic total occlusions: the Canadian Multicenter Chronic Total Occlusions Registry. J Am Coll Cardiol. 2012 Mar 13;59(11):991-7. doi: 10.1016/j.jacc.2011.12.007.
- Results publication: PubMed 29550088Tajti P, Burke MN, Karmpaliotis D, Alaswad K, Werner GS, Azzalini L, Carlino M, Patel M, Mashayekhi K, Egred M, Krestyaninov O, Khelimskii D, Nicholson WJ, Ungi I, Galassi AR, Banerjee S, Brilakis ES. Update in the Percutaneous Management of Coronary Chronic Total Occlusions. JACC Cardiovasc Interv. 2018 Apr 9;11(7):615-625. doi: 10.1016/j.jcin.2017.10.052. Epub 2018 Mar 14.
- Results publication: PubMed 21349461Morino Y, Abe M, Morimoto T, Kimura T, Hayashi Y, Muramatsu T, Ochiai M, Noguchi Y, Kato K, Shibata Y, Hiasa Y, Doi O, Yamashita T, Hinohara T, Tanaka H, Mitsudo K; J-CTO Registry Investigators. Predicting successful guidewire crossing through chronic total occlusion of native coronary lesions within 30 minutes: the J-CTO (Multicenter CTO Registry in Japan) score as a difficulty grading and time assessment tool. JACC Cardiovasc Interv. 2011 Feb;4(2):213-21. doi: 10.1016/j.jcin.2010.09.024.
- Results publication: PubMed 27085580Galassi AR, Boukhris M, Azzarelli S, Castaing M, Marza F, Tomasello SD. Percutaneous Coronary Revascularization for Chronic Total Occlusions: A Novel Predictive Score of Technical Failure Using Advanced Technologies. JACC Cardiovasc Interv. 2016 May 9;9(9):911-22. doi: 10.1016/j.jcin.2016.01.036. Epub 2016 Apr 13.
- Results publication: PubMed 26762904Christopoulos G, Kandzari DE, Yeh RW, Jaffer FA, Karmpaliotis D, Wyman MR, Alaswad K, Lombardi W, Grantham JA, Moses J, Christakopoulos G, Tarar MNJ, Rangan BV, Lembo N, Garcia S, Cipher D, Thompson CA, Banerjee S, Brilakis ES. Development and Validation of a Novel Scoring System for Predicting Technical Success of Chronic Total Occlusion Percutaneous Coronary Interventions: The PROGRESS CTO (Prospective Global Registry for the Study of Chronic Total Occlusion Intervention) Score. JACC Cardiovasc Interv. 2016 Jan 11;9(1):1-9. doi: 10.1016/j.jcin.2015.09.022.
- Results publication: PubMed 30711551Szijgyarto Z, Rampat R, Werner GS, Ho C, Reifart N, Lefevre T, Louvard Y, Avran A, Kambis M, Buettner HJ, Di Mario C, Gershlick A, Escaned J, Sianos G, Galassi A, Garbo R, Goktekin O, Meyer-Gessner M, Lauer B, Elhadad S, Bufe A, Boudou N, Sievert H, Martin-Yuste V, Thuesen L, Erglis A, Christiansen E, Spratt J, Bryniarski L, Clayton T, Hildick-Smith D. Derivation and Validation of a Chronic Total Coronary Occlusion Intervention Procedural Success Score From the 20,000-Patient EuroCTO Registry: The EuroCTO (CASTLE) Score. JACC Cardiovasc Interv. 2019 Feb 25;12(4):335-342. doi: 10.1016/j.jcin.2018.11.020. Epub 2019 Jan 30.
- Results publication: PubMed 28595879Ellis SG, Burke MN, Murad MB, Graham JJ, Badawi R, Toma C, Meltser H, Nair R, Buller C, Whitlow PL; CAPS Group. Predictors of Successful Hybrid-Approach Chronic Total Coronary Artery Occlusion Stenting: An Improved Model With Novel Correlates. JACC Cardiovasc Interv. 2017 Jun 12;10(11):1089-1098. doi: 10.1016/j.jcin.2017.03.016.
- Results publication: PubMed 26232276Li Y, Xu N, Zhang J, Li M, Lu Z, Wei M, Lu B, Zhang Y. Procedural success of CTO recanalization: Comparison of the J-CTO score determined by coronary CT angiography to invasive angiography. J Cardiovasc Comput Tomogr. 2015 Nov-Dec;9(6):578-84. doi: 10.1016/j.jcct.2015.07.005. Epub 2015 Jul 23.
- Results publication: PubMed 33798205Salinas P, Gonzalo N, Moreno VH, Fuentes M, Santos-Martinez S, Fernandez-Diaz JA, Amat-Santos IJ, Ojeda FB, Borrego JC, Cuesta J, Hernandez JMT, Diego-Nieto A, Dubois D, Galeote G, Goicolea J, Gutierrez A, Jimenez-Fernandez M, Jimenez-Mazuecos J, Jurado A, Lacunza J, Lee DH, Lopez M, Lozano F, Martin-Moreiras J, Martin-Yuste V, Millan R, Minana G, Mohandes M, Morales-Ponce FJ, Nunez J, Ojeda S, Pan M, Rivero F, Robles J, Rodriguez-Leiras S, Rojas S, Rondan J, Rumiz E, Sabate M, Sanchis J, Vaquerizo B, Escaned J. Choice of CTO scores to predict procedural success in clinical practice. A comparison of 4 different CTO PCI scores in a comprehensive national registry including expert and learning CTO operators. PLoS One. 2021 Apr 2;16(4):e0245898. doi: 10.1371/journal.pone.0245898. eCollection 2021.
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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. This study is not recruiting at the moment.
Salwa Rushdy, Professor study chair
Assiut University
Paul Kao, Professor study director
National Taiwan University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Chronic Total Occlusion of Coronary Artery, run by Assiut University at 1 site in Taiwan.
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 1 inclusion and 1 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: status not confirmed, as of the sponsor's last update on 1 Jun 2023. 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 Taiwan. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Khaled Qayed, Master (+886973547398, khaledsaberqayed66@yahoo.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
comparison of the effecacy of using CTO scoring systems (J-CTO scoring, Castle Score and progress scoring along with the CC scoring in prediction of technical success. (time frame: Two months). 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 NCT05883579, which also lists 13 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 1 Jun 2023.