Investigating the Utility of Remote Index of Microvascular Resistance in Patients With Chronic Total Occlusion

Chronic Total Occlusion Clinical Trial

Official title:

Investigating the Utility of Remote Index of Microvascular Resistance in Patients With Chronic Total Occlusion

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04226326
• Other study ID #: IRB19-0654
• Status: Completed
• Phase: N/A
• Start date: January 15, 2020
• Est. completion date: July 17, 2023

Study information

• Verified date: August 2023
• Source: University of Chicago
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is prospective cohort study in subjects with a planned percutaneous coronary intervention (PCI) of their chronic total occlusion (CTO). The study will enroll subjects who have been scheduled for a clinically-indicated cardiac catheterization, and will evaluate coronary microvascular function in all subjects meeting inclusion criteria with a coronary flow wire. Evaluation of coronary microvascular function may be performed using indirect methods, however the rationale behind the present study is to directly measure microvascular function using direct coronary flow measurements, since the subjects in the study are to undergo a clinically-indicated cardiac catheterization. The overall purpose of the study is to define the presence and severity of coronary microvascular dysfunction subjects with CTO. The study is designed to enroll 50 subjects with CTO in the span of 3 years. There will be a 6-month assessment of the outcomes of death and cardiovascular death. As the study includes FDA approved tests, there will be no safety endpoint per se, however there will be a mechanism for monitoring adverse events as will be described in detail.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 4
• Est. completion date: July 17, 2023
• Est. primary completion date: July 17, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 21 Years and older

Eligibility

Inclusion Criteria:

• age = 21 years
• seen at University of Chicago Medical center with a planned PCI of a single CTO vessel
• must have either stable angina or angina equivalent
• must have a CTO with a clear donor vessel supplying most of the collaterals.

Exclusion Criteria:

• subjects with a pacemaker or implantable cardioverter defibrillator
• contraindication to cardiac MRI, adenosine, heparin, or nitroglycerin
• cardiac transplantation
• Estimated glomerular filtration rate (eGFR) = 30 mL/min/1.73m2, given the risk of contrast-induced nephropathy (CIN) and nephrogenic systemic fibrosis (NSF) associated with iodinated and gadolinium-based contrast agents, respectively, in patients with significant renal dysfunction
• Women who may potentially be pregnant will receive a pregnancy test and be excluded if pregnant
• Vulnerable populations such as children, college students, prisoners, non-English speakers, and those with diminished decision-making capacity
• Inability or refusal to consent for the study.

Related Conditions & MeSH terms

• Chronic Total Occlusion

Intervention

Other:
• Directly measure microvascular function using direct coronary flow measurements
The study will enroll subjects who have been scheduled for a clinically-indicated cardiac catheterization, and will evaluate coronary microvascular function in all subjects meeting inclusion criteria with a coronary flow wire. Evaluation of coronary microvascular function may be performed using indirect methods, however the rationale behind the present study is to directly measure microvascular function using direct coronary flow measurements, since the subjects in the study are to undergo a clinically-indicated cardiac catheterization. The overall purpose of the study is to define the presence and severity of coronary microvascular dysfunction subjects with CTO.

Locations

Country	Name	City	State
United States	University of Chicago Medical Center	Chicago	Illinois

Sponsors (1)

Lead Sponsor	Collaborator
University of Chicago

Country where clinical trial is conducted

United States, 

References & Publications (10)

Bagnall A, Spyridopoulos I. The evidence base for revascularisation of chronic total occlusions. Curr Cardiol Rev. 2014 May;10(2):88-98. doi: 10.2174/1573403x10666140331125659. — View Citation

Brilakis ES, Banerjee S, Karmpaliotis D, Lombardi WL, Tsai TT, Shunk KA, Kennedy KF, Spertus JA, Holmes DR Jr, Grantham JA. Procedural outcomes of chronic total occlusion percutaneous coronary intervention: a report from the NCDR (National Cardiovascular Data Registry). JACC Cardiovasc Interv. 2015 Feb;8(2):245-253. doi: 10.1016/j.jcin.2014.08.014. — View Citation

Christofferson RD, Lehmann KG, Martin GV, Every N, Caldwell JH, Kapadia SR. Effect of chronic total coronary occlusion on treatment strategy. Am J Cardiol. 2005 May 1;95(9):1088-91. doi: 10.1016/j.amjcard.2004.12.065. — View Citation

Claessen BE, van der Schaaf RJ, Verouden NJ, Stegenga NK, Engstrom AE, Sjauw KD, Kikkert WJ, Vis MM, Baan J Jr, Koch KT, de Winter RJ, Tijssen JG, Piek JJ, Henriques JP. Evaluation of the effect of a concurrent chronic total occlusion on long-term mortality and left ventricular function in patients after primary percutaneous coronary intervention. JACC Cardiovasc Interv. 2009 Nov;2(11):1128-34. doi: 10.1016/j.jcin.2009.08.024. — View Citation

Farooq V, Serruys PW, Garcia-Garcia HM, Zhang Y, Bourantas CV, Holmes DR, Mack M, Feldman T, Morice MC, Stahle E, James S, Colombo A, Diletti R, Papafaklis MI, de Vries T, Morel MA, van Es GA, Mohr FW, Dawkins KD, Kappetein AP, Sianos G, Boersma E. The negative impact of incomplete angiographic revascularization on clinical outcomes and its association with total occlusions: the SYNTAX (Synergy Between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery) trial. J Am Coll Cardiol. 2013 Jan 22;61(3):282-94. doi: 10.1016/j.jacc.2012.10.017. Epub 2012 Dec 19. — View Citation

Fefer 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. — View Citation

Henriques JP, Hoebers LP, Ramunddal T, Laanmets P, Eriksen E, Bax M, Ioanes D, Suttorp MJ, Strauss BH, Barbato E, Nijveldt R, van Rossum AC, Marques KM, Elias J, van Dongen IM, Claessen BE, Tijssen JG, van der Schaaf RJ; EXPLORE Trial Investigators. Percutaneous Intervention for Concurrent Chronic Total Occlusions in Patients With STEMI: The EXPLORE Trial. J Am Coll Cardiol. 2016 Oct 11;68(15):1622-1632. doi: 10.1016/j.jacc.2016.07.744. — View Citation

Puma JA, Sketch MH Jr, Tcheng JE, Gardner LH, Nelson CL, Phillips HR, Stack RS, Califf RM. The natural history of single-vessel chronic coronary occlusion: a 25-year experience. Am Heart J. 1997 Apr;133(4):393-9. doi: 10.1016/s0002-8703(97)70179-0. — View Citation

Ramunddal T, Hoebers LP, Henriques JP, Dworeck C, Angeras O, Odenstedt J, Ioanes D, Olivecrona G, Harnek J, Jensen U, Aasa M, Jussila R, James S, Lagerqvist B, Matejka G, Albertsson P, Omerovic E. Chronic total occlusions in Sweden--a report from the Swedish Coronary Angiography and Angioplasty Registry (SCAAR). PLoS One. 2014 Aug 12;9(8):e103850. doi: 10.1371/journal.pone.0103850. eCollection 2014. Erratum In: PLoS One. 2014;9(10):e112370. Hoebers, Loes [corrected to Hoebers, Loes P]. — View Citation

Writing Group Members; Mozaffarian D, Benjamin EJ, Go AS, Arnett DK, Blaha MJ, Cushman M, Das SR, de Ferranti S, Despres JP, Fullerton HJ, Howard VJ, Huffman MD, Isasi CR, Jimenez MC, Judd SE, Kissela BM, Lichtman JH, Lisabeth LD, Liu S, Mackey RH, Magid DJ, McGuire DK, Mohler ER 3rd, Moy CS, Muntner P, Mussolino ME, Nasir K, Neumar RW, Nichol G, Palaniappan L, Pandey DK, Reeves MJ, Rodriguez CJ, Rosamond W, Sorlie PD, Stein J, Towfighi A, Turan TN, Virani SS, Woo D, Yeh RW, Turner MB; American Heart Association Statistics Committee; Stroke Statistics Subcommittee. Heart Disease and Stroke Statistics-2016 Update: A Report From the American Heart Association. Circulation. 2016 Jan 26;133(4):e38-360. doi: 10.1161/CIR.0000000000000350. Epub 2015 Dec 16. No abstract available. Erratum In: Circulation. 2016 Apr 12;133(15):e599. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Baseline myocardial quality of the CTO-supplied vascular bed.	Characterize the microvascular resistance of the donor vessel to 50 CTOs as it relates to vascular bed quality of the CTO-supplied territory. Scaled from 0-102, with 102 being worse than 0.; 1. Baseline myocardial quality	Day of procedure
Primary	IMR of opened CTO vessel	Following CTO PCI, IMR of the opened vessel will be measured. Scale is linear and 1-100 units, higher numbers being worse outcome.; 3) Change in SAQ from baseline to 6 months	6 months
Primary	Change in exercise time on Bruce protocol baseline	Change in exercise time from baseline to 6 months post-PCI will be measured. Scale is linear and measured in seconds (can be a negative number), with higher numbers indicating a favorable outcome.	6 months
Primary	Change in SAQ from baseline to 6 months	Change in Seattle Angina Questionnaire (SAQ) from baseline to 6 months post-PCI will be measured. Scale is linear and 0-100 units, with higher numbers indicating a favorable outcome.	6 months