| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:Primerjava viabilnosti miokarda s stopnjo kolateral pri bolnikih s kronično popolno okluzijo
Authors:ID Pirnat, Maja (Author)
ID Šeruga, Tomaž (Mentor) More about this mentor... New window
ID Noč, Marko (Comentor)
ID Rienmueller, Rainer (Comentor)
Files:.pdf DOK_Pirnat_Maja_2020.pdf (1,50 MB)
MD5: 627D3A8ADF945128D3FED5DB9CEF1D2A
PID: 20.500.12556/dkum/7fecebe3-e8df-4447-b672-171678e1391f
 
Language:Slovenian
Work type:Doctoral dissertation
Typology:2.08 - Doctoral Dissertation
Organization:MF - Faculty of Medicine
Abstract:Namen: Stopnja uspešnosti perkutanih koronarnih arterijskih posegov (PCI) na lezijah s kronično popolno okluzijo (CTO) se je v zadnjih letih povečala, vendar je izboljšanje funkcije možno le, če je prisotna viabilnost miokarda. Eden najpomembnejših dejavnikov ohranjanja viabilnoti miokarda je odpiranje in razvoj kolateral. Naša hipoteza je bila, da višja stopnja kolateral pomeni izboljšano viabilnost miokarda. Metode: Pri 38 bolnikih smo primerjali stopnjo kolateral, ocenjeno s konvencionalnim koronarnim angiogramom (CCA) in razvrščeno po klasifikaciji Rentrop, s parametri viabilnosti (delež brazgotine, krčljivost in EDWT), ki smo jih pridobili s preiskavo ocene viabilnosti z magnetno resonanco. Rezultati: Ugotovili smo statistično pomembno povezavo med stopnjo kolateral, določeno z metodo Rentrop, in deležem brazgotine, izmerjenim s CMR (p = 0,001; T = - 0,144). Naša študija kaže tudi močno statistično pomembno povezavo med stopnjo kolateral in krčljivostjo, ki je bila izmerjena na ordinalni način (normalna, blaga hipokinezija, huda hipokinezija, diskinezija in akinezija) (p = 8,86 × 10-8; T = 0,215). Obe asociaciji sta pokazali povečano razmerje med viabilnim in neviabilnimi miokardom glede na stopnjo kolateral. Ugotovili smo, da ima stopnja kolateral nizko NPV za neviabilen miokard (29%) in visoko PPV za viabilen miokard (82%) s skupno natančnostjo 74%. Zaključek: naša študija kaže, da bi bilo koristno rutinsko oceniti kolaterale pri angiografiji pri bolnikih s CTO za oceno viabilnosti miokarda.
Keywords:viabilnost miokarda, stopnja kolateral, CMR, CCA, metoda Rentrop, parametri viabilnosti
Place of publishing:Maribor
Year of publishing:2020
PID:20.500.12556/DKUM-77673 New window
COBISS.SI-ID:55651075  New window
NUK URN:URN:SI:UM:DK:0Y8PY2YW
Publication date in DKUM:17.03.2021
Views:1983
Downloads:174
Metadata:XML DC-XML DC-RDF
Categories:MF
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:09.09.2020

Secondary language

Language:English
Title:CAN THE DEGREE OF CORONARY COLLATERALISATION BE USED IN CLINICAL ROUTINE AS A VALID ANGIOGRAPHIC PARAMETER OF VIABILITY
Abstract:Purpose: The success rate of percutaneous coronary artery intervention (PCI) of chronic total occlusion (CTO) lesions have increased in the recent years. However, improvement of function is only possible when significant myocardial viability is present. One of the most important factors of maintaining myocardial viability is the opening and development of collaterals. Our hypothesis was that with a higher degree of collaterals more viable myocardium is present. Methods: In 38 patients we compared the degree of collaterals, evaluated with a conventional coronary angiogram (CCA) and graded by the Rentrop classification, to viability parameters (transmural extent of the scar, contractility and EDWT) obtained in a viability study with magnetic resonance (MRI). Results: We found a statistically significant association of the degree of collaterals determined with Rentrop method and transmural extent of the scar as measured by CMR (p=0.001; T= -0.144). Our study also shows strong statistically significant association between the degree of collaterals and contractility measured in ordinal manner (normal, mild hypokinesia, severe hypokinesia, dyskinesia and akinesia) (p=8.86×10-8; T=0.215). Additionally, both associations showed an increase in the ratio between viable vs. non-viable myocardium with the degree of collaterals. We found that that the degree of collateralization has a low NPV for non-viable myocardium (29%) and high PPV for viable myocardium (82%) with overall accuracy of 74%. Conclusion: Our study suggests that it may be beneficial to routinely grade the collaterals at angiography in patients with CTO as an assessment of myocardial viability.
Keywords:Keywords: Myocardial viability, collateral grade, CMR, CCA, Rentrop method, viability parameter


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica