In vitro test-retest repeatability of invasive physiological indices to assess coronary flow.
Catheter Cardiovasc Interv
; 94(5): 677-683, 2019 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-30838771
ABSTRACT
AIMS:
Several invasive techniques are available in clinical practice to assess coronary flow. Nevertheless, the test-retest repeatability of these techniques in a controlled setting has not been reported. Therefore, we sought to evaluate fractional flow reserve (FFR), coronary flow reserve (CFR), index of microvascular resistance (IMR), and absolute coronary blood flow (ABF) with absolute microvascular resistance (AMR) test-retest repeatability using a coronary flow simulator. METHODS ANDRESULTS:
Using a coronary flow simulator (FFR WetLab version 2.0; Abbott Vascular, Santa Clara, CA), we created stenoses ranging from 0% to 70%, with 10% increments. Three different flows were established with their hyperemic phases, and two consecutive measurements were obtained, evaluating the following indices FFR, CFR, IMR, ABF, and AMR, using a pressure/temperature wire and an infusion catheter. One hundred and thirty-eight pairs of measurements were performed. Test-retest reliability was compared in 48 FFR, 18 CFR, 24 IMR, 24 ABF, and 24 AMR. Test-retest repeatability showed excellent reproducibility for FFR, ABF, and AMR; respectively 0.98 (0.97-0.99), 0.92 (0.81-0.97) and 0.91 (0.79-0.96) (P < 0.0001 for all). However, test-retest repeatability was weaker for IMR and poor for CFR; respectively 0.53 (0.16-0.77) (P = 0.006) and 0.27 (-0.26-0.67) (P = 0.30).CONCLUSIONS:
Using a coronary flow simulator, FFR and ABF with AMR had excellent test-retest reliability. IMR and CFR demonstrated weaker test-retest reliability.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cateterismo Cardíaco
/
Estenose Coronária
/
Reserva Fracionada de Fluxo Miocárdico
/
Hemodinâmica
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Catheter Cardiovasc Interv
Assunto da revista:
CARDIOLOGIA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
França