Objectives: To investigate the correlation between quantitative flow ratio (QFR), Pd/Pa, diastolic hyperemia-free ratio (DFR) and fractional flow reserve (FFR, gold standard) in non-culprit lesion (NCL) of patients with non ST-segment elevation myocardial infarction (NSTEMI). Background: The non-hyperemic pressure ratio (NHPR) and the angiography-based indexes have been developed to overcome the limitation of the use of the FFR. Methods: Between January and December 2019, 184 NCL from 116 NSTEMI patients underwent physiologic assessment and were included in the study. NCLs were investigated with QFR, Pd/Pa, DFR, and FFR. Mean values of QFR, Pd/Pa, DFR and FFR were 0.85 ± 0.10, 0.92 ± 0.07, 0.93 ± 0.05 and 0.84 ± 0.07, respectively. According to established cut-offs of QFR, Pd/Pa, DFR, FFR, 42 (23%), 60 (33%), 55 (30%) and 58 (31.5%) lesions resulted flow-limiting. Results: DFR and FFR showed a good correlation (r = 0.76). Bland and Altman plot showed a mean difference of 0.080. DFR Diagnostic accuracy was 88%. The area under the ROC curve (AUC) for DFR was 0.946 (95%CI 0.90–0.97, p =.0001). Similar findings were reported for Pd/Pa (r = 0.73; mean difference 0.095, diagnostic accuracy 84%, AUC 0.909 [95%CI 0.85–0.94, p =.0001]) and QFR (r = 0.68; mean difference 0.01; diagnostic accuracy 88%, AUC 0.964 [95% CI 0.91–0.98, p =.0001]). FFR, QFR, Pd/Pa and DFR identified 31%, 32%, 30% and 32% potentially flow-limiting lesions, respectively. Conclusions: In NSTEMI patients, QFR, Pd/Pa and DFR showed equivalence as compared to gold standard FFR in the discrimination of non-culprit lesions requiring revascularization.

Comparison of quantitative flow ratio, Pd/Pa and diastolic hyperemia-free ratio versus fractional flow reserve in non-culprit lesion of patients with non ST-segment elevation myocardial infarction

Tebaldi M.
Primo
;
Biscaglia S.
Secondo
;
Erriquez A.;Penzo C.;Scoccia A.;Fileti L.
Penultimo
;
Campo G.
Ultimo
2020

Abstract

Objectives: To investigate the correlation between quantitative flow ratio (QFR), Pd/Pa, diastolic hyperemia-free ratio (DFR) and fractional flow reserve (FFR, gold standard) in non-culprit lesion (NCL) of patients with non ST-segment elevation myocardial infarction (NSTEMI). Background: The non-hyperemic pressure ratio (NHPR) and the angiography-based indexes have been developed to overcome the limitation of the use of the FFR. Methods: Between January and December 2019, 184 NCL from 116 NSTEMI patients underwent physiologic assessment and were included in the study. NCLs were investigated with QFR, Pd/Pa, DFR, and FFR. Mean values of QFR, Pd/Pa, DFR and FFR were 0.85 ± 0.10, 0.92 ± 0.07, 0.93 ± 0.05 and 0.84 ± 0.07, respectively. According to established cut-offs of QFR, Pd/Pa, DFR, FFR, 42 (23%), 60 (33%), 55 (30%) and 58 (31.5%) lesions resulted flow-limiting. Results: DFR and FFR showed a good correlation (r = 0.76). Bland and Altman plot showed a mean difference of 0.080. DFR Diagnostic accuracy was 88%. The area under the ROC curve (AUC) for DFR was 0.946 (95%CI 0.90–0.97, p =.0001). Similar findings were reported for Pd/Pa (r = 0.73; mean difference 0.095, diagnostic accuracy 84%, AUC 0.909 [95%CI 0.85–0.94, p =.0001]) and QFR (r = 0.68; mean difference 0.01; diagnostic accuracy 88%, AUC 0.964 [95% CI 0.91–0.98, p =.0001]). FFR, QFR, Pd/Pa and DFR identified 31%, 32%, 30% and 32% potentially flow-limiting lesions, respectively. Conclusions: In NSTEMI patients, QFR, Pd/Pa and DFR showed equivalence as compared to gold standard FFR in the discrimination of non-culprit lesions requiring revascularization.
Tebaldi, M.; Biscaglia, S.; Erriquez, A.; Penzo, C.; Tumscitz, C.; Scoccia, A.; Quadri, G.; Sacchetta, G.; Folla, A.; Vadalà, G.; Fileti, L.; Campo, G.
File in questo prodotto:
File Dimensione Formato  
Comparison of quantitative flow ratio.2019.pdf

solo gestori archivio

Descrizione: versione editoriale
Tipologia: Full text (versione editoriale)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 2.35 MB
Formato Adobe PDF
2.35 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2463027
Citazioni
  • ???jsp.display-item.citation.pmc??? 6
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 7
social impact