Ventricular Synchrony is Not Significantly Determined by Absolute Myocardial Perfusion in Patients with Chronic Heart Failure: A N-ammonia PET Study

Overview

Journal J Nucl Cardiol

Specialty Cardiology & Vascular Diseases

Date 2018 Nov 17

PMID 30443751

Citations 2

Authors

Luis Eduardo Juarez-Orozco

Andrea G Monroy-Gonzalez

Friso M van der Zant

Nick Hoogvorst

Riemer H J A Slart

Remco J J Knol

Affiliations

Soon will be listed here.

Abstract

Background: It is thought that heart failure (HF) patients may benefit from the evaluation of mechanical (dys)synchrony, and an independent inverse relationship between myocardial perfusion and ventricular synchrony has been suggested. We explore the relationship between quantitative myocardial perfusion and synchrony parameters when accounting for the presence and extent of fixed perfusion defects in patients with chronic HF.

Methods: We studied 98 patients with chronic HF who underwent rest and stress Nitrogen-13 ammonia PET. Multivariate analyses of covariance were performed to determine relevant predictors of synchrony (measured as bandwidth, standard deviation, and entropy).

Results: In our population, there were 43 (44%) women and 55 men with a mean age of 71 ± 9.6 years. The SRS was the strongest independent predictor of mechanical synchrony variables (p < .01), among other considered predictors including: age, sex, body mass index, smoking, diabetes mellitus, dyslipidemia, hypertension, rest myocardial blood flow (MBF), and myocardial perfusion reserve (MPR). Results were similar when considering stress MBF instead of MPR.

Conclusions: The existence and extent of fixed perfusion defects, but not the quantitative PET myocardial perfusion parameters (sMBF and MPR), constitute a significant independent predictor of ventricular mechanical synchrony in patients with chronic HF.

Citing Articles

Clinical quantitative cardiac imaging for the assessment of myocardial ischaemia.

Dewey M, Siebes M, Kachelriess M, Kofoed K, Maurovich-Horvat P, Nikolaou K Nat Rev Cardiol. 2020; 17(7):427-450.

PMID: 32094693 PMC: 7297668. DOI: 10.1038/s41569-020-0341-8.

A perfect tool for comprehensive evaluation of myocardial perfusion and function: Stress PET imaging.

Hung G, Zhou W, Chen J J Nucl Cardiol. 2019; 27(6):2243-2246.

PMID: 30603888 DOI: 10.1007/s12350-018-01580-0.

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