R
R. Chiarella
Researcher at Université de Montréal
Publications - 9
Citations - 115
R. Chiarella is an academic researcher from Université de Montréal. The author has contributed to research in topics: Aortic valve & Heart rate. The author has an hindex of 5, co-authored 9 publications receiving 115 citations.
Papers
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Journal ArticleDOI
Spectral analysis and acoustic transmission of mitral and aortic valve closure sounds in dogs. Part 2. Effects of neuromuscular blockade, sternotomy and pacemaker control, and a two-week recovery period.
Louis-Gilles Durand,Y. E. Langlois,T. Lanthier,R. Chiarella,P. Coppens,S. Carioto,S. Bertrand-Bradley +6 more
TL;DR: In this article, the effects of neuromuscular blockade, sternotomy and atrio-ventricular pacing, and a two-week recovery period on the spectra and acoustic transmission of mitral M1 and aortic A2 sound components in dogs are described.
Journal ArticleDOI
Spectral analysis and acoustic transmission of mitral and aortic valve closure sounds in dogs. Part 1. Modelling the heart/thorax acoustic system.
Louis-Gilles Durand,Y. E. Langlois,T. Lanthier,R. Chiarella,P. Coppens,S. Carioto,S. Bertrand-Bradley +6 more
TL;DR: Application of the model to study the spectral characteristics and the acoustic transmission properties of the mitral component M1 of the first heart sound and of the aortic component A2 of the second heart sound in the dog shows that the heart/thorax acoustic system acts like a bandpass filter having a higher attenuation for A2 than for M1.
Journal ArticleDOI
Spectral analysis and acoustic transmission of mitral and aortic valve closure sounds in dogs. Part 4: Effect of modulating cardiac inotropy.
Louis-Gilles Durand,Y. E. Langlois,T. Lanthier,R. Chiarella,P. Coppens,S. Carioto,S. Bertrand-Bradley +6 more
TL;DR: In this paper, a surgical protocol was designed to implant in dogs a programmable atrioventricular pacemaker and to destroy the bundle of His with one to four 0.1 ml formaldehyde injections.
Journal ArticleDOI
Spectral analysis and acoustic transmission of mitral and aortic valve closure sounds in dogs. Part 3. Effects of altering heart rate and P-R interval.
Louis-Gilles Durand,Y. E. Langlois,T. Lanthier,R. Chiarella,P. Coppens,S. Carioto,S. Bertrand-Bradley +6 more
TL;DR: Results indicate that the major effects of varying the P-R interval are a strong change in the intensity of M1 and modifications of its acoustic transmission across the heart/thorax acoustic system.
Acoustic transmission of the aortic component of the second heart sound in humans, dogs and pigs
Louis-Gilles Durand,Y. E. Langlois,T. Lanthier,R. Chiarella,P. Coppens,F. Lemire,M. Jarry,A. Solignac,Y. Latour +8 more
TL;DR: La transmission acoustique de la composante aortique du deuxieme bruit cardiaque a ete evaluee chez 9 humains, 9 chiens et 3 porcs a l'aide d'un modele numerique decrivant le systeme acoustiques cœur-thorax.