Mechanical contraction to guide CRT left-ventricular lead placement instead of electrical activation in myocardial infarction with left ventricular dysfunction: An experimental study based on non-invasive gated myocardial perfusion imaging and invasive electroanatomic mapping.
Animals
Cardiac Resynchronization Therapy
/ methods
Disease Models, Animal
Echocardiography
Electrochemistry
Electrodes
Electrodes, Implanted
Female
Heart Failure
/ therapy
Heart Ventricles
/ diagnostic imaging
Hemodynamics
Male
Myocardial Contraction
Myocardial Infarction
/ diagnostic imaging
Myocardial Ischemia
/ pathology
Myocardial Perfusion Imaging
/ methods
Stress, Mechanical
Swine
Ventricular Dysfunction, Left
/ therapy
Cardiac resynchronization therapy
dyssynchrony
gated SPECT
latest mechanical contraction
myocardial infarction
Journal
Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology
ISSN: 1532-6551
Titre abrégé: J Nucl Cardiol
Pays: United States
ID NLM: 9423534
Informations de publication
Date de publication:
04 2020
04 2020
Historique:
received:
02
03
2019
accepted:
29
03
2019
pubmed:
12
4
2019
medline:
10
8
2021
entrez:
12
4
2019
Statut:
ppublish
Résumé
Whether the region of the latest electrical activation (LEA) corresponds with the segment of the latest mechanical contraction (LMC) in ischemic cardiomyopathy (ICM) is uncertain. We aimed to investigate the relationship between the left-ventricular (LV) viable segments with LEA and with LMC after myocardial infarction (MI) and analyze the acute hemodynamic responses (dP/dt Bama suckling pigs (n = 6) were subjected to create MI models. Both gated myocardial perfusion imaging (GMPI) and electroanatomic mapping (EAM) were performed successfully before MI and 4 weeks after MI. LMC was assessed by phase analysis of GMPI, while LEA was evaluated by EAM. The dP/dt Non-invasive GMPI may be a better option than invasive EAM for guiding LV electrode implantation for CRT in ICM.
Sections du résumé
BACKGROUND
Whether the region of the latest electrical activation (LEA) corresponds with the segment of the latest mechanical contraction (LMC) in ischemic cardiomyopathy (ICM) is uncertain. We aimed to investigate the relationship between the left-ventricular (LV) viable segments with LEA and with LMC after myocardial infarction (MI) and analyze the acute hemodynamic responses (dP/dt
METHODS AND RESULTS
Bama suckling pigs (n = 6) were subjected to create MI models. Both gated myocardial perfusion imaging (GMPI) and electroanatomic mapping (EAM) were performed successfully before MI and 4 weeks after MI. LMC was assessed by phase analysis of GMPI, while LEA was evaluated by EAM. The dP/dt
CONCLUSIONS
Non-invasive GMPI may be a better option than invasive EAM for guiding LV electrode implantation for CRT in ICM.
Identifiants
pubmed: 30972718
doi: 10.1007/s12350-019-01710-2
pii: 10.1007/s12350-019-01710-2
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
419-430Commentaires et corrections
Type : CommentIn
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