Influence of timing of the extrasystolic beat on the extent of postextrasystolic potentiation in the intact human left ventricle

1980 ◽  
Vol 75 (5) ◽  
pp. 657-667 ◽  
Author(s):  
H. Katus ◽  
H. C. Mehmel ◽  
K. Olshausen ◽  
B. Stockins ◽  
W. Kübler
Keyword(s):  
Left Ventricle ◽  
Postextrasystolic Potentiation ◽  
Human Left Ventricle

scholarly journals Alternans Decay of Postextrasystolic Potentiation in Human Left Ventricle

2004 ◽  
Vol 54 (1) ◽  
pp. 87-91 ◽  
Author(s):  
Masaki Tanabe ◽  
Katsuya Onishi ◽  
Kaoru Dohi ◽  
Masaaki Ito ◽  
Takeshi Nakano ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Postextrasystolic Potentiation ◽  
Human Left Ventricle

Numerical simulation of pulsatile blood flow in the human left ventricle

2007 ◽  
Vol 55 (S 1) ◽  
Author(s):  
W Schiller ◽  
K Spiegel ◽  
T Schmid ◽  
H Rudorf ◽  
S Flacke ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Blood Flow ◽  
Left Ventricle ◽  
Pulsatile Blood Flow ◽  
Human Left Ventricle

scholarly journals Simultaneous Endocardial Mapping in the Human Left Ventricle Using a Noncontact Catheter

Circulation ◽  
1998 ◽  
Vol 98 (9) ◽  
pp. 887-898 ◽  
Author(s):  
Richard J. Schilling ◽  
Nicholas S. Peters ◽  
D. Wyn Davies
Keyword(s):  
Left Ventricle ◽  
Endocardial Mapping ◽  
Human Left Ventricle

Human left ventricle transcriptome signatures and signalling pathways in patients with high and low intramyocardial lipid

2021 ◽  
Vol 331 ◽  
pp. e41
Author(s):  
J.P. Hobkirk ◽  
A. Burska ◽  
Y. Haqzad ◽  
A. Gemmink ◽  
S. Carroll ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Signalling Pathways ◽  
Human Left Ventricle

Rhythm effects on contractility of the beating isovolumic left ventricle

1960 ◽  
Vol 199 (6) ◽  
pp. 1115-1120 ◽  
Author(s):  
B. Lendrum ◽  
H. Feinberg ◽  
E. Boyd ◽  
L. N. Katz
Keyword(s):  
Heart Rate ◽  
Left Ventricle ◽  
Systolic Pressure ◽  
Ventricular Volume ◽  
Contractile Force ◽  
Postextrasystolic Potentiation ◽  
Pressure Development ◽  
Induced Changes ◽  
Electrical Alternans

Variation in contractile force of the isovolumic contracting left ventricle of the dog was studied in open-chested in situ hearts. The electrocardiogram and intraventricular pressures were recorded at various heart volumes. Spontaneous changes in heart rate and rhythm occurred at all volumes. Isovolumic systolic pressure development (contractile force) varied with rate and rhythm. Contractile force increased with heart rate (treppe) regardless of pacemaker origin. When a premature beat was followed by a compensatory pause, the premature beat showed a decrease and the next beat an increase in contractile force (postextrasystolic potentiation). The magnitude of the changes varied directly with the prematurity of the beat. Mechanical alternans was observed with electrical alternans, despite the absence of significant volume change. Rate-induced changes, postextrasystolic potentiation and mechanical alternans were additive when they occurred simultaneously. For practical purposes, ventricular volume (filling), hence muscle fiber length, remained constant during these rate and rhythm change, therefore could not affect the strength of contraction. Contractile force changes directly attributable to rate and rhythm changes do, therefore, occur in the intact mammalian heart.

The effect of upright tilt on the volume of the failing human left ventricle

1975 ◽  
Vol 90 (6) ◽  
pp. 735-743 ◽  
Author(s):  
Miltiadis A. Stefadouros ◽  
Manfouz El Shahawy ◽  
Frieda Stefadouros ◽  
A.Calhoun Witham
Keyword(s):  
Left Ventricle ◽  
Human Left Ventricle ◽  
Upright Tilt

On the strain—line patterns in a real human left ventricle

2013 ◽  
pp. 19-24 ◽  
Author(s):  
S Gabriele ◽  
L Teresi ◽  
V Varano ◽  
A Evangelista ◽  
P Nardinocchi ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Human Left Ventricle ◽  
Line Patterns

Cell geometry and contractile abnormalities of myocytes from failing human left ventricle

1995 ◽  
Vol 30 (2) ◽  
pp. 281-290 ◽  
Author(s):  
F DELMONTE ◽  
P OGARA ◽  
P POOLEWILSON ◽  
M YACOUB ◽  
S HARDING
Keyword(s):  
Left Ventricle ◽  
Cell Geometry ◽  
Human Left Ventricle
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