Atypically located pericardial cyst compressing the left ventricle during the whole cardiac cycle: A case report

2012 ◽  
Vol 41 (6) ◽  
pp. 386-388
Author(s):  
Wenjing Bi ◽  
Wei Qiao ◽  
Cong Shang ◽  
Feifei Sun ◽  
Weidong Ren
Keyword(s):  
Case Report ◽  
Left Ventricle ◽  
Cardiac Cycle ◽  
Pericardial Cyst

Mathematical myocardium elasticity properties modeling in echocardiography study of diastolic and systolic function of the left ventricle (Preprint)

2020 ◽  
Author(s):  
Lucian Popescu ◽  
Nelu-Mihai Trofenciuc ◽  
Simina Crisan ◽  
Aurora Diana Bordejevic ◽  
Alexandru Mischie ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Cardiac Cycle ◽  
Systolic Function ◽  
Study Group ◽  
Mathematical Approach ◽  
Energetic Approach ◽  
Elasticity Property ◽  
Property Modeling ◽  
Coefficient Of Elasticity ◽  
Mechanical Movement

BACKGROUND A systematic and quantitative comparative analysis for this subject has not been done so far. Thus defined, the coefficient of elasticity is a whole new dimension. OBJECTIVE This study proposes a new mathematical myocardium elasticity property modeling in characterizing of the ventricular diastole and systole. METHODS The study group consisted of 2283 consecutive patients evaluated by echocardiography. The mathematical approach is made starting from energetic consideration, by applying the energy conservation low for the blood entering from left atrium into left ventricle during diastole period. RESULTS Analyzing all the data obtained we developed two brand new coefficients to describe the cardiac cycle and we had verified if the coefficients are correlated with classically used parameters. We consider that the energetic approach take into consideration the whole mechanical movement that is happening inside the heart and can offer a very synthetic and scientific solid view about the cardiac cycle. CONCLUSIONS The new coefficients are simply to be calculated and as you will see from our research the correlation with other classically used parameters is obvious. The direct physical approach of blood flow within the heart can generate new, beneficial perspectives in diagnosing various heart conditions, or even in understanding how works the filling of the ventricles and atria during a heartbeat.

scholarly journals P1002Puncture of occluded coronary sinus ostium for left ventricle lead implant Troubleshooting for a difficult case - CASE REPORT

EP Europace ◽  
2017 ◽  
Vol 19 (suppl_3) ◽  
pp. iii211-iii212
Author(s):  
B. Papelbaum ◽  
SS. Galvao Filho ◽  
JT. Medeiros De Vasconcelos ◽  
C. Eduardo Duarte ◽  
R. Castro Galvao ◽  
...  
Keyword(s):  
Case Report ◽  
Left Ventricle ◽  
Coronary Sinus ◽  
Difficult Case ◽  
Coronary Sinus Ostium ◽  
Sinus Ostium

scholarly journals Left ventricle outflow tract vegetation, embolism and troponin rise: an infective endocarditis case report

2012 ◽  
Vol 7 (S2) ◽  
pp. 145-147 ◽  
Author(s):  
Fortunato Iacovelli ◽  
Pietro Scicchitano ◽  
Domenico Zanna ◽  
Vito Marangelli ◽  
Stefano Favale
Keyword(s):  
Case Report ◽  
Infective Endocarditis ◽  
Left Ventricle ◽  
Outflow Tract

scholarly journals Surgical Resection of a Rapidly Growing Giant Pericardial Cyst: A Case Report

2012 ◽  
Vol 03 (06) ◽  
pp. 554-558 ◽  
Author(s):  
Masanori Yokoba ◽  
Chiaki Kusanagi ◽  
Naomi Kuroudu ◽  
Yukitoshi Satoh ◽  
Noriyuki Masuda ◽  
...  
Keyword(s):  
Case Report ◽  
Surgical Resection ◽  
Pericardial Cyst

Myocardial volume change during cardiac cycle derived from three orthogonal systolic strains: towards a quality assessment of strains

2018 ◽  
Vol 60 (3) ◽  
pp. 286-292 ◽  
Author(s):  
Laurent Bonnemains ◽  
Anne Sophie Guerard ◽  
Paul Soulié ◽  
Freddy Odille ◽  
Jacques Felblinger
Keyword(s):  
Left Ventricle ◽  
Quality Assessment ◽  
Healthy Volunteers ◽  
Volume Change ◽  
Cardiac Cycle ◽  
Mean Value ◽  
Left Ventricular ◽  
Strain Measurements ◽  
Significant Difference ◽  
Standard Deviations

Background The relative modification of the myocardial volume between end-systole and end-diastole ([Formula: see text]) has already been assessed with different methods and falls in a range of 0.9–0.97 (mean value = 0.93). Purpose To estimate [Formula: see text] from the three longitudinal ([Formula: see text], circumferential ([Formula: see text]), and radial ([Formula: see text]) strains of the left ventricle using the formula: [Formula: see text] and to test whether this estimate of [Formula: see text] can be used as a marker of the echocardiography quality. Material and Methods Two hundred manuscripts, including a total of 34,690 patients or healthy volunteers, were identified in the Medline database containing values of [Formula: see text], [Formula: see text], and [Formula: see text] measured from echocardiography. Results The median value of was 0.93, in accordance with the literature, with no significant difference between patients or healthy volunteers ( P = 0.38). The proportion of studies with [Formula: see text] was 79%. When only considering groups of healthy volunteers, the studies failing this test had higher standard deviations for the three individual strains: 0.038 vs. 0.029 ( P = 0.02) for [Formula: see text]; 0.060 vs. 0.034 ( P < 10–6) for [Formula: see text], and 0.243 vs. 0.101 ( P < 10–14) for [Formula: see text]. Conclusion The median ratio of the left ventricular myocardial volumes between end-systole and end-diastole in the investigated studies was [Formula: see text]. The formula [Formula: see text] could be used to detect studies with inaccurate strain measurements.

scholarly journals Infectious pseudo-aneurysm of the left ventricle: a case report and a review of the literature

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Amadu E. Juliana ◽  
Kevin H. van ’t Kruys ◽  
Pieter G. Voigt ◽  
Nico A. Blom
Keyword(s):  
Case Report ◽  
Left Ventricle ◽  
Review Of The Literature ◽  
Pseudo Aneurysm

Asynchrony and ryanodine modulate load-dependent relaxation in the canine left ventricle

1995 ◽  
Vol 268 (1) ◽  
pp. H17-H24 ◽  
Author(s):  
W. Y. Lew
Keyword(s):  
Left Ventricle ◽  
Time Constant ◽  
Cardiac Cycle ◽  
Left Ventricular ◽  
Pressure Load ◽  
Single Cardiac Cycle ◽  
Anesthetized Dogs ◽  
Pressure Fall

Load-dependent relaxation was studied in six anesthetized dogs by inflating an intra-aortic balloon to increase peak left ventricular (LV) pressure by 1–20 mmHg within a single cardiac cycle. A series of timed and graded pressure loads was produced by inflating the balloon either during diastole (early loads) or midsystole (midsystolic pressure loads). The rate of LV pressure fall was measured with the time constant (tau). There was a significant increase in tau with 63 midsystolic pressure load [tau increased 1.4 +/- 0.1% (SE)/mmHg increase in peak LV pressure] but not with 67 early pressure loads (-0.5 +/- 0.1%/mmHg). This difference remained with LV pacing-induced asynchrony (tau increased 1.8 +/- 0.1%/mmHg with 54 midsystolic pressure loads compared with -0.2 +/- 0.1%/mmHg with 56 early pressure loads) and after 5 micrograms/kg of intravenous ryanodine (tau increased 1.0 +/- 0.2%/mmHg with 58 midsystolic pressure loads compared with -0.7 +/- 0.1%/mmHg with 59 early pressure loads). When compared with control, asynchrony significantly augmented and ryanodine significantly attenuated the effects of midsystolic pressure loads. In conclusion, asynchrony and ryanodine modulate the extent of load-dependent relaxation in the intact left ventricle.

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