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https://www.readbyqxmd.com/read/17282373/simulation-of-intracardial-potentials-with-anisotropic-computer-heart-models
#1
Xin Zhu, Daming Wei, Hui Wang
To date, most interests in simulation studies with whole heart models are in body surface or epicardial potentials in order to compare the results with measurements in experimental and clinical practices. The focus of this study is paid on intracardial potentials as they are comparable with measurements during the invasive Electrophysiological Study (EPS) and the catheter ablation, which are becoming a dominant means in the therapy of arrhythmias. In this paper, simulations are implemented based on anisotropic computer heart models and a simulation system previously developed...
2005: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/10965619/infective-endocarditis-affecting-both-systemic-and-pulmonary-circulations-predisposed-by-a-ventricular-septal-defect
#2
M Ando, A Sakai, K Nakamura, Y Iwata, T Sanae
A 39-year-old woman was admitted to our hospital presenting persisting fever. An echocardiographic examination showed severe aortic and mitral valve regurgitation with moderate tricuspid regurgitation. Small left-to-right shunt through the ventricular septal defect was identified. Vegetation was also detected on the tricuspid, mitral, and aortic valves. At one month after admission, the patient showed sudden onset of headache and abdominal pain. A computed tomographic scan demonstrated cerebral and splenic infarction...
July 2000: Japanese Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/7432688/-echocardiographic-study-with-the-doppler-effect-of-floating-of-the-interventricular-septum-as-a-determining-factor-in-the-genesis-of-innocent-murmurs
#3
G Scotto Di Quacquaro, V Franciulli, M Punzi, F Giovine
The present study offers the possibility of individuating the genesis of innocent murmurs. 30 patients between 5 and 20 years, showing at the phonocardiogram a train of oscillations in a proto-mesosistolic or mesosistolic phase with characteristics that testify an innocent murmur, have been examined. The routine examinations and cardiac cateterism to exclude congenital or acquired heart diseases have been done to all the patients. The echocardiographic examination has shown a characteristic floating of the interventricular septum, that, producing a variable mutability of the dimensions of the right ventricular cavities, determines, particularly in the tract of the right ventriculae efflux, a hematic turbolent flow well visible with the Doppler effect...
October 6, 1980: Minerva Medica
https://www.readbyqxmd.com/read/7397990/influence-of-mitral-valve-surgery-on-tricuspid-incompetence-concomitant-with-mitral-valve-disease
#4
R Simon, H Oelert, H G Borst, P R Lichtlen
Twenty adult patients with predominant mitral valve disease and variable degrees of tricuspid incompetence (TI) were reinvestigated 6-28 months after mitral valve operation. Postoperatively, 10 of the 20 patients were in sinus rhythm, compared with four of 20 preoperatively. Right ventricula peak systolic pressure decreased from 48 to 33 mm Hg (p less than 0.005), pulmonary vascular resistance declined from 234 to 141 dyn-sec-cm-5 (p less than 0.05), and cardiac index increased from 2.4 to 3.0 l/min/m2 (p less than 0...
August 1980: Circulation
https://www.readbyqxmd.com/read/159743/-left-ventricular-function-in-chronic-obstructive-lung-disease-author-s-transl
#5
C Gabinski, G Courty, P Besse, R Castaing
Left ventricular function was studied at rest and during post-extrasystolic potentiation in 18 patients with chronic obstructive lung disease. The contractility indices used were obtained from pressures recorded in the isovolumetric period (left ventricular end-diastolic pressure, Vmax., VECmax., dP/dtmax.) and from volume variations during ejection (end-diastolic volume, ejection fraction, VCF). Left ventricular diastolic compliance was also evaluated. All patients were hypoxic (PaO2 = 58 +/- 7 torr); six of them had cor pulmonale (group B); the remaining 12 patients constituted group A...
September 1979: Bulletin Européen de Physiopathologie Respiratoire
https://www.readbyqxmd.com/read/129833/comparative-analyses-of-skeletal-and-cardiac-myosins
#6
COMPARATIVE STUDY
J Wikman-Coffelt, C Fenner, D T Mason
Two types of canine cardiac myosins, from the free wall of the left ventricle and from the free wall of the right ventricle, were compared with canine skeletal muscle myosin from gastrocnemius. For K+ -activated myosin the Vmax values in mumoles of Pi/mg.min were: right ventricle, 0.57 +/- 0.02; left ventricle, 0.72 +/- 0.09; gastrocnemius, 0.92 +/- 0.04. For Ca++ -activated myosin the Vmax values were: right ventricle, 0.32 +/- 0.04; left ventricle, 0.42 +/- 0.03; gastrocnemius, 0.52 +/- 0.02; (p greater than 0...
1975: Recent Advances in Studies on Cardiac Structure and Metabolism
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