Results 261 to 270 of about 275,052 (295)
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Extracardiac pressure and ventricular haemodynamics
Cardiovascular Research, 1987To investigate the relative influence of pericardial and intrathoracic pressures on left and right ventricular diastolic and systolic pressures two experimental groups were studied: group 1-10 open chest dogs with a controlled pericardial effusion; and group 2 - five closed chest dogs with a controlled pneumothorax at constant transpulmonary pressure ...
Joseph S. Janicki +3 more
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Correlation of right ventricular pressure with right ventricular weight
American Heart Journal, 1963Abstract The weight of the right ventricle expressed as a per cent of the total myocardial weight (RVT × 100) was related to right ventricular pressure in the neonatal puppy. It was shown that during the first 4 weeks of life the regression curves of the right ventricular pressure and RVT were strikingly similar, thus establishing this quantitative ...
Wiltz W. Wagner +2 more
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Left ventricular effects on right ventricular developed pressure
Journal of Applied Physiology, 1976The possibility that left ventricular (LV) performance might affect right ventricular (RV) function through the myocardium was examined by using isolated, flow-perfused, paced rabbit hearts beating isovolumically. ReducingLV volume from its optimal volume to zero caused a 5.7% decrease (N = 10, Pless than 0.001) in right ventricular developed pressure
Alfred A. Bove +4 more
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Regulation of left ventricular pressure fall
European Heart Journal, 1990Left ventricular pressure (LVP) fall is a manifestation of relaxation and is therefore regulated by non-uniformity and load, besides regulation by muscle inactivation. Non-uniformity and load are important and independent regulators of LVP fall. Non-uniformity induces a premature onset and decreased rate of LVP fall. With regard to load, the effects of
Gillebert, Thierry C. +1 more
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Simultaneous Recording of the Ventricular Fluid Pressure and the Epidural Pressure
European Neurology, 1972Simultaneous recordings of the epidural pressure (EDP) and the ventricular fluid pressure (VFP) were studied in 1 dog and 3 patients, including 2 with severe intracranial hypertension.
G. Sundbärg, Helge Nornes
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Nonuniform cavity pressure and ventricular mechanics
Mechanics Research Communications, 1995The anisotropic elastic behavior of the left ventricle (LV) due to fiber orientation is now well recognized. Treating the myocardium as a fluid-fiber continuum has been successfully applied to the LV modeled as a finite thick-walled cylindrical cavity with time-varying, but spatially uniform, pressure (when the cavity pressure is nonuniform, the ...
Jacques Ohayon +2 more
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High-Pressure Ventricular Septal Defects
JAMA: The Journal of the American Medical Association, 1964Forty patients with preoperative systolic pulmonary pressures exceeding 80 mm Hg were analyzed by recatheterization four months to five years postoperatively. Thirty-two were found to be asymptomatic. Improvement in heart size and pulmonary vascular markings were noted, as well as reduction of pulmonary hypertension.
C. Walton Lillehei +3 more
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Atrial and Ventricular Pressures in Atrial Flutter
Pacing and Clinical Electrophysiology, 1999The hemodynamic effects of atrial flutter (AF) are unknown. The purpose of the present study was to investigate the changes in atrial and ventricular pressures after induction of AF. In 23 patients with paroxysmal AF (age 59 ± 9 years), a hemodynamic study was performed both during sinus rhythm and after induction of the tachyarrhythmia.
Nelly Paparella +4 more
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“Auricularization” of right ventricular pressure curve
American Heart Journal, 1961Abstract Two cases are presented which show particular hemodynamic patterns, characterized by the recording of an auricular pressure curve from the right ventricle and the main pulmonary artery. Anatomic study proved the clear distinction between the two subjects.
Gino Battaglia +2 more
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Cerebrovascular response to elevation of ventricular pressure
Acta Neurochirurgica, 1989The behaviour of Pial vessels to levels of CSF-pressure between 10 and 100 mmHg induced by vetricular infusion of mock CSF, was observed in 6 cats under barbiturate and N2O anaesthesia, using the cranial window technique and videoangiometry. Supratentorial pressure (STP) equaled infratentorial pressure in the cisterna magna (CMP) throughou.
Ludwig M. Auer, Y. Kato
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