Results 341 to 350 of about 4,977,534 (400)
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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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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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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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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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A clinical comparison of subdural screw pressure measurements with ventricular pressure [PDF]
Journal of Neurosurgery, 1983 ✓ Simultaneous recordings of intracranial pressure (ICP) from a single-lumen subdural screw and a ventricular catheter were compared in 10 patients with severe head injury. Forty-one percent of the readings corresponded within the same 10 mm Hg ranges, while 13% of the screw pressure measurements were higher and 46% were lower than the associated ...
J. O. Rowan +3 more
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Ventricular pressure-volume relations in vivo
European Heart Journal, 1992A number of fundamental mechanical properties of cardiac muscle as well as of the total ventricle are discussed. These include: Starling's law, shortening deactivation, homeometric autoregulation, and so-called hyperactivation associated with a small amount of ejection.
Jan Baan +2 more
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Right ventricular adaptation to pressure overload
Current Opinion in Critical Care, 2010Pressure overload of the right ventricle results in right ventricular failure and death. Identifying right ventricular dysfunction at less severe stages, which would allow for more effective intervention, has been limited largely due to complex three-dimensional geometry, complex left ventricular/septum interactions, and lack of accepted approaches to ...
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Under-pressure: Right Ventricular Infarction
The American Journal of Medicine, 2015PRESENTATION When a 60-year-old woman’s electrocardiogram (ECG) indicated both anterior and inferior ST-segment elevation myocardial infarction, it was unclear which artery was blocked until treatment with nitroglycerin and morphine rendered her hypotensive.
Vladimir Lakhter +2 more
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