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The effects of acute changes in cardiac volumes determined by hemodialysis on cardiac voltages were assessed in 18 chronically uremic patients by means of a vectorcardiographic and scalar Frank leads recording, immediately before, at the 90th and 180th minute, and immediately after hemodialysis. The following parameters were simultaneously monitored: body(More)
BACKGROUND Intracranial pressure (ICP) monitoring has become standard in the management of severe head injuries. A variety of monitoring techniques and devices are available, each with advantages and disadvantages; however there have been few studies in the pediatric population. METHODS To study the risk factors, efficacy, and complication rate of(More)
Distribution of left ventricular (LV) hypertrophy was assessed by wide-angle, 2-dimensional (2-D) echocardiography in 153 patients with hypertrophic cardiomyopathy and compared with the scalar electrocardiogram in the same patients. The most common electrocardiographic alterations were S-T segment changes and T-wave inversion (61%), LV hypertrophy (47%),(More)
It has been suggested that the adynamic or hypokinetic appearance of the ventricular septum is a unique echocardiographic feature of hypertrophic cardiomyopathy (HC). To determine how characteristic of HC the adynamic septum is, 70 patients with this disease, and 31 with other cardiac diseases that produce left ventricular (LV) hypertrophy and pressure(More)
Spontaneous and persistent changes in left ventricular (LV) outflow gradient have been observed occasionally in patients with hypertrophic cardiomyopathy (HC). However, the significance and frequency of such hemodynamic alterations have not been established. In this study, the serial preoperative hemodynamic status of 409 patients with HC was analyzed.(More)
For the purpose of assessing the cardiovascular effects of hemodialysis (HD), M-mode echocardiography was performed 24 hours before and 2 hours after this procedure in 15 patients with chronic renal failure. The results, which include computer analysis of digitized interventricular septum (IVS) and left ventricular posterior wall (LVPW), show the following(More)