منابع مشابه
On an automatic delineator for arterial blood pressure waveforms
Arterial blood pressure waveforms contain rich pathophysiological information; hence receive much attention in cardiovascular health monitoring. To assist computerized analysis, an automatic delineator was proposed for the fiducial points of arterial blood pressure waveforms, namely their onsets, systolic peaks and dicrotic notches. The presented delineator characterizes arterial blood pressure...
متن کاملEffect of prophylactic intraocular pressure-lowering medication on intraocular pressure spikes after intravitreal injections.
OBJECTIVE To determine if prophylactic use of intraocular pressure (IOP)-lowering medication is effective in reducing the IOP spikes after intravitreal injections of pegaptanib, bevacizumab, and ranibizumab. METHODS Seventy-one patients with exudative age-related macular degeneration received intravitreal injections of 1 of 3 anti-vascular endothelial growth factor medications: 30 patients re...
متن کاملDeriving heart period variability from blood pressure waveforms.
International standards for calculating heart period variability (HPV) from a series of R-wave intervals (R-R) in an electrocardiographic (ECG) recording have been widely accepted. It is possible, and potentially useful in various settings, to use systolic blood pressure waveform intervals to estimate HPV, but the validity of HPV derived from blood pressure (BP) waveforms has not been establish...
متن کاملVentilator waveforms and the physiology of pressure support ventilation.
Pressure support ventilation (PSV) is a commonly used mode. It is patient-triggered, pressure-limited, and (normally) flow-cycled. Triggering difficulty occurring during PSV is usually due to intrinsic positive end-expiratory pressure. The airway pressure generated at the initiation of inhalation is determined by the pressure support setting and the pressure rise time (pressurization rate) sett...
متن کاملNoninvasive haemodynamic monitoring using finger arterial pressure waveforms.
Haemodynamic monitoring may potentially lead to improved quality of care in haemodynamic compromised patients. However, the usefulness of invasive techniques using the pulmonary artery catheter is questioned. Noninvasive techniques which provide data on haemodynamics might provide a good alternative. New techniques have been developed in recent years to monitor cardiac output and other paramete...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1968
ISSN: 0001-4966
DOI: 10.1121/1.1970561