نتایج جستجو برای: electrocardiograph
تعداد نتایج: 586 فیلتر نتایج به سال:
The semiconductor technology for a certain function, such as instrumentation amplifier ICs is currently developing very fast, commercially available and can be obtained easily on the market. An important part in process of data acquisition, especially biopotential signals from human body because its amplitude small susceptible to noise interference. selection proper will produce an accurate sig...
Baselines wander and power line interference reduction is the first step in all Electrocardiograph (ECG) output signal function. The baseline wander is caused by changeable electrode-skin impedance, patients’ movements and breath. The ECG signal is also degraded by additive 50 or 60 Hz power line interference. Adaptive filter is a primary method to ECG signal filters, since it does not require ...
EEG with co-registered electrocardiography was recorded during at least two interictal epileptiform EEG discharges in each of 11 patients who later suffered from sudden unexpected death in epilepsy (SUDEP), and from another 11 age and sex matched patients, also with uncontrolled tonic-clonic seizures, drawn from the same centre who were still alive at the time of investigation (non-SUDEPs). A c...
The electrocardiographic records taken during vagus stimulation by pressure from children suffering with chronic heart disease have shown that the stimulation of the vagi in these cases is strikingly effectual. In some of the cases, a definite difference was demonstrated between the action of the right and left vagi. The control of the rate of the heart-beat seemed to predominate usually in the...
A simple method for measuring digital arterial pressure and its recording on usual EKG heat-writing paper was devised. The method enabled us to measure exactly the digital systolic as well as diastolic blood pressure without providing the calibrating scale of pressure, since the pressure scale is recorded on the paper automatically as pulse signals at the interval of 10mmHg. The pulse waves are...
Several antimalarials can cause significant prolongation of the electrocardiograph QT interval, which can be associated with an increased risk of potentially lethal ventricular arrhythmias. High doses of artemether and artemotil have been associated with QT prolongation in dogs, raising the possibility of a class effect with the artemisinin derivatives. Serial electrocardiograms were recorded, ...
Background: Extracorporeal shock wave lithotripsy (ESWL), as an initial treatment of kidney stones, has complications to prevent irritation of patient’s life. In order to conduct this treatment, it sounds important to understand its effects. The Patients: Three patients underwent extracorporeal lithotripsy due to renal stone, ventricular tachycardia incurred during lithotripsy. None o...
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