RESUMO
A portable ECG monitor is introduced in the paper, which has a temporary intravenous and transesophageal fixable rate pacing function. During the PSVT attack, the tachyarrythmia can be stopped by the transesophageal cardiac pacing while the ECG signals are monitored. The instrument has some advantages such as small size, low price and good practicality. It is worth while introducing and popularizing it to all hospitals.
Assuntos
Eletrocardiografia Ambulatorial , Monitorização Ambulatorial/instrumentação , Marca-Passo Artificial , Processamento de Sinais Assistido por Computador , Eletrocardiografia Ambulatorial/instrumentação , Desenho de Equipamento , Bloqueio Cardíaco/diagnóstico , Bloqueio Cardíaco/terapia , Frequência Cardíaca , Humanos , Marca-Passo Artificial/classificação , Software , Taquicardia/diagnóstico , Taquicardia/terapiaRESUMO
Polygraph has become a necessary instrument in interventional cardiology and fundamental research of medicine up to the present. In this study, a LabView development system (DS) (developed by NI in U.S.) used as software platform, a DAQ data acquisition module and universal computer used as hardware platform, were creatively coupled with our self-made low noise multi-channels preamplifier to develop Multi-channels electrocardiograph. The device possessed the functions such as real time display of physiological process, digit highpass and lowpass, 50Hz filtered and gain adjustment, instant storing, random playback and printing, and process control stimulation. Besides, it was small-sized, economically practical and easy to operate. It could advance the spread of cardiac intervention treatment in hospitals.
Assuntos
Eletrocardiografia/instrumentação , Monitorização Intraoperatória , Processamento de Sinais Assistido por Computador , Monitorização Fisiológica , SoftwareRESUMO
A temporary demand pacemaker with electrocardiosignal display is introduced in this paper. Double way low-noise electrocardiosignal preamplifier, amplitude limiter, high and low pass filter, 50 Hz notch filter, TTL level generator and stimulating pulse formation circuit are components of the hardware electrocircuit. The demand pacing and the electrocardiosignal display are separately controlled by the software in which the double microcontrollers communications technique is used. In this study, liquid crystal display is firstly used in body surface electrocardiosignal display or intracardial electrophysiologic signal display when the temporary demand pacemaker is installed and put into use. The machine has proven clinically useful and can be of wide appliation.