The technique of impedance cardiography.
نویسندگان
چکیده
منابع مشابه
Bioimpedance cardiography measurements of cardiac output and other cardiovascular parameters.
This paper describes impedance technique and device types, discusses hemodynamic data parameters that are available, discusses the differences between impedance cardiography and data that are derived from invasive pulmonary artery catheters, and explains how nurses can apply bioimpedance cardiography in a variety of patient populations.
متن کاملقلب نگاری امپدانسی روشی برای پایش غیرتهاجمی حجم ضربه ای: یک مطالعه ی مقدماتی
Abstract Background: Impedance cardiography (ICG) is a simple and inexpensive technique for non-invasive and continues measurement of stroke volume. Due to non-invasive nature, ICG is becoming increasingly used in research and clinical applications. With regard to lack of domestic impedance cardiograph and limited similar imported products in the country, an inexpensive and portable protot...
متن کاملImproved Detection of Ventricular Ejection Time for Impedance Cardiography
Impedance cardiography is a noninvasive technique for monitoring stroke volume (SV), based on sensing variation in the thoracic impedance due to blood flow. In this technique, first derivative of impedance (dz/dt) is used to calculate two parameters: ventricular ejection time and (-dz/dt)max. Respiration and motion artifacts cause base line drift in the sensed impedance waveform, and this resul...
متن کاملWavelet Based Denoising for Suppression of Motion Artifacts in Impedance Cardiography
Introduction Impedance cardiography is a noninvasive technique for monitoring the changes in the electrical impedance of the thorax z(t), caused by variation in the blood volume during the cardiac cycle [1]. Time derivative of the thoracic impedance is known as the impedance cardiogram (ICG) and it is used for estimating the ventricular ejection time (Tlvet), the negative peak of ICG ((-dz/dt)m...
متن کاملCardiac output measured by transthoracic impedance cardiography at rest, during exercise and at various lung volumes.
1. Cardiac output measured by transthoracic impedance cardiography has been compared with simultaneous measurements made by the indirect Fick CO2 rebreathing method in nine adults and 14 children. All were healthy normal volunteers. Sixty-six comparisons were made at rest and during steady exercise at work loads up to 100 W. 2. Impedance measurements of cardiac output were consistently higher t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- European heart journal
دوره 18 9 شماره
صفحات -
تاریخ انتشار 1997