Clinical Significance of Fibrillatory Wave Amplitude *

نویسنده

  • Yung-Zu Tseng
چکیده

Seventy-eight patients with chronic nonrheumatic atrial fibrillation were studied by transesophageal echocardiography with regard to the left atrial ap¬ pendage function and its relation to the coarseness of atrial fibrillation on electrocardiogram. These 78 pa¬ tients (52 men and 26 women; mean age, 66± 10 years; range, 40 to 94 years) were classified into two groups according to the presence of coarse (group 1, n=46; those with the greatest amplitude of fibrillatory wave in lead Vi^l mm) or fine (group 2, n=32; those with¬ out the coarse fibrillatory wave in lead Vi) atrial fibrillation on a standard 12-lead electrocardiogram within 1 month of echocardiographic studies. There

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Simple Atrial Fibrillatory Wave Reconstruction Method for Frequency Analysis of Atrial Fibrillation Using Single- Lead Ecg

A cosine-function-based approximation method is proposed to reconstruct atrial fibrillatory wave in QRST intervals for estimating dominant frequency of atrial fibrillation (AF) using single-lead ECG. It is hypothesized that atrial fibrillatory waves in two adjacent QRST intervals can be approached by a cosine function and direct component. As harmonics of dominant frequency are neglected, the d...

متن کامل

Left atrial appendage flow in nonrheumatic atrial fibrillation : relationship with pulmonary venous flow and ECG fibrillatory wave amplitude.

OBJECTIVE This study was conducted (1) to examine the relationship between left atrial appendage (LAA) flow velocity and pulmonary venous flow (PVF) variables during nonrheumatic atrial fibrillation (AF), and (2) to determine whether a reduction in LAA flow is reflected by the fibrillatory wave amplitude on the surface ECG. BACKGROUND Although LAA Doppler echocardiographic signals provide inf...

متن کامل

Atrial fibrillatory rate and risk of stroke in atrial fibrillation.

AIMS In atrial fibrillation (AF), a relation between electrocardiogram (ECG) parameters such as fibrillatory wave amplitude and stroke has been sought with conflicting results. In this study, we tested the hypothesis that the atrial fibrillatory rate of surface ECG lead V1 is related to stroke risk and may consequently be helpful for identifying high-risk patients. METHODS AND RESULTS Atrial ...

متن کامل

Stationarity of Surface ECG Atrial Fibrillatory Wave Characteristics in the Time and Frequency Domains in Clinically Stable Patients

Stationarity of surface ECG fibrillatory (f) wave characteristics over 24 hours in clinically stable patients was studied. Interand intrapatient differences of f wave characteristics (after QRS-T cancellation) in the time and frequency domains were evaluated by ANOVA. Shortterm peak frequencies of all the patients ranged from 4.6 to 8.0 Hz, while one SD for each patient ranged from 0.20.5 Hz. T...

متن کامل

The B"{a}cklund transformation method of Riccati equation to coupled Higgs field and Hamiltonian amplitude equations

In this paper, we establish new exact solutions for some complex nonlinear wave equations. The B"{a}cklund transformation method of Riccati equation is used to construct exact solutions of the Hamiltonian amplitude equation and the coupled Higgs field equation. This method presents a wide applicability to handling nonlinear wave equations. These equations play a very important role in mathemati...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007