The effect of hyperpotassemia on the idioventricular pacemaker in complete A-V heart block and comparison with its effect on the heart rate in normal sinus rhythm

1961 ◽  
Vol 7 (6) ◽  
pp. 817-822 ◽  
Author(s):  
Otto F. Muller ◽  
Antonio C. DeLeon ◽  
Samuel Bellet
Keyword(s):  
Heart Rate ◽  
Sinus Rhythm ◽  
Heart Block ◽  
Normal Sinus Rhythm ◽  
Normal Sinus

Nonlinear Characterization of Heart Rate Variability in Normal Sinus Rhythm, Atrial Fibrillation and Congestive Heart Failure

2016 ◽  
Author(s):  
Syed Hassan Zaidi ◽  
Imran Akhtar ◽  
Syed Imran Majeed ◽  
Tahir Zaidi ◽  
Muhammad Saif Ullah Khalid
Keyword(s):  
Heart Failure ◽  
Atrial Fibrillation ◽  
Heart Rate ◽  
Congestive Heart Failure ◽  
Heart Rate Variability ◽  
Sinus Rhythm ◽  
Time Series Data ◽  
Normal Sinus Rhythm ◽  
Series Data ◽  
Normal Sinus

This paper highlights the application of methods and techniques from nonlinear analysis to illustrate their far superior capability in revealing complex cardiac dynamics under various physiological and pathological states. The purpose is to augment conventional (time and frequency based) heart rate variability analysis, and to extract significant prognostic and clinically relevant information for risk stratification and improved diagnosis. In this work, several nonlinear indices are estimated for RR intervals based time series data acquired for Healthy Sinus Rhythm (HSR) and Congestive Heart Failure (CHF), as the two groups represent different cases of Normal Sinus Rhythm (NSR). In addition to this, nonlinear algorithms are also applied to investigate the internal dynamics of Atrial Fibrillation (AFib). Application of nonlinear tools in normal and diseased cardiovascular states manifest their strong ability to support clinical decision support systems and highlights the internal complex properties of physiological time series data such as complexity, irregularity, determinism and recurrence trends in cardiovascular regulation mechanisms.

scholarly journals Lyme carditis presenting as atrial fibrillation in a healthy young male

2019 ◽  
Vol 12 (6) ◽  
pp. e229261 ◽  
Author(s):  
Muhammad Asim Shabbir ◽  
Muhammad Hamza Saad Shaukat ◽  
Muhammad Hashaam Arshad ◽  
Joseph Sacco
Keyword(s):  
Atrial Fibrillation ◽  
Sinus Rhythm ◽  
Heart Block ◽  
Normal Sinus Rhythm ◽  
Young Male ◽  
Rare Presentation ◽  
Normal Sinus ◽  
Lyme Carditis ◽  
Appropriate Treatment ◽  
High Degree

We present a case of a 23-year-old man coming with palpitations, found to be in atrial fibrillation (AF). He was initially managed with metoprolol for rate-controlled therapy—reverted to normal sinus rhythm and discharged home. He returned a few days later—this time in varying degrees of atrioventricular block including transient complete heart block. He was empirically started on intravenous ceftriaxone for suspected Lyme carditis, which subsequently led to the resolution of high-degree heart block. Lyme immunoglobulin G (IgG) and IgM returned positive. Follow-up ECG after the course of antibiotic exhibited normal sinus rhythm. AF is a rare presentation of Lyme disease but still exists. It should be considered in terms of appropriate treatment, especially in Lyme-endemic areas.

scholarly journals Impact of heart rate variability in patients with normal sinus rhythm on image quality in coronary magnetic angiography

2008 ◽  
Vol 28 (1) ◽  
pp. 74-79 ◽  
Author(s):  
Tarinee Tangcharoen ◽  
Cosima Jahnke ◽  
Uwe Koehler ◽  
Bernhard Schnackenburg ◽  
Christoph Klein ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Image Quality ◽  
Sinus Rhythm ◽  
Normal Sinus Rhythm ◽  
Normal Sinus

scholarly journals Heart rate dynamics distinguish among atrial fibrillation, normal sinus rhythm and sinus rhythm with frequent ectopy

2015 ◽  
Vol 36 (9) ◽  
pp. 1873-1888 ◽  
Author(s):  
Marta Carrara ◽  
Luca Carozzi ◽  
Travis J Moss ◽  
Marco de Pasquale ◽  
Sergio Cerutti ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Heart Rate ◽  
Sinus Rhythm ◽  
Normal Sinus Rhythm ◽  
Normal Sinus ◽  
Heart Rate Dynamics
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