Spectral Analysis of Heart Rate Variability in Patients With Inappropriate Sinus Tachycardia

1998 ◽  
Vol 31 (2) ◽  
pp. 169A-170A
Author(s):  
I Maia
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Sinus Tachycardia ◽  
Inappropriate Sinus Tachycardia

scholarly journals Spectral analysis of heart rate variability in patients with inappropriate sinus tachycardia

1998 ◽  
Vol 31 ◽  
pp. 169-170
Author(s):  
I.G. Maia ◽  
F.E.S. Cruz ◽  
M. Fagundes ◽  
R. Sá ◽  
S. Boghossian ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Sinus Tachycardia ◽  
Inappropriate Sinus Tachycardia

Heart rate variability in inappropriate sinus tachycardia

1998 ◽  
Vol 82 (4) ◽  
pp. 531-534 ◽  
Author(s):  
Agustin Castellanos ◽  
Federico Moleiro ◽  
Simon Chakko ◽  
Helbert Acosta ◽  
Heikki Huikuri ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sinus Tachycardia ◽  
Inappropriate Sinus Tachycardia

scholarly journals Inappropriate sinus tachycardia in post-COVID-19 syndrome

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Júlia Aranyó ◽  
Victor Bazan ◽  
Gemma Lladós ◽  
Maria Jesús Dominguez ◽  
Felipe Bisbal ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sinus Tachycardia ◽  
Structural Heart Disease ◽  
Inappropriate Sinus Tachycardia ◽  
Cardiac Autonomic Nervous System ◽  
2D Echocardiography ◽  
Inflammatory State ◽  
Common Observation

AbstractInappropriate sinus tachycardia (IST) is a common observation in patients with post-COVID-19 syndrome (PCS) but has not yet been fully described to date. To investigate the prevalence and the mechanisms underlying IST in a prospective population of PCS patients. Consecutive patients admitted to the PCS Unit between June and December 2020 with a resting sinus rhythm rate ≥ 100 bpm were prospectively enrolled in this study and further examined by an orthostatic test, 2D echocardiography, 24-h ECG monitoring (heart rate variability was a surrogate for cardiac autonomic activity), quality-of-life and exercise capacity testing, and blood sampling. To assess cardiac autonomic function, a 2:1:1 comparative sub-analysis was conducted against both fully recovered patients with previous SARS-CoV-2 infection and individuals without prior SARS-CoV-2 infection. Among 200 PCS patients, 40 (20%) fulfilled the diagnostic criteria for IST (average age of 40.1 ± 10 years, 85% women, 83% mild COVID-19). No underlying structural heart disease, pro-inflammatory state, myocyte injury, or hypoxia were identified. IST was accompanied by a decrease in most heart rate variability parameters, especially those related to cardiovagal tone: pNN50 (cases 3.2 ± 3 vs. recovered 10.5 ± 8 vs. non-infected 17.3 ± 10; p < 0.001) and HF band (246 ± 179 vs. 463 ± 295 vs. 1048 ± 570, respectively; p < 0.001). IST is prevalent condition among PCS patients. Cardiac autonomic nervous system imbalance with decreased parasympathetic activity may explain this phenomenon.

scholarly journals Role of increased sympathetic activity in the genesis of ambulatory ischemia: Spectral analysis of heart rate variability

1996 ◽  
Vol 27 (2) ◽  
pp. 398-399
Author(s):  
Tohru Kaji ◽  
Tetsuro Kohya ◽  
Fumishi Tomita ◽  
Tomohide Ono ◽  
Akira Kitabatake
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Sympathetic Activity
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