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Respiratory sinus arrhythmia (RSA) is frequently used as a noninvasive method for investigating vagal tone, in physiological, behavioral, and several clinical studies. [ 16 ] [ 17 ] [ 18 ] This can be done using electrocardiography (ECG) recording, [ 19 ] although other methods are also being developed that take advantage of the interactions ...
Sinus arrhythmia is a commonly encountered variation of normal sinus rhythm. Sinus arrhythmia characteristically presents with an irregular rate in which the variation in the R-R interval is more than 0.12 seconds (120 milliseconds). Additionally, P waves are typically mono-form and in a pattern consistent with atrial activation originating ...
Providers must be able to identify respiratory problems that are easily treatable (e.g., treated with oxygen, suctioning/ clearing airway, albuterol, etc.) and those that can rapidly progress to life-threatening conditions. Respiratory distress can progress to respiratory failure which can progress to cardiac arrest.
Respiratory arrhythmia (or respiratory sinus arrhythmia). [39] [40] This heart rate variation is directly caused by the central respiratory rhythm, faithfully tracks the respiratory rate across a range of frequencies and is a major cause of heart rate variability in humans (Cooper HE, Clutton-Brock TH & Parkes MJ (2004). Contribution of the ...
[18] [19] The main mechanism by which the parasympathetic nervous system acts on vascular and cardiac control is the so-called respiratory sinus arrhythmia (RSA). RSA is described as the physiological and rhythmical fluctuation of heart rate at the respiration frequency, characterized by heart rate increase during inspiration and decrease ...
Arrhythmias, also known as cardiac arrhythmias, are irregularities in the heartbeat, including when it is too fast or too slow. [2] A resting heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia , and a resting heart rate that is too slow – below 60 beats per minute – is called bradycardia . [ 2 ]
Paroxysmal supraventricular tachycardia is a type of arrhythmia that originates in the atrioventricular (AV) junction. The most common underlying anatomical cause of PSVT is atrioventricular nodal reentry, which accounts for more than half of the cases. [9]
The Bainbridge reflex may also contribute to respiratory sinus arrhythmia as intrathoracic pressure decreases during inspiration causing increased venous return. [3] [4] The reflex is named after Francis Arthur Bainbridge, an English physiologist. The Bainbridge reflex was one of the first neural cardiovascular reflexes to be described and ...