A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...
His lungs are clear to auscultation. The rest of his exam is normal. A junctional rhythm occurs when the sinoatrial node (SA node) is not able to generate an action potential and the ...
Note the gradual onset of the junctional mechanism as the sinus cycle length increases from 635-670 milliseconds while the ectopic rhythm usurps the sinus rhythm at a more rapid cycle length of ...
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