Sinus arrest https://www.ecgguru.com/taxonomy/term/412/all en SSS (SICK SINUS SYNDROME) https://www.ecgguru.com/blog/sss-sick-sinus-syndrome <div class="field field-name-field-blog-image field-type-image field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/blog/sss-sick-sinus-syndrome"><img typeof="foaf:Image" src="https://www.ecgguru.com/sites/default/files/SSS%20ecgguru.jpg" width="2802" height="1784" alt="" /></a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>Why does this EKG indicate a sick sinus node? First, we observe a sinus rhythm with a rate just below 60 bpm. Then, there is a pause of approximately 3000 ms, followed not by a sinus beat, but by a junctional escape beat (retrograde/inverted P-wave immediately after the QRS complex). This ECG was recorded at the general practitioner's office, and it can be assumed that no vagal stimulus contributed to the arrhythmia.</p></div></div></div> Thu, 03 Aug 2023 07:37:06 +0000 Dr A Röschl 862 at https://www.ecgguru.com ECG Basics: Sinus Pause / Sinus Arrest https://www.ecgguru.com/ecg/ecg-basics-sinus-pause-sinus-arrest <div class="field field-name-field-ecg field-type-image field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/ecg/ecg-basics-sinus-pause-sinus-arrest"><img typeof="foaf:Image" src="https://www.ecgguru.com/sites/default/files/123%20Sinus%20arrest.jpg" width="1800" height="357" alt="" /></a></div></div></div><div class="field field-name-field-ecg-interpretation field-type-text-long field-label-hidden"><div class="field-items"><div class="field-item even"><p>This example of sinus arrest, also called sinus pause, shows a spontaneous return to sinus rhythm. &nbsp;There are many mechanisms by which pauses can occur on the ECG. One concept for beginner students to grasp is that, if the pause contains the equivalent of regular R-to-R intervals, and the first complex after the pause is "on time", &nbsp;we can expect that the sinus node kept firing, but did not penetrate the atria (exit block). If the pause is irregular in length, with the first beat after the pause seeming to come in randomly, we can call this sinus arrest or pause, understanding that there are many different mechanisms that can be at work here. Because what little we can see of the underlying sinus rhythm is irregular, or speeding up, we cannot discern absolutely that this is sinus arrest.&nbsp;</p><p>The bottom line for the patient, and for any level practitioner, is, "how is the patient tolerating this pause, and what does it mean to the patient's overall prognosis? &nbsp;In the short term, the patient may require emergency pacing while the cause of the dysfunction is investigated. If pauses are long enough to lower cardiac output, they can cause fainting. More than a few automobile accidents have happened as a result of this type of dysrhythmia.&nbsp;</p><p>For more advanced students, this short rhythm strip (Lead II) reveals sloping ST depression, and indicates the urgent need for a 12-lead ECG and other tests.&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p></div></div></div> Thu, 12 Dec 2013 17:03:41 +0000 Dawn 525 at https://www.ecgguru.com