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Sinoatrial arrest is when the sinus node does not discharge an impulse for ≥2 seconds. It can be caused by high vagal tone, drugs, hypoxia, ischemia or hyperkalemia. Learn how to recognize it on ECG and what to do.
31 Μαΐ 2018 · Sinus arrest is a failure of atrial activation due to a problem in the sinus node or its conduction. It can be asymptomatic or cause dizziness, syncope or palpitations. The ECG shows absence of P-QRS and a short P-P interval.
Sinoatrial arrest is a medical condition wherein the sinoatrial node of the heart transiently ceases to generate the electrical impulses that normally stimulate the myocardial tissues to contract and thus the heart to beat.
Sinus pause and arrest are delayed impulses from the sinoatrial node lasting 2 to 10 seconds, seen on ECG as absent P waves or QRS complexes. They may be caused by medications, ageing, hypothyroidism, etc. and may require pacemaker implantation.
5 Ιαν 2023 · Sinus node dysfunction arises from ischemia and necrosis of pacemaker cells because of a reduction in arterial blood secondary to exacerbating coronary artery disease and myocardial infarction. The article reviews the causes, characteristics, and types of sinus arrest in detail.
Sinus arrest results from failure of impulse generation in the sinus node. It is manifested as a pause in the rhythm for a duration that is not a multiple of the sinus cycle length.
8 Οκτ 2024 · Sinus arrest: Prolonged absence of sinus node activity (absent P waves) > 3 seconds.
