Arrhythmia Pacemaker Physiology 
Cardiomatics
APRIL 5, 2024
Interpreting the waves and detecting abnormalities: Typically, the heart conducts electricity in a pathway starting in the sinoatrial node (SA), our heart’s “natural pacemaker”, located in the wall of the right atrium. 1] Arrhythmia Recognition: The Art of Interpretation, T.Garcia, D.Garcia. Usually does not exceed 160 bpm.
Dr. Smith's ECG Blog
JANUARY 9, 2024
She had a single chamber ICD/Pacemaker implanted several years prior due to ventricular tachycardia. Seeing as the patient has a single chamber ICD/pacemaker, pacing the ventricle will also lead to AV dyssynchrony that will compromise ventricular filling, further impairing hemodynamics. small squares in width (260ms).
All About Cardiovascular System and Disorders
MAY 2, 2024
It is a physiological adaptation helping athletes perform physical tasks better than non-athletes. Though sinus bradycardia is usual, other abnormalities like sinus arrhythmia, sinus arrest, wandering atrial pacemaker and coronary sinus rhythm have been described. References 1.Prior Prior DL et al. The athlete’s heart.
Dr. Smith's ECG Blog
JANUARY 23, 2024
Isoprenalin was discontinued, and a temporary transveous pacemaker was implanted. The patient stabilized following pacemaker placement. VT is the second most common presenting arrhythmia. Vaso or inotropic medications are not harmless, and can precipitate life threatening arrhythmias.
Circulation
NOVEMBER 10, 2023
Among 299 patients with CRT-pacemakers (BVP-111, LBBAP-188), VT/VF occurred in 8 patients in the BVP group vs. none in the LBBAP group (7.2% Physiologic resynchronization by LBBAP may be associated with lower risk of arrhythmias compared with BVP. HR 0.46;95%CI 0.29-0.74;p<0.001). p<0.001). vs 0%;p<0.001).
Dr. Smith's ECG Blog
APRIL 8, 2015
Negative predictors of adverse outcome: Pacemaker Pre-syncope or "near-syncope," but there is still some small risk (5, 18) These last two are identified in studies, but I consider them dangerous signs and symptoms in their own right, as above: 10. The most recent and probably best study is this: Canadian Syncope Arrhythmia Risk Score.
Frontiers in Cardiovascular Medicine
JANUARY 2, 2025
More than 1 million permanent pacemakers are implanted worldwide each year, half of which are in patients with high-grade atrioventricular block. Pacemakers provide adequate frequency support in the initial stage, but traditional right ventricular (RV) pacing may lead to or aggravate left ventricular dysfunction and arrhythmia.
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