ALLMedicine™ Sinus Bradycardia Center

Nov 4th, 2020 - It is highly debated how cyclic adenosine monophosphate-dependent regulation (CDR) of the major pacemaker channel HCN4 in the sinoatrial node (SAN) is involved in heart rate regulation by the autonomic nervous system. We addressed this question us...

Oct 28th, 2020 - A 53-year-old male status post pacemaker placement three months prior for sinus bradycardia presented with worsening dyspnea, holosystolic murmur, and a ventricular-paced right bundle branch block on electrocardiogram. Transesophageal echocardiogr...

Oct 17th, 2020 - Ventricular tachycardia (VT) is a rare cause of tachycardia during the fetal life. Coexistence of VT with sinus bradycardia or second-degree heart block strongly suggests long QT syndrome (LQTS) [1-3] and needs to administrate to the mother beta-b...

Oct 11th, 2020 - Coronary CT angiography (CCTA) is increasing seen as a first line investigation in patients with suspected coronary artery disease. Heart-rate control improves the image quality and diagnostic accuracy of CCTA. Typically, beta-blockers are adminis...

Sep 15th, 2020 - Calmodulin mutations are associated with arrhythmia syndromes in humans. Exome sequencing previously identified a de novo mutation in CALM1 resulting in a p.N98S substitution in a patient with sinus bradycardia and stress-induced bidirectional ven...

Nov 4th, 2020 - It is highly debated how cyclic adenosine monophosphate-dependent regulation (CDR) of the major pacemaker channel HCN4 in the sinoatrial node (SAN) is involved in heart rate regulation by the autonomic nervous system. We addressed this question us...

Oct 28th, 2020 - A 53-year-old male status post pacemaker placement three months prior for sinus bradycardia presented with worsening dyspnea, holosystolic murmur, and a ventricular-paced right bundle branch block on electrocardiogram. Transesophageal echocardiogr...

Oct 17th, 2020 - Ventricular tachycardia (VT) is a rare cause of tachycardia during the fetal life. Coexistence of VT with sinus bradycardia or second-degree heart block strongly suggests long QT syndrome (LQTS) [1-3] and needs to administrate to the mother beta-b...

Oct 11th, 2020 - Coronary CT angiography (CCTA) is increasing seen as a first line investigation in patients with suspected coronary artery disease. Heart-rate control improves the image quality and diagnostic accuracy of CCTA. Typically, beta-blockers are adminis...

Sep 15th, 2020 - Calmodulin mutations are associated with arrhythmia syndromes in humans. Exome sequencing previously identified a de novo mutation in CALM1 resulting in a p.N98S substitution in a patient with sinus bradycardia and stress-induced bidirectional ven...

Jun 30th, 2019 - The correct diagnosis is sinus bradycardia, interpolated junctional premature complexes in a trigeminal pattern, and retrograde concealed conduction. Figure 2. Courtesy of Dr Podrid Discussion The rhythm is irregular, but there is a pattern. All o...

Aug 8th, 2018 - ANSWER The correct interpretation includes marked sinus bradycardia with sinus arrhythmia, biatrial enlargement, and an RSR’ pattern in lead V1 suggestive of right ventricular conduction delay. A heart rate below 60 beats/min is considered sinus b.

Jun 6th, 2018 - ANSWER The correct interpretation includes sinus bradycardia with marked sinus arrhythmia and junctional escape beats, and an intraventricular conduction delay. This type of ECG is not ideal for calculating the ventricular rate via the 30/150/100.

Mar 7th, 2018 - ANSWER The correct interpretation includes sinus bradycardia, marked sinus arrhythmia, junctional escape beats with sinus arrest or a transient atrioventricular (AV) block, and an intraventricular conduction defect. Sinus bradycardia is diagnosed.

Jan 3rd, 2018 - ANSWER The correct interpretation includes marked sinus bradycardia with a second-degree atrioventricular (AV) block (Mobitz I) and occasional junctional escape, left-axis deviation, and evidence of an inferior MI. Poor R-wave progression is also.