Dr. Smith's ECG Blog
JANUARY 2, 2025
Because she has cardiomyopathy and ventricular dysrhythmias, the pacer included an Implanted Cardioverter-Defibrillator (ICD) Echo 6 days later after CRT: Normal estimated left ventricular ejection fraction. The septum is punctured with the active fixation screw of the lead - so essentially you bore the septum with the screw helix."
Dr. Smith's ECG Blog
MARCH 2, 2019
Opinions vary widely on the K level at which a patient must be admitted on a monitor because of the risk of ventricular dysrhythmias. My rationale is that if the K is affecting the ECG, then it is affecting the electrical milieu and can result in serious dysrhythmias. Until some real data is available, my opinion is this: 1.
Dr. Smith's ECG Blog
SEPTEMBER 7, 2020
Not all forms of idiopathic VT are predictable based on their ECG appearance ( Anderson et al, 2019 ). Anderson et al, 2019 ) — the chest lead LBBB pattern characteristic of LVOT ( as distinguished from RVOT ) — is that transition tends to occur earlier ( ie, by V1-V2 for LVOT vs after V3 or V4 for RVOT ).
Dr. Smith's ECG Blog
APRIL 15, 2020
Inferior MI results in scar tissue which is a likely source of a re-entrant ventricular dysrhythmia. M Y T HOUGHTS : I have previously reviewed my Systematic Approach to Rhythm Interpretation ( See My Comment in the October 16, 2019 post ). This would be the likely source of the VT. Figure-1: The 2 ECGs in this case ( See text ).
Dr. Smith's ECG Blog
JANUARY 5, 2020
IJC Heart and Vasculature 25(2019). Atrial dysrhythmias, and atrial fi brillation in particular, are frequently misdiagnosed by computer algorithms and then by the physician who overreads them. Shah and Rubin studied the computer rhythm interpretation of 2160 12-lead ECGs, compared to 2 cardiologists [ 18 ].
Dr. Smith's ECG Blog
DECEMBER 24, 2023
Flecainide : This is a potentially dangerous Na channel blocker which can cause ventricular dysrhythmias including ventricular fibrillation. For more on AFlutter — Please check out My Comment in the November 12, 2019 post and the May 1, 2023 post in Dr. Smith's ECG Blog ). She is already anti-coagulated, so that is not an issue.
Dr. Smith's ECG Blog
MARCH 6, 2020
Here is one full text article on the topic from Clinical Cardiology 2008: Diagnostic Approach and Treatment Strategy in Tachycardia-induced Cardiomyopathy Atrial Tachycardia (AT): another SVT in the ED Rapid dysrhythmia from non-sinus focus above AV node. E CG # 2 in Figure-1 is from the October 16, 2019 post on Dr. Smith’s Blog.
Expert insights. Personalized for you.
115 
Let's personalize your content