by Mark | Aug 28, 2019 | Cardiac Electrophysiology, Cardiology, General Public, Science
I am excited to announce that work from our laboratory was recently published in Circulation: Arrhythmia and Electrophysiology, as an Editor’s Choice Article. In this work, we show for the first time that the native electrical signal in the heart can be...
by Mark | Dec 13, 2015 | Cardiac Electrophysiology, Cardiology, General Public
What is AVNRT? Rapid beating of the heart can cause the sensation of palpitations, which are often described as fluttering, pounding, and beating sensations in the chest. Sometimes these palpitations are rapid enough to affect other parts of the body, and people with...
by Mark | Oct 1, 2015 | Cardiac Electrophysiology, Cardiology, Science
Indications for Pacemaker (Class I and IIa/b Recommendations) Sinus node dysfunction (SND) with symptomatic bradycardia Symptomatic chronotropic incompetence Required drug therapy causing symptomatic bradycardia SND with HR < 40 bpm; bradycardia and symptom...
by Mark | Sep 29, 2015 | Cardiology, Science
Constrictive Pericarditis Pathology of constriction: Thick scarred pericardium equalizes 4 chamber pressure, limits ventricular filling, reduces cardiac volume. JV pressure wave form in constriction: rapid ventricular (RV) filling causes rapid Y-descent Then,...
by Mark | Sep 29, 2015 | Cardiology, Science
Pheochromocytoma vs. Carcinoid – What’s the Difference?? Two neuroendocrine tumors affecting the cardiovascular system and often get confused are carcinoid and pheochromocytoma. I thought I would include a brief primer on the two, because both secrete...
by Mark | Sep 23, 2015 | Cardiology
Indications for Nuclear Myocardial Perfusion Imaging (MPI): Exercise MPI: Intermediate-high risk, able to exercise, with uninterpretable ECG (class I) or interpretable ECG (class IIa) Known SIHD, able to exercise, new symptoms Contraindications to Exercise...
by Mark | Sep 8, 2015 | Cardiac Electrophysiology, Cardiology, General Public
What is atrial tachycardia? Atrial tachycardia (AT) is a disorder of fast heart rhythm that begins in the upper chambers of the heart, the left and right atria (1). AT can start from one area, or focus, in either atrium and is called focal AT. AT can also...
by Mark | Sep 2, 2015 | Cardiology
The Most Important Articles in Hypertension Below are what I believe to be the most important articles in hypertension in mid-2015. Each blue trial name is a link to the trial page. In many cases where the journal article is open access, the link will open the full...
by Mark | Aug 29, 2015 | Cardiac Electrophysiology, Cardiology, General Public
What is Atrial Fibrillation? Atrial fibrillation is the most common sustained arrhythmia in the human heart (1). In the United States today, over 5.6 million patients have been diagnosed with atrial fibrillation and this number is growing; by the year 2030 it...
by Mark | Aug 29, 2015 | Cardiology
The Most Important Articles in Peripheral Arterial Disease Below are what I believe to be the most important articles in peripheral arterial disease in mid-2015. Each blue trial name is a link to the trial page. In many cases where the journal article is open...
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