Normal excitation of the heart Cardiac electrical activity starts by the spontaneous excitation of “pacemaker” cells in the sinoatrial node in the right atrium. Pacemaker automaticity is due to spontaneous…
Bradyarrhythmias are due to sinus nodal disease ( Box 1.1 ) or atrioventricular conduction block ( Box 1.2 ). Box 1.1 Sinus Node Dysfunction (with accompanying symptoms) Sinus bradycardia Sinoatrial…
Case Hi, I’m calling you about a 22-year old female who I follow here in GI clinic due to her diagnosis of single ventricle palliation with a Fontan and her…
Case I have a 16-year old young man with history of an aborted sudden cardiac arrest and an implanted cardioverter defibrillator (ICD) who presented to urgent care this evening. Earlier…
Case I have a 13 year old in my office who is here for a routine well child evaluation. She has had cardiac surgery to repair a tetralogy of Fallot…
Case Hi this is the ER attending calling. I have an ambulance on route from a local high school. They are telling me that they have a 15-year old male…
Case Hi, I’m calling from the ER. We have an 11-year old who “collapsed” while at the park with his family. The family called 911, started CPR, but by the…
Case Hi, I’m calling from the ER. We have a 12 year old boy who sees cardiology for hypertrophic cardiomyopathy (HCM). He fainted today at school during recess. He looks…
Case Sorry to call you this evening but you are on call for pediatric electrophysiology right? I am the ICU fellow covering the CICU tonight along with my attending. We…
Case I have a 4 month old male who underwent VSD repair earlier today. His heart rate has been climbing all afternoon and now he is running a rate of 200….
