Submitted by Dr A Röschl on Thu, 04/24/2025 - 01:13
Sometimes a single Holter ECG can tell a whole story. Here we see a single-channel ECG, each line representing about 30 seconds.
The ECG is from a 56-year-old man with severe ischemic cardiomyopathy who had an ICD implanted a few months ago due to recurrent ventricular tachycardia.
The explanation of what can be seen on this ECG can be found on the 2nd image.
Interestingly, the patient did not notice these events, they had occurred at night during sleep.
Submitted by Dr A Röschl on Thu, 12/21/2023 - 11:15
If ventricular tachycardia occurs in an Implantable Cardioverter Defibrillator (ICD) wearer, the ICD can combat this with 2 different forms of therapy, provided these are activated (which can be done using a programming device). First, the ICD attempts to override the tachycardia. The fastest pacemaker gets control of the heart. If this is not successful, the defibrillator function is used. Here you can see the limb leads. Initially there is a relatively slow ventricular tachycardia.
Submitted by Dr A Röschl on Mon, 12/18/2023 - 10:48
If ventricular tachycardia occurs in an Implantable Cardioverter Defibrillator (ICD) wearer, the ICD can combat this with 2 different forms of therapy, provided these are activated (which can be done using a programming device). First, the ICD attempts to override the tachycardia. The fastest pacemaker gets control of the heart. If this is not successful, the defibrillator function is used. Here you can see the limb leads. Initially there is a relatively slow ventricular tachycardia with a heart rate of approx. 125 bpm.
