An electrocardiogram is a picture of the electrical conduction of the heart. By examining changes from normal on the ECG, clinicians can identify a multitude of cardiac disease processes. There are ...

(Also note: to see each image as an enlarged pdf, click on the word “enlarge” at the end of each caption.) Electrocardiography (ECG) is the science of converting the ionic depolarization of the heart ...

Left axis deviation occurs when the QRS axis falls between -30 and -90. There are a variety of causes, including left anterior fascicular block and left ventricular hypertrophy. See the ECG basics ...

While I haven’t been using the device as long as John, I was impressed at the device’s ease of use, intuitive software design, and handsome appearance. While the case itself is not as sturdy as some ...