E. (1) sea shell fossils (2) it is made of old ocean floor that got uplifted during collision. 4. At convergent plate boundaries, the volcanic mountain chains that form are called (1) ________ in an ocean-. ocean setting and (2) __________ in an ocean-continent setting.
Poor R wave progression is a vague term used to describe the transition in voltage in the precordial leads of an electrocardiogram (ECG). It is not a diagnosis but simply describes a pattern frequently noted. In a normal individual there is a progressive increase in the magnitude of the voltage in the leads from V1 to V4.
The QRS complex is a specific sequence of deflections seen on the printout of an ECG, representing the depolarization of the right and left ventricles of the heart.Cardiac arrhythmias can be diagnosed by analyzing the QRS complex on an ECG.igh blood pressure may cause left ventricular hypertrophy, which can be diagnosed by analyzing the QRS complex on an ECG. An EKG is often used to continuously monitor the heart rate and rhythm of a critically ill patient in order to catch abnormalities quickly. An ECG printout shows five deflections or waves.