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.
Sinus Rhythm EKG (ECG) Tracing. EKG tracings are printed on grid paper or displayed on a patient monitor. These tracings, the EKG waveform, have key features which indicate sinus rhythm or abnormalities (arrhythmias). There are six wave components which are commonly analyzed in determining if the EKG is a sinus rhythm.