The rhythm is regular at a rate of 75 beats/min. A P wave occurs before each QRS complex (+) with a stable PR interval (0.20 sec). The P waves are positive in leads I, II, aVF, and V4-V6. This is a ...

ECG Challenge: Tennis Player With an Irregular Pulse An active 45-year-old visits his physician for a routine exam and is found to have an irregular pulse. What does an ECG reveal in this otherwise ...

The apical pulse (or precordial impulse) originates from the bottom of the heart and is felt on the outer left chest wall just under the nipple. The apical pulse can provide information about heart ...