Ophthalmologists can play a pivotal role in detection and treatment of life-threatening disorders by recognizing syndromes associated with retinal tumors. Ophthalmologists can play a pivotal role in detection and treatment of life-threatening disorders by recognizing syndromes associated with retinal tumors.
The P wave in the ECG represents atrial depolarization, which results in atrial contraction.
It's this change that generates the electrical impulse that starts the heart's contraction. So we can associate the P wave of an ECG with the contraction of the atria. QRS Wave. If we move along the graph of the ECG, we see a small dip followed by a large spike and another dip. This series is usually considered together, and it's called the QRS wave.