electrocardiogram traces

• What does ECG stand for?


  electrocardiogram
• how is electrical activity detected


  though the use of electrodes and a cathode ray oscilloscope
• what is a p wave


  atrial depolarization
• what is the definition of a p wave


  the first part that shows atrial systole
• What is the QRS wave?


  ventricular depolarization
• what is the definition of the QRS wave


  this shows ventricular systole
• what is the t wave


  ventricular repolarisation
• what is the definition of a t wave


  this shows ventricular diastole
• What is the PR interval?


  This is the interval from the beginning of the P wave to beginning of the QRS wave
• Why is the QRS complex larger than the P wave?


  the qrs wave have more muscles and therefore the amplitude will be bigger
• what would a normal heart beat look like

  
• what would and irregular heart rate look like

  
• what does a heart attack look like on a ecg