Answer 27

27.  Choice B is the correct answer.  It is a narrow complex tachycardia.  It is a rapid sudden onset of a heart rate originating from an ectopic foci form the AV junction.  The P wave is inverted and occurring before during or after the QRS complex.  Rate is between 150-250 beats per minute.  PAT is when the ectopic focus occurs from the atria.  Often it is hard to tell if the the P wave is present or not.  Collectively these tachycardias are referred to as supraventricular tachycardia.  Ventricular tachycardia is a wide complex tachycardia that has a rate over 150 beats per minute.  Atrial Fibrillation is an irregularly irregular rhythm that the ectopic focus occurs from the atria.