TLS Online TPP Program

#Question id: 10977


A 60-year-old man’s EKG shows that he has an R-R interval of 0.55 sec. Which of the following best explains his condition?

#Unit 7. System Physiology – Animal
  1. He has fever
  2. He has a normal heart rate
  3. He has excess parasympathetic stimulation of the S-A node
  4. He is a trained athlete at rest