Question

EKG: during the EKG you note the presence of more P waves than QRS complexes. You also note all PR intervals have a uniform length but random QRS complexes are dropped. What type of atrioventricular block is most likely present?

Answer 1

A third-degree block is most likely present. In this type of block, there is no correlation between atrial activity (P waves) and ventricular activity (QRS complexes).

Step-by-step explanation:

A third-degree block is most likely present. In a third-degree block, there is no correlation between atrial activity (the P wave) and ventricular activity (the QRS complex). This means that some of the impulses initiated by the SA node do not reach the AV node, while others do. In this case, you note the presence of more P waves than QRS complexes, as well as uniform PR intervals but dropped QRS complexes.