The document discusses various types of atrial flutter, including those with different block patterns such as 2:1, 4:1, and variable blocks, as well as conditions like high-grade AV block and 1:1 block. It also mentions AV nodal reentry tachycardia (AVNRT) and its reversion to sinus rhythm after an adenosine bolus. Additionally, atrial fibrillation is briefly referenced.

31.  Atrial Flutter with 2:1 Block

32.  Atrial flutter with variable block

33.  Atrial flutter with 4:1 block

34.  Atrial Flutter with Variable Block

35.  Atrial Flutter with High-Grade AV Block

36. Atrial Flutter with 1:1 Block

37. AVNRT reverts to sinus rhythm after an adenosine bolus

43. Sinus rhythm Atrial fibrillation

45. AV nodal reentry tachycardia (AVNRT)