Question

Regularity: Rate: P Waves: PRI: QRS: Interp: Regularity: Rate: P Waves: PRI: QRS: Interp: CHAPTER 7 Heart Blocks 171

Answer 1

7.7

Regularity: irregular

Rate: 50-60/ minute

p waves: p waves follows QRS complex and then one p wave is blocked and QRS is dropped , again p wave follows QRS with prolonging PR interval

PRI: prolonged

QRS: QRS follows every P wave for three complex , then once QRS is dropped, again QRS follows the P wave.

Interpretation: second degree AV block Mobitz type 1

7.8

Regularity: regular

Rate: 50-60beats /minute

p waves: regular, no missed beat

PRI: more than 300 millisecond

QRS: every P wave is followed by QRS

Interpretation: First degree AV block