Ventricular ectopic beats represented by -

Ventricular ectopic beats (VEBs) are commonly seen in daily clinical practice. They are largely asymptomatic but can cause upsetting symptoms in some patients. In normal heas, their occurrence is usually associated with no clinical significance RR intervals are irregular but there are normal PQRST complexes. Hea rate is usually normal, but slow in telemetered minipigs to 70 beats per minute. The irregularity in RR intervals is due to changes in vagal tone secondary to respiration, although not as great as in other species such as the dogs Ref Harrison 20th edition pg 1443