The expression is a trinomial, like the expressions which we've been factoring in this lesson. There is a small variation in this problem however -- the first term has a coefficient that is not 1.
Ventricular Phonation (Plica Ventricularis). This occurs when a great amount of muscle tension above the vocal folds is created in the laryngeal area causing an approximation of the false vocal folds.entricular Phonation (Plica Ventricularis). This occurs when a great amount of muscle tension above the vocal folds is created in the laryngeal area causing an approximation of the false vocal folds.
There are four main characteristics of premature ventricular contractions (PVCs): 1  They are premature. That is they occur earlier than you would expect if you were to measure the previous R to R intervals.  They are ectopic. Meaning originating outside of the SA node.