preferred_name: Premature ventricular contractions, including couplets and triplets of variable morphology
preferred_name_lc: premature ventricular contractions, including couplets and triplets of variable morphology
label: Premature ventricular contractions, including couplets and triplets of variable morphology
label_lc: premature ventricular contractions, including couplets and triplets of variable morphology