A LPN is caring for a client with hypertension whose blood p…

A LPN is caring for a client with hypertension whose blood pressure had increased from 154/78 mm Hg to 196/98 mm Hg with a heart rate of 110 beats per minute during the past hour. The LPN goes to lunch without reporting the change to the healthcare provider and the client suffers a cardiac arrest. What principle has the LPN violated?