“…Due to the relevance of this clinical symptom, both the Agency for Healthcare Research and Quality and the American Society of Pain and the Joint Commission on Accreditation on Healthcare Organizations (JCAHO) recommend that, to optimally control pain, it should be regularly and adequately measured and in the same clinical environment of vital signs, being defined as the "fifth vital sign" 6 . Considering pain as the fifth vital sign is a way to systematize pain perceived by patiens 5 . Pain documentation may, alone, improve communications among professionals assisting patients 7 .…”