New pain assessment parameter, called the Variation Coefficient of Pupillary Diameter (VCPD) described. This parameter allows evaluating the pain of patients during uterine contractions in obstetrical labor, and postoperatively in recovery room. This parameter also allows evaluating the level of pain in Intensive Care Unit (ICU), in intubated or tracheotomized patients moderately sedated (Riker score 3 or 4).
This study propose to recalculate the Variation Coefficient of Pupillary Diameter (VCPD) from pupil recordings performed in the Intensive Care Unit (ICU) in 2015-2016 and kept in the patients' records. From there, the Variation Coefficient of Pupillary Diameter (VCPD) will compare to the Behavioral Pain Scale (BPS), considered the gold standard pain assessment
Study Type
OBSERVATIONAL
Enrollment
120
Datas analysed by medical records : pupillary parameters: pupillary diameter and pupillary diameter variation. heart rate, the blood pressure, the Behavioral Pain Scale (BPS) pain score before and during painful procedures. The pupillary parameters were recorded with the AlgiScan® pupillometer (iDMed, Marseille, France), which allows the recording of Pupillary Diameter (PD) variations at the patient's bed at a sampling frequency of 67 hertz.
CHU Saint-Etienne
Saint-Etienne, France
Correlation between fluctuations in Pupillary Diameter (PD), as assessed by the Variation Coefficient of Pupillary Diameter (VCPD) and the level of pain.
Variation Coefficient of Pupillary Diameter (VCPD) calculate from continuous pupil recordings during tracheal aspirations, considered as a painful procedure. The nurse in charge of the patient scored the Riker sedation score before endotracheal suctioning and the pain level estimated by the Behavioral Pain Scale (BPS) scale before and during endotracheal suctioning.
Time frame: Months: 1
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