• Puneet Khanna, Ravinder Kumar Pandey, Chandralekha Chandralekha, Ankur Sharma, and Neha Pangasa.
• Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, New Delhi, India.
• Saudi J Anaesth. 2018 Jul 1; 12 (3): 384-388.

Background And ObjectivesPain assessment of nonverbal, critically ill patients continues to present a challenge in Intensive Care Unit (ICU). The Critical-Care Pain Observation Tool (CPOT) rates critically ill patients' pain based on clinical observation. In the present study, the accuracy of CPOT was compared with physiological indicators of pain in mechanically ventilated, critically ill patients.MethodsThis quantitative prospective observational study was conducted to assess pain in the critically ill, mechanically ventilated patients in comparison to physiologic indicators such as blood pressure and heart rate. A repeated measures design was chosen, and a sample size of 180 was taken from 60 patients with sepsis, acute exacerbations of chronic obstructive pulmonary disease, community-acquired pneumonia, and postsurgical patients in the ICU. The two painful procedures chosen were tracheal suction and patient positioning. The data were collected at rest, at tracheal suctioning, 20 min later at positioning of the patient, and final reading 20 min later. Three testing periods, each including 4 assessments for a total of 12 pain assessments with sixty patients, were completed during each patient's ICU course. A total of six assessments were done with the patient at rest and three each with pain stimulus of tracheal suctioning and patient positioning.ResultsThere was a significant increase in both hemodynamic variables (systolic blood pressure and diastolic blood pressure) during painful procedures except for the heart rate during positioning. The correlation between the CPOT and Ramsay scale was negative and significant.ConclusionsThe present study provides evidence that the CPOT has good psychometric properties. It might prove useful for pain assessment in uncommunicative critically ill patients.

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