Incidence of pain at rest and during nursing procedures in ICU patients: a longitudinal observational study

To evaluate pain monitoring in surgical and no-surgical ICU patients and to observe the presence of pain at rest and during nursing procedures.

A longitudinal, observational study was conducted at an intensive care unit in Italy. Based on the specific conditions of the patient the best rating scale was used (Numerical Rating Scale or the Critical-Care Pain Observation Tool). Two ICU nurses performed pain assessments before and during some nursing procedures that are considered nociceptive.

The pain incidence rate in 1,602 days of observation was 0.06 patient/day (59/1000 days of observation). The incidence rate of intense pain was 0.012 patient/day (12/1000 days of observation). Pain at rest was detected in 67 (27.6%) patients. Pain during procedures was found 134 (36.1%) times. In the 96 patients who were in pain the ICU stay (15.4 days + 7.8 vs 11.4 days + 5.6) and the days of mechanical ventilation (13.4 + 7.9 vs 9.7 + 4.9) was increased. Surgical patients had an increased pain risk than non-surgical patients (RR = 2.7, CI = 2.0-3.6; p<.001).

The incidence of pain was recorded in 39.5% of ICU patients. However further studies of larger patient samples are needed.