Actigraphy in the critically ill: Correlation with activity, agitation, and sedation

Mary Jo Grap, C. Todd Borchers, Cindy L. Munro, R. K. Elswick, Curtis N. Sessler

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


• OBJECTIVES: To determine the feasibility of continuous measurement of limb movement via wrist and ankle actigraphy (an activity measure) in critically ill patients and to compare actigraphy measurements with observed activity, subjective scores on sedation-agitation scales, and heart rate and blood pressure of patients. • METHODS: In a prospective, descriptive, correlational study, all activity of 20 adult patients in medical and coronary care units in a university medical center were observed for 2 hours and documented. Wrist and ankle actigraphy, heart rate, and systolic and diastolic blood pressure data were collected every minute. The Comfort Scale and the Richmond Agitation-Sedation Scale were completed at the beginning of the observation period and 1 and 2 hours later. • RESULTS: Wrist actigraphy data correlated with scores on the Richmond Agitation-Sedation Scale (r = 0.58) and the Comfort Scale (r = 0.62) and with observed stimulation and activity events of patients (r = 0.45). Correlations with systolic, diastolic, and mean arterial pressures were weaker. Wrist and ankle actigraphy data were significantly correlated (r = 0.69; P < .001); however, their mean values (wrist, 418; ankle, 147) were significantly different (t = 5.77; P < .001). • CONCLUSIONS: Actigraphy provides a continuous recording of patients' limb movement. Actigraphy measurements correlate well with patients' observed activity and with subjective scores on agitation and sedation scales. Actigraphy may become particularly important as a continuous measurement of activity for use in behavioral research and may enhance early recognition and management of the excessive activity that characterizes agitation.

Original languageEnglish (US)
Pages (from-to)52-60
Number of pages9
JournalAmerican Journal of Critical Care
Issue number1
StatePublished - Jan 2005
Externally publishedYes

ASJC Scopus subject areas

  • Critical Care


Dive into the research topics of 'Actigraphy in the critically ill: Correlation with activity, agitation, and sedation'. Together they form a unique fingerprint.

Cite this