[1] Univ Turku, Dept Nursing Sci, Turku 20014, Finland
[2] Turku Univ Hosp, Intens Care Unit, Turku, Finland
[3] Univ Turku, Dept Clin Med, Turku, Finland
[4] Satakunta Cent Hosp, Dept Anesthesia & Intens Care, Pori, Finland
[5] Turku Univ Hosp, Dev Serv, Turku, Finland
[6] Turku Univ Hosp, Div Perioperat Serv Intens Care Med & Pain Manage, Turku, Finland
[7] Univ Turku, Dept Anesthesiol & Intens Care, Turku, Finland