Validity of the Children's Chelsea Critical Care Physical Assessment Tool (cCPAx-TR) in Turkish Pediatric Intensive Care Patients

Inclusion Criteria * Children aged 2 to 18 years * Admitted to the pediatric intensive care unit (PICU) * Clinically stable for bedside assessment * Parental or guardian informed consent obtained (and child assent when appropriate) * Able to perform or be observed for at least one item of the cCPAx-TR * Exclusion Criteria * Unstable hemodynamics or severe hypoxemia that prevents safe assessment * Deep sedation or neuromuscular blockade that prevents observation at both assessments * Severe orthopedic or neurological conditions (for example, unstable fractures or acute paralysis) that prohibit safe mobilization * Expected death or withdrawal of care within 24 hours * Refusal of consent by parents or guardians