Following recruitment all participants will be assessed by a medical doctor or respiratory therapist (trained on the study) who will fill out the MIND questionnaire on admission and make sure the other scales/questionnaires are also completed. On the same day of the collection of MIND, MRC score for quadriceps and biceps strength, Sequential Organ Failure Assessment (SOFA) score, Glasgow coma scale, Hospital Anxiety-depression scale (HADS), EuroQol-5D, Gussago Dependence Nursing Scale (GNS) will be also gathered. After 1 day and 30 days the MIND questionnaire will be also evaluated. Index of ADL-(Katz index) will be evaluated on discharge as well as weaning rate and survival.