VALIDation of Bedside Ultrasound of Muscle Layer Thickness of the Quadriceps in the Critically Ill Patient: The VALIDUM Study

The overall objective is to evaluate the validity of bedside US of QMLT and MF-BIA by comparing measurements from US and MF-BIA to those estimates of lean body mass obtained from CT Scan of abdomen when done for clinical reasons.

The investigators expect to observe a high degree of correlation between these 3 baseline measures and the changes in US measures and MF-BIA over time to correlate with changes to CT Scan measures of lean body mass.

This is a multi center, prospective, observation study across 5-6 intensive care units which will enroll 200 participants over a 12 month enrollment period followed by a 6 month period to complete data analysis.

This study will enroll a broad heterogeneous participant population who will be admitted to the ICU for inpatient care. We are particularly interested in the cohort of participant with trauma but will enroll non-trauma participants who have CT scans as well to do some between group comparisons. Participants enrolled to this study will be followed until they are discharged from the index hospital.

This is a prospective, observational study therefore no specific interventions will be associated with this study. The following information will be collected and recorded during ICU and hospital stay: