The automated malnutrition assessment

Plasma Transthyretin as a Biomarker of Lean Body Mass and Catabolic States

Plasma transthyretin (TTR) is a plasma protein secreted by the liver that circulates bound to retinol-binding protein 4 (RBP4) and its retinol ligand. TTR is the sole plasma protein that reveals from birth to old age evolutionary patterns that are closely superimposable to those of lean body mass (LBM) and thus works as the best surrogate analyte of LBM. Any alteration in energy-to-protein balance impairs the accretion of LBM reserves and causes early depression of TTR production. In acute inflammatory states, cytokines induce urinary leakage of nitrogenous catabolites, deplete LBM stores, and cause an abrupt decrease in TTR and RBP4 concentrations. As a result, thyroxine and retinol ligands are released in free form, creating a second frontline that strengthens that primarily initiated by cytokines. Malnutrition and inflammation thus keep in check TTR and RBP4 secretion by using distinct and unrelated physiologic pathways, but they operate in concert to downregulate LBM stores. The biomarker complex integrates these opposite mechanisms at any time and thereby constitutes an ideally suited tool to determine residual LBM resources still available for metabolic responses, hence predicting outcomes of the most interwoven disease conditions.

A systematized interdisciplinary nutritional care plan results in improved clinical outcomes

OBJECTIVE

This study investigated identification and treatment of patients at-risk for malnutrition and extended inpatient length of stay.

DESIGN

Data were collected retrospectively from the medical records for a period of 6 months. The records were reviewed for (1) adherence to RD recommendation, (2) decreasing serum albumin during hospital stay, (3) length of hospital stay, (4) readmission within 30 days, (5) age, (6) gender, (7) past medical history, (8) primary and secondary diagnoses, (9) the presence or absence of a diet order and (10) medications.

SUBJECTS AND PARTICIPANTS

Medical records were reviewed for diagnoses associated with nutrition-related complications. Patient's records were excluded for length of stay less than 4 days, or in-hospital death.

RESULTS

The mean LOS was 10 days shorter when the advice was followed (p=0.0074).

CONCLUSIONS

Patients at high nutritional risk have a shorter LOS and have fewer complications when the RD advice is followed.