Abstract Disclosure: S. Karki: None. B. Neupane: None. S. Neupane: None. A. Bhandari: None. U. Farooq: None. K. Rajamani: None. Introduction: Hypothyroidism poses a significant public health burden in the United States, affecting approximately 4.6 % of the population. Various nutritional deficiencies can adversely affect thyroid function, potentially leading to thyroid disorders. Despite this, there is limited literature exploring the influence of Protein Energy Malnutrition (PEM) on outcomes in hypothyroidism. Objective of our study:This investigation aims to assess the impact of PEM on the healthcare burden and costs associated with hospitalizations in patients with and without hypothyroidism. Methods: A retrospective study was conducted using the National Inpatient Sample (NIS) data from 2017 to 2020. Among the 14,418,310 patients aged 18 and above with a primary diagnosis of hypothyroidism, two groups were formed based on the presence or absence of PEM, determined by International Classification of Diseases (ICD-10) codes. Statistical analysis was performed using STATA, employing the student’s t-test and Fischer’s exact test for continuous variables and proportions, respectively. Adjusted odds ratio was calculated through multivariate regression analysis. The primary outcome was mortality, with secondary outcomes encompassing mean length of stay (LOS), total cost, and various medical complications. Trends in mortality, LOS and total cost were compared for both groups. Results: Out of 14,418,310 hypothyroid patients, 7.06% (1,1018,310) were diagnosed with PEM. Patients with PEM exhibited higher mortality (6.80 % vs. 2.39 %, p<0.001), extended mean length of hospital stay (8.88 days vs. 4.85 days, p<0.001), and higher increased total hospitalization costs ($96,443 vs. $58,262, p<0.001). Furthermore, patients with PEM had elevated rates of various complications, including acute coronary syndrome, septic shock, pulmonary edema, mechanical ventilation, acute respiratory failure, acute respiratory distress syndrome, acute kidney injury, and cerebrovascular accident. Increasing trends in mortality, length of stay, and total cost of hospitalization were observed in hypothyroid patients with PEM. A similar upward trend was noted in hypothyroid patients without PEM. Conclusion: Our study underscores that the presence of PEM in hypothyroid patients substantially increases the healthcare burden, which is reflected in elevated mortality rates, prolonged hospital stays, higher total costs, and a range of adverse outcomes. Screening of PEM in hypothyroid patients is recommended, and early nutritional interventions, possibly involving dieticians, may mitigate these adverse effects. Further research is warranted to explore the association between PEM and hypothyroidism, as well as strategies for early identification and intervention. Presentation: 6/1/2024
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