In critically ill adult patients with COVID-19, lower energy and higher protein intake are associated with fewer mechanical ventilation and antibiotic days but not with ICU length of stay.

Abstract

Coronavirus disease 2019 (COVID-19) nutrition management guidelines recommend hypocaloric, high-protein feeding in the acute phase of critical illness. This study aimed to determine, among critically ill adults with COVID-19, whether nutrition support affects outcomes in nonobese patients when providing a mean energy intake of ≥20 kcal/kg/day vs <20 kcal/kg/day and protein intake of ≥1.2 g/kg/day vs <1.2 g/kg/day, using actual body weight, and in patients with obesity when providing ≥20 kcal/kg/day vs <20 kcal/kg/day and a protein intake of ≥2 g/kg/day vs <2 g/kg/day using ideal body weight. This retrospective study included adults with COVID-19 on mechanical ventilation (MV) admitted to the intensive care unit (ICU) from 2020 to 2021. Clinical and nutrition parameters were recorded the first 14 days of ICU stay. One hundred four patients were included: 79 (75.96%) were male and had a median age of 51 years and body mass index of 29.65 kg/m2 . ICU length of stay (LOS) was not affected by nutrition intake, but patients receiving <20 kcal/kg/day had fewer MV days (P = 0.029). In a subgroup analysis, MV days were lower in the nonobese group receiving <20 kcal/kg/day (P = 0.012). In the obese group, those receiving higher protein intake had fewer antibiotic days (P = 0.013). In critically ill patients with COVID-19, lower energy and higher protein intake were respectively associated with fewer MV days and, in patients with obesity, fewer antibiotic days, but they had no effect on ICU LOS.