AI Article Synopsis
- Hypophosphatemia is frequently observed in critically ill patients admitted to Intensive Care Units (ICUs), with a study examining its prevalence and outcomes in Queensland, Australia between 2015 and 2021.
- Out of 89,776 patients, 68,699 were included, and 34.2% experienced hypophosphatemia, typically identified on the second day of ICU stay and resolved within three days.
- The severity of hypophosphatemia correlated with increased 90-day mortality rates, with moderate and severe cases showing significantly higher fatality risks compared to those without hypophosphatemia.
Article Abstract
Introduction: Hypophosphatemia is common in critically ill patients. We have described the epidemiology of hypophosphatemia in patients admitted to the Intensive Care Units.
Methods: A multicentre, retrospective cohort study of 12 ICUs in Queensland, Australia from January 1st, 2015, to December 31st, 2021. Exclusions included readmissions, renal replacement therapy, end-stage renal disease, and palliative intent admissions and transfers from other ICUs. Patients were classified into four groups based on the severity of the first episode of low serum phosphate (PO): "None" (PO4: ≥0.81 mmol/L, "Mild" (PO4: ≥0.50 & <0.81 mmol/L) "Moderate" (PO4: ≥0.30 & <0.50 mmol/L) and "Severe" (PO4: <0.30 mmol/L). A mixed-effect logistic regression model, including hospital as a random effect, was developed to examine factors associated with 90-day case fatality.
Results: Of the 89,776 patients admitted, 68,699 patients were included in this study, with 23,485 (34.2%) having hypophosphatemia with onset mostly on Day 2 of ICU admission and correcting to normal 3 days after hypophosphatemia was identified. There was substantial variation among participating ICUs in phosphate replacement; the threshold, and the route by which it was replaced. Day-90 case fatality increased with severity of hypophosphatemia (None: 3974 (8.8%), Mild: 2306 (11%), Moderate: 377 (14%); Severe: 108 (21%) (p < 0.001)). Multivariable regression analysis showed that compared to those without hypophosphatemia, patients with moderate (odds ratio (OR) 1.24; 95% confidence intervals (CI) 1.07-1.44; p = 0.004) or severe (OR 1.49; 95% CI 1.13-1.97; p = 0.005) hypophosphatemia had increased risk of 90-day case fatality.
Conclusion: Hypophosphatemia was common, and mostly occurred on day 2 with early correction of serum phosphate. Phosphate replacement practices were variable among ICUs. Moderate and severe hypophosphatemia was associated with increased 90-day case fatality.
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| http://dx.doi.org/10.1016/j.accpm.2024.101410 | DOI Listing |
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