Abstract
The relationship between in-hospital stroke-related medical complications and clinical outcome remains unclear. We examined whether medical complications were associated with length of stay (LOS) and mortality among stroke unit patients. Using population-based Danish medical registries, we performed a follow-up study among all patients with acute stroke admitted to stroke units in 2 counties between 2003 and 2009 (n=13 721). Data regarding in-hospital medical complications, including pneumonia, urinary tract infection, pressure ulcer, falls, deep venous thrombosis, pulmonary embolism, and severe constipation together with LOS and mortality were prospectively registered. Overall, 25.2% of patients (n=3453) experienced 1 or more medical complications during hospitalization. The most common complications were urinary tract infection (15.4%), pneumonia (9.0%), and constipation (6.8%). Median LOS was 13 days (25th and 75th quartiles, 5 and 33). All medical complications were associated with longer LOS. The adjusted relative LOS extension ranged from 1.80 (95% CI, 1.54-2.11) for pneumonia to 3.06 (95% CI, 2.67-3.52) for falls. Patients with 1 or more complications had an increased 1-year mortality rate (adjusted mortality rate ratio [MRR], 1.20; 95% CI, 1.04-1.39). The association was mainly because of pneumonia, which was associated with higher mortality both after 30 days (adjusted MRR, 1.59; 95% CI, 1.31-1.93) and 1 year (adjusted MRR, 1.76; 95% CI, 1.45-2.14). In-hospital medical complications were associated with longer LOS and some, in particular pneumonia, also with an increased mortality among patients with acute stroke.
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