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Insertion of a urinary catheter on admission lowers acute kidney injury incidence in patients with hip fractures.
International Orthopaedics 2023 March 9
PURPOSE: Acute kidney injury (AKI) is a common adverse event in patients undergoing hip fracture repair surgery, increasing morbidity and mortality. Our study hypothesis was that routine insertion of a urinary catheter, on admission to the hospital or immediately before surgery, will reduce AKI incidence in hip fracture patients.
METHODS: Determined by alternating days of admission, a urinary catheter was inserted routinely on admission (catheter group) or as needed (non-catheter group) in 250 consecutive patients who presented with a hip fracture to our emergency department. The incidence of AKI according to the KDIGO criteria and morbidity and mortality were compared between the study groups.
RESULTS: The overall incidence of AKI was 11.6% (29/250). The catheter group (N = 122) had a significantly lower rate of AKI (6.6% vs. 16% p = 0.018). At 12-month follow-up, the overall mortality was 10.8% (27/250), in-hospital 7.4% (2/27), short-term (within 30 days) 7.4% (2/27), and long-term (30 days to 1 year) 85.8% (23/27). All in-hospital mortality occurred in the AKI group. Patients with no AKI had a better survival rate; however, the difference was not significant (p-value = 0.21). Mortality rate was lower in the catheter group but not significant (8.2% compared with 13.8% in the non-catheter group, p = 0.225). Post-operative respiratory and cardiac complications were more frequent in the AKI group (p = 0.02 and 0.043 accordingly).
CONCLUSIONS: Insertion of a urinary catheter upon admission or before surgery lowered AKI incidence significantly. Peri-operative AKI was associated with higher rates of post-operative complications and worse survival.
METHODS: Determined by alternating days of admission, a urinary catheter was inserted routinely on admission (catheter group) or as needed (non-catheter group) in 250 consecutive patients who presented with a hip fracture to our emergency department. The incidence of AKI according to the KDIGO criteria and morbidity and mortality were compared between the study groups.
RESULTS: The overall incidence of AKI was 11.6% (29/250). The catheter group (N = 122) had a significantly lower rate of AKI (6.6% vs. 16% p = 0.018). At 12-month follow-up, the overall mortality was 10.8% (27/250), in-hospital 7.4% (2/27), short-term (within 30 days) 7.4% (2/27), and long-term (30 days to 1 year) 85.8% (23/27). All in-hospital mortality occurred in the AKI group. Patients with no AKI had a better survival rate; however, the difference was not significant (p-value = 0.21). Mortality rate was lower in the catheter group but not significant (8.2% compared with 13.8% in the non-catheter group, p = 0.225). Post-operative respiratory and cardiac complications were more frequent in the AKI group (p = 0.02 and 0.043 accordingly).
CONCLUSIONS: Insertion of a urinary catheter upon admission or before surgery lowered AKI incidence significantly. Peri-operative AKI was associated with higher rates of post-operative complications and worse survival.
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