Preoperative urine-specific gravity and the incidence of complications after hip fracture surgery: A prospective, observational study
2014 (English)In: European Journal of Anaesthesiology, ISSN 0265-0215, E-ISSN 1365-2346, Vol. 31, no 2, 85-90 p.Article in journal (Refereed) Published
BACKGROUND: Mild to moderately severe dehydration is common in the elderly, but its relationship to surgical outcome is unclear.
OBJECTIVES: To study the incidence of dehydration prior to hip fracture surgery and its relationship to postoperative complications.
DESIGN: Prospective observational study.
SETTING: Operation department and orthopaedic ward at a regional hospital.
PATIENTS: Forty-five patients [median (interquartile range) age 78 (75 to 86) years] undergoing acute hip fracture surgery.
INTERVENTIONS: A urine sample was taken on admission to the operating theatre. Complications were assessed 2 days postoperatively using a check-list.
MAIN OUTCOME MEASURES: Dehydration was considered to be present if the urinary specific gravity was 1.020 or higher, indicating renal water conservation. The number and type of postoperative complications were recorded.
RESULTS: Dehydration was present in one third of the patients. Sixty percent of these patients had at least one postoperative complication, whereas the corresponding proportion was 30% in the euhydrated patients (P <0.01). Only one patient (3%) had more than one complication in the euhydrated group compared with six patients (40%) in the dehydrated group (P <0.01). Euhydrated patients had a mean of 0.3 postoperative complications per surgery, whereas dehydrated patients scored 1.1 complications (P <0.015). The higher incidence included confusion, arterial desaturation and cardiovascular events.
CONCLUSION: Dehydration before surgery nearly quadrupled the number of postoperative complications after hip fracture repair.
Place, publisher, year, edition, pages
Lippincott Williams & Wilkins, 2014. Vol. 31, no 2, 85-90 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-102527DOI: 10.1097/01.EJA.0000435057.72303.0eISI: 000329191400004PubMedID: 24145802OAI: oai:DiVA.org:liu-102527DiVA: diva2:678818