An observational study in Hip Fractures and Acute Kidney Injury, sponsored by Medical University of Warsaw. Status unknown at 2 sites in Poland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-04-05.
Sponsored by Medical University of Warsaw · Observational
Surgical treatment of hip fracture may be complicated by acute kidney injury. The aim of this study is to investigate whether the investigators can find a better biomarker than creatinine to recognize this problem at an earlier stage.
Extensive orthopedic surgical procedures may have many postoperative complications. One of those, sometimes overlooked, is acute kidney injury. Classically defined by KDIGO criteria as an increase in creatinine concentration, may go by unnoticed due to a late peak in serum concentration of this marker. There is still need for "nephrological troponin" which could easily and with a low margin of doubt identify acute kidney injury.
The investigators have planned a double-center study, in cooperation with the 'Department of Anesthesiology and Intensive Therapy with the Postoperative Subdivision' of the 'Samodzielny Publiczny Szpital Kliniczny im. prof. Adama Grucy CMKP' in Otwock, concentrating on measuring concentration of biomarkers known to indicate acute kidney injury in different situations: Proenkephalin (PENK), Dickkopf-3 (DKK3), circular RNA (circRNA), Liver-type Fatty Acid-binding Protein (L-FABP), Netrin-1, semaphorin 3a, Tissue Inhibitor of Matrix Metalloproteinase-2 (TIMP-2), Insulin-like Growth Factor-binding Protein 7 (IGFBP-7), Retinol-binding Protein-4 (RBP-4) aiming to find a marker, or group of markers that would allow recognition of renal injury at an early stage to help minimize the effect.
Patients aged at least 18 years, with a hip fracture undergoing, either hip alloplasty, or internal fixation, after providing informed consent, will be included. Patients with end stage renal disease will be excluded. Blood and urine samples will be collected at 5 points of time: 1 - after admission to the operating ward, 2 - following surgery, before leaving the operating ward, 3 - on the 1st postoperative day, 4 - on the 2nd postoperative day, 5 - on the 5th postoperative day, or the day the patient leaves hospital, whichever is first. Additionally patients who will be able to cooperate will have a renal resistive index measured using ultrasonography.
Blood collected from patients, not longer than 8 hours after collection will be tested for PENK concentration (Spingotec GmbH, Berlin, Germany), then plasma obtained from this sample after centrifuging will be frozen together with centrifugated samples of urine in -80 degrees Celsius till analysis.
Additionally, if the concentration of PENK is elevated, the same sample will be tested after 8, 12 and 24 hours of staying at room temperature, to define stability of the test from blood sampling till measurement.
30 days after surgery, an attempt to contact the patient or his/her family is going to be made, to check if the patient has developed need for renal replacement therapy or has required hospitalisation due to kidney dysfunction together with a 30 day mortality evaluation.
1,595 studies on the registry are indexed under Acute Kidney Injury; 370 are open to participants now.
This study's planned enrollment of 200 is above the median of 151 across 772 observational studies indexed under Acute Kidney Injury.
Browse Acute Kidney Injury studies →Medical University of Warsaw is the lead sponsor of 316 studies on the registry; 87 are open to participants now.
Counted across the registry records on this site, refreshed daily.
all patients able to provide informed consent, who do not have diagnosed end stage renal disease undergoing surgical treatment of hip fracture (either joint alloplasty or internal fixation)
Exclusion Criteria:
blood and urine sampling before and after surgery (1-admission to operating ward, 2-leaving operation ward, 1st day postop, 2nd day postop, 5th day postop, or the day patient leaves hospital, whichever is first)
patients able to cooperate will have renal resistive index measured before and after surgery (admission to operating ward, leaving operating ward)
Any stage of acute kidney injury as defined by Kidney Diseases Improving Global Outcome
Concentration of novel biomarkers, its change and change of renal resistive index considering different stages of acute kidney injury
Time frame: 120 hours
Kidney perfusion evaluated by Renal Resistive Index (RRI)
Correlation between RRI and concentration of biomarkers
Time frame: 48 hours
Analysis of proenkephalin concentration
Change of proenkephalin concentration in the blood sample left at room temperature
Time frame: 24 hours
Kidney dysfunction and mortality
Evaluation of 30-day need for renal replacement therapy, hospitalization due to kidney failure and/or mortality
Time frame: 30 days
This study is status unknown, as verified in Apr 2022. You cannot join it, but the record below documents what was studied.
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Medical University of Warsaw