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Sponsors and Collaborators: |
Hospital de Base Fundação de Amparo à Pesquisa do Estado de São Paulo |
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Information provided by: | Hospital de Base |
ClinicalTrials.gov Identifier: | NCT00594919 |
The following objectives were used for comparison: 1)primary objective: Evaluate the urinary excretion of NGAL as a marker of early development of acute kidney injury in patients undergoing cardiac surgery.
Condition |
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Early Acute Kidney Injury |
Study Type: | Observational |
Study Design: | Prospective |
Official Title: | Neutrophil Gelatinase-Associated Lipocalin(NGAL): Early Biomarker of Acute Kidney Injury After Cardiac Surgery |
Estimated Enrollment: | 150 |
Study Start Date: | October 2007 |
Groups/Cohorts |
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AKI group
Acute kidney injury group after cardiac surgery.
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NKF group
Normal kidney function group after cardiac surgery
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All patients aged greater than 18 years undergoing elective cardiac surgery for coronary artery bypass grafting and / or valve replacement, in need of cardiopulmonary bypass and with the prospect of minimum hospital length stay of 48 hours in ICU, will be candidates for participation in this study.
Criteria for exclusion Patients with IRA before hospitalization in the ICU; Patients with estimated glomerular filtration (MDRD formula simplified) less than 30 ml / min; Patients transplanted kidney; Patients with chronic renal failure on dialysis; Patients anuric the admission in the ICU; Refusal to participate in the study.
Definition of IRA:
IRA will be defined according to the new proposal of AKIN (Acute Kidney Injury Network) (awaiting publication): abrupt elevation (48 hours) of serum creatinine in value greater than or equal to 0.3 mg / dL or an increase of 50% compared to baseline or reduction of urinary volume to 0.5 ml / kg / h for more than 6 hours (Annex 1).
Laboratory Investigations Samples of urine will be collected before surgery, after 2, 4, 6, 12, 24, 48, 72 and 96 hours after the end of the CEC for determination of creatinine and urinary NGAL (normalization of NGAL for excretion urinary creatinine).
The serum creatinine is measured before surgery and daily during the first 4 days after surgery for the diagnosis of IRA. If the time of CEC exceed 2 hours, the first sample of urine after the end of the CEC will be considered as "sample 2 hours".
Quantification of NGAL Samples of urine will be centrifuged (5 min at 2000 rpm) and frozen at -20 ° C for later determination of NGAL by method of ELISA (Kit commercial AntybodyShop, Denmark).
Ages Eligible for Study: | 18 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
All patients aged greater than 18 years undergoing elective cardiac surgery for coronary artery bypass grafting and / or valve replacement, in need of cardiopulmonary bypass and with the prospect of minimum hospital length stay of 48 hours in ICU, will be candidates for participation in this study.
Inclusion Criteria:
Exclusion Criteria:
Definition of IRA:
IRA will be defined according to the new proposal of AKIN (Acute Kidney Injury Network) (awaiting publication): abrupt elevation (48 hours) of serum creatinine in value greater than or equal to 0.3 mg / dL or an increase of 50% compared to baseline or reduction of urinary volume to 0.5 ml / kg / h for more than 6 hours
Contact: Rafael C Miranda, Physician | 55 - 17 32015054 | rafacmiranda@gmail.com |
Contact: Maurício N Machado, Physician | 55 - 17 32164025 | maunmac@gmail.com |
Brazil, São Paulo | |
Hospital de Base - São José do Rio preto Medical School | Recruiting |
São José do Rio Preto, São Paulo, Brazil, 15090000 | |
Contact: Maurício N Machado, Physician 55 17 32164025 maunmac@gmail.com | |
Principal Investigator: Rafael C Miranda, Physician |
Study Director: | Emerson quintino | Faculdade de Medicina de São José do Rio preto - Hospital de Base |
Responsible Party: | FAPESP ( Fundação de Amparo à Pesquisa do Estado de São Paulo ) |
Study ID Numbers: | CAAE 0246.0.000.140-07, 1411 - 2007. |
Study First Received: | January 7, 2008 |
Last Updated: | January 15, 2008 |
ClinicalTrials.gov Identifier: | NCT00594919 |
Health Authority: | Brazil: National Committee of Ethics in Research |
acute kidney injury ngal cardiac surgery |
Euroscore SOFA ATN-ISS |