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Status unknownNCT03632538AKI-CDSUpdated Apr 7, 2020

AKI Cardiosurgery Diagnostic Study (AKI-CDS)

An observational study in Acute Kidney Injury and Renal Replacement Therapy, sponsored by University of Rostock. Status unknown at 1 site in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-04-07.

Sponsored by University of Rostock · Observational

The sponsor has not verified this record recently (last verified Apr 2020), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
40
Ages
18 Years and older
Sex
All
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Study summary

Acute kidney injury (AKI) is a common and major complication of cardiac surgery. The aim of this study is to evaluate the use of a fragment of proencephalin in plasma and other biomarkers as specific markers for early diagnosis of AKI and the need of renal replacement therapy after cardiac surgery.

Read the detailed description

Acute kidney injury (AKI) is an abrupt loss of kidney function and occurs in up to 5-40% of patients who undergo cardiac surgery; dialysis being required in approximately 2-15% of all patients. AKI is a common problem in critically ill patients and is independently from underlying diseases associated with increased morbidity and mortality (to progressive loss of kidney function, cardiovascular disease, and death). Unfortunately, chronic kidney disease is often overlooked in its earliest, most treatable stages. Implementation of novel biomarkers into the clinical practice that reliably identify patients at risk or at an early stage of AKI could offer more efficient management strategies may lead to better outcomes in critically ill patients.

Kidney disease usually progresses silently, often destroying most of the kidney function before causing any symptoms. AKI was defined using the Kidney Disease Improvement Global Outcome (KDIGO) definition. The standard key tests (increase of serum creatinine and urine output) are late parameters after significant kidney injury.

In this study 20 female and 20 male adult patients before and after cardiac surgery should be included. From all patients basic demographic data, pre-morbidity, vital parameters, blood parameters, urine output, Illness severity scores (APACHE-II, SOFA, GCS), drug levels, microbiological results will be recorded. The aim of this study is to evaluate the use of a fragment of proencephalin in plasma "penKID", Spingotec GmbH, Berlin, Germany) and other biomarkers (ADM: adrenomedulin, CAAP: C-terminal alpha-1 antitrypsin peptide) as specific markers for early diagnosis of AKI and the need of renal replacement therapy. Bio-ADM is a water-soluble peptide hormone with a molecular weight of about 6kDa released mainly by endothelial cells. Its biological function is the control of vasodilation, an important regulator of blood pressure and organ perfusion. This biomarker predicts and diagnoses endothelial dysfunctions. C-terminal alpha-1 antitrypsin peptide (CAAP) is a novel sepsis and renal injury biomarker with immunomodulatory function, especially in human neutrophils, which supports its role in the host response and pathophysiology of sepsis.

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Conditions studied

  • Acute Kidney Injury
  • Renal Replacement Therapy

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Keywords

  • Acute Kidney Injury
  • Cardiac Surgery
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In context

Acute Kidney Injury

1,595 studies on the registry are indexed under Acute Kidney Injury; 371 are open to participants now.

This study's planned enrollment of 40 is below the median of 150 across 773 observational studies indexed under Acute Kidney Injury.

Browse Acute Kidney Injury studies →

Lead sponsor

University of Rostock is the lead sponsor of 46 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Sampling method
Probability sample

Study population

All patients undergoing cardiac surgery and fulfilling the inclusion criteria should be screened for the study at the university hospital of Rostock, Germany at one of the two different intensive care units PIT 1 and 2 at the Department of Anaesthesiology and Intensive Care or at the Department of Cardiac Surgery.

Inclusion criteria

  • Female or male, at least 18 years old
  • Ability to consent to the study by patient or legal representative
  • Cardiac surgery with use of extracorporeal circulation (ECC)
  • Bypass (> 2; ACB) or bypass + heart valve surgery
  • Two or three heart-valve operation

Exclusion criteria

Exclusion Criteria:

  • Dialysis-dependent patients with chronic, end-stage renal failure
  • Pre-existing renal replacement therapy
  • Infused prognosis (expected death in ≤ 12 hours despite maximal therapy)
  • Inability to consent of participation in the research project, of the patient or of the patients representative
  • Aortic surgery
  • Endocarditis
  • (Only) partial sternotomy (eg. aortic valve surgery)
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Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
40 participants (estimated)
Patient registry
No
Biospecimen retention
Samples without dna

Groups and cohorts

  • Male

    20 male adult patients after cardiac surgery. Drawing of patients blood for measurement of biomarkers ("penKid", adrenomedulin, C-terminal alpha-1 antitrypsin peptide) for AKI before and after cardiac surgery (times: 0, 6, 24, 72, 168 hours).

    Diagnostic Test: Biomarker ("penKid", adrenomedulin, C-terminal alpha-1 antitrypsin peptide)

  • Female

    20 female adult patients after cardiac surgery. Drawing of patients blood for measurement of biomarkers ("penKid", adrenomedulin, C-terminal alpha-1 antitrypsin peptide) for AKI before and after cardiac surgery (times: 0, 6, 24, 72, 168 hours).

    Diagnostic Test: Biomarker ("penKid", adrenomedulin, C-terminal alpha-1 antitrypsin peptide)

Interventions

  • Diagnostic testBiomarker ("penKid", adrenomedulin, C-terminal alpha-1 antitrypsin peptide)

    Drawing of patients blood for measurement of biomarkers for AKI before and after cardiac surgery (times: 0, 6, 24, 72, 168 hours).

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What researchers measure

Primary outcomes

  1. AKI 0 h

    Diagnosis and severity of acute kidney injury following the KDIGO-criteria

    Time frame: after operation (surgery): 0 hours

  2. AKI 6 h

    Diagnosis and severity of acute kidney injury following the KDIGO-criteria

    Time frame: after operation (surgery): 6 hours

Secondary outcomes

  1. SOFA

    SOFA-Score

    Time frame: before operation, after operation (times: 0, 6, 24, 72 and 168 hours

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Study locations

1 of 1 sites recruiting
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 7, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03632538
Lead sponsor
University of Rostock
Responsible party
Dr. Martin Sauer, MD (Principal Investigator, PD Dr. med. habil., University of Rostock) — Principal investigator
First posted
Aug 15, 2018
Start date
Jul 27, 2018
Primary completion
Jul 2021 (estimated)
Completion
Oct 2021 (estimated)
Last update
Apr 7, 2020

Study contacts

Martin Sauer, MD
Contact
martin.sauer@uni-rostock.de
+493814946409
Sandra Doß
Contact
sandra.doss@med.uni-rostock.de
+493814942640
Martin Sauer, MD
principal investigator · University Hospital of Rostock, Germany

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Apr 2020. You cannot join it, but the record below documents what was studied.

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