- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT00672516
Management of Bleeding Following Cardiopulmonary Bypass
Management of Excessive Bleeding Following Cardiopulmonary Bypass: A Pilot Feasibility Study
We believe ongoing bleeding during complex cardiac surgery can be accurately measured and that administration of a specific blood product replacement strategy designed to optimally slow or stop the bleeding can be followed by the during the operation.
Patients at risk of significant bleeding after complex cardiac surgery will be approached to allow their operation to be watched by study personnel to see if ongoing blood loss can be accurately measured and to see how quickly a prescribed, standardized blood product replacement protocol to control the bleeding does slow or stop the bleeding. Permission to review the medical record to see if bleeding risk features can be identified and permission to follow the patient after surgery to see how they recover is also requested.
Studienübersicht
Status
Bedingungen
Studientyp
Einschreibung (Tatsächlich)
Kontakte und Standorte
Studienorte
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Texas
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Dallas, Texas, Vereinigte Staaten, 75390-8894
- University of Texas Southwestern Medical Center
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria:
Eligible male and female patients will include those who are over 18 kg (identified as the lower inclusion threshold so as to standardize CPB circuit dilution) and less than 75 years old (to limit excessive stroke risk) and at theoretically increased risk for excessive bleeding following cardiopulmonary bypass, including patients:
- undergoing repeat sternotomy, or
- undergoing combined procedures (i.e. - valve and coronary artery surgery), or
- undergoing multiple valve surgery, or
- undergoing aortic root replacement with/without deep hypothermic circulatory arrest, or
- undergoing complex congenital cardiac surgery
Exclusion Criteria:
Ineligible patients include those:
- with known coagulation factor deficiency, or
- refusing to receive donor blood products if necessary, or
- undergoing emergency surgery, or
- undergoing their first coronary artery bypass surgery or their first valve repair/replacement, or
- with history of previous stroke or other significant thromboembolic event within 6 months (such as pulmonary embolism, valve obstruction [if not replacing this valve in upcoming operation], renal vein thrombosis, acute MI, DVT ), or
- with known thrombophilia, or
- with active infection (bacteremia, sepsis, endocarditis, meningitis, urinary tract infection, cholecystitis, cellulitis, pneumonia)
- pregnant, or
- weight > 150 kg or < 18 kg
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
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Tabulate the number of high risk subjects that must be screened and consented in order to find twenty subjects that meet the criteria of excessive bleeding following conventional therapy
Zeitfenster: end of trial
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end of trial
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Determine blood loss, bleeding rate and blood transfusion prior to and following completion of algorithm-guided conventional transfusion therapy,including measured loss, rate of loss, volume of transfusion
Zeitfenster: During and immediately following completion of bypass OR in the first 24 hours after admission to the IUC, if significant bleeding occurs
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During and immediately following completion of bypass OR in the first 24 hours after admission to the IUC, if significant bleeding occurs
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Assess the relative accuracy and clinical relevance of measuring bleeding rate, blood loss and blood transfusion in the first 24 hours following designation of "excessive bleeding", including measured hourly outputs, rate of output and volume transfused
Zeitfenster: First 24 hours after operation
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First 24 hours after operation
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Assess the level of compliance to the Bleeding Management Algorithm
Zeitfenster: Immediate peri-operative period
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Immediate peri-operative period
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
|---|---|
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Tabulating adverse outcomes, including: 1) rate of re-exploration within the next 24 hours, 2) use of rescue therapeutics in accordance with local practice, and 3) mortality within 30 days
Zeitfenster: First 30 days post-operatively or until discharge, whichever comes first
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First 30 days post-operatively or until discharge, whichever comes first
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Recording serious adverse events, such as myocardial infarction, thrombo-embolic events, etc.
Zeitfenster: First 30 days post-operatively or discharge, whichever occurs first
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First 30 days post-operatively or discharge, whichever occurs first
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Mitarbeiter und Ermittler
Sponsor
Mitarbeiter
Ermittler
- Studienstuhl: Marie E Steiner, MD, MS, University of Minnesota
- Hauptermittler: Philip Greilich, MD, University of Texas Souwthwestern Medical Center
- Hauptermittler: Nauder Faraday, MD, Johns Hopkins Medical Center
- Hauptermittler: Nigel S Key, MB, FRCP, University of North Carolina, Chapel Hill
- Hauptermittler: Jerrold Levy, MD, Emory University
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Steiner ME, Despotis GJ. Transfusion algorithms and how they apply to blood conservation: the high-risk cardiac surgical patient. Hematol Oncol Clin North Am. 2007 Feb;21(1):177-84. doi: 10.1016/j.hoc.2006.11.009.
- Levy JH, Tanaka KA, Steiner ME. Evaluation and management of bleeding during cardiac surgery. Curr Hematol Rep. 2005 Sep;4(5):368-72.
- Avidan MS, Alcock EL, Da Fonseca J, Ponte J, Desai JB, Despotis GJ, Hunt BJ. Comparison of structured use of routine laboratory tests or near-patient assessment with clinical judgement in the management of bleeding after cardiac surgery. Br J Anaesth. 2004 Feb;92(2):178-86. doi: 10.1093/bja/aeh037.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- 0604M85353
- 20100962-A1
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