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Observational Study of Blood Pressure Measurements and Continuous Dialysis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01286506
Recruitment Status : Terminated
First Posted : January 31, 2011
Last Update Posted : August 31, 2016
Information provided by (Responsible Party):
University of Chicago

Brief Summary:

Dialysis is used to control the fluid balance and metabolic state of patients with kidney disease. Control of the metabolic state, via electrolytes, can be monitored using labs that are routinely drawn from patients undergoing continuous hemodialysis. Control of fluid removal is much more difficult. This study aims to determine whether changes in the blood pressure associated with breathing correlate with or predict intolerance to fluid responsiveness with continuous dialysis.

We hypothesize that a measurement of changes in blood pressure with breathing called arterial pulse pressure variation may be able to predict the ability to remove fluid during continuous renal replacement therapy.

Condition or disease
Kidney Failure Respiratory Failure Critical Illness Shock

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Study Type : Observational
Actual Enrollment : 7 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Observational Study Evaluating the Hemodynamic Relationship Between Volume Removal and Pulse Pressure Variation During Renal Replacement Therapy
Study Start Date : February 2011
Actual Primary Completion Date : December 2015
Actual Study Completion Date : December 2015

Mechanically ventilated patients
Non-mechanically ventilated patients

Primary Outcome Measures :
  1. Predictive value of pulse pressure variation for tolerance of fluid removal on CVVHD [ Time Frame: Iterative 24 hr periods for the duration of CRRT ]

Secondary Outcome Measures :
  1. Increased doses of vasoactive agents on CRRT [ Time Frame: Iterative 24 hr periods for the duration of CRRT ]
  2. Inability to meet goal ultrafiltration rate [ Time Frame: Iterative 24 hr periods for the duration of CRRT ]
  3. Hypotensive events on CRRT [ Time Frame: Iterative 24 hr periods for the duration of CRRT ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Adult ICU patients requiring CVVHD who have an indwelling arterial line.

Inclusion Criteria:

  • age > 17 years old
  • CVVHD renal replacement therapy
  • indwelling arterial line

Exclusion Criteria:

  • age < 18 years old
  • pregnancy
  • temperature < 34°C
  • severe mechanical ventilator dyssynchrony
  • cardiac arrhythmias precluding automated PPV measurement by ICU monitors
  • non-pulsatile cardiac flow
  • open thoracic cavity

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01286506

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United States, Illinois
The University of Chicago Medical Center
Chicago, Illinois, United States, 60637
Sponsors and Collaborators
University of Chicago
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Principal Investigator: Michael O'Connor, MD University of Chicago
Principal Investigator: Jay L Koyner, MD University of Chicago
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Responsible Party: University of Chicago Identifier: NCT01286506    
Obsolete Identifiers: NCT01153087
Other Study ID Numbers: 16710A
First Posted: January 31, 2011    Key Record Dates
Last Update Posted: August 31, 2016
Last Verified: August 2016
Keywords provided by University of Chicago:
Pulse pressure variation
Continuous venovenous hemodialysis
Volume status
Critical care
Additional relevant MeSH terms:
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Respiratory Insufficiency
Renal Insufficiency
Critical Illness
Respiration Disorders
Respiratory Tract Diseases
Disease Attributes
Pathologic Processes
Kidney Diseases
Urologic Diseases