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Observational Study of Blood Pressure Measurements and Continuous Dialysis

This study has been terminated.
Information provided by (Responsible Party):
University of Chicago Identifier:
First received: January 27, 2011
Last updated: August 29, 2016
Last verified: August 2016

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.

Kidney Failure Respiratory Failure Critical Illness Shock

Study Type: Observational
Study Design: 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

Further study details as provided by University of Chicago:

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

Enrollment: 7
Study Start Date: February 2011
Study Completion Date: December 2015
Primary Completion Date: December 2015 (Final data collection date for primary outcome measure)
Mechanically ventilated patients
Non-mechanically ventilated patients


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01286506

United States, Illinois
The University of Chicago Medical Center
Chicago, Illinois, United States, 60637
Sponsors and Collaborators
University of Chicago
Principal Investigator: Michael O'Connor, MD University of Chicago
Principal Investigator: Jay L Koyner, MD University of Chicago
  More Information

Responsible Party: University of Chicago Identifier: NCT01286506     History of Changes
Obsolete Identifiers: NCT01153087
Other Study ID Numbers: 16710A
Study First Received: January 27, 2011
Last Updated: August 29, 2016

Keywords provided by University of Chicago:
Pulse pressure variation
Continuous venovenous hemodialysis
Volume status
Critical care

Additional relevant MeSH terms:
Respiratory Insufficiency
Critical Illness
Renal Insufficiency
Respiration Disorders
Respiratory Tract Diseases
Disease Attributes
Pathologic Processes
Kidney Diseases
Urologic Diseases processed this record on August 21, 2017