Predicting Hypotension During Dialysis in the ICU

Withdrawn before enrolling

Conditions studied: Peridialytic Hypotension

In brief

Currently, decisions regarding volume management for dialysis sessions in the ICU are made in large part on the nephrologists'/intensivists' overall gestalt. This gestalt is based upon a combination of commonly used measures of circulatory function, the physical exam, fluid balance, estimates of dialysis dry weight, and monitoring changes in relative blood volume status using devices such as the Crit-Line™ III, and central venous pressures. However, these tools perform poorly in predicting the circulatory system's overall response to dialysis. Consequently, episodes of dangerously low blood pressure are still frequently encountered. Better techniques to predict the circulatory system's response to dialysis are much needed. The intent of this study is to test newer metrics of circulatory system function for their ability to predict low blood pressure episodes during dialysis. This is important because it may enable the design of newer treatment strategies created to prevent low blood pressure episodes during dialysis and improve patient outcomes. The investigators overall hypothesis is that newer measures of vascular volume and dynamic indices of fluid responsiveness, previously found to better reflect cardiac preload state than currently used parameters, will better predict low blood pressure episodes during dialysis than current methods.

Key facts

Study ID

NCT01171352

Run by

Oregon Health and Science University

People needed

0

Starts

2010-07-19

Expected to finish

2013-03-11

Last updated by the study team

2019-06-05

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Admitted to OHSU Hospitals ICUs
• Patient has acute or chronic needs for intermittent hemodialysis support during their ICU stay for any reason other than isolated hyperkalemia
• Central venous access in place separate from the dialysis catheter, or arteriovenous fistula or graft
• Two or more organ systems affected by critical illness requiring supportive care as documented in the medical chart.

You may not qualify if…

• age younger than 18 years old
• Weight > 160 kg
• burns greater than 40% total body surface area
• known cardiac or vascular aneurysm
• contraindications to femoral arterial puncture
• diagnosis of peripheral vascular disease
• not committed to full support
• participation in other experimental medication trial within 30 days
• current atrial or ventricular arrhythmias
• history of sever CHF- NYHA class >= III, previously documented EF < 30%
• severe aortic regurgitation
• anticipated ICU stay < 24 hrs
• not expected to require dialysis > 48 hours

Where it is running

• Oregon Health and Science University — Portland, Oregon, United States

Full record on ClinicalTrials.gov

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