Data Collection During CT for Axial Flow VADs
At present, there is not accurate way to determine specific flow rates for axial flow ventricular assist devices (VADS). If a right heart cath is needed for these patients for clinical purposes, they will also undergo a cardiac CT scan while the pulmonary artery catheter is in place. It is possible to visualize the flow rates of axial flow VAD's and determine a more accurate rate per specific patient.
Data Analyzed with following results:
Article in Press for Cardiopulmonary Support and Physiology, results state "Pairwise comparison of calculated output from left ventricular assist devices is feasible using first pass dynamic computed tomography test bolus technique versus thermodilution output measurements yielded good agreement (P=.03). The output calculated using dynamic CT underestimated the thermodilution output measurement by 0.54+ 0.37 L/min (95% confidence interval 0.66-0.94).
|Study Design:||Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||Pilot Study of Data Collection During Computerized Tomography (CT) to Determine Accurate Flow Rates for Axial Flow Ventricular Assist Device (VAD) Patients|
- data collection to help determine better clinical evaluation [ Time Frame: ongoing ] [ Designated as safety issue: Yes ]
|Study Start Date:||June 2006|
|Study Completion Date:||February 2009|
|Primary Completion Date:||February 2009 (Final data collection date for primary outcome measure)|
Procedure: Cardiac CT
Description as listed in Summary. The hemodynamic data collected along with pump parameters may help determine more accurate flow rates specific to each patient.
|United States, Ohio|
|The Ohio State University Medical Center|
|Columbus, Ohio, United States, 43210|
|Principal Investigator:||Benjamin Sun, MD||Ohio State University, Division of Cardiothoracic Surgery|