TITLE

Seventy-two hour gas exchange performance and hemodynamic properties of NOVALUNG®iLA as a gas exchanger for arteriovenous carbon dioxide removal

AUTHOR(S)
Zhou, Xiaoqin; Loran, David B.; Wang, Dongfang; Hyde, Brannon R.; Lick, Scott D.; Zwischenberger, Joseph B.
PUB. DATE
November 2005
SOURCE
Perfusion;Nov2005, Vol. 20 Issue 6, p303
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Objective: Acute respiratory failure is complicated by acidosis and altered end-organ perfusion. NOVALUNG®iLA is an interventional lung assist (ILA) device for arteriovenous carbon dioxide removal (AVCO2R). The present study was conducted to evaluate the device for short-term CO2 removal performance and hemodynamic response. Methods: Six adult sheep received cannulation of the jugular vein and carotid artery. The ILA-AVCO2R circuit was placed on the sheep for 72 hours. Hemodynamics and PaCO2 were measured; CO2 removal was calculated while varying sweep gas flow rates (Qg), device blood flow rates (Qb), and PaCO2. Results: Hemodynamic variables remained normal throughout the 72 hour study. CO2 removal increased with increases in Qg or Qb. Mean CO2 removal was 119.3 ml/min for Qb 1 L/min, Qg 5 L/min, and PaCO2 40–50 mmHg. PaCO2 was directly proportional to CO2clearance (R =0.72, p <0.001). Conclusion: NOVALUNG®iLA can provide near total CO2 removal with Qb 1–2 L/min, Qg 5 L/min, and minimal flow resistance (3.88±0.82 mmHg/L/min). PaCO2 correlates with CO2 removal and is dependent on Qb and Qg.
ACCESSION #
18826225

 

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