Korean J Crit Care Med.  2010 Dec;25(4):235-240. 10.4266/kjccm.2010.25.4.235.

Physiologic Effect and Safety of Pumpless Extracorporeal Interventional Lung Assist in Korean Patients with Acute Respiratory Failure

Affiliations
  • 1Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. sbhong@amc.seoul.kr
  • 2Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.

Abstract

BACKGROUND
Pumpless interventional lung assist (iLA) uses an extracorporeal gas exchange system without any complex blood pumping technology, and has been shown to reduce CO2 tension and permit protective lung ventilation. The feasibility and safety of iLA were demonstrated in previous studies, but there has been no experience with iLA in Korea. The purpose of this study was to evaluate the feasibility of the iLA device in terms of physiologic efficacy and safety in Korean patients with acute respiratory failure.
METHODS
iLA was implemented in patients with acute respiratory failure who satisfied the predefined criteria of our study. Initiation of iLA followed an algorithm for implementation, ventilator care, and monitoring. Following insertion of arterial and venous cannulas under ultrasound guidance, the physiologic and respiratory variables and incidence of adverse events were monitored.
RESULTS
iLA was implemented in 5 patients and the duration of iLA ranged from 7 hours to 171 hours. At 24 hours after implementation, the mean changes in pH, PaCO2, and PaO2/FiO2 ranged from 7.204 to 7.393, from 68.4 mm Hg to 33 mm Hg, and from 128.7 mm Hg to 165 mm Hg, respectively. During iLA therapy, one adverse event was observed, which presented with hematochezia without hemodynamic change.
CONCLUSIONS
iLA treatment produced effective removal of carbon dioxide and allowed for protective ventilation in severe respiratory failure. An iLA system can easily be installed by percutaneous cannulation, without procedural complications, and without significant adverse events necessitating discontinuation of iLA after implementation.

Keyword

interventional lung assist; physiology; respiratory failure; safety

MeSH Terms

Carbon Dioxide
Catheterization
Catheters
Gastrointestinal Hemorrhage
Hemodynamics
Humans
Hydrogen-Ion Concentration
Incidence
Korea
Lung
Respiratory Insufficiency
Ventilation
Ventilators, Mechanical
Carbon Dioxide
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