What are the differences between venoarterial and venovenous pediatric ECMO?

Updated: Dec 21, 2017
  • Author: Edwin Rodriguez-Cruz, MD; Chief Editor: Stuart Berger, MD  more...
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Answer

Answer

Table. Differences Between Venoarterial and Venovenous Extracorporeal Membrane Oxygenation (Open Table in a new window)

Venoarterial ECMO

Venovenous ECMO

Higher PaO2 is achieved.

Lower PaO2 is achieved.

Lower perfusion rates are needed.

Higher perfusion rates are needed.

Bypasses pulmonary circulation

Maintains pulmonary blood flow

Decreases pulmonary artery pressures

Elevates mixed venous PO2

Provides cardiac support to assist systemic circulation

Does not provide cardiac support to assist systemic circulation

Requires arterial cannulation

Requires only venous cannulation

In certain patients with cardiac or respiratory failure who have recently undergone cardiac surgery, transthoracic cannulation of the right atrial appendage and the aortic arch can be used as an alternative to neck cannulation. Transthoracic cannulation allows left heart decompression by cannulation of the left atrium. This is useful in patients with primary left heart failure.


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