PMC4681964_01
Cardiac MRI (MR Phillips 1.5 T, 4-chamber view) was performed at rest (a) and after "lung packing" with a subsequent 2-min apnea (b). At the end apnea, both right and left ventricular volumes were significantly reduced, likely due to both reduced venous return and increased intrapulmonary pressure. Thus, ventricular wall thicknesses were markedly increased.
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At the end apnea, both right and left ventricular volumes were significantly reduced (Fig. 1), likely due to both reduced venous return and increased intrapulmonary pressure.
Aortic valve flow measurements were performed at rest (labeled as "control", black) and after lung packing and subsequent 2 min apnea. "Lung packing" was associated with a decrease of aortic flow (grey).
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Fig. 2 shows the impact of "lung packing" and dry apnea on ascending aortic flow patterns.