Journal of cardiology
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Journal of cardiology · Oct 1995
Case Reports[Treatment of refractory hypoxemia due to right-to-left interatrial shunt complicating right ventricular infarction: successful short-term percutaneous catheter closure of the patent foramen ovale].
Refractory hypoxemia as a complication of right ventricular infarction is rare. A 74-year-old man developed persistent hypoxemia due to right-to-left interatrial shunting through a patent foramen ovale during the acute phase of right ventricular infarction. Short-term percutaneous transvenous closure of the patent foramen ovale with a large balloon occlusion catheter was life-saving.
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Journal of cardiology · Oct 1995
Clinical Trial[Assessment of right ventricular function by magnetic resonance imaging of old myocardial infarction].
The usefulness of magnetic resonance imaging (MRI) for estimating right ventricular function and the influence of left ventricular dysfunction on the performance of the right ventricle were assessed in 43 patients with chronic myocardial infarction (MI) and 14 control subjects (N) using electrocardiography-gated MRI and cardiac catheterization. Patients with MI were divided into three groups according to the location of the coronary lesions; 22 patients with left coronary artery lesion (LCA group), 13 with right coronary artery lesion (RCA group), and 8 with both left and right coronary artery lesions (L+R group). The right ventricular end-diastolic volume (RVEDV) and right ventricular ejection fraction (RVEF) were measured by Simpson's rule algorithm on transverse images of the right ventricle obtained at the end-systolic and end-diastolic phases. ⋯ The RVEF and RVEDV determined from MRI were significantly correlated with those from the thermodilution method (RVEF: r = 0.56, RVEDV: r = 0.52). There was no difference in right ventricular end-diastolic volume index in any patient group. The RVEF was decreased in the L+R (41.0 +/- 4.5%, p < 0.01) and RCA (45.9 +/- 6.6%) groups, but there was no difference between the LCA (50.6 +/- 6.6%) and N (48.9 +/- 4.3%) groups.(ABSTRACT TRUNCATED AT 250 WORDS)