PubMed · 5178786
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W Schweisheimer. 1966. [Heart catheterization].. https://pubmed.ncbi.nlm.nih.gov/5178786/
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In short, this method (the Terumo SP hydrophilic-polymer coated microcatheter system) has proved to be safe, effective, and flexible; it has allowed us to cross critically stenotic valves when standard methods have failed, enabling us to accomplish balloon valvuloplasty with good results in patients who might have otherwise required surgical intervention because of inability to cross the pulmonary valve.
In patients with mechanical valves in both the mitral and aortic positions, direct ventricular puncture is the recommended approach to catheterization. We report a case in which two-dimensional (2D) echocardiography was used to guide left heart catheterization by direct ventricular puncture and propose that the use of 2D echocardiography might reduce the risks historically associated the procedure.