The Authors report on their own experience of 77 lithium pacemaker implanted between 1974 and September 1977 in the Centre of Cardiac Surgery of the University of Genova (Italy). Only one generator has been replaced till now because of liquid infiltration. Rate variations in pacemaker marketed by Sorin were studied, considering the test-stand rate the first control and the following rate controls; the reliability of this parameter was confirmed.
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