Summary
A series of experiments investigating the quality of the signals obtained from intrauterine catheters was conducted in the labour rooms and laboratories. Clear evidence of signal attenuation due to partial blockage of catheters was obtained. Some methods which might help to overcome these problems are described.
Summary
Since there is some concern about the use of the Cardiff infusion pump in the automatic mode, experiments were devised to simulate some possible problems. The possibility of misleading information allowing overstimulation to occur was demonstrated. Even when the input signal was accurate there could, at least theoretically, be excessive stimulation. Some suggestions about future design and ways of correcting the problems are discussed.
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