Of course there were problems with that process!
The Cardiff infusion pump has been phased out because of all the problems, but the cardiotocograph lives on, despite evidence that it is not reliable, overly useful, accurate nor does it enable women freedom of movement, known to provide the best opportunity to birth well and have optimal oxygenation of the woman and her baby.
The cardiotocograph machine has become the constant in the standard birth room and has taken the place of the midwife in the role of being 'with woman'.
An insightful honest account of the uselessness of cardiotocograph monitoring of labouring women is provided in the link below.
Test leads to needless C-sections | Philadelphia Inquirer | 04/26/2010
What's known is that the rampant use of cardiotocographs has increased the caesarean section rate with no benefit.
Dr Alex Friedman, a Fellow of Maternal-Fetal Medicine at the Hospital of the University of Pennsylvania said:
"A 2006 analysis by the British Cochrane Collaboration, evaluating all available research, found that fetal heart monitoring failed to reduce perinatal mortality - the risk of a baby's dying late in pregnancy, during birth, or shortly after birth - and increased cesarean section rates and forceps deliveries, compared with listening to a baby's heart rate intermittently".
Steven Clark and Gary Hankins, two prominent obstetricians said
"A test leading to an unnecessary major abdominal operation in more than 99.5 percent of cases should be regarded by the medical community as absurd at best," they wrote in the American Journal of Obstetrics and Gynecology. "Electronic fetal heart rate monitoring has probably done more harm than good."
and The Doctors' Channel has an excellent video explaining that C-Sections, necessary or not increase maternal morbidity and mortality.
So why are they still done so mindlessly?
The answer is best summed up by this comment:
"Why do doctors cling to continuous fetal heart monitoring? An obstetrician will most likely point to the fear of being sued, but the complete answer is more complex. Our medical culture prizes technology and tests, even if they don't work and can cause harm".