ABC of labour care: Physiology and management of normal labour

An important development in the management of labour was the introduction of the partogram. First developed by Hugh Philpott in 1972 to identify abnormally slow labour, the partogram is a graphical representation of the changes that occur in labour, including cervical dilatation, fetal heart rate, maternal pulse, blood pressure, and temperature; it also shows a numerical record of features …

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1115220/