Open AccessComputer Description of the Cardiotocogram
Author(s) -
Stigsby Bjarne,
Nielsen Peter Vest,
Olesen Mogens Brix,
Jaszczak Poul,
Larsen Jørgen Falck,
Lenstrup Carsten
Publication year - 1982
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016348209156181
Subject(s) - medicine , amplitude , minicomputer , latency (audio) , magnetic tape , duration (music) , uterine contraction , digital computer , cardiology , line (geometry) , fetal heart rate , heart rate , blood pressure , digital recording , computer science , computer hardware , uterus , acoustics , telecommunications , mathematics , operating system , physics , computer engineering , geometry , quantum mechanics
. Principles of calculations used for computer description of the cardiotocogram (CTG) were evaluated. Fetal heart rate (FHR) and intrauterine pressure (IUP) were recorded simultaneously on magnetic tape. Subsequent quantitative analysis was performed on a general purpose digital minicomputer. The program automatically detects decelerations, accelerations and uterine contractions. The following variables are determined automatically: baseline level and variability; duration, amplitude, area, latency time and lagtime of the alterations; uterine resting tone; duration, amplitude and area of uterine contractions. Trends of all variables can be presented graphically. The program can function off‐line, as well as on‐line, using about seven minutes of computational time to describe one hour of CTG.