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Intra‐Amniotic Catheter for Pressure Measurement in Fetal Heart Rate Monitoring
Author(s) -
Anderson Ian,
Renou Peter
Publication year - 1974
Publication title -
australian and new zealand journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.734
H-Index - 65
eISSN - 1479-828X
pISSN - 0004-8666
DOI - 10.1111/j.1479-828x.1974.tb00529.x
Subject(s) - catheter , body orifice , medicine , biomedical engineering , pressure sensor , fetal heart , transducer , heart rate , materials science , surgery , fetus , blood pressure , anatomy , pregnancy , engineering , electrical engineering , mechanical engineering , genetics , biology
This report describes a new type of nylon catheter for intra‐amniotic pressure measuring. We have monitored the fetal heart rate for some years and on occasions have experienced problems with insertion and blockage of open ended catheters used to measure intra‐uterine pressure which is essential for the interpretation of the significance of fetal heart rate changes. Blockage occurs at the distal end of the catheter, due either to the design or to leakage at the point of attachment to the pressure transducer, thus allowing debris to enter and obstruct the distal orifice. The new catheter is designed to overcome these difficulties. The pressure transducer is a device mounted on or near the monitor which converts the pressure in the catheter to an electrical signal. It usually has a Luer fitting for attachment of the catheter.