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Reproducibility of ultrasonic measurement of fetal cardiac haemodynamics
Author(s) -
BEEBY A. R.,
DUNLOP W.,
HEADS A.,
HUNTER S.
Publication year - 1991
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1991.tb13487.x
Subject(s) - reproducibility , doppler effect , hemodynamics , cardiac output , ultrasonic sensor , observer (physics) , biomedical engineering , medicine , doppler ultrasound , cardiology , mathematics , statistics , radiology , physics , quantum mechanics , astronomy
Summary. Two observers made independent estimates of volume flow across all four heart valves in 27 fetuses using a combination of cross‐sectional and Doppler echocardiography. There were considerable discrepancies between observers in volume flow estimation arising from inconsistency both in cross‐sectional and in Doppler measurements. One observer also produced a second estimate by making new measurements from the original recordings. There was considerable within‐observer variability which was mainly due to errors in cross‐sectional measurements. The problems of applying this technique to fetal cardiac haemodynamics are discussed.