Abstract：
:Cardiotocographic signals, used as a perinatal diagnostic tool, comprise fetal heart beat signals (FHR), uterine contractions (UC) and fetal movements (FM). Visual inspection of these three signals is limited, subjective, time consuming and with low reproducibility. The present paper illustrates an application of signal processing techniques to the automatic analysis of cardiotocographic signals, allowing to overcome visual inspection limitations. Porto system of cardiotocograms automatic analysis acquires the signals from a conventional cardiotocograph. The signals are stored and processed by a personal computer. System software allows the user to perform several operations such as signal acquisition, signal storage and retrieval from files, signal analysis and display. Signal analysis is preceded by various signal conditioning operations (filtering, spike removal, etc.) and consists in the estimation of several parameters with diagnostic value: FHR baseline; FHR accelerations and decelerations; uterine contractions; long and short term FHR variability. The system prototype is working on a routine basis at the Obstetrics Department of S. João Hospital (main Oporto Hospital) and is being evaluated using a large data set. A preliminary evaluation performed by 3 experts on a 50 cases set, yielded an agreement rate with computer measurements of 98% for the baseline, 72% to 82% for accelerations and decelerations and 76% for the uterine contractions.
journal_name
Acta Med Portjournal_title
Acta medica portuguesaauthors
de Sá JP,Moura AC,Bernardes J,Leite LPsubject
Has Abstractpub_date
1992-01-01 00:00:00pages
28-30issue
1eissn
0870-399Xissn
1646-0758journal_volume
5pub_type
杂志文章abstract：INTRODUCTION:To analyze the cesarean section rate evolution in a tertiary hospital and the main indications for cesarean section. MATERIAL AND METHODS:A retrospective study was conducted at a major academic hospital and included 5 751 women who had a cesarean section from 2005 to 2011. The rates of overall, primary an...
journal_title：Acta medica portuguesa
pub_type： 杂志文章
doi：
更新日期：2013-11-01 00:00:00
abstract：:Osteoporosis in men, despite being a less important public health problem than osteoporosis in women, should not be neglected as it has many deleterious effects as well as social and economic costs. Finding the cause of osteoporosis is more complex in men than in women, and prevention should be based on an early evalu...
journal_title：Acta medica portuguesa
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journal_title：Acta medica portuguesa
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journal_title：Acta medica portuguesa
pub_type： 杂志文章,评审
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更新日期：2001-05-01 00:00:00
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journal_title：Acta medica portuguesa
pub_type： 杂志文章
doi：
更新日期：2011-05-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Acta medica portuguesa
pub_type： 杂志文章
doi：
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journal_title：Acta medica portuguesa
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doi：
更新日期：2007-11-01 00:00:00
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journal_title：Acta medica portuguesa
pub_type： 杂志文章,评审
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更新日期：2006-07-01 00:00:00
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journal_title：Acta medica portuguesa
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更新日期：1999-12-01 00:00:00
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更新日期：2014-01-01 00:00:00
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journal_title：Acta medica portuguesa
pub_type： 杂志文章
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更新日期：2007-03-01 00:00:00
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journal_title：Acta medica portuguesa
pub_type： 杂志文章
doi：
更新日期：1993-02-01 00:00:00
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pub_type： 杂志文章
doi：
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更新日期：1994-12-01 00:00:00
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journal_title：Acta medica portuguesa
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更新日期：1999-01-01 00:00:00
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更新日期：2006-03-01 00:00:00
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