Surgery – Truss – Pad
Patent
1994-09-21
1997-01-28
Kamm, William E.
Surgery
Truss
Pad
A61B 50444
Patent
active
055969933
ABSTRACT:
A fetal data processing system and method and a fetal monitor and method for monitoring the condition of a fetus are disclosed. A fetal heart rate time series is received and sampled. A non-linear time-frequency transformation is performed to generate a time-frequency representation of the fetal heart rate time series for heart rate time series data spanning a time period which is preferably less than ten seconds. Analysis of fetal heart rate and fetal heart rate variability and other available data is performed to evaluate fetal well-being. Because of the high time resolution of the transformation, short-term transient variations in heart rate and heart rate variability are considered in the analysis.
REFERENCES:
patent: 3599628 (1971-08-01), Abbenante et al.
patent: 4781200 (1988-11-01), Baker
patent: 4890624 (1990-01-01), Ganguly et al.
patent: 5042499 (1991-08-01), Frank et al.
patent: 5265613 (1993-11-01), Feldman et al.
patent: 5442940 (1995-08-01), Secker et al.
Brochure and diskette regarding Ansar Medic Monitor ANS-R1000 Real Time Non-Invasive Power Spectrum Heart Rate Analysis.
Brochure entitled "System 8000 Sonicaid Antepartum Fetal Heart Rate Analysis," Oxford Instruments Medical Systems Division.
Hlawatsch, F., et al., "Linear and Quadratic Time-Frequency Signal Representations," IEEE Signal Processing Magazine, pp. 21-67, (Apr. 1992).
Mantel, R., et al., "Automated analysis of near-term antepartum fetal heart rate in relation to fetal behavioral states: The Sonicaid System 8000," Am. J. Obstet. Gynecol., 165(1):57-62, (Jul. 1991).
Novak, P., et al., "Time/frequency mapping of the heart rate, blood pressure and respiratory signals," Medical & Biological Engineering & Computing, 31:103-110, (Mar. 1993).
Hyndman, B. W., et al., "Spectral analysis of heart rate variability revisited. Comparison of the methods," Preprint, Computers in Cardiology, London, 1993, pp. 1-4.
Abboud, S., et al., "Power spectrum analysis of fetal heart rate variability using the abdominal maternal electrocardiogram," J. Biomed. Eng., 12:161-162 (Mar. 1990).
Chess, et al., "Spectral analysis as a diagnostic aid in the management of high-risk pregnancy," Am. J. Obstet. Gynecol., pp. 471-474, (Feb. 1976).
Karin, J., et al., "An Estimate of Fetal Automatic State by Spectral Analysis of Fetal Heart Rate Fluctuations," Pediatric Research, 34(2):134-138, (1993).
Dawes, G. S., et al., "Computerized analysis of episodic changes in fetal heart rate variation in early labor," Am. J. Obstet. Gynecol., 165(3):618-624, (Sep. 1991).
Beksac, M. S., et al., "The validation of a computerized system for the interpretation of the antepartum fetal heart rate tracings (version 89/2.34)," European Journal of Obstetrics & Gynecology and Reproductive Biology, 42:9-14, (1991).
Mantel, R., et al., "Computer Analysis of Antepartum Fetal Heart Rate: 1. Baseline Determination," Int. J. Biomed. Comput., 25:261-272, (1990).
Mantel, R., et al., "Computer Analysis of Antepartum Fegal Heart Rate: 2. Detection of Accelerations and Decelerations," Int. J. Biomed. Comput., 25:273-286, (1990).
Pello, L. C., et al., "Computerized Fetal Heart Rate Analysis in Labor," Obstetrics & Gynecology, 78(4):602-610, (Oct. 1991).
Lilja, H., et al., "Fetal ECG during labour: a presentation of a microprocessor system," J. Biomed. Eng., 10:348-350, (Jul. 1988).
van Ravenswaaij-Arts, C. M. A., et al., "Heart Rate Variability," Annals of Internal Medicine, 118(6):436-447, (Mar. 1993).
Stein, P. K., et al., "Heart rate variability: A measure of cardiac autonomic tone," American Heart Journal, 127(5):1376-1381, (1994).
Rouwendaal, F. T. N., et al., "The HRV-Explorer: An Object-Oriented Workstation for the Analysis of Large RR-interval Databases," Preprint, Computers in Cardiology, London, 1993, pp. 1-4.
Thaler, I., et al., "Interpretation of the fetal ECG during labor: the effect of uterine contractions," J. Perinat. Med., 16:373-379, (1988).
Field, D. R., et al., "Fetal heart rate variability and cerebral oxygen consumption in fetal sheep during asphyxia," European Journal of Obstetrics & Gynecology and Reproductive Biology, 42:145-153, (1991).
Arduini, D., et al., "Quantitative Analysis of Fetal Rate: Its Application in Antepartum Clinical Monitoring and Behavioral Pattern Recognition," Int. J. Biomed. Comput., 25:247-252, (1990).
Novak, V., et al., "Influence of respiration on heart rate and blood pressure fluctuations," American Physiological Society, pp. 617-626, (1993).
Pincus, S. M., et al., "Approximate Entropy: A Regularity Measure for Fetal Heart Rate Analysis," Obstetrics & Gynecology, 79 (2):249-255, (Feb. 1992) .
Bennett Frederick M.
Oriol Nancy E.
Beth Israel Hospital
Kamm William E.
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