Surgery – Truss – Pad
Patent
1992-11-17
1993-09-07
Cohen, Lee S.
Surgery
Truss
Pad
128687, 128672, A61B 5029
Patent
active
052419665
ABSTRACT:
Apparatus for Measuring Stroke Volume/Cardiac Output includes a transducer for measuring arterial blood pressure waveform, a digitizer for digitizing the analog signal generated by the transducer and a digital signal processor for determining ejection time and heart rate. Processor circuitry determines cardiac output using the ejection time, heart rate, the body surface area and age of the patient, with the cardiac output measure being displayed by the meter.
REFERENCES:
patent: 4137910 (1979-02-01), Murphy
patent: 4562843 (1986-01-01), Djordjevich et al.
patent: 4807638 (1989-02-01), Sramek
Study, "Trending Cardiac Output in Surgical ICU Patients Using the Pulse Contour Method," G. A. Tannenbaum et al., Columbia University, Mar. 5, 1992.
R. M. Cundick, Jr. et al., "Clinical Comparison of Pressure-Pulse and Indicator-Dilution Cardiac Output Determination", Circulation 62, pp. 371-376 (1980).
H. R. Warner et al., "Computer-Based Monitoring of Cardiovascular Functions in Postoperative Patients", Circulation 37 (Suppl. II), pp. II-68-II-74 (1968).
N. T. Kouchoukos et al., "Estimation of Stroke Volume in the Dog by a Pulse Contour Method", Circulation Research 26, pp. 611-623 (1970).
T. Tajimi et al., "Evaluation of Pulse Contour Methods in Calculating Stroke Volume from Pulmonary Artery Pressure Curve (Comparison with Aortic Pressure Curve)", European Heart Journal 4, pp. 502-511 (1983).
D. F. Opdyke, "Genesis of the Pressure Pulse Contour Method for Calculating Cardiac Stroke Index", Federation Proceedings 11, pp. 733-737 (1952).
H. R. Warner et al., "Quantitation of Beat-to-Beat Changes in Stroke Volume From the Aortic Pulse Contour in Man", J. Appl. Physiol. 5, pp. 495-507 (1953).
C. F. Starmer et al., "Evaluation of Several Methods for Computing Stroke Volume from Central Aortic Pressure", Circulation Research 33, pp. 139-148 (1973).
M. J. Bourgeois et al., "Continuous Determination of Beat-to-Beat Stroke Volume from Aortic Pressure Pulses in the Dog", Circulation Research 39, pp. 15-24 (1976).
E. L. Alderman et al., "Evaluation of the Pulse-Contour Method of Determining Stroke Volume in Man", Circulation 46, pp. 546-558 (1972).
J. B. English et al., "Comparison of Aortic Pulse-wave Contour Analysis and Thermodilution Methods of Measuring Cardiac Output During Anesthesia in the Dog", Anesthesiology 52, pp. 56-61 (1980).
H. Smulyan et al., "An Evaluation of the Cardiac Index", American Heart Journal 72(S), pp. 621-631 (1966).
L. J. Krovetz, "Normal Standards for Cardiovascular Data I. Examination of the Validity of Cardiac Index", Johns Hopkins Medical Journal 130(3), pp. 174-186, (1972).
A. M. Weissler et al., "Relationships Between Left Ventricular Ejection Time, Stroke Volume, and Heart Rate in Normal Individuals and Patients with Cardiovascular Disease", Am. Heart J. 62, p. 367-378 (1961).
J. W. Remington, "Volume Quantitation of the Aortic Pressure Pulse", Federation Proceedings 11, pp. 750-761 (1952).
R. S. Alexander, "Factors Determining the Contour of Pressure Pulses Recorded From the Aorta", Federation Proceedings 11, pp. 738-749 (1952).
P. Lompard et al., "Effect of Posture on the Length of the Systole of the Human Heart", Am. J. Physiol. 40, pp. 140-141 (1919).
M. J. Bourgeois et al., "Characteristics of Aortic Diastolic Pressure Decay with Application to the Continuous Monitoring of Changes in Peripheral Vascular Resistance", Circulation Research 35, pp. 56-66 (1974).
A. M. Weissler et al., "Systolic Time Intervals in Heart Failure in Man", Circulation 37, pp. 149-159 (1968).
M. A. Stefadouros et al., "The Efect of Isometric Exercise on the Left Ventricular Volume in Normal Man", Circulation 49, pp. 1185-1189 (1974).
E. Braunwald et al., "Determinants of Duration and Mean Rate of Ventricular Ejection", Circulation Research 6, pp. 319-325 (1958).
A. G. Wallace et al., "Duration of the Phases of Left Ventricular Systole", Circulation Research 12, pp. 611-619 (1963).
Stanley M. Finkelstein et al., "Arterial Vascular Compliance Responses to Vasodilators by Fourier and Pulse Contour Analysis", Hypertension 12, pp. 380-387 (1988).
Homer R. Warner, "The Role of Computers in Medical Research", JAMA 196 (11), pp. 944-949 (1966).
A. Harley et al, "Pressure-Flow Studies in Man. An Evaluation of the Duration of the Phases of Systole", The Journal of Clinical Investigation 48, pp. 895-905 (1969).
J. W. Remington et al., "Formation of Peripheral Pulse Contour in Man", J. Appl. Physiol. 9, pp. 433-442 (1952).
J. Alan Herd et al., "Arterial Pressure Pulse Contours During Hemorrhage in Anesthetized Dogs", J. Appl. Physiol. 21 (6), pp. 1864-1868 (1966).
P. Cinnelli et al., "Systolic Time Intervals During Isometric Exercise in Supine Position Should be Corrected Also for Arterial Pressure", Acta Cardiologica 37 (2), pp. 93-103.
J. Willems, et al., "The Left Ventricular Ejection Time. Its Relation to Heart Rate, Mechanical Systole and Some Anthropometric Data", Acta Cardiologica 22, pp. 401-425 (1967).
D. A. McDonald, Blood Flow in Arteries, Williams & Wilkins Co., Baltimore, pp. 258-281 (1960).
A. Holmgren et al., "Circulatory Data in Normal Subjects at Rest and During Exercise in Recumbent Position, with Special Reference to the Stroke Volume at Different Work Intensities", Acta Physiol. Scand. 49, pp. 343-363 (1960).
"Systolic Time Intervals Reconsidered, Reevaluation of the Preejection Period: Absence of Relation to Heart Rate," by D. H. Spodick et al., The American Journal of Cardiology, vol. 53, pp. 1667-1670 (Jun. 1, 1984).
"Systolic Time Intervals at Rest and During Exercise," by D. Cardus and L. Vera, Cardiology, vol. 59, pp. 133-153 (1974).
"The Mechanics of the Circulation," by C. G. Caro et al., Oxford Medical Publications, pp. 268-278 (1978).
Article, L.-G. Ekman et al., "Clinical Evaluation of an Ensemble-Averaging Impedance Cardiograph for Monitoring Stroke Volume During Spontaneous Breathing", Acta Anaesthesiol Scand, 34: 190-196 (1990).
Cohn Jay N.
Finkelstein Stanley M.
Cohen Lee S.
Hypertension Diagnostics, Inc.
Pontius Kevin
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