Surgery – Truss – Pad
Patent
1993-08-30
1995-06-13
Sykes, Angela D.
Surgery
Truss
Pad
128668, 128692, A61B 50215
Patent
active
054233232
ABSTRACT:
A catheter set (10) is used in connection with a blood flow monitor and calibration system (80) to determine the compliance C of a vessel according to the equation C=dV2/ (PE-PA), where dV2 is the change in volume of the vessel created by the change in volume (e.g., deflation) of a displacement balloon (30) adjacent to a catheter (14), PE is an estimate of what the pressure measured by a pressure transducer (56) or a strain gage (78) would have been but for the change in volume of the displacement balloon at a particular time, and PA is the actual pressure measured by the transducer at the particular time. The determined compliance is more accurate than that obtained through thermal dilution procedures. The determined value of compliance C may then be used in calculation of blood flow. In addition, pulmonary vascular resistance and systemic vascular resistance may calculated through procedures and in equations using the determined compliance without directly measuring the pulmonary capillary wedge pressure.
REFERENCES:
patent: 3556082 (1971-01-01), McCullough
patent: 3920004 (1975-11-01), Nakayama
patent: 4227407 (1980-10-01), Drost
patent: 4357106 (1982-11-01), Tschirren et al.
patent: 4507974 (1985-04-01), Yelderman
patent: 4509526 (1985-04-01), Barnes et al.
patent: 4562843 (1986-01-01), Djordjevich et al.
patent: 4621646 (1986-11-01), Bryant
patent: 4660564 (1987-04-01), Benthin et al.
patent: 4669485 (1987-06-01), Russell
patent: 4685470 (1987-08-01), Sekii et al.
patent: 4691709 (1987-09-01), Cohen
patent: 4796634 (1989-01-01), Huntsman et al.
patent: 4819655 (1989-04-01), Webler
patent: 4836214 (1989-06-01), Sramek
patent: 4841974 (1989-06-01), Gumbrecht et al.
patent: 4841981 (1989-06-01), Tanabe et al.
patent: 4873989 (1989-10-01), Einzig
patent: 4877035 (1989-10-01), Bogen et al.
patent: 4878898 (1989-11-01), Griffin et al.
patent: 4909259 (1990-03-01), Tehrani
patent: 4947852 (1990-08-01), Nassi et al.
patent: 4949724 (1990-08-01), Mahutte et al.
patent: 4953556 (1990-09-01), Evans
patent: 4957115 (1990-09-01), Selker
patent: 4979514 (1990-12-01), Sekii et al.
patent: 5052395 (1991-10-01), Burton et al.
patent: 5176144 (1993-01-01), Yoshikoshi et al.
patent: 5275169 (1994-01-01), Afromowitz et al.
R. A. Wolthius; M. A. Afromowitz; G. L. Mitchell; D. Frank; T. Lenihan and M. Bouchard "A New Method for Measuring Intra-arterial Size and Arterial Wall Compliance"-FASEB J vol. 8, No. 5 (part 2); A866, 1994.
Bazett, HC.; Cotton, FS.; Laplace, LB.; & Scott, JC: "The Calculation of Cardiac Output and Effective Peripheral Resistance From Blood Pressure Measurements . . . , " Am. J. Physiol., 113:312-334 (1935).
Bourgeois, MJ; Gilbert, BK; Donald, DE; Wood, EH: "Characteristics of Aortic Diastolic Pressure With Application to the Continuous Monitoring of Changes . . . , " Circulation Research 35:56-66 (1974).
Dollar, ML: "Evaluation of a Continuous Thermodilution Cardiac Output Catheter," ASAIO J. 38:M351-356 (1992).
Fry, DL; Mallos, AJ; & Caspe, AGT: "A Catheter Tip Method for Measurement of Instantaneous Aortic Velocity," Circulation Research, IV:627-632 (Sep. 1956).
Ganz, W.; Swan, HJC: "Measurement of Blood Flow by Thermoldilution" AM. J. Cardiology, 29:241-246 (Feb. 1972).
Greenfield, JC; & Fry, DL: "A Critique: Relationship of the Time Derivative of Pressure to Blood Flow" J. Appl. Physicl. 20(6): 1141-1147 (1965).
Guarini, M; Urzua, J; Cipriano, A; & Matus, M: "Nonlinear Cardiovascular Parameter Estimation Using the Arterial Pressure Waveform," Trans of the Soc for Comp Sim (1992).
Guyton, A. et al, Circulatory Physiology: Cardiac Output and its Regulation, Chapter 5, pp. 99-107 (2nd Ed. 1973).
Hamilton, WF; & Remington, JW: "The Measurement of Stroke Volume From the Pressure Pulse" Amer. J. Physiol. 148: 14-24 (1947).
Jones, WB; Hefner, LL; Bancroft, WH; & Klip, W: "Velocity of Blood Flow and Stroke Volume Obtained from the Pulse Pressure", J. Clin Invest., 38:2087-2090 (1959).
Jones, WB; & Griffin, JB: "Comparison of Computed Aortic Blood Velocity with that of Electromagnetic Flowmeter" J. Appl. Physiol. 17(3): 482-486 (1962).
Khalil, HH: "Measurement of Cardiac Output by Thermal Dilution and Direct Fick Methods in Dogs" J. Appl. Physiol., 21: 1131-1135 (1966).
Kouchoukos, NU; Sheppard, LC; & McDonald, DA: "Estimation of the Stroke Volume in the Dog by a Pulse Contour Method," Circulation Research, 26: 611-623 (May 1970).
Kouchoukos, NT; Sheppard, LC; McDonald, DA; and Kirklin, JW: "Estimation of the Stroke Volume From the Central Arterial Pressure Contour in . . . ", Surgical Forum (Cardiac Surgery) 20: 180-182 (1969).
Martin, JF; & Volfson, LB: "Determination of Continuous Cardiac Output From the Arterial Pressure Waveform: Application of Pattern Recognition and Image Processing" IEEE, 0-7803-1377-Jan. 1993, 663-664.
McDonald, DA: "The Relation of Pulsatile Pressure to Flow in Arteries" J. Physiol. 127: 533-552 (1955).
Peters, JL: "Consequences of the Diaphragm Driven Artificial Heart-Animal Implantation and Mock Circulation Studies" Chest, 63:589-597 (No. 4, Apr. 1973).
Pieper, HP: "Work of the Heart Under the Effect of Induced Arterial Pressure Oscillations Studied in Intact Anesthetized Dogs" Circulation Research, 10:285-294 (Mar. 1962).
Promotional Materials, "Portable Heart Function Monitor" Research and Development Center for Biomedical Instruments of the Beijing Polytechnic University.
Promotional Materials, "Arterial/Venous Blood Flow Measurement Methods: Comparison of Features," Transonics Systems, Ithica, NY, updated Mar. 1990.
Remington, JW; Hamilton, WF; & Dow, P: "Some Difficulties involved in the Prediction of the Stroke Volume From the Pulse Wave Velocity" Pat. J. Physiol. 536-545 (1945).
Starmer, CF; McHale, PA; Cobb, FR; & Greenfield, JC: "Evaluation of Several Methods for Computing Stroke Volume from Central Aortic Pressure" Circulation Research, 33:139-148 (Aug. 1973).
Verdouw, PD; Beaune, GQ Roelandt, J; & Hugenholtz, PG: "Stroke Volume From Central Aortic Pressure!A Critical Assessment of the Various Formulae as to Their . . . " Basic Res. Cardiol. 70:377-389 (1975).
Warner, HR; Swan, HJC; Connolly, DC; Tompkins, RG; & Wood, EH: "Quantitation of Beat-to-Beat Changes the Stroke Volume From the Aortic Pulse Contour in Man" J. Appl. Physiol, 5:495-507 (Mar. 1953).
Warner, HR; Gardner, RE; & Toronto, AF: "Computer-based Monitoring of Cardiovascular Functions in Postoperative Patients" Suppl II to Circulation, vols. 37 and 38; 37:II68-II74 (Apr. 1968).
Watt, TB; & Burrus, CS: "Arterial Pressure Contour Analysis for Estimating Human Vascular Properties" J. Appl. Physiol. 40:171-176 (No. 2, Feb. 1976).
Wetterer, E: "Flow and Pressure in the Arterial System, Their Hemodynamic Relationship, and the Principles of Their Measurement" Minn,. Med. 37:77-86 (Feb. 1954).
"The Swan-Ganz Flow-Directed Thermodilution Catheter" brochure by Edwards Laboratories, 1974.
Rocky Mountain Research, Inc.
Sykes Angela D.
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