Surgery – Diagnostic testing – Cardiovascular
Patent
1997-09-02
1999-07-13
Nasser, Robert L.
Surgery
Diagnostic testing
Cardiovascular
600500, 600561, 600587, 600593, A61B 500
Patent
active
059219351
ABSTRACT:
Non-invasive apparatus and method for obtaining a quantitative determination of mean left atrial transmural pressure or otherwise obtaining a quantitative determination of a left atrial pressure value. A balloon is inserted by means of a catheter into the esophagus and positioned adjacent the left atrium. The balloon is gradually inflated. A tracing of mean balloon pressure is obtained as the balloon is inflated. In addition, a tracing of balloon pressure on a steady baseline and with low frequency oscillations due to respiration filtered out is obtained whereby the tracing represents balloon pressure oscillations effected by left atrial pressure. In accordance with the oscillometric principle the mean balloon pressure is measured when the intensity of a sound wave, after its transmission through the balloon, is at a peak. This mean balloon pressure, after adjustment for the effect, if any, of heart weight, is indicative of approximate mean left atrial pressure. Mean left atrial transmural pressure may be determined by adjusting for the effects of heart weight and intrapleural pressure on mean pressure at peak sound intensity by subtracting therefrom the balloon pressure at which balloon volume begins to increase greatly relative to the increase in balloon pressure.
REFERENCES:
patent: 4134402 (1979-01-01), Mahurkar
patent: 4214593 (1980-07-01), Imbruce et al.
patent: 4379460 (1983-04-01), Judell
patent: 4409986 (1983-10-01), Apple et al.
patent: 4502490 (1985-03-01), Evans et al.
patent: 4517984 (1985-05-01), Perlin
patent: 4706688 (1987-11-01), Don Micheal et al.
patent: 4729384 (1988-03-01), Bazenet
patent: 4850969 (1989-07-01), Jackson
patent: 5048532 (1991-09-01), Hickey
patent: 5181517 (1993-01-01), Hickey
patent: 5191892 (1993-03-01), Blikken
patent: 5263485 (1993-11-01), Hickey
patent: 5269775 (1993-12-01), Bodickey
patent: 5398692 (1995-03-01), Hickey
patent: 5433216 (1995-07-01), Sugrue et al.
patent: 5570671 (1996-11-01), Hickey
patent: 5697375 (1997-12-01), Hickey
"We'll meet your needs.", Teleflex Medical/Fluoroplastics, Incorporated, Tall Pines Park, Jaffrey NH 03452.
Brown, A Study of the Esophageal Lead in Clinical Electrocardiography, American Heart J., vol. 12, No. 1, Jul., 1936, pp. 1-45.
Oblath and Karpman, The Normal Esophageal Lead Electrocardiogram American Heart J., vol. 41, 1951, pp. 369-381.
Arborelius et al, Hemodynamic Changes in Man During Immersion with Head Above Water, Aerospace Medicine, Jun., 1972, pp. 592-598.
Lategola and Rahn, A Self-Guiding Catheter for Cardiac and Pulmonary Arteria Catheterization and Occlusion, 84 Proc. Soc. Exp. Biol. Med. 667-668 (1953).
Swan, Ganz, Forrester, Marcus, Diamond and Chonette, Catheterization of the Heart in Man With Use of a Flow-Directed Balloon-Tipped Catheter, 283:9 The New England J. Med. 447 (1970).
Murray, Complications of Invasive Monitoring, 15:2 Medical Instrumentation 85 at P. 89 (Mar.-Apr. 1981).
Robin, Death by Pulmonary Artery Flow-Directed Catheter (editorial), time for a Moratorium?, 92:4 Chest 727 (Oct. 1987).
H.R. Anderson and P. Pless, Trans-Esophageal Pacing, 6 PACE 674 (Jul.-Aug. 1983).
R.P. Lasser and L. Loewe, Characteristic Pressure Pulses Recorde with an Esophageal Balloon in Experimental Mitral Insufficiency Dogs, Proc. Soc. Experimental Biol. Med. 77:798 (1951).
R.P. Lasser and L. Loewe, Esophageal Pressure Pulse Patterns (Esophageal Piezocardiogram), Am. Heart J. 44:531 (1952).
A.C. Taquini, The Esophageal Pulse Under Normal and Abnormal Conditions, Am. Heart J. 20:2 (1940).
M. Zoob, The Esophageal Pulse in Mitral Valve Disease, Brit. Heart J. 16:39 (1954).
A. J. Gordon, L. Kuhn S. S. Amram, E. Donoso, E. Braunwald, Left Atrial, "Pulmonary Capillary," and Esophageal Balloon Pressure Tracings in Mitral Valve Disease, Brit. Heart J. 18:327-340 (1956).
Robin, The Cult of the Swan-Ganz Catheter, Overuse and Abuse of Pulmonary Flow Catheters, 103:3 Annals of Internal Medicine 445 (Sep. 1985).
Rowley, Clubb, Smith and Cabin, Right-Sided Infective Endocarditis as a Consequence of Flow-Directed Pulmonary-Artery Catheterization, 311:18 The New England J. Med. 1152 (Nov. 1, 1984).
J.M. Gore et al., Handbook of Hemodynamic Monitoring, 3 (1985).
Gore et al., A Community-Wide Assessment of the Use of Pulmonary Artery Catheters in Patients with Acute Myocardial Infarction, 92:4 Chest 712 Oct. 1987.
Baker et al., "Oesophageal Multipurpose Monitoring Probe", Anaesthia, 1983, vol. 38, pp. 892-897.
Nasser Robert L.
Simmons James C.
The Research Foundation of State University of New York
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