Journal ArticleDOI
Right atrium and superior vena cava flow velocity in man measured with the Doppler-Catheter Flowmeter-Telemetry system☆
Alberto Benchimol,H.Fred Stegall,John L. Gartlan,Egeu C. Barreto,Marvin R. Goldstein,Jose Sandoval +5 more
TLDR
This technic appears to be useful in studying instantaneous, phasic superior vena cava and right atrial flow velocity in conscious, unanesthetized man in health and disease.About:
This article is published in The American Journal of Medicine.The article was published on 1970-03-01. It has received 91 citations till now. The article focuses on the topics: Superior vena cava & Central venous pressure.read more
Citations
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Journal ArticleDOI
Pulsatile Blood Flow
TL;DR: Clinical investigation of pulsatile flow is now possible with catheter-tip flowmeters that can be used in routine cardiac care, and the formulation of theories appropriate to oscillatory flow in blood vessels has gained new impetus from three recent developments.
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Superior vena cava and hepatic vein Doppler echocardiography in healthy adults
TL;DR: In this article, Doppler ultrasound recordings of blood flow velocity in the superior vena cava were made in 40 healthy adults (aged 22 to 69 years) during both normal respiration and 10 second episodes of apnea.
Patent
Apparatus and method for endovascular device guiding and positioning using physiological parameters
TL;DR: In this paper, an endovascular access and guidance system (100) has an elongate body (105) with a proximal end (110) and a distal end (115); a non-imaging ultrasound transducer (120) on the elongated body configured to provide in vivo non-image based ultrasound information of the vasculature of the patient.
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Fundamentals of impedance cardiography
TL;DR: For the present technique to be placed on a sound scientific base, it is necessary to determine what regions or organs contribute to the impedance change recorded from the thoracic surface, but it shows remarkably good correlation with other cardiac output measurement systems if applied to a select relatively healthy population.
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Comprehensive Doppler assessment of right ventricular diastolic function in cardiac amyloidosis
Allan L. Klein,Liv Hatle,Darryl J. Burstow,Charles P. Taliercio,James B. Seward,Robert A. Kyle,Kent R. Bailey,Morie A. Gertz,A. Jamil Tajik +8 more
TL;DR: Right ventricular diastolic function was abnormal in 41 patients with primary systemic amyloidosis and two-dimensional echocardiographic features of cardiac involvement and the restrictive filling pattern is seen only in the advanced stages of the disease.
References
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Journal ArticleDOI
Blood flow measured by Doppler frequency shift of back-scattered ultrasound.
TL;DR: The Doppler shift of ultrasound, scattered from moving elements within a stream of blood, is related to the velocity of blood flow and a flowmeter based on this principle was used to record blood flow through intact vessels in dogs.
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Velocity of Blood Flow in Normal Human Venae Cavae
TL;DR: Marked respiratory velocity variations with inspiratory increases occurred during and after exercise, and reduction of flow velocity in abdominal breathing and the Muller maneuver is consistent with the formation of a local area of inferior vena caval collapse at the diaphragm.
Journal Article
Application of a transcutaneous Doppler flowmeter in evaluation of occlusive arterial disease.
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A Catheter Tip Electromagnetic Velocity Probe and its Evaluation
C. J. Mills,J. P. Shillingford +1 more
TL;DR: A catheter tip instrument for measuring blood velocities and based on the principle of electromagnetic induction has been constructed and its performance evaluated as mentioned in this paper, which has shown it to be capable of reproducing velocity waveforms accurately in various circumstances.
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