Ernest R. Greene

TL;DR: In this article, the authors measured arterial oxygen saturation (SaO2%) and AMS symptom scores in 102 healthy asymptomatic climbers at 4200 m on Denali (Mt. McKinley) prior to their further ascent toward the summit at 6194 m, and on their return from higher altitudes to 4200m.

TL;DR: The faster rise in aortic flow in U with exercise represented an additional volume of blood passing through the aorta compared with S in the first 20s, which must be related to the rapid mobilization of pooled venous blood from the leg veins during U.

TL;DR: In this paper, the authors evaluated the diagnostic accuracy of ultrasonic echo-Doppler velocimetry for the noninvasive diagnosis of renal artery stenosis, which was found if one or more of the following abnormal hemodynamic parameters were found by Doppler velocity: (1) peak blood velocity greater than 100cm · sec -1 in a focal area along the length of a renal artery, (2) absence of blood velocity during diastole, (3) absence and absence of any detectable blood velocity denoting occlusion, or (4)

TL;DR: It is suggested that dual-frequency Duplex scanning with careful sample volume control and Doppler audio spectra/blood velocity waveform analysis can be used to characterize blood flow variables in normal and diseased human renal arteries.

TL;DR: Cardiac catheterization for the assessment of valve lesion severity may be unnecessary in selected patients because Doppler echocardiography has a higher accuracy than clinical evaluation in the detection of significant aortic and mitral valvular heart disease.