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• In several investigations in the past, Wetterer and Pieper connected a sinusoidal piston pump to the arterial system of intact anesthetized dogs in order to produce slow oscillations of the mean arterial pressure upon which the arterial pressure pulsation was superimposed. Simultaneous measurements of various parameters permitted the calculation of the(More)
Experiments were performed on eight anesthetized dogs to study the response of the characteristic impedance (Zc) of the main pulmonary artery to changes in circulating blood volume. Pressure and flow were measured in the proximal main pulmonary artery under control conditions, after hemorrhage (-15% of the estimated blood volume), again under control(More)
To study the anatomic relationships and varieties of anterior impingement of the rotator cuff, an examination of 124 shoulder joints from 62 embalmed cadavers was performed. The distance between the lesser tuberosity and the coracoid was measured at different degrees of humeral rotation in the shoulder joint. Neither lateral differences nor differences with(More)
Experiments on 12 anesthetized dogs were performed to study the effects of changes in blood volume on the pulsatile hemodynamics of the arterial system as seen from its input. Pressure and flow were measured in the ascending aorta under control conditions, after volume expansion with dextran 70 (+30% of estimated blood volume), and after hemorrhage (-15% of(More)
Experiments were performed to study the aortic smooth muscle responses to acute volume loading with dextran 70. To analyze the aortic smooth muscle activity, diastolic aortic pressure was plotted vs. aortic internal diameter to obtain a pressure-diameter relationship (PDR) curve. Aortic pressure and diameter were measured by means of a catheter-tip(More)