The measurement of relaxation pressures and other static intrapulmonary pressures (Rahn, Otis, Chadwick and Fenn, 1946) has been so useful in analyzing the mechanics of respiration and especially of pressure breathing that it has seemed worth while to make simultaneous measurements of peripheral venous pressure and relaxation pressure at various lung volumes as an aid to understanding the relat...

Recent studies in humans have suggested sex differences in venous compliance of the lower limb, with lower compliance in women. Capillary fluid filtration could, however, be a confounder in the evaluation of venous compliance. The venous capacitance and capillary filtration response in the calves of 12 women (23.2 +/- 0.5 years) and 16 men (22.9 +/- 0.5 years) were studied during 8 min lower bo...

BACKGROUND During the perioperative period an adequate intravascular volume must be maintained. Current recommendations overestimate perioperative volume requirements. AIM To compare perioperative volume administration using standard monitoring methods or guided by left ventricular filling parameters. MATERIAL AND METHODS Twenty-four patients subjected to colon resection were randomized to ...

Material and Resources A descriptive, retrospective study. We describe the results of a small series of potential donors (including older than 70 years) treated in single tertiary level center, from January to September 2013, in accordance with a strict protocol of protective ventilation, recruitment maneuvers, postural changes and negative fluid balance. The collected variables were: Ventilato...

Abdominal counterpulsation added to standard cardiopulmonary resuscitation improves blood flow in animal models when compared to chest compressions alone. Similar effects can be demonstrated in analog and digital computer models of the circulation. The technique generates both central aortic and central venous pressure pulses, and successful application of the method depends on maximizing the f...

HANSON, KENNETH M., AND PAUL C. JOHNSON. 4kzzl control of hepatic arterial and portal uenous jaw in the dog. Am. J. Physiol. 211(3): 712-720. I g66.-Hemodynamic studies were made in over IOO experiments on the denervated, autoperfused, dog liver in situ. Electromagnetic flowmeters were used. Data\ are given on pressure-flow relationships in both vascular circuits, with and without simultaneous ...

Guidelines can influence physicians to act against their better judgement. For example, while only 47% of surveyed intensivists believed that central venous pressure should guide resuscitation, 86% used it because of the SSC recommendation [2]. Protocols may improve care, but what should one do when audited patient outcomes are already better than those achieved by guideline interventions – suc...