CHEST, 74: 6, DECEMBER, 1978 pulmonary capillary wedge pressure to normal by increasing extramural pressure. So for us, therapy with IPPV and PEEP usually influences the pulmonary capillary wedge pressure, especially when the central blood volume varies from normal; thus, the interest and limits of the “weaning test” are clearly defined. In some cases, therapy with artificial ventilation does n...

CHEST, 74: 6, DECEMBER, 1978 pulmonary capillary wedge pressure to normal by increasing extramural pressure. So for us, therapy with IPPV and PEEP usually influences the pulmonary capillary wedge pressure, especially when the central blood volume varies from normal; thus, the interest and limits of the “weaning test” are clearly defined. In some cases, therapy with artificial ventilation does n...

Based on the analysis of seepage mechanism of fracturing wells in low permeability reservoir, this paper establishes the capacity model of the vertical fractured well production under the factors of Start-up pressure gradient, pressure sensitive effect and the artificial fracture length. The numerical simulation is compiled and software calculates the capacity model by using numerical simulatio...

In cats anesthetized with pentobarbital, 188 direct microvascular pressure and diameter measurements were made of the tenuissimus muscle. The microvascular pressure in arterioles of 70 mum in diameter or larger was proportional to the systemic arterial pressure (PA). The arterioles with diameter-s ranging from 35 to 20 mum have been shown to be the principa-l source of arteriolar resistance reg...

introduction pulmonary hypertension is common among patients with hyperthyroidism, and graves’ disease constitutes the most common cause of thyrotoxicosis. case presentation we report the case of a female patient admitted to the cardiology department with shortness of breath and pretibial myxedema. the diagnostic work-up revealed combined pre- and post-capillary pulmonary hypertension due to gr...

To determine how fracture–vuggy structure, pressure, and injection–production mode influence displacement efficiency in the water flooding process in fracture–vuggy reservoirs, two types of models were built based on the characteristic of such reservoir: two fracture models with different fracture apertures and two fracture– vuggy models with different sizes of vugs. A series of twophase fluid ...

The coronary capillary ow is analyzed theoretically based on continuum mechanics. The capillary is a long, elastic and permeable vessel loaded externally by tissue pressure. It is subject to possible periodic length changes, together with adjacent myocites. Capillary ow is driven by arteriolar-venular pressure di erence. Ultra ltration, due to transmural hydrostatic and osmotic gradients is inc...

BACKGROUND.: Hypertrophic cardiomyopathy (HCM) is characterized by asymmetric LV hypertrophy (LVH) and impairment in diastolic function. We assess the relationship between LVH and invasive indexes of diastolic function. METHODS.: 21 HCM patients underwent cardiac catheterization to assess pulmonary capillary wedge pressure, LV end-diastolic pressure (measured by microtip catheters), and LV vol...

Factors determining the symptoms of breathlessness and fatigue in patients with congestive heart failure were investigated by comparing the response to slow and fast exercise. Symptom limited oxygen consumption (maximal); minute ventilation, mean pulmonary capillary wedge pressure; and arterial blood gases, pH, and lactate concentrations were measured during treadmill exercise using a slow prot...

GAAR, KERMIT A., JR.,* AUBREY E. TAYLOR, L. JENNINGS OWENS, AND ARTHUR C. GUYTON. Pulmonary capillary pressure and jltration coeficient in the isolated perfused lung. Am. J. Physiol. 213(4): 910-914. 1967.-An “isogravimetric” method was used to estimate the pulmonary capillary pressure, to determine the arterial and venous resistances in the isolated perfused lobe of a dog’s lung, and to determ...