Most clinicians focus on postural symptoms as the hallmark of low CSF pressure. However, postural or exertional factors may be noted in conditions other than that of low CSF pressure. Obstructions to ventricular CSF flow, Arnold-Chiari malformation type 1, subdural hematomas, cerebral venous thrombosis, and sinus disease can all lead to positional and postural headache. Reactive brain edema (causing slit ventricles) may displace brain tissue downward, accounting for Arnold-Chiari type 1 findings.
In the pressure-volume loop below, cardiac work is best represented by: the area of the curve the slope of the line from points C to D the distance of the line from points C to D the slope of a line from points A to D .. .. ... .... ... .... .... .... In the pressure-volume loop below, cardiac work is best represented by: the area of the curve Cardiac work is the product of pressure and volume and is linearly related to myocardial oxygen consumption. Cardiac work is best represented by the area of the curve of a pressure-volume loop.
Comments
Post a Comment