Digitalis directly decreases sinus automaticity only at high, toxic, concentrations.
No , digitalis is a venoconstrictor. Return to Item III and make another selection. Item Xa Correct , at capillary pressure above 20 mmHg, hydrostatic pressure in the capillary begins to exceed plasma oncotic pressure and fluid is forced from the vasculature into the lungs. Item XIIa True , increased cardiac index should improve skeletal muscle perfusion and decrease fatigue. You may have forgotten, however, that decreased pulmonary capillary pressure will produce an added benefit of decreased congestive symptoms.