medullary washout # Hyperthyroidism promotes diuresis by increasing sensitivity to catecholamines, increasing renal medullary blood flow and medullary washout. Significant morbidity and mortality can accompany ARF. Central Diabetes Insipidus The hypothesis of a ‘washout’ of medullary solutes during increased medullary blood flow (MBF) has been re-evaluated. Preoperative Differential Diagnosis of Canine Adrenal Tumors … The five days of decreased water intake should have corrected for any medullary washout, exceeding the number of days recommended during a water deprivation test . Dye injected through the catheter to assess its position filled the renal cortex evenly in the normal dog, but in dogs with heart failure-despite a normal total renal blood flow-patchy outer cortical filling was evident. Free Water Excretion and Washout Concentrated urine: USG >1.030 (dog) or >1.035 (cat) Excretion of urine that is concentrated like this indicates that significant modification of glomerular filtrate (which has specific gravity of 1.008 to 1.012) has occurred by means of active resorptive processes in the renal tubules. “Triple-H” therapy for cerebral vasospasm following subarachnoid ... These findings indicate that in fistula dogs enhanced medullary sodium reabsorption is associated with decreased PPF and stimulation of the renin-angiotensin and adrenergic nervous system. Self Correcting DI or Medullary Washout