What is febrile nephritic colic/obstructive pyelonephritis?

This is a medical and surgical emergency. It corresponds to infected urine upstream of an obstructive calculus of the upper urinary tract and infection of the renal parenchyma. - The main clinical signs are: • Fever> 38 ° C. • Chills. • Skin marbrures, hemodynamic instability. • Positive urine strip (leucocytes +, nitrite +, + bacteria).