Cheek and upper chest congestion are the main pathological changes of renal syndrome hemorrhagic fever, which is clinically characterized by fever, hypotension, hemorrhage, and renal damage. So how is the diagnosis of cheek and upper chest congestion made? Let’s take a look below. The oliguric phase often overlaps with the hypotensive shock phase without clear boundaries. Oliguria can appear in the middle and late stages of hypotension, and some people go directly from the febrile phase to the oliguric phase and show fever. The overlap of hypotension and oliguric phase is often a heavy case. The appearance and duration of the oliguric phase: generally on the 5th-8th day of the course of the disease, or on the 3rd day of the disease in early cases and on the 10th day of the disease in late cases, lasting 2-5 days. 2, intensity of oliguria: 24h urine volume <1000ml is the tendency of oliguria, <500ml is oliguria, <50ml is anuria, some cases of oliguria is not obvious, but the presence of azotemia, called "non-oliguric renal failure". 3, clinical manifestations of oliguric phase: due to renal failure, renal excretion dysfunction, retention of large amounts of metabolites and fluids in the body, disturbance of electrolyte balance, azotemia and/or uremia, acidosis, hypervolemic syndrome, such as anorexia and nausea, abdominal distension, dizziness and headache, large bruises on the skin, deep and rapid breathing, weakness of myocardial contraction, decreased blood pressure, headache and swelling when hypervolemic, body toxicity V filling, pulse The incubation period is 5 to 46 days. The incubation period is 5 to 46 days, usually 1 to 2 weeks. The typical manifestations of the disease include three main types of symptoms: fever, hemorrhage and renal damage, as well as a five-stage clinical course of fever, low pressure, oliguria, polyuria and recovery period. In most cases, the clinical manifestations are not typical, or one phase is prominent, or one phase is not obvious and "transitional" phenomenon, or the first two or three phases overlap.