The adrenal cortex function is essential for life. (True or False)

A. Urine output <30mL/hour: Oliguria is defined as a markedly reduced urine output, typically less than 400 mL per day or less than 30 mL per hour. It indicates decreased kidney function or perfusion and is common in progressive renal conditions.

B. Absence of urine output: This describes anuria, not oliguria. Anuria is defined as urine output less than 100 mL per day and signifies severe kidney failure or complete urinary tract obstruction.

C. Increased urine output: This describes polyuria, often associated with conditions like uncontrolled diabetes mellitus or diabetes insipidus, not oliguria.

D. Urine output >100mL/hour: This is well above the threshold for oliguria and may suggest diuresis or overhydration. It does not meet the criteria for decreased kidney output.

A. Traveling abroad recently: While international travel can expose individuals to infectious diseases, it is not the most concerning factor in this case compared to his communal living situation.

B. Living in a large, crowded communal setting: Crowded living conditions significantly increase the risk of meningitis transmission, especially for bacterial types like Neisseria meningitidis which spread via respiratory droplets.

C. An infection of the brain tissue, typically due to a virus or bacteria: This describes encephalitis, not meningitis. Meningitis affects the protective membranes, not the brain tissue itself.

D. An inflammation of the protective membranes around the brain and spinal cord (meninges): This is the correct definition of meningitis and is the pathological hallmark of the disease.

E. Having an allergy to medications: Having an allergy to medications is important for safe patient care and medication administration, but it is not a risk factor for acquiring meningitis.

F. An inflammation of the lungs caused by a viral or bacterial infection: This describes pneumonia, not meningitis. It is unrelated to the direct cause of meningitis.