TAILIEUCHUNG - Current Medical Diagnosis and Treatment 2007 – 46th Edition II

Tham khảo sách 'current medical diagnosis and treatment 2007 – 46th edition ii', y tế - sức khoẻ, y dược phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | AccessMedicine - Print McGraw-Hill s. ACCESsMedicine __ Print Close Window Note Large images and tables on this page may necessitate printing in landscape mode. Copyright 2006 The McGraw-Hill Companies. All rights reserved. Current Medical Dx Tx Infectious Diseases General Problems Infectious Diseases Introduction Most infections are confined to specific organ systems and many of the important infectious disease pathogens are discussed in chapters dealing with the relevant anatomic areas. This chapter discusses some important general problems related to infectious diseases. Fever of Unknown Origin FUO Essentials of Diagnosis Illness of at least 3 weeks duration. Fever over C on several occasions. Diagnosis has not been made after three outpatient visits or 3 days of hospitalization. General Considerations The intervals specified in the criteria for the diagnosis of FUO are arbitrary ones intended to exclude patients with protracted but self-limited viral illnesses and to allow time for the usual radiographic serologic and cultural studies to be performed. Because of costs of hospitalization and the availability of most screening tests on an outpatient basis the original criterion requiring 1 week of hospitalization has been modified to accept patients in whom a diagnosis has not been made after three outpatient visits or 3 days of hospitalization. Several additional categories of FUO have been added 1 Nosocomial FUO refers to the hospitalized patient with fever of C or higher on several occasions due to a process not present or incubating at the time of admission in whom initial cultures are negative and the diagnosis remains unknown after 3 days of investigation see Nosocomial Infections below . 2 Neutropenic FUO includes patients with fever of C or higher on several occasions with less than 500 neutrophils per microliter in whom initial cultures are negative and the diagnosis remains uncertain after 3 days see Common Symptoms and Infections in the

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