247 Amebiasis and Infection with Free-Living Amebas Rosa M. Andrade, Sharon L. Reed AMEBIASIS DEFINITION Amebiasis is an infection with the intestinal protozoan Entamoeba histolytica. About 90% of infections are…
274 The Bradyarrhythmias: Disorders of the Sinoatrial Node David D. Spragg, Gordon F. Tomaselli Electrical activation of the heart normally originates in the sinoatrial (SA) node, the predominant pacemaker. Other…
Molecular Defects More than 90% of patients clinically classified as having MFS by the “Ghent criteria” have a mutation in the gene for fibrillin-1 (FBN1). Mutations in the same gene are…
247 Amebiasis and Infection with Free-Living Amebas Rosa M. Andrade, Sharon L. Reed AMEBIASIS DEFINITION Amebiasis is an infection with the intestinal protozoan Entamoeba histolytica. About 90% of infections are…
236 Histoplasmosis Chadi A. Hage, L. Joseph Wheat ETIOLOGY Histoplasma capsulatum, a thermal dimorphic fungus, is the etiologic agent of histoplasmosis. In most endemic areas, H. capsulatum var. capsulatum is…
274 The Bradyarrhythmias: Disorders of the Sinoatrial Node David D. Spragg, Gordon F. Tomaselli Electrical activation of the heart normally originates in the sinoatrial (SA) node, the predominant pacemaker. Other…
FIGURE 44-3 Acute epiglottitis. In this lateral soft tissue radiograph of the neck, the arrow indicates the enlarged edematous epiglottis (the “thumbprint sign”). TREATMENTEPIGLOTTITIS Security of the airway is always of…
Morganella and Providencia may be extensively resistant to antibiotics. Most isolates are resistant to ampicillin, first-generation cephalosporins, nitrofurantoin, fosfomycin, tigecycline, and the polymyxins; 40% are resistant to fluoroquinolones. Morganella and…
Tularemia is a zoonosis caused by Francisella tularensis. Humans of any age, sex, or race are universally susceptible to this systemic infection. Tularemia is primarily a disease of wild animals…
236 Histoplasmosis Chadi A. Hage, L. Joseph Wheat ETIOLOGY Histoplasma capsulatum, a thermal dimorphic fungus, is the etiologic agent of histoplasmosis. In most endemic areas, H. capsulatum var. capsulatum is…
