20 Jul 2017

July 20, 2017

Written by REBEL EM
Background: Perichondritis is an infection of the connective tissue of the ear that covers the cartilaginous auricle or pinna, excluding the lobule (Caruso 2014). The term perichondritis is itself a misnomer, as the cartilage is almost always involved, with abscess formation and cavitation (Prasad 2007). Perichondritis can be a devastating disease, and if left improperly treated, the infection can worsen into a liquefying chondritis resulting in disfigurement and/or loss of the external ear (Noel 1989) (Martin 1976). Unfortunately, misdiagnosis and mistreatment is common. In one small retrospective review, the overwhelming majority of patients presenting to a large general hospital were prescribed antibiotics without appropriate antimicrobial coverage, resulting in a significant number of patients developing chondral deformities or “cauliflower ear” (Liu 2013).
Medical Categories: Infectious Disease
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8 Jun 2017

June 8, 2017

Written by REBEL EM

Background: Cellulitis is a common emergency department (ED) presentation. Despite the fact that diagnosis remains relatively straight forward, complexity remains in management in terms of the causative agent and appropriate antibiotic regimen. Though beta-hemolytic Streptococci are the most common causative agents there is increasing prevalence of community acquired methicillin-resistant Staphylococcus aureus (MRSA). Cephalexin has long been used to treat uncomplicated cellulitis because of it’s activity against streptococci and methicillin-sensitive S. aureus (MSSA). Despite the current Infectious Disease Society of America (IDSA) recommendations against routine coverage of MRSA, trimethoprim-sulfamethoxazole (TMP-SMX) is often added to cephalexin (Stephens 2014). While there are other single options for coverage, they either have suboptimal MRSA coverage (i.e. clindamycin and doxycycline) or are more expensive (i.e. linezolid). Without reliable ways to determine which patients need MRSA coverage, it is unclear which patients with uncomplicated cellulitis need to be discharged with MRSA coverage and which will do fine with a single agent.

Medical Categories: Infectious Disease
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5 Jun 2017

June 5, 2017

Written by REBEL EM

The Background: Nearly 50% of patients in the U.S. with cirrhotic liver disease develop ascites over a 10-year period of observation, placing them at risk for developing spontaneous bacterial peritonitis (SBP) (Runyon 2012). It is estimated that 12-25% of patients with ascites in the ED will have spontaneous bacterial peritonitis (SBP) but the classic triad of fever, abdominal pain, and worsening ascites is often absent (Borzio 2001)(Runyon 1988). With a mortality rate approaching 40%, rapid diagnosis and evidence-based treatment is critical in the management of patients presenting with SBP (Salerno 2013).

SBP is diagnosed via cell count and differential of ascitic fluid obtained by paracentesis demonstrating an elevated polymorphonuclear leukocyte (PMN) count (≥ 250 cells/mm3). Treatment focuses on appropriate antibiotic therapy. A third-generation cephalosporin is the treatment of choice as they are typically effective in covering the three most common isolates from infected ascitic fluid: Escherichia coli, Klebsiella pneumonia, and Streptococcus pneumonia (Runyon 2012). Intravenous albumin administration is often added to the management of these patients but the utility for improving morbidity and mortality is questionable. The benefit of albumin infusion in SBP is not entirely known, although multiple possible mechanisms have been identified. Albumin has been demonstrated to mitigate endotoxemia, block lipopolysaccharide-stimulated neutrophil activity, and modulate nitric oxide activity, mitigating systemic vasodilation and capillary leak (Salerno 2013).

Medical Categories: Infectious Disease
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1 May 2017

May 1, 2017

Written by REBEL Cast
Background: Just a few months ago the surviving sepsis campaign published their international guidelines for management of sepsis and septic shock [1].  There has been a lot of talk in the FOAM world about sepsis 3.0 and this is the first update since the introduction. This was a 67 page document that made a total of 93 statements on the early management and resuscitation of patients with sepsis or septic shock.  1/3 of the statements were strong recommendations and just over 1/3 were weak recommendations. Instead of going through every component of this document, we thought we would discuss one of the potentially biggest components of sepsis care that  would affect clinical practice for those of us on the front lines. One of the main reasons we have seen a mortality decrease in sepsis overtime is due to the proactive nature health care professionals have taken in sepsis management.  The so called ABC’s of sepsis management: Early identification, Early fluids, and Early antibiotics. One of the biggest components of this is early identification of these patients.
Medical Categories: Infectious Disease
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REBEL Review 80: Oseltamivir (Tamiflu) for Treatment of Influenza

Created April 10, 2017 | Infectious Disease | DOWNLOAD