Monthly Archives: May 2012

Lyme Disease

Posted on May 30, 2012 by

Lyme borreliosis (Lyme disease) is caused by the spirochete Borrelia burgdorferi and is transmitted by a specific Ixodes tick species. It is present in the northeastern, middle/south Atlantic, and north central regions of North America and in countries with moderate … Continue reading →

Posted in Infectious Disease | Leave a comment

Congenital Heart Disease: Fontan Circulation

Posted on May 29, 2012 by

The Fontan procedure refers to any operation that results in the flow of systemic venous blood to the lungs without passing through a ventricle. Once the procedure is complete the systemic venous blood directly enters the pulmonary circulation, placing the … Continue reading →

Posted in Cardiology, Pediatrics, Resus | Leave a comment

Netropenic Fever

Posted on May 23, 2012 by

Neutropenia is common with chemotherapy, nadirs at 7-14 days, and is defined as an absolute neutrophil count (ANC) < 500 cells/μL or < 1,000 cells/μL with a predicted nadir of < 500 cells/μL. Fever in a neutropenic patient is defined as a … Continue reading →

Posted in Infectious Disease, Oncology | Leave a comment

Sickle Cell Disease: Acute Sequestration Crisis

Posted on May 21, 2012 by

Acute sequestration crisis is caused by obstruction of the splenic sinusoids with sickled cells. It most commonly presents in children between 6 months and 2 years although it has been reported into the early twenties. Signs and symptoms include the … Continue reading →

Posted in Hematology, Pediatrics | Leave a comment