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GI Emergencies in Resource Limited Settings

8/23/2017

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Adapted from Dr. Brian D’Cruz’s Grand Round Lecture August 23, 2017
​In addition to classical GI complaints such as giardia, tropical areas have the additional issues such as limited resources, lack of physicians, and potentially poorly treated water resources. Severe malnutrition and dehydration are common complaints.

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Rabies PEP Guidelines

1/30/2017

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Patients with potential rabies exposures are a relatively frequent reason for evaluation in an emergency room. Animal bites account for approximately 1% of all ER visits. Within the District of Columbia, all cats and dogs are required to be vaccinated against rabies and distemper from the age of four months, and after the initial set of shots, must be re vaccinated at least every 3 years. Not all owners may comply or have documentation readily available after an animal bite, and many patients may present after contact with a wild animal.  As many residents may have already found, many tourists present after contact with squirrels, which are not known to carry rabies. 
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DC DOH Vaccination, Bites, & Rabies
Contact Phone: (202) 535-2323
Contact Fax: (202) 442-4817

Office Hours: 
Monday to Friday 8:15 am to 4:45 pm
899 North Capitol Street, NE
Washington DC 20002
https://doh.dc.gov/service/vaccination-bites-and-rabies

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Travelers with Fever

7/13/2016

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Your differential diagnosis for a traveler who presents with an illness should include not only the common causes you see everyday, but also more rare diseases they could have been exposed to during their travels. Keep in mind that the exact etiology may not be identified. Make an accurate travel timeline, and calculate the incubation period for the patient, and avoid artificially narrowing your focus to just tropical diseases. Ask about prophylaxis, immune status, and any higher risk travel history including local food, sexual interactions, and where they stayed during the trip.  

The CDC has a great site to help identify people at risk for certain diseases depending on their travel. 

When concerned, get an infectious disease consult early in the evaluation, and consider admission in patients who have a negative initial thick/thin smear.
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Malaria

Malaria is caused by four different plasmodium parasites, with Plasmodium falciparum being the most predominant cause of mortality. The majority of patients present within four weeks of their return, and 60% are hospitalized with complications including cerebral malaria. Risk factors for severe disease and potential mortality include not taking chemoprophylaxis and a delay in diagnosis. 

There are no pathognomonic historical or physical exam findings, and malaria cannot be ruled out without lab  testing. Classically, malaria presents with cyclical fever, chills, and sweats. The pattern of fever may not be readily apparent, and can be associated with anemia, thrombocytopenia, and CNS dysfunction. Diarrhea or other symptoms should not deter you from testing. Thick and Thin smears are used to diagnose malaria. Thick smears provide a higher sensitivity, while the  thin smear is used to speciate the parasite. The CDC recommends three sets of blood smears to ensure high enough sensitivity to properly diagnose all patients, and higher fevers are not always associated with a higher parasite load. 

The only drug currently licensed in the US is Quinidine, although Artemesinins is currently undergoing trials with the CDC. Quinidine should be used in combination with a second schizonticide, such as doxycycline, tetracycline, or clindamycin. Prior to starting Quinidine evaluate for QRS widening or QTc prolongation as Quinidine can cause widening and prolongation. 
Source: 
​Infectious diseases in critical care medicine
 
 (1-4200-9240-5, 978-1-4200-9240-0), 
3rd ed. / Cunha, Burke A. Informa Healthcare USA, 2010
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This site is independently owned and operated and not affiliated with the George Washington University, George Washington University Hospital, or Medical Faculty Associates. All information on this site is the opinion of the author alone and in no way should be seen to represent the views of the George Washington University, George Washington University Hospital, or Medical Faculty Associates. The information on this page is for personal use only and should not be see as medical advice or used directly for patient care. The author provides no guarantee of the accuracy of the information provided on this page. ​

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  • Clinical
    • Discharge Macros
    • Procedure Macros
    • Exam Macros
    • Pediatric Macros
    • Antibiogram
    • Follow Up
    • 2023 MDM
    • Heart Pathway
    • Jeromy's Macros
  • Education
    • EM Education
    • Critical Care
    • FOAM
  • Orientation
    • Dept Orientation
    • Cerner
    • Dragon
  • Links
    • Clinical Links
    • StatMacros
    • ICU Bootcamp
  • Private
    • MCS
    • GWU Contacts & Map