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Clinical Cases in Tropical Medicine E-Book
Camilla Rothe
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eBook - ePub
Clinical Cases in Tropical Medicine E-Book
Camilla Rothe
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Über dieses Buch
Using an easily accessible, highly templated format, Clinical Cases in Tropical Medicine, 2nd Edition, provides more than 100 realistic scenarios for tropical infectious diseases. Full-color photographs and maps, a convenient question-and-answer presentation, and succinct summary boxes help you identify and understand the tropical diseases you're likely to encounter. This up-to-date 2nd Edition is an excellent resource and study tool for infectious diseases fellows, doctors preparing for exams in tropical medicine, primary care doctors with patients who are global travelers, and global health nurses and practitioners alike.
- Offers realistic scenarios for encountering patients in rural, resource-poor settings, presenting cases as "unknowns, " just as in a real clinic or emergency situation.
- Covers newly emerging diseases such as Zika virus, severe fever with thrombocytopenia syndrome (SFTS), and knowlesi malaria.
- Features topics in migrant medicine of particular importance to clinicians in non-tropical countries, including louse-borne-relapsing fever, spinal brucellosis, and hyperreactive malarial splenomegaly.
- Includes "classic" tropical diseases such as African trypanosomiasis, chagas, leprosy, and yaws.
- Reflects the use of novel diagnostics used in resource-poor settings, as well as developing drug resistance in relevant cases.
- Provides a useful index and map that organize cases geographically, for a targeted approach to study.
- Serves as a companion to Manson's Tropical Diseases, with a reading list at the end of each case referring to the corresponding chapter in the larger text.
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Information
1: A 20-Year-Old Woman from Sudan With Fever, Haemorrhage and Shock
Daniel G. Bausch
Clinical Presentation
History
A 20-year-old housewife presents to a hospital in northern Uganda with a 2-day history of fever, severe asthenia, chest and abdominal pain, nausea, vomiting, diarrhoea and slight non-productive cough. The patient is a Sudanese refugee living in a camp in the region. She denies any contact with sick people.
Clinical Findings
The patient is prostrate and semiconscious on admission. Vital signs: temperature 39.6°C, (103.3°F) blood pressure 90/60 mmHg, pulse 90 bpm, and respiratory rate 24 cycles per minute. Physical examination revealed abdominal tenderness, especially in the right upper quadrant, hepatosplenomegaly and bleeding from the gums. The lungs were clear. No rash or lymphadenopathy was noted.
Questions
- 1. Is the patient’s history and clinical presentation consistent with a haemorrhagic fever (HF) syndrome?
- 2. What degree of nursing precautions need to be implemented?
Discussion
This patient was seen during an outbreak of Ebola virus disease in northern Uganda, so the diagnosis was strongly suspected. She was admitted to the isolation ward that had been established as part of the international outbreak response. No clinical laboratory data were available because, for biosafety reasons, such testing was suspended. Although it is a reasonable precaution, the suspension of routine testing often causes difficulty in ruling out the many other febrile syndromes in the differential diagnosis and increases mortality from other non-Ebola disease. Fortunately, many clinical laboratory tests can now be safely performed with point-of-care instruments, often brought into a specialized laboratory in the isolation ward, as long as the laboratory personnel are properly trained and equipped.
Answer to Question 1
Is the Patient’s History and Clinical Presentation Consistent with an HF Syndrome?
The clinical presentation is indeed one of classic viral HF. However, most times the diagnosis is not so easy. Although some patients, such as this one, do progress to the classic syndrome with haemorrhage, multiple organ dysfunction syndrome and shock, haemorrhage is not invariably seen (and may even be noted in only a minority of cases with some virus species), and severe and fatal disease may still occur in its absence. The clinical presentation of viral HF is often very non-specific. Furthermore, haemorrhage may be seen in numerous other syndromes, such as complicated malaria, typhoid fever, bacterial gastroenteritis and leptospirosis, which are the primary differential diagnoses, depending on the region.
Answer to Question 2
What Degree of Nursing Precautions Needs to be Implemented?
The spread of Ebola virus between humans is through direct contact with blood or bodily fluids. Secondary attack rates are generally 15% to 20% during outbreaks in Africa, and much lower if proper universal precautions are maintained. Specialized viral HF precautions and personal protective equipment are warranted when there is a confirmed case or high index of suspicion, such as in this case.
The Case Continued. . .
Intravenous fluids, broad-spectrum antibiotics and analgesics were begun on admission. Nevertheless, the patient’s condition rapidly worsened, with subconjunctival haemorrhage, copious bleeding from the mouth, nose and rectum (Figs. 1.1 and 1.2), dyspnoea and hypothermic shock (temperature 36.0°C, blood pressure = unreadable, pulse 150 bpm, respiratory rate 36 cycles per minute). She became comatose and died approximately 24 hours after admission. Laboratory testing at a specialized laboratory established as part of the outbreak response showed positive ELISA antigen and PCR tests for Ebola virus and a negative result for ELISA IgG antibody, confirming the diagnosis of Ebola virus disease.