Rocky Mountain Spotted Fever (RMSF): The Daily PANCE Blueprint

Rocky Mountain Spotted Fever (RMSF): The Daily PANCE Blueprint

A 54-year-old woman presents to the emergency department with a 5-day history of high fever, severe headache, muscle aches, and a maculopapular rash that began on her wrists and ankles and has now spread to her trunk. She recently returned from a hiking trip in the Appalachian Mountains. Her husband reports that she has become increasingly confused over the past two days. On examination, her temperature is 39.5°C (103.1°F), blood pressure is 100/60 mm Hg, pulse is 110/min, and respiratory rate is 22/min. Physical examination reveals a diffuse maculopapular rash on her extremities and trunk, including the palms and soles. What is the most important step in the management of this patient?

A. Start intravenous ceftriaxone
B. Begin oral doxycycline immediately
C. Perform a lumbar puncture
D. Order blood cultures and wait for results before starting treatment
E. Administer intravenous acyclovir

Answer and topic summary

The answer is Correct Answer: B. Begin oral doxycycline immediately

The patient’s presentation is highly suggestive of Rocky Mountain Spotted Fever (RMSF), a tick-borne illness caused by Rickettsia rickettsii. The most critical step in management is to start doxycycline immediately, even before confirmatory test results are available. RMSF can progress rapidly and become life-threatening if not treated promptly. Doxycycline is the drug of choice for all ages and should be initiated as soon as RMSF is suspected, based on clinical presentation and epidemiological factors.

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Smarty PANCE Content Blueprint Review:

Covered under ⇒ PANCE Blueprint Infectious Disease ⇒ Bacterial Disease ⇒ Rocky Mountain spotted fever

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