Faget's Sign & Liebermeister's Rule
Pulse-Temperature ...
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Description

Faget's Sign & Liebermeister's Rule

Pulse-Temperature Dissociation

EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM

INFECTIOUS CAUSES

 • Legionella

 • Psittacosis

 • Q Fever

 • Typhoid Fever

 • Typhus

 • Babesiosis

 • Malaria

 • Leptospirosis

 • Yellow Fever

 • Viral Hemorrhagic Fevers

 • Rocky Mountain Spotted

 • Fever

OTHER CAUSES

 • Beta Blockers

 • CNS Lesions

 • Lymphomas

 • Factitious Fever

 • Drug Fever

CLINICAL UTILITY

1. Legionella

2. Chlamydia

3. Typhoid Fever (S. typhi)

4. Dengue Fever

NOTE:

There is limited predictive value in pulse-temperature dissociation and the most likely infection. However! There are specific cases where it can help hone your differential.



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Contributed by

Joshua L. Morris
@JoshMedPeds
PGY-1 @ UK Healthcare | MD-MA Design in Healthcare from Dell Med
@JoshMedPeds https://twitter.com/JoshMedPeds - https://www.infinitecatalyst.com/home/providers
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