Faget sign
Encyclopedia
In medicine
, the Faget sign is the unusual constellation of fever
and bradycardia
(a slow pulse
). It is often seen in yellow fever
.
Fever is usually accompanied by tachycardia
(a fast pulse), an association known by the eponym
Liebermeister's rule
.
Faget sign is also seen in:
It is named after Jean Charles Faget
, who characterized it in 1859.
Medicine
Medicine is the science and art of healing. It encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness....
, the Faget sign is the unusual constellation of fever
Fever
Fever is a common medical sign characterized by an elevation of temperature above the normal range of due to an increase in the body temperature regulatory set-point. This increase in set-point triggers increased muscle tone and shivering.As a person's temperature increases, there is, in...
and bradycardia
Bradycardia
Bradycardia , in the context of adult medicine, is the resting heart rate of under 60 beats per minute, though it is seldom symptomatic until the rate drops below 50 beat/min. It may cause cardiac arrest in some patients, because those with bradycardia may not be pumping enough oxygen to their heart...
(a slow pulse
Pulse
In medicine, one's pulse represents the tactile arterial palpation of the heartbeat by trained fingertips. The pulse may be palpated in any place that allows an artery to be compressed against a bone, such as at the neck , at the wrist , behind the knee , on the inside of the elbow , and near the...
). It is often seen in yellow fever
Yellow fever
Yellow fever is an acute viral hemorrhagic disease. The virus is a 40 to 50 nm enveloped RNA virus with positive sense of the Flaviviridae family....
.
Fever is usually accompanied by tachycardia
Tachycardia
Tachycardia comes from the Greek words tachys and kardia . Tachycardia typically refers to a heart rate that exceeds the normal range for a resting heart rate...
(a fast pulse), an association known by the eponym
Eponym
An eponym is the name of a person or thing, whether real or fictitious, after which a particular place, tribe, era, discovery, or other item is named or thought to be named...
Liebermeister's rule
Liebermeister's rule
Liebermeister's rule concerns the increment ratio between and adult individual's cardiac frequency and temperature when in fever. Each Celsius grade of body temperature increment corresponds to an 8 beats per minute in cardiac frequency...
.
Faget sign is also seen in:
- Typhoid FeverTyphoid feverTyphoid fever, also known as Typhoid, is a common worldwide bacterial disease, transmitted by the ingestion of food or water contaminated with the feces of an infected person, which contain the bacterium Salmonella enterica, serovar Typhi...
- tularaemia
- brucellosisBrucellosisBrucellosis, also called Bang's disease, Crimean fever, Gibraltar fever, Malta fever, Maltese fever, Mediterranean fever, rock fever, or undulant fever, is a highly contagious zoonosis caused by ingestion of unsterilized milk or meat from infected animals or close contact with their secretions...
- Colorado tick feverColorado tick feverColorado Tick Fever is an obtuse viral infection transmitted from the bite of an infected tick...
- Some pneumoniaPneumoniaPneumonia is an inflammatory condition of the lung—especially affecting the microscopic air sacs —associated with fever, chest symptoms, and a lack of air space on a chest X-ray. Pneumonia is typically caused by an infection but there are a number of other causes...
s - LegionellaLegionellaLegionella is a pathogenic Gram negative bacterium, including species that cause legionellosis or Legionnaires' disease, most notably L. pneumophila. It may be readily visualized with a silver stain....
pneumonia and MycoplasmaMycoplasmaMycoplasma refers to a genus of bacteria that lack a cell wall. Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis. They can be parasitic or saprotrophic. Several species are pathogenic in humans,...
pneumonia - Drug Fever
It is named after Jean Charles Faget
Jean Charles Faget
Jean Charles Faget was a physician born on June 26, 1818 in New Orleans. He is best known for the Faget sign—a medical sign that is the unusual combination of fever and bradycardia. The sign is an important diagnostic symptom of yellow fever.-Personal life:...
, who characterized it in 1859.