Search results
Results From The WOW.Com Content Network
Less commonly reported bacteria responsible for so called "culture negative endocarditis" include Bartonella, Chlamydia psittaci, and Coxiella. [30] Such bacteria can be identified by serology, culture of the excised valve tissue, sputum, pleural fluid, and emboli, and by polymerase chain reaction or sequencing of bacterial 16S ribosomal RNA.
It is one of the HACEK group of infections which are a cause of culture-negative endocarditis. In general, the HACEK organisms are responsible for approximately 3% of all cases of infective endocarditis (IE). IE due to E. corrodens is usually a result of poor oral hygiene and or periodontal infection.
Infective endocarditis is an infection of the inner surface of the heart, usually the valves. [3] Symptoms may include fever, small areas of bleeding into the skin, heart murmur, feeling tired, and low red blood cells. [3] Complications may include valvular insufficiency, heart failure, stroke, and kidney failure. [4] [3]
The HACEK organisms are a group of fastidious Gram-negative bacteria that are an unusual cause of infective endocarditis, which is an inflammation of the heart due to bacterial infection. [1] HACEK is an abbreviation of the initials of the genera of this group of bacteria: Haemophilus , Aggregatibacter (previously Actinobacillus ...
Other strains of streptococci can cause subacute endocarditis as well. These include streptococcus intermedius, which can cause acute or subacute infection (about 15% of cases pertaining to infective endocarditis). [7] Enterococci from urinary tract infections and coagulase negative staphylococci can also be causative agents. [5]
One notable exception is in cases of endocarditis (heart valve infection), which can be more refractory to treatment. K. kingae is the fifth member of the HACEK group of fastidious Gram-negative bacteria that cause endocarditis. Routine laboratory tests may be normal because the organism is difficult to culture.
Fastidious Gram-negative bacteria such as Cardiobacterium hominis along with Eikenella corrodens and Kingella kingae mainly inhabiting in the oral and upper respiratory tract in humans are responsible for 1–3% of infective endocarditis. [18] Treatment of the disease involves third-generation cephalosporin with more than 80-90% success rate. [18]
Streptococcus bovis is a group of strains of Gram-positive bacteria, originally described as a species, [5] [6] that in humans is associated with urinary tract infections, endocarditis, sepsis, [7] and colorectal cancer. [8] S. bovis is commonly found in the alimentary tract of cattle, sheep, and other ruminants, [9] and may cause ruminal acidosis.