bacterial infection of cardiovascular system by dr. humodi a. saeed associate prof. of medical...
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Bacterial Infection of Cardiovascular system
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Dr. Humodi A. SaeedDr. Humodi A. SaeedAssociate Prof. of Medical MicrobiologyAssociate Prof. of Medical MicrobiologyCollege of Medical Laboratory ScienceCollege of Medical Laboratory ScienceSudan University of Science and TechnologySudan University of Science and TechnologyE mail address: [email protected] mail address: [email protected]
Cardiovascular system (CVS)
Cardiovascular system (CVS)
What is Cardiovascular system?
Cardiovascular system (CVS)
Definition
Cardiovascular system (circulatory system), defined as a group of organs that transport blood and the
substances it carries to and from all parts of the body.
Bacterial Infection of CVS
Components?
Cardiovascular system (CVS)
Components
The cardiovascular (circulatory) system consists of :
1 .The heart 2 .Blood vessels .
Bacterial Infection of CVS
Functions?
Cardiovascular system (CVS)
Functions
1 .Circulates blood throughout the body .2 .Delivers nutrients and other essential materials to
cells .
3. Removes waste products.
Cardiovascular system (CVS)
Function
(It serves as the body's transportation system.)
Bacterial Infection of CVS
Diseases?
Cardiovascular system (CVS)
Cardiovascular diseases
Disease of the heart and blood vessels.
Cardiovascular system (CVS)
Bacteraemia
Bacterial Infection of CVS
1 .Bacteraemia• Presence of organisms not permanent.• Organisms not multiplying.• Patient asymptomatic.
• Important means of spread for other diseases.
Bacterial Infection of CVS
Causes of Bacteraemia • Group B streptococcus • Escherichia coli (and other enteric Gram negative
bacilli) • Listeria monocytogenes • Streptococcus pneumoniae • Haemophilus influenzae • Staphylococcus aureus • Neisseria meningitides • Salmonella spp
Bacterial Infection of CVS
Causes of Bacteraemia (cont.)
• Streptococcus pneumoniae
• Group B streptococcus
• Neisseria meningitides
• Salmonella spp
• Haemophilus influenzae
• Listeria monocytogenes
Bacterial Infection of CVS
Causes of Bacteraemia (cont.)
• Streptococcus pneumoniae
• Haemophilus influenzae
• Neisseria meningitides
• Salmonella spp
Cardiovascular system (CVS)
Septicaemia
Cardiovascular system (CVS)
2. Septicaemia Septicaemia is a potentially life-threatening infection
in which large amounts of multiplying bacteria are present in the blood. It is commonly referred to as blood poisoning.
Bacterial Infection of CVS
Septicaemia
• Organisms actively multiplying.• Patient acutely symptomatic.
Bacterial Infection of CVS
Causes Septicaemia usually arises as a result of localised infection in the body. The primary site of infection may occur in the:
• Respiratory system• Skin• The gastrointestinal system• Genitourinary system.
Bacteria usually spill over from the primary infection site into the blood and are carried throughout the body thereby spreading infection to various systems of the body.
Bacterial Infection of CVS
Symptoms1. Fevers
2. Chills
3. Rash
Bacterial Infection of CVS
Mortality1. Very high even with prompt therapy.
2. Gram positive 10 – 20%
3. Gram negatuve 25 – 40%
4. Septic shock 40 – 90%
Bacterial Infection of CVS
Endocarditis
Bacterial Infection of CVS
3 .Endocarditis
Viridans Streptococci
Streptococcus pneumoniae
Staphylococcus aureus
CoN Staphylococci Stomatococcus species
Enterococcus species
Bacterial Infection of CVS
3. Endocarditis (Cont.)HACEK group Bartonella species Rickettsia burnetii
Brucella species Erysipelothrix rhusiopathiae Enterobacteriaceae
Ps. aeruginosa, Corynebacterium sp. Propionibacterium sp.
Bacterial Infection of CVS
Myocarditis
Bacterial Infection of CVS
4. Myocarditis
Cory.diphtheriae
Clostridium perfringens
group A Streptococcus Borrelia burgdorferi Neisseria meningitidis Staphylococcus aureus
Bacterial Infection of CVS
4. Myocarditis (Cont.)Mycoplasma pneumoniae
Chlamydia pneumoniae
Chlamydia psittaci
Rickettsia rickettsii
Rickettsia tsutsugamushi
Bacterial Infection of CVS
Pericarditis
Bacterial Infection of CVS
5. PericarditisStreptococcus pneumoniae
Staphylococcus aureus
Neisseria gonorrhoeae
Neisseria meningitidis
Mycoplasma pneumoniae
Mycobacterium tuberculosis
Bacterial Infection of CVSLab. Diagnosis
Specimen
Blood
Bacterial Infection of CVSLab. Diagnosis
Essential points1. Multiple collections
(3 in 24 hours)
2. Maximum volume
(do not overfill!)
3. Aseptic collection / handling technique is CRITICAL
Bacterial Infection of CVS Lab. Diagnosis
Microscopy
Gram stain
To detect:
1. Gram positive
2. Gram negative
Bacterial Infection of CVS Lab. Diagnosis
Blood culture:To isolate the causative
agent (s).
Bacterial Infection of CVS
Treatment
After performing sensitivity test.
Thank you