Characteristics of the HACEK group of bacteria include

US Pharm. 2011;36(8):HS-2-HS-8. HACEK is an acronym for a group of organisms that are small, fastidious gram-negative bacilli. 1 The HACEK organisms include Haemophilus species, Aggregatibacter actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae. 2,3 These organisms commonly colonize the human oropharynx as normal, indigenous flora that could cause mouth. 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 The HACEK group of bacteria (Haemophilus species, Aggregatibacter species, Cardiobacterium hominis, Eikenella corrodens, and Kingella species) are a small, heterogeneous group of fastidious, gram-negative bacteria that frequently colonize the oropharynx and have long been recognised as a cause of infective endocarditis (IE)

Background The acronym HACEK refers to a group of fastidious gram-negative coccobacillary organisms. HACEK stands for Haemophilus species, Aggregatibacter species, Cardiobacterium hominis,.. 2. characteristics of mycoplasmas. contain both DNA and RNA they do not have a cell wall they are the smallest free living organisms known. 3. Mycoplasma pneumoniae 62. characteristics of the HACEK group of bacteria include. Require 5-10% CO2 for growth. 64 anaerobic infections differ from aerobic infections in Characteristics of HACEK group of bacteria include: a. assoc. with urinary tract infections b. Gram stain of pleomorphic gram-pos bacilli c. requirement of 5-10% CO2 for growth d. requirement of 42 degrees C for growt The HACEK group of bacteria— Haemophilus parainfluenzae, Aggregatibacter species (Aggregatibacter aphrophilus, Aggregatibacter actinomycetemcomitans, and Aggregatibacter segnis), Cardiobacterium species (Cardiobacterium hominis and Cardiobacterium valvarum), Eikenella corrodens, and Kingella species—are fastidious gram-negative bacilli that are found in the human upper respiratory and genitourinary tracts

The HACEK Group of Gram-Negative Bacill

4.2 HACEK GROUP include characteristics of all HACEK organisms 11-12 4 Flowcharts inserted . IDENTIFICATION OF HAEMOPHILUS SPECIES AND THE HACEK GROUP OF ORGANISMS Issue no: 2 Issue date: 17.04.09 Issued by: Standards Unit, Department for Evaluations, Standards and Training Page 5 of 18. The genera of Haemophilus (except H. influenzae), Aggregatibacter, Cardiobacterium, Eikenella, and Kingella (HACEK) make up a group of gram-negative bacteria which are commensals of the oral cavity and gastrointestinal tract and are known to cause IE [7,8,9]. In a large international study, HACEK bacteria caused 1.3% of IE cases The HACEK organisms are a group of fastidious Gram-negative bacteria that cause a variety of infections, including infective endocarditis HACEK bacteria are part of the normal flora of the body. Flora refers to the normal collection of bacteria throughout the body. Specifically, these HACEK bacteria are usually located in the upper.. Background The group referred to as HACEK consists of Gram-negative bacteria belonging to the genera of Haemophilus (excluding Haemophilus influenzae), Aggregatibacter, Cardiobacterium, Eikenella and Kingella. These bacteria are gram-negative commensals of mainly the oral cavity that on rare occasions cause infective endocarditis (IE) [ 1, 2 ]

HACEK Infections. The HACEK group includes weakly virulent, gram-negative organisms that primarily cause endocarditis. Treatment is with antibiotics. The HACEK group of nonmotile, gram-negative bacilli or coccobacilli contains a number of minimally pathogenic, slow-growing, fastidious genera Haemophilus species apart from the HACEK group include aphrophilus, haemolyticus, parahaemolyticus, which is often the only characteristic used to differentiate the two types of bacteria

HACEK organisms - Wikipedi

HACEK Infective Endocarditis: Characteristics and Outcomes

HACEK Group Infections: Background, Pathophysiology

  1. 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
  2. is, Eikenella corrodens, and Kingella species) are a small, heterogeneous group of fastidious, gram-negative bacteria that frequently colonize the oropharynx and have long been recognised as a cause of infective endocarditis (IE)
  3. us, Eikenella corrodens, and Kingella species. These organisms are infamous for their ability to cause endocarditis although, rarely, they can also cause a variety of other infections (Table 135.1)
  4. AEROBIC GROWTH CHARACTERISTICS OF HACEK GROUP ORGANISMS HACEK group organisms Characteristics of growth on blood agar after aerobic incubation at 35-37°C for 16-48hr A. actinomycetemcomitans Will not grow in air but grows in air + CO2. Minute colonies at 24hr, 1mm at 48hr

Epidemiology, bacteriology, and clinical characteristics of HACEK bacteremia and endocarditis: a population-based retrospective study. Please help EMBL-EBI keep the data flowing to the scientific community! Take part in our Impact Survey (15 minutes) List some of the general characteristics of the Neisseria genus o Aerobic o. List some of the general characteristics of the. School Georgia Southern University; Course Title M T; Type. Test Prep. Uploaded By Mark.Marz. Pages 8 This preview shows page 4 - 7 out of 8 pages.. Growth and Colony Characteristics of Bacteria and Fungi. In the previous section we have learned the various types of media and specific purpose of each medium. Morphology is the basic criteria for the isolation, identification and classification of microorganisms. Colony characteristics are the basic tool in the field of taxonomy

Micro Exam Flashcards Quizle

  1. g, and is aerobic or a facultative anaerobe. It ferments sugars without gas production
  2. Gram-negative bacteria that provoke IE include complement-resistant bacteria, such as Pseudomonas aeruginosa. Gram-positive bacteria might be the targets of other nonspecific immune factors, including platelet microbicidal proteins, which are peptides produced by activated thrombocytes that kill bacteria by damaging their plasma membrane
  3. For example, one now can easily include the German double ss or the Hacek C. Desktop publishing and WordPerfect 5.1 The HACEK group of organisms were previously difficult to isolate by routine blood culture methods, but with modern culture techniques these organisms are usually isolated within three to five days [20, 21]
  4. Bacteria have different adhesive capacity, based on bacterial surface characteristics and virulence factors called adhesins. For example, the adhesive properties of viridans streptococci are related the amount of dextran present in the streptococcal cell wall, as well as specific surface proteins such as FimA [ 5 , 6 ]
  5. HACEK ORGANISMS. Patients with endocarditis of a native valve caused by an organism in the HACEK group should be treated with ceftriaxone in a dosage of 2 g daily intravenously or intramuscularly.

HACEK is an acronym used to represent the slow-growing gram-negative bacilli associated with endocarditis. The additional members of the HACEK group of bacteria include Aggregatibacter aphrophilus, Actinobacillus actinomycetemcometans, Cardiobacterium hominis, and Kingella kingae Cardiobacterium hominis is a Gram-negative bacillus (rod-shaped) bacterium commonly grouped with other bacteria into the HACEK group. It is one of several bacteria that is normally present in the mouth and upper part of the respiratory tract such as nose and throat. However, it may also rarely cause endocarditis, an infection of the heart valves Hacek report iin bacte. 1. HACEK GROUP GROUP 1. 2. • H-aemophilus spp., - Aggregatibacter aphrophilus - H. paraphrophilus • Aggregatibacter actinomycetemcomitans • Cardiobacterium hominis • Eikenella corodens • Kingella spp. 3. • Gram (-) rods • Capnophilic • Non-motile • Fastidious • More dysgonic- slower or poorer. 1. Gram-Negative Bacilli: Characteristics, Types & Examples. There are so many types of bacteria, it can seem overwhelming. This lesson will explore a group of bacteria known as the Gram-Negative.

Bacilli BOC Flashcards Quizle

  1. is, Eikenella corrodens, and Kingella species. These organisms share an enhanced capacity to produce.
  2. is, Eikenella corrodens, and Kingella kingae, is a rare cause of infective endocarditis (IE). It causes the majority of Gram-negative endocarditis cases and has an excellent prognosis and simple management if properly identified
  3. The genus Haemophilus includes a number of species that cause a wide variety of infections but share a common morphology and a requirement for blood-derived factors during growth that has given the genus its name. Haemophilus influenzae, the major pathogen, can be separated into encapsulated or typable strains, of which there are seven types (a through f including e') based on the antigenic.
  4. Characteristics. All Proteobacteria are Gram-negative (though some may stain Gram-positive or Gram-variable in practice), with an outer membrane mainly composed of lipopolysaccharides.Many move about using flagella, but some are nonmotile or rely on bacterial gliding.The latter include the myxobacteria, an order of bacteria that can aggregate to form multicellular fruiting bodies
  5. . These characteristics may be related to the ability of PorB.1A strains to bind to complement-inhibitory molecules, resulting in a di

Infective endocarditis (IE) is defined as an infection of the endocardial surface of the heart, which may include one or more heart valves, the mural endocardium, or a septal defect. Its intracardiac effects include severe valvular insufficiency, which may lead to intractable congestive heart failure and myocardial abscesses The HACEK group of bacteria includes Haemophilus parainfluenzae, Aggregatibacter spp., Cardiobacterium spp., Eikenella corrodens and Kingella spp. [].These are fastidious gram-negative bacteria that are part of the normal human mucosal flora, predominantly of the oropharynx [].HACEK bacteria have traditionally been associated with endocarditis and causes approximately 3% of all infective.

Update on the HACEK group of fastidious gram-negative

It is a fastidious, facultative anaerobic, nonmotile, nonhemolytic, nonsporing, small gram-negative rod and is a prominent member of the HACEK group (Haemophilus spp., Aggregatibacter actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) of pathogens Background Infective endocarditis due to Escherichia coli is a rare disease but is increasing in frequency, especially among older women. In addition, its mortality rate is higher than that of endocarditis due to the HACEK-group gram-negative bacteria (Haemophilus spp., Aggregatibacter spp., Cardiobacterium hominis, Eikenella corrodens, and Kingela spp.). Case presentation A 58-year-old.

Summary. Infective endocarditis (IE) is an infection of the endocardium that typically affects one or more heart valves.The condition is usually a result of bacteremia, which is most commonly caused by dental procedures, surgery, distant primary infections, and nonsterile injections. IE may be acute (developing over hours or days) or subacute (progressive over weeks to months) 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. HACEK is an abbreviation of the initials of the genera of this group of bacteria: Haemophilus, Aggregatibacter, Cardiobacterium, Eikenella, Kingella.The HACEK organisms are a normal part of the human. Possible microorganisms that should be considered include the HACEK group, Bartonella spp., Brucella spp., Chlamydia spp., Coxiella burnetii (Q-fever), Legionella spp., mycobacteria and various fungi. 3, 13- 15 Diagnostic methods should include serological investigations where they are available, and such methods are central to the. slowly progressive (subacute) endocaridits and. brain abscess (member of the HACEK group) Haemophilus ducreyi causes chancroid, a sexually. transmitted disease (400 cases annually in the. US) with shallow and painful genital ulcers. associated with inguinal lymphadenitis (bubo. formation) 14 HACEK Microorganismse412. Non-HACEK Gram-Negative Bacillie413. Enterobacteriaceaee414. Pseudomonas Speciese414. Unusual Gram-Negative Bacteriae415. Culture-Negative Endocarditise415. Fungie416. Endocarditis in IDUse418. Etiology of Endocarditis in IDUse418. Complications and Their Managemente419. Surgical Therapy.

Eikenella Corrodens Transmission, Infection, Periodontitis Treatment. Eikenella corrodens is a commensal gram-negative bacteria that is anaerobic, non-mobile and non-sporeforming bacillus that might have the pathogenic characteristics.. It naturally exists in the oral flora of the human body as well as in some other organs such as genital. This tissue can become infected by a variety of bacteria, including gram-positive cocci such as Staphylococcus aureus, viridans streptococci, and Enterococcus faecalis, and the gram-negative so-called HACEK bacilli: Haemophilus spp., Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae. The.

Epidemiology, bacteriology, and clinical characteristics

  1. Chapter 31 Actinobacillus, Aggregatibacter, Kingella, Cardiobacterium, Capnocytophaga, and Similar Organisms Objectives 1. Describe the general characteristics of the bacteria included in this chapter. 2. Describe the normal habitat and the routes of transmission for the organisms included in this chapter. 3. Identify the major clinical diseases associated with Actinobacillus, Aggregatibacter.
  2. Janet A. Hindler, MCLS, MT(ASCP), vice-chairholder of the CLSI working group, adds, Fastidious bacteria are those that require blood or blood products and possibly need atmosphere other than ambient air, such as 5% carbon dioxide, in order to grow successfully in vitro
  3. HACEK Group of organisms have been updated Section 8.4 Table 2 amended to indicate positive and negative growth. Appendix 1 and 2 Flowcharts updated Appendix 3 Table: Aerobic growth Characteristics of HACEK group organisms moved from section 8:3 to appendix 3 References References update
  4. A post-infectious disease that develops 2-6 weeks after pharyngitis by group A B-hemolytic streptococcus. It is an acute, recurrent, immune-mediated, multisystem inflammatory disorder. Usually first occurs in childhood (5-15 years) and recurs in adults
  5. of your new skills to identify unknown bacteria you will be given three bacterial cultures and asked to identify each to the level of genus the organisms selected include types you have studied this semester and some new genera figure 1 presents a, isolation and identification of bacteria in retailed smoked fish withi
Hacek report iin bactePPT - ENDOCARDITIS PowerPoint Presentation, free download

Bacterias Grupo Hacek Pd

Class of bacteria. Alphaproteobacteria Transmission electron micrograph of Wolbachia within an insect cell. Credit:Public Library of Science / Scott O'Neill: Scientific classification; Domain: Bacteria: Phylum: Proteobacteria: Class: Alphaproteobacteria Garrity et al. 2006: Subclasse Traditionally, growth characteristics and a range of biochemical tests were used to identify the species of bacteria cultured. Matrix assisted laser desorption/ionisation time of flight is a semiautomated form of mass spectrometry which allows rapid identification of cultured organisms, following detection of growth in BC The present disclosure discloses simple and efficient glycan- or carbohydrate-based processes or methods for the rapid identification of biological markers and therapeutic target

Infective endocarditis (IE), a once rare disorder, has been increasing in incidence in the US with the Midwest having the highest increase in rate .Per a recent study, between the year 2000 and 2011 the incidence of IE increased from 11 per 100,000 to 15 per 100,000 .Common risk factors that may predispose to the development of IE include the male sex, intravenous (IV) drug abuse, age >60. Bacteria of the HACEK group (fastidious organisms) originate from the oropharyngeal or urogenital flora and include Haemophilus aphrophilus or paraphrophilus (H), Actinobacillus actinomycetemcomitans (A), Cardiobacterium hominis (C), Eikenella corrodens (E), and Kingella species (K)

Eick S, Pfister W, Straube E. Antimicrobial susceptibility of anaerobic and capnophilic bacteria isolated from odontogenic abscesses and rapidly progressive periodontitis. Int J Antimicrob Agents 1999;12:41-46. 18. El Khizzi N, Kasab SA, Osoba AO. HACEK group endocarditis at the Riyadh Armed Forces Hospital. J Infect 1997;34:69-74 In the HACEK group of microorganisms, which are slow-growing gram-negative bacteria, the most common cause of endocarditis is H. parainfluenzae [42]. Endocarditis caused by E. corrodens , which frequently colonizes the oropharynx, has been reported in only two (3%) of 76 IE episodes by Martin et al. [ 13 ] to date

HACEK Group Infections: Definition, Pathology & Treatment

The HACEK group of organisms are gram negative bacilli that require increased CO2 for growth. They are commonly associated with endocarditis, and include Haemophilus species (especially H.Aphrophilus), Actinobacillus actinomycetmcomitans, Cardiobacterium hominis, Eikenella corrodens and Kingella species Infective Endocarditis. The characteristic pathology of infective endocarditis is the vegetation, a lesion that is the result of successive deposition of platelets and fibrin on the endothelial surface of the heart. Infection is the most common cause, and the usual pathogen is one of a variety of bacterial species, although fungi may be the. Infective endocarditis (IE) is a rare, life-threatening disease that has long-lasting effects even among patients who survive and are cured. IE disproportionately affects those with underlying structural heart disease and is increasingly associated with healthcare contact, particularly in patients who have intravascular prosthetic material 1. INTRODUCTION. The identification of the HACEK group (Haemophilus, Aggregatibacter, Cardiobacterium, Eikenella, Kingella) and other fastidious Gram-negative rods (e.g., Actinobacillus, Capnocytophaga, Pasteurella, Neisseria, Moraxella, Dysgonomonas, among others) by conventional phenotypic methodology is difficult, mainly because of their slow growth and low reactivity in biochemical tests Types & Characteristics of Bacteria . View Quiz. Characteristics of Bacteria . View Quiz. Decomposers . Understanding HACEK Group Infections . View Quiz. Kinds of Gram-Negative Bacilli

insidious infections. Bacteria included in the HACEK group (haemophilus, aggregatibacter, cardiobacterium, Eikenella corrodens, and kingella) are responsible for a low percentage of infections (3% of cases). The peculiarity that makes these pathogens insidious is the slow growth and the frequent col • Major blood culture criteria include the following: - Two blood cultures positive for organisms typically found in patients with IE (S viridans, Streptococcus bovis, a HACEK group organism, community-acquired S aureus, or enterococci in the absence of a primary focus) - Blood cultures persistently positive for one of the above organisms. With the above-mentioned data, it is reasonable to suggest that treatment of IE by Yersinia spp. should include a combination of a third-generation cephalosporin or a quinolone with an aminoglycoside. However, a preference towards cephalosporins over quinolones in the case of IE by non-HACEK Gram-negative bacteria is noted in the guidelines. The HACEK micro-organisms are a group of fastidious, slow-growing, Gram-negative bacilli. Immunocompromised children are at particular risk for infection with these organisms. In the past, the HACEK group of bacteria have been highly sensitive to treatment with ampicillin variant streptococci and organisms in the HACEK group (Haemophilus, Aggregatibacter (previously Actinobacillus), Cardiobacterium, Eikenella, Kingella). For example, one study found that MALDI-TOF MS correctly identified more than 86% of HACEK isolates, whereas biochemical testing identified less than 77%31. Similarly, discrimination amon

Background: Culture negative abscesses at multiple sites are a common phenomenon. It is an important source of sepsis and septic shock in many developed and developing countries worldwide. Case Presentation: This case describes a 42 year-old Malay gentleman who presented to us with high grade fever associated with cough, foul-smelling sputum and pleurisy 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. HACEK is an abbreviation of the initials of the genera of this group of bacteria: Haemophilus , Aggregatibacter , Cardiobacterium , Eikenella , Kingella A.Actinomycetemcomitans and Systemic Diseases: • It was recently revealed that organisms of the HACEK group (Haemophilus spp., A. actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens and Kingella kingae), and A. actinomycetemcomitans, in particular, are associated with systemic diseases distant from the oral cavity (Fine et al. Polymerase chain reactions (PCRs) have been used for the detection of DNA types that are specific for fastidious bacteria in culture-negative bacteria. Specific organisms that have been tested in this way include rickettsia (Coxiella, Bartonella, and Tropheryma whipplei [Whipple disease])

Endocarditis 2015

This includes viridans group streptococci, staphylococci (most dangerously methicillin-resistant S. aureus), and enteroccoci. Less frequently, gram-negative species such as the HACEK group ( Hemophilus, Aggregatibacter, Cardiobacterium, Eikenella, and Kingella species) are implicated in the pathogenesis of IE HACEK endocarditis is often difficult to diagnose given the slow-growing characteristics of the organisms involved. Haemophilus parainfluenzae, one of the HACEK organisms, is an uncommon cause of endocarditis.We describe a case of a previously healthy young man with H parainfluenzae endocarditis that was associated with maxillary sinusitis and severe systemic complications, including septic.

Infective endocarditis (IE) is a life-threatening disease, mostly related to staphylococci, streptococci, and enterococci, altogether responsible for 80%-90% of IE cases in large cohort studies from Europe, North America, or Oceania [1, 2].In the recent European guidelines [], empirical treatment of IE in acutely ill patients targets these gram-positive cocci, although other microorganisms. morphologic characteristics. These characteristics provide a mechanism for determination of microbial identity to the genus (and sometimes, species) level. Identification of pathogenic bacteria and yeast provides the basis for guidance of treatment with antimicrobial and antifungal agents. In the clinica Enterobacteriaceae Family: Common Characteristics. Enterobacteriaceae family contains a large number of genera that are biochemically and genetically related to one another. Many of the traditional or familiar bacteria are found in this family e.g. Escherichia, Shigella, Salmonella, Enterobacter, Proteus, Yersinia etc

These include cat-scratch disease, chronic bacteremia, chronic and year and place of diagnosis in order to evaluate the clinical and epidemiologic characteristics of B. quintana and B. henselae infection in (1 patient), HACEK group bacteria (13 patients), Escherichia coli (3 patients), Neisseria sicca (1 patient. Aggregatibacter actinomycetem comitans ATCC number: 33384 Small, non-motile, Gram-negative, saccharolytic, capnophilic, coccobacillus. Prominent member of the HACEK group of pathogens. It is derived from the Greek word. actes- meaning Ray, because of the star on the top of agar colony This article illustrates that, although epidemiology and management of HACEK group endocarditis has remained relatively unchanged over time, fundamental changes are needed in our understanding of. The HACEK group of organisms may cause large vegetations and large-vessel embolism. Diagnose those by serologic testing and polymerase chain reaction (PCR)-based testing; EKG . Does not help in diagnosis but can detect complications; Most common EKG findings: unremarkable or sinus tachycardia. (Osman 2013) Complication Infective endocarditis is infection of the endocardium, usually with bacteria (commonly, streptococci or staphylococci) or fungi. It may cause fever, heart murmurs, petechiae, anemia, embolic phenomena, and endocardial vegetations. Vegetations may result in valvular incompetence or obstruction, myocardial abscess, or mycotic aneurysm Rapid molecular assay systems for identification of Group B Streptococcus in clinical specimens. Molecular methods are currently a recommended method for the rapid identification of Group B Streptococcus directly in vaginal/rectal specimens or in broth-enriched specimens because of their superior sensitivities and specificities [133] Management HACEK. Historically, β-lactam antibiotics such as penicillin or ampicillin, with or without the addition of aminoglycoside, were considered the drugs of choice for HACEK endocarditis HACEK Group and Capnocytophaga HACEK is an acronym of the first initial of each genus that belong in the group: Haemophilus aphrophilus Actinobacillus actinomycetemcomitans Cardiobacterium hominis Eikenella corrodens Kingella species Capnocytophaga sp. Has similar requirements as the HACEK group W.B. Saunders Company items and derived items. Objectives. 1. List the general characteristics within the genus Haemophilus, including general habitat, atmosphere, and temperature requirements.. 2. Describe the infections caused by Haemophilus influenzae and Haemophilus ducreyi.. 3. Describe the difference in the typeable and nontypeable categories of Haemophilus, their virulence factors, and the disease they cause The incidence of endocarditis is approximately 5 to 7.9 cases per 100,000 persons per year in the United States,1 and has been stable over time. Risk factors for infectious endocarditis include. Based on the previous, also consider coverage for HACEK group (Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, and Kingella species) Prosthetic valve present . Less than 1 year from valve replacement: coverage for S. aureus. If within 2 months of replacement, consider coverage for possible hospital acquired gram-negative bacteria