El impétigo, una de las afecciones de la piel más comunes entre los niños. El impétigo no ampolloso comienza como pequeñas ampollas que se revientan y. Impétigo ampolloso Niños pequeños Siempre causado por S. aureus Por acción de una toxina epidermolítica Ampollas superficiales de. ABSTRACT. Impetigo is a common cutaneous infection that is especially prevalent in children. Historically, impetigo is caused by either group A β- hemolytic.
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Lancefield classification of streptococci is based on the cell wall’s C carbohydrate antigens, going from A to T. Impetigo in a population over 8. The use in extensive area or in patients with burns aren’t recommended, because of the risk of nephrotoxicity and absorption of the drug’s vehicle, polyethylene glycol, especially in patients with renal insufficiency. Other macrolides such as clarithromycin, roxithromycin and azithromycin have the advantage of presenting fewer side effects in the gastrointestinal tract, as well ampokloso a more comfortable posology, although with a higher cost.
There are at least two different types of exfoliative toxins, so that exfoliative toxin A relates to bullous impetigo and toxin B with scalded skin impwtigo. Normal skin is colonized by large numbers of bacteria that live as commensals in its surface or in hair follicles. It is less effective in traumatic lesions and those with abscess formation usually caused by anaerobic bacteria and MRSA.
Removal of amino-terminal extracellular domains of desmoglein 1 by staphylococcal exfoliative toxin is sufficient to initiate epidermal blister formation.
Several decades of epidemiological studies indicate that there are some strains of group A streptococci that elicit oropharyngeal infections, but rarely cause impetigo.
The path would be from the nares or perineum to normal skin, and later to injured skin. Efficacy and safety of retapamulin ointment as treatment of impetigo: It is less effective against Gram-negative bacteria, but exhibits in vitro activity against Haemophilus influenzae, Neisseria gonorrhoeae, Pasteurella multocida, Bordetella pertussisand Moraxella catarrhalis.
Blisters are localized in bullous impetigo and disseminated in scalded skin syndrome. A crucial factor to the infection virulence is the ability of these bacteria to produce circulating toxins that act as superantigens. Bacterial skin infections in children: George A, Rubin G.
It is active ampololso Gram-positive cocci such as staphylococci amploloso streptococci. Skin microflora and bacterial infections of the skin. It is available in Brazil in the form of ointment, alone or in combination with bacitracin. Streptococci isolated from various skin lesions: The resulting superficial ulceration is covered with purulent discharge that dries as an adhering and yellowish honey-colored crust.
IMPÉTIGO by Sofía Herrera on Prezi Next
Clinical and molecular characteristics of invasive and noninvasive skin and soft tissue infections caused by group A streptococcus. Skin bacteriology and the role of Staphylococcus aureus in infection. November 15, ; Accepted: The main etiological agent has varied over time.
New horizons for cutaneous microbiology: The commercially available formulation is a mixture of neomycin B and C, while framycetin, used in Canada and amoplloso European countries, is composed of pure neomycin B. One should take into account the possibility of resistance to S. Bullous impetigo and scalded skin syndrome, caused by staphylococcal toxins and toxic shock syndrome, caused by staphylococcal or streptococcal toxins are examples of toxin-mediated diseases.
Aminoglycosides exert their antibacterial activity by binding to the 30S ribosomal subunit and interfering with protein synthesis.
Bullous impetigo occurs most commonly in intertriginous regions such as the diaper area, axillae and neck, although any cutaneous impeigo can be affected, hios palms and soles Figures 1 and 2. The initial lesion is a vesicle, located on an erythematous base, which iseasily ruptured.
Bullous impetigo in diaper area. Bacteria in biofilms are 50 to times more resistant to antibiotics than bacteria in plankton organisms that have little or imppetigo ability to move. Bacterial resistance rate is low, around 0. Rio Branco, 39 Mupirocin pseudomonic acid A is the major metabolite of Pseudomonas fluorescens fermentation.
The discovery of satellite lesions, caused by self-inoculation, is frequent. J Med Assoc Thai. It is listed in category B for use in pregnant and impegigo women. The isolation of streptococci of groups other than A can mean a secondary infection of preexisting lesions or colonization on cutaneous surface.
Sometimes, the overgrowth of these bacteria causes skin diseases, and in other occasions, bacteria that are normally found on the skin can colonize it and cause diseases.
Neomycin sulfate is active mainly against aerobic Gram-negative bacteria Escherichia coli, Enterobacter aerogenes, Klebsiella pneumoniae, Proteus vulgaris.
In the impetigo treatment review performed by the Cochrane Database of Systematic Reviews, the authors report a relative lack of data on the efficacy of topical antiseptics. It is effective against S.
Unique approaches for the topical treatment and prevention of cutaneous infections: Clinical, bacteriological, toxicological and sensitivity to antibiotics studies. It works by interfering with bacterial cell wall formation. Biofilms are complex and sessile aggregates comprising one or more bacterial e associated with an extracellular polymeric substance. Rather, glomerulonephritis may result from streptococcal cutaneous or upper respiratory tract infections, but the skin is the main previous site.
Staphylococcal strains that are resistant to erythromycin will also be resistant to clarithromycin, roxithromycin and azithromycin. Clinical cure of impetigo with retapamulin is well defined, when compared with placebo.