Loss of cutaneous microbial diversity during first 3 weeks of life in very low birthweight infants.

Neonatal sepsis (NS) is a frequent problem in neonatal intensive care, especially in preterm and very low birthweight (VLBW) infants. The objective of the study was to characterize the cutaneous bacterial microbiome in VLBW infants treated in the neonatal intensive care unit (NICU). Non-invasive skin microbiome specimens were taken repeatedly from 12 VLBW infants during treatment in NICU starting on the first day of life. All infants received benzylpenicillin and netilmicin during the first 1-5 postnatal days. Samples were also collected from incubators. High cutaneous microbial diversity was present at birth in 11 of 12 of the infants, but the diversity decreased substantially after the first weeks of life in all infants regardless of their infection status. After the loss of diversity, one Staphylococcus operational taxonomic unit dominated the skin microbiome. Recovery of microbial diversity was seen in six of 12 neonates. The microbiome of incubators showed typical environmental bacterial genera. Maternal antibiotic treatment, the aetiology of the preterm birth or being born by C-section did not appear to affect the diversity of skin microbiota at birth, and no correlation was found between cutaneous microbiome and NS.

Acquired Bartter-like syndrome association with netilmicin therapy in an extremely low birth weight infant.

Aminoglycosides are commonly used antibiotics with excellent renal parenchymal penetration. Their clinical effectiveness is counter balanced with the risk of renal toxicity, which develops in a dose-dependent fashion. Aminoglycoside-induced renal tubular dysfunction could result in diffuse damage or manifest as a Fanconi-like syndrome, Bartter-like syndrome (BLS), or distal renal tubular acidosis.(1-4) Although tubulopathy associated with amikacin and gentamicin was reported in adults and rarely children, to the best of our knowledge, netilmicin-associated BLS neither in adults nor in children has been reported in the literature. We here report a 30-week, 770 g male preterm infant who developed BLS just after netilmicin treatment for neonatal sepsis and recovered 6 weeks after the drug cessation.

Reduced Posology of an Ophthalmic Hydrogel Containing Dexamethasone/Netilmicin to Prevent and Treat Ocular Inflammation After Cataract Surgery: Efficacy and Tolerability.

INTRODUCTION: To demonstrate efficacy and safety of an ophthalmic hydrogel formulation of netilmicin/dexamethasone, containing xanthan gum twice a day (b.i.d.) versus netilmicin/dexamethasone eye drops four times a day (q.i.d) to treat inflammation and prevention of infection after cataract surgery. METHODS: Patients undergoing phacoemulsification with intraocular lens implantation (IOL) were randomised in two groups: group 1, twice daily (b.i.d.) dexamethasone 0.1%/netilmicin 0.3% (Netildex) ophthalmic gel; group 2, four times daily (q.i.d.) dexamethasone 0.1%/netilmicin 0.3% (Netildex) eye drops. Both treatments were administered for 14 days after surgery. Patients were evaluated before surgery, on the day of surgery and at 1, 7, 15 and 60 postoperative days. The primary efficacy endpoint was evaluation of cellularity and flare in the anterior chamber through slit-lamp biomicroscopy 7 days after surgery. Secondary endpoints included: presence of signs/symptoms of postoperative ocular inflammation and incidence of infection. RESULTS: One hundred seventy-three patients were randomised and 168 were evaluable. Flare and cellularity were resolved at day 7 in 92.5% of patients and almost completely by day 15. In both intent to treat (ITT) and per-protocol (PP) populations, the efficacy analysis demonstrated that the gel formulation administered twice a day was non-inferior to the eye drops administered four times a day. For ITT analysis, the lower limit of the 97.5% confidence interval (- 0.0535) was greater than the non-inferiority limit of -0.10. For the PP analysis, the lower limit of the 97.5% confidence interval (- 0.0526) was greater than the non-inferiority limit of - 0.10. The patient's global tolerability and reported symptoms were similar between treatment groups. No microbial load and no safety events were observed. CONCLUSIONS: Efficacy of the gel reduced posology (twice a day) is not inferior to four times a day eye drops. Both treatments were well tolerated and efficacious. The new reduced posology hydrogel formulation may improve patient compliance and quality of life. TRIAL REGISTRATION: Eudract: 2016-0021138-63; ClinicalTrial.gov: NCT029738880.

Recurrent and relapsing peritonitis: causative organisms and response to treatment.

BACKGROUND: The clinical behavior and optimal treatment of relapsing and recurrent peritonitis episodes in patients undergoing long-term peritoneal dialysis are poorly understood. STUDY DESIGN: Retrospective study over 14 years. SETTING & PARTICIPANTS: University dialysis unit; 157 relapsing episodes (same organism or culture-negative episode occurring within 4 weeks of completion of therapy for a prior episode), 125 recurrent episodes (different organism, occurs within 4 weeks of completion of therapy for a prior episode), and 764 control episodes (first peritonitis episode without relapse or recurrence). PREDICTORS: Exit-site infection, empirical antibiotics. OUTCOME MEASURES: Primary response (resolution of abdominal pain, clearing of dialysate, and peritoneal dialysis effluent neutrophil count < 100 cells/mL after 10 days of antibiotic therapy), complete cure (resolution by using antibiotics without relapse/recurrence), catheter removal (for any cause while on antibiotic therapy), and mortality. RESULTS: Compared with the control group, more relapsing episodes were caused by Pseudomonas species (16.6% versus 9.4%) and were culture negative (29.9% versus 16.4%); recurrent infections commonly were caused by Enterococcus species (3.2% versus 1.2%) or other Gram-negative organisms (27.2% versus 11.1%) or had mixed bacterial growth (17.6% versus 12.7%). There were significant differences in primary response, complete cure, and mortality rates among groups (P < 0.001 for all comparisons). Compared with the control and relapsing groups, post hoc analysis showed that the recurrent group had a significantly lower primary response rate (86.4%, 88.5%, and 71.2%, respectively), lower complete cure rate (72.3%, 62.4%, and 42.4%, respectively), and higher mortality rate (7.7%, 7.0%, and 20.8%, respectively). LIMITATIONS: Retrospective analysis. CONCLUSION: Relapsing and recurrent peritonitis episodes are caused by different spectra of bacteria and probably represent 2 distinct clinical entities. Recurrent peritonitis episodes had a worse prognosis than relapsing ones.

Netilmicin in the neonate: pharmacokinetic analysis and influence of parenteral nutrition.

OBJECTIVE: The aim of this study was to investigate the impact of parenteral nutrition on netilmicin pharmacokinetics in critically ill neonates during the first week of life. METHOD: A total of 200 neonates (gestational ages 26.4-41 weeks) treated with netilmicin (4-5 mg/kg in extended dosing intervals) for postnatal sepsis in the first week of life received either fluid therapy or parenteral nutrition. Netilmicin peak and trough serum concentrations were monitored and netilmicin pharmacokinetic parameters were compared with and without parenteral nutrition. RESULTS: There were no statistically significant differences between the pharmacokinetic parameters of netilmicin (volume of distribution, elimination half-life, clearance) in critically ill neonates >32 weeks during the first week of life that received either fluid therapy or parenteral nutrition. For neonates <32 weeks this comparison was not feasible as the majority were parenterally fed. CONCLUSION: Provision of parenteral nutrition (versus fluid therapy) in critically ill neonates >32 weeks did not significantly affect netilmicin pharmacokinetics and therefore does not require modification of recommended netilmicin dosage regimens.

Individualising netilmicin dosing in neonates.

PURPOSE: The aim of this study was develop an optimal dosing regimen for netilmicin in neonates. METHODS: This was a population pharmacokinetic study in 97 neonates aged from 2 to 28 days after the due date who were being treated with netilmicin for suspected sepsis. The model was used to simulate dosing regimens. RESULTS: The principle factors influencing netilmicin clearance (CL) were postmenstrual age (PMA) and current body weight (CWT), and the principal determinant of volume of distribution (V) was CWT. The final covariate model was CL = 0.192 x (CWT/2)(1.35) x (PMA/40)(1.03), V = 1.5 x (CWT/2)(0.3). The optimal dosing was 5 mg/kg ever 36 h, 5 mg/kg every 24 h, 6 mg/kg every 24 h and 7 mg/kg every 24 h for neonates < or =27, 28-30, 31-33 and > or =34 weeks PMA, respectively. CONCLUSION: Individualisation of netilmicin dosing in neonates requires adjustment of dose by body weight, and dosing interval by both PMA and CWT.

Effect of topical netilmicin on the reduction of bacterial flora on the human conjunctiva.

PURPOSE: To investigate the effects of topical netilmicin on human conjunctival bacterial flora. METHODS: Fifty-six patients' eyes with cataract were treated three times a day with netilmicin 1 day before the surgery. The fellow eyes of the patients were not treated. After 1 day of netilmicin application cultures of the inferior palpebral conjunctiva were performed in both eyes. Bacterial evaluation is qualitative. McNemar test was used for statistical analyses. RESULTS: The number of eyes with positive culture for coagulase negative staphylococcus (CNS) in untreated eyes was 43 (76.8%) and in treated eyes it was 5 (8.93%) and the difference was statistically significant (p=0.000). In untreated eyes number of negative cultures with no bacterial growth was 8 (14.3%) and it was 47 (83.9%) in the treated eyes. The difference among groups was statistically significant (p=0.000). Netilmicin is found very effective for CNS as the percentage of positive cultures (n=43) in untreated eyes to positive cultures (n=4) in the treated fellow eye was 90.7%. Likewise, all patients with Staphylococcus aureus positive cultures in untreated eyes (n=5) had negative culture for this microorganism in their treated fellow eyes (100%). CONCLUSIONS: The Endophthalmitis Vitrectomy Study demonstrated that the most common causes of postoperative endophthalmitis are coagulase negative microorganisms, S aureus and Streptococcus species. As netilmicin was found effective to reduce the number of positive cultures for these bacteria, it can be used to lower the incidence of postoperative endophthalmitis before surgery.

Impact of aminoglycoside cycling in six tertiary intensive care units: prospective longitudinal interventional study.

AIM: To determine the effect of aminoglycoside cycling in six tertiary intensive care units (ICU) on the rates of sepsis, aminoglycoside resistance patterns, antibiotic consumption, and costs. METHODS: This was a prospective longitudinal interventional study that measured the effect of change from first-line gentamicin usage (February 2002-February 2003) to amikacin usage (February 2003-February 2004) on the aminoglycoside resistance patterns, number of patients with gram-negative bacteremia, consumption of antibiotics, and the cost of antimicrobial drugs in 6 tertiary care ICUs in Zagreb, Croatia. RESULTS: The change from first-line gentamicin to amikacin usage led to a decrease in the overall gentamicin resistance of gram-negative bacteria (GNB) from 42% to 26% (P<0.001; z-test of proportions) and netilmicin resistance from 33% to 20% (P<0.001), but amikacin resistance did not change significantly (P=0.462), except for Acinetobacter baumanni (P=0.014). Sepsis rate in ICUs was reduced from 3.6% to 2.2% (P<0.001; chi(2) test), with a decline in the number of nosocomial bloodstream infections from 55/100 patient-days to 26/100 patient-days (P=0.001, chi(2) test). Furthermore, amikacin use led to a 16% decrease in the overall antibiotic consumption and 0.1 euro/patient/d cost reduction. CONCLUSION: Exclusive use of amikacin significantly reduced the resistance of GNB isolates to gentamicin and netilmicin, the number of GNB nosocomial bacteremias, and the cost of total antibiotic usage in ICUs.

[Aminoglycoside resistance of enterobacteria isolated from urinary infections in surgical departments]. / Rezistenta la aminoglicozide a enterobacteriilor izolate din infectii urinare în sectii cu profil chirurgical.

The aim of the study was to determine the aminoglycosides resistance of Enterobacteriaceae strains isolated from urocultures. Identification of the germs was performed by the API system (BioMerieux) and susceptibility tests was performed by disk-diffusion test (CLSI standards) and with API strips. For detecting the resistance to aminoglycosides we used gentamicin, tobramycin, netilmicin and amikacin. From 2500 urine samples we isolated 673 microbial strains, from which 531 were Enterobacteriaceae, especially E. coli, 57.62% and Klebsiella pneumoniae pneumoniae, 27.68% strains. We observed natural maintained sensibility to aminoglycosides at 55.17% from all the strains we have studied The high prevalence of aminoglycosides resistance of Enterobacteriaceae strains is explained by prolonged antibiotic therapy of patients with invasive diagnostic and therapeutic procedures. A rational policy in prescribing antibiotics in this department is therefore mandatory.

[Generalized tetanus complicating a traditional medicine applied for snakebite]. / Tétanos généralisé compliquant un traitement traditionnel instauré après une morsure de serpent.

In many of Africa's rural areas, snakebite victims often resort to traditional healers for first line treatment. This may be source of infectious complications. We report a case of generalized tetanus which occured after 15 days in a 13-years old boy who had applied a traditional, plant-based concoction on a snake bite. He presented with trismus, generalized contractures and fever extended musculo-aponevrotic necrosis of the right upper limb, without loss of consciousness. The only accompanying biological sign was an increased leukocyte count (11,200/mm3) with a predominance of neutrophils (84%). Platelets count, creatinin and AST/ALT titers and haemostasis were all normal, as was the radiogram of the right hand. The clinical outcome was favourable after 3 weeks hopital care (antibiotic, muscle relaxants, antitetanus serotherapy and local wounds care). This clinical observation shows that traditional care for snake bite wounds can be an entry point for tetanus. Appropriate treatment of snake bites in a hospital setting is of the utmost importance, in addition to vaccination against tetanus, in order to reduce the incidence of tetanus in African countries.

[Sudden cardiorespiratory arrest in adults with acute epiglottitis. Report of 2 cases]. / Parada cardiorrespiratoria súbita en adultos con epiglotitis aguda presentación de dos casos.

We report two adult cases of sudden cardiorespiratory arrest because an acute epiglottitis that ocurred in our hospital. Although it is an uncommon pathology nowdays with good prognosis generally, we try to call the attention about this complication which can happen of unforseeable way even in previous absence of respiratory obstruction. One of the patients required coniotomy in ICU due to impossibility of orotracheal intubation (OI) and the other died in spite of an urgent performance.

[Pseudomonas and acute external otitis. Results of a microbiological study in patients without previous antibiotic treatment]. / Pseudomonas y otitis externa aguda. Resultados de un estudio microbiológico en pacentes sin tratamiento antibiótico previo.

We report the results of a microbiological clinic study that was performed by our ENT Department between years 2000 and 2001 whose main objective was to determine, in Badajoz Area of Health, which bacteria were involved in the acute diffuse external otitis of patients without previous antibiotic treatment (two weeks before obtaining the samples). Of 79 isolated microorganisms in 62 patients that fulfilled the requirements established Pseudomonas, mainly P. Aeruginosa, represented a 46.83% altogether followed by Staphylococcus (18.98%). In almost one fourth part of the cases strains of associated fungi were identified.

Hyperacute unilateral gonococcal endophthalmitis in an HIV-infected man without genital infection.

PURPOSE: To demonstrate the necessity of obtaining an accurate history from patients presenting abnormal evolution of ophthalmologic diseases. METHODS: A 42-year-old patient, denying any previous ocular or systemic morbidity, presented with an unusual severe and hyperacute gonococcal endophthalmitis with corneal abscess but no concurrent genitourinary infection. Only after a further interview did the patient reveal his human immunodeficiency virus status and a previous diagnosis of acquired immunodeficiency syndrome. RESULTS: Adequate topical and intravenous antibiotic treatment and surgery led to salvage of the eye. CONCLUSIONS: An accurate history should be obtained by patients with an abnormal course of an ophthalmologic disease, focusing on immunologic deficiencies that can cause extremely serious ophthalmologic complications with ensuing risk of visual impairment or ocular loss (bulbar enucleation).

Short antibiotic prophylaxis for bacterial infections in a neonatal intensive care unit: a randomized controlled trial.

We compared the effectiveness of a single dose and a three-day course of antibiotic prophylaxis in preventing bacterial infections in high-risk neonates. The study was a prospective, randomized controlled trial conducted in a 20-bed tertiary referral neonatal intensive care unit (NICU). A series of 130 neonates admitted consecutively to the NICU, fulfilling risk factors for infection, were assigned at random to receive intravenous antibiotic prophylaxis with ampicillin and netilmicin either in two daily doses for 72 h (three-day-administration group, 67 infants) or in a single bolus injection on admission (bolus group, 63 infants). Hospital-acquired infection, the main outcome measure, was defined as infection that developed at least 48 h after admission, and vertical infection (maternally transmitted) was considered to be present when clinical symptoms and abnormal laboratory findings became evident within 48 h of birth. Infections were considered as suspected when clinical and laboratory findings of infection were present, without positive cultures, and as confirmed when positive cultures were also present. No significant differences were found between the two groups of neonates studied in mean birth weight, gestational age or postnatal age on admission. The incidence of vertical infection was similar in the two groups (16/67, 23.9% vs. 14/63, 22.2%). Of the 130 newborns studied, 29 (22.3%) acquired at least one nosocomial infection during their NICU stay; total hospital-acquired infections, calculated as the incidence density of infection (the number of infective episodes divided by the number of days in the NICU), were less frequent among newborns who received the three-day course than the bolus (relative risk 0.69). This difference, although not statistically significant, depended on the different incidence density of confirmed nosocomial infections rather than on suspected infections (relative risk 0.59; 95% confidence interval 0.32-1.09; P=0.1). There were no significant differences between the two groups in overall mortality. A single bolus administration on admission is therefore likely to be as effective as a three-day course of antibiotic prophylaxis in preventing bacterial infection in high-risk infants admitted to an NICU.

Relative efficacy and toxicity of netilmicin and tobramycin in oncology patients.

We prospectively compared the efficacy and safety of netilmicin sulfate or tobramycin sulfate in conjunction with piperacillin sodium in 118 immunocompromised patients with presumed severe infections. The two treatment regimens were equally efficacious. Nephrotoxicity occurred in a similar proportion in patients treated with netilmicin and tobramycin (17% vs 11%). Ototoxicity occurred in four (9.5%) of 42 netilmicin and piperacillin and in 12 (22%) of 54 tobramycin and piperacillin-treated patients. Of those evaluated with posttherapy audiograms, three of four netilmicin and piperacillin-treated patients had auditory thresholds return to baseline compared with one of nine tobramycin and piperacillin-treated patients. The number of greater than or equal to 15-dB increases in auditory threshold as a proportion of total greater than or equal to 15-dB changes (increases and decreases) was significantly lower in netilmicin and piperacillin- vs tobramycin and piperacillin-treated patients (18 of 78 vs 67 of 115). We conclude that aminoglycoside-associated ototoxicity was less severe and more often reversible with netilmicin than with tobramycin.

Netilmicin in the treatment of infections in patients with cancer.

Ninety-two patients with cancer with 100 infectious episodes were treated with netilmicin sulfate, a new aminoglycoside. Netilmicin was administered intravenously, either intermittently or by continuous infusion. The overall cure rate was 60%. Gram-negative bacilli were the most common causative organisms and the response rate for these infections was 32/53 (60%). The most common pathogens were Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Pneumonia, urinary tract infection, and septicemia were the most common types of infection treated and the response rates were 23/47 (49%), 19/21 (90%), and 9/17 (53%), respectively. Nephrotoxicity occurred in ten patients (6%) who had normal renal function initially. Netilmicin is an effective aminoglycoside with a spectrum of antibacterial activity similar to that of gentamicin sulfate and it appears to be less nephrotoxic.

Pyometra in a bitch following unusual sterilisation.

A female, stray crossbreed dog, approximately four years old, was presented for routine spaying during a charity neutering programme in Romania. On clinical examination the bitch was lethargic and pyrexic (40.6 degrees C), but no other signs of illness were detected. Laparotomy revealed an enlarged uterus, severed at the cervix, with no communication to the vagina. Abdominal inspection showed an apparently normal, ligated vaginal stump. An ovariohysterectomy was performed and the dog was treated with a seven-day course of netilmicine. It subsequently made a full recovery.

[Treatment of febrile neutropenia episodes in children, with a piperacillin-tazobactam and netilmicin combination]. / Traitement des épisodes de neutropénie fébrile chimio-induite de l'enfant par l'association pipéracilline-tazobactam et nétilmicine.

OBJECTIVES: The authors had for aim to assess the effectiveness and toxicity of a piperacillin-tazobactam-netilmicin combination, and the possibility of avoiding using glycopeptide, in children with febrile neutropenic episodes induced by chemotherapy. METHODS: A retrospective study was made, including children treated for a febrile neutropenic episode (absolute neutrophile count < 0.5 x 10(9)/l) by a piperacillin-tazobactam-netilmicin combination. If fever persisted 48 hours after the beginning of antibiotic therapy, a glycopeptide could be added. The responses to the treatment were defined as follows: 1) total success (no fever or documented infection) at 48 hours and at 72 hours following the beginning of treatment; 2) partial success (apyrexia beyond 72 hours without any therapeutic change); 3) failure (persistent infectious signs 48 hours after the introduction of glycopeptide). RESULTS: Sixty-nine episodes were assessable, corresponding to 41 patients, treated for a solid tumour (29), an acute leukaemia in remission (11), or a metabolic disease (1). The febrile episodes were divided into fever of unknown origin (71%), microbiologically documented fever (12%), and clinically documented fever (17%). No death occurred, no toxicity was reported. With this antibiotic therapy, total success at 72 hours was observed in 72% in case of fever of unknown origin and 45% in case of documented infections. The success rate reached 84% when a glycopeptide was added (30% of the cases). CONCLUSION: The piperacillin-tazobactam-netilmicin combination is very effective and well tolerated in probabilistic treatment of febrile neutropenia induced by chemotherapy, but does not allow to decreasing the frequency of glycopeptide administration.

Orofacial space infections, etiology, microbiological susceptibility and surgical management / Infecciones del espacio orofacial, etiología, susceptibilidad microbiológica y manejo quirúrgico

Orofacial infections are considered as one of most common infections and need rapid and adequate treatment as they affect a very delicate region and are associated with serious life-threatening complications. Orofacial infections can be either odontogenic that is with an origin in teeth and associated structures or non-odontogenic, not associated with teeth, can affect facial spaces and spread from one space to another, so a good knowledge about diagnosis and treating these infections is of utmost importance, and can include both non-surgical and surgical treatment. The aim of our study was to determine the most common cause of orofacial infections, the most common bacterial microorganisms and their antibiotic susceptibility. Materials and Methods: A descriptive study was undertaken in the Department of Oral and Maxillofacial Surgery, Al-Shaheed Ghazi Al-Hariry Hospital, Baghdad, Iraq from 1st January to 30th September 2015. This study included 45 patients with different forms of orofacial infections; data regarding age, gender, underlying cause, facial space involvement, presenting signs were collected through history, clinical examination and radiographs, incision and drainage with swab sample for culture and sensitivity test was performed. Results: Patients with orofacial infections showed a female to male ratio of 1.25:1. The mean age was 32.8 years. Most of the patients were in their 4th decade of life (27%). Most infections were odontogenic in origin (62%), the most common facial space involved was submandibular (65%), the most common isolated microorganism was Streptococcus pyogenes (59%), and most patients were treated using an extra-oral surgical approach (78%). Antibiotics to which bacterial isolated showed the most sensitivity were netilmicin, cefoperazone and rifampicin (91%). Pain and limitation of mouth opening gradually decreased in most of patients during the two weeks follow up period. Conclusion: Orofacial infections were more common in females, in the third and fourth decade of life, were odontogenic in origin, were mostly caused by Streptococcus pyogenes, and most isolates were susceptible to netilmicin, cefoperazone and rifampicin. Pain and trismus decreased over two weeks post-treatment.

Las infecciones orofaciales se consideran una de las infecciones más comunes y necesitan un tratamiento rápido y adecuado, ya que afectan una región muy delicada y se asocian con complicaciones graves que amenazan la vida. Las infecciones orofaciales pueden ser odontogénicas que se originan en los dientes y las estructuras asociadas, o no odontogénicas, no asociadas con los dientes, pueden afectar los espacios faciales y propagarse de un espacio a otro, por lo que un buen conocimiento sobre el diagnóstico y el tratamiento de estas infecciones es de suma importancia, y puede incluir tratamiento no quirúrgico y quirúrgico. El objetivo de nuestro estudio fue determinar la causa más común de infecciones orofaciales, los microorganismos bacterianos más comunes y su susceptibilidad a los antibióticos. Material y Métodos: se realizó un estudio descriptivo en el Departamento de Cirugía Oral y Maxilofacial, Hospital Al-Shaheed Ghazi Al-Hariry, Bagdad, Iraq del 1 de enero al 30 de septiembre de 2015. Este estudio incluyó a 45 pacientes con diferentes formas de infecciones orofaciales; Se recopilaron datos sobre edad, sexo, causa subyacente, afectación del espacio facial, signos de presentación a través de la historia, examen clínico y radiografías, incisión y drenaje con muestra de hisopo para cultivo y prueba de sensibilidad. Resultado: Los pacientes con infecciones orofaciales mostraron una relación mujer/hombre de 1.25: 1. La edad media fue de 32,8 años. La mayoría de los pacientes estaban en su cuarta década de vida (27%). La mayoría de las infecciones fueron de origen odontogénico (62%), el espacio facial más común involucrado fue submandibular (65%), el microorganismo aislado más común fue Streptococcus pyogenes (59%), y la mayoría de los pacientes fueron tratados con un abordaje quirúrgico extraoral (78%). Los antibióticos a los que las bacterias aisladas mostraron mayor sensibilidad fueron netilmicina, cefoperazona y rifampicina (91%). El dolor y la limitación de la apertura de la boca disminuyeron gradualmente en la mayoría de los pacientes durante el período de seguimiento de dos semanas. Conclusión:Las infecciones orofaciales fueron más comunes en las mujeres, en la tercera y cuarta década de la vida, fueron de origen odontogénico, fueron causadas principalmente por Streptococcus pyogenes y la mayoría de los aislamientos fueron susceptibles a la netilmicina, cefoperazona y rifampicina. El dolor y el trismo disminuyeron durante las dos semanas posteriores al tratamiento.