Posts filed under ‘Bacterias’

Imported toxin-producing cutaneous diphtheria— Minnesota, Washington, and New Mexico, 2015–2018.

MMWR Morb Mortal Wkly Rep March 29, 2019 V.68 N.12 P.281-284

Griffith J et al.

Summary

What is already known about this topic?

Cutaneous diphtheria has not been notifiable in the United States since 1980, and U.S. disease incidence data are limited.

What is added by this report?

Toxin-producing Corynebacterium diphtheriae was identified in cutaneous wounds from four U.S. residents after return from international travel. Public health response for toxin-producing diphtheria includes treating patients, providing chemoprophylaxis to close contacts, testing patients and close contacts for C. diphtheriae carriage, and providing diphtheria toxoid–containing vaccine to incompletely immunized patients and close contacts.

What are the implications for public health practice?

Cutaneous toxin-producing diphtheria should be considered in travelers with wound infections who have returned from countries with endemic disease to permit prompt public health response and prevent disease transmission.

 

From September 2015 to March 2018, CDC confirmed four cases of cutaneous diphtheria caused by toxin-producing Corynebacterium diphtheriae in patients from Minnesota (two), Washington (one), and New Mexico (one). All patients had recently returned to the United States after travel to countries where diphtheria is endemic. C. diphtheriae infection was not clinically suspected in any of the patients; treating institutions detected the organism through matrix-assisted laser desorption/ionization–time-of-flight mass spectrometry (MALDI-TOF) testing of wound-derived coryneform isolates. MALDI-TOF is a rapid screening platform that uses mass spectrometry to identify bacterial pathogens. State public health laboratories confirmed C. diphtheriae through culture and sent isolates to CDC’s Pertussis and Diphtheria Laboratory for biotyping, polymerase chain reaction (PCR) testing, and toxin production testing. All isolates were identified as toxin-producing C. diphtheriae. The recommended public health response for cutaneous diphtheria is similar to that for respiratory diphtheria and includes treating the index patient with antibiotics, identifying close contacts and observing them for development of diphtheria, providing chemoprophylaxis to close contacts, testing patients and close contacts for C. diphtheriae carriage in the nose and throat, and providing diphtheria toxoid–containing vaccine to incompletely immunized patients and close contacts. This report summarizes the patient clinical information and response efforts conducted by the Minnesota, Washington, and New Mexico state health departments and CDC and emphasizes that health care providers should consider cutaneous diphtheria as a diagnosis in travelers with wound infections who have returned from countries with endemic diphtheria.

FULL TEXT

https://www.cdc.gov/mmwr/volumes/68/wr/mm6812a2.htm?s_cid=mm6812a2_w

PDF

https://www.cdc.gov/mmwr/volumes/68/wr/pdfs/mm6812a2-H.pdf

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April 18, 2019 at 9:57 am

RECOMENDACIONES PARA LA PREVENCIÓN DE INFECCIONES ASOCIADAS A ARTOPLASTIA ELECTIVA EN ADULTOS

Medicina (Buenos Aires). 2017 V.77 N.2 P.143-157

JUAN CARLOS CHULUYÁN1*, ANDREA VILA2*, ANA LAURA CHATTÁS3*, MARCELO MONTERO3*, CLAUDIA PENSOTTI4*+, CLAUDIA TOSELLO5*, MARISA SÁNCHEZ6*, CECILIA VERA OCAMPO7*, GUILLERMINA KREMER8*, RODOLFO QUIRÓS8*, GUILLERMO A. BENCHETRIT9*,CAROLINA FERNANDA PÉREZ10*, ANA LAURA TERUSI11*, FRANCISCO NACINOVICH12*

1 Grupo de Trabajo Infectología, Hospital General de Agudos Dr. T. Álvarez,

2 Servicio de Infectología, Hospital Italiano de Mendoza,

3 Hospital General de Agudos Dr. Pirovano,

4 Clínica Monte Grande,

5 Hospital de Clínicas José de San Martín, UBA,

6 Hospital Italiano de Buenos Aires,

7 Sanatorio Dupuytren,

8 Hospital Universitario Austral,

9 Instituto de Investigaciones Médicas A. Lanari, UBA,

10 Policlínico del Docente-Centro Médico Huésped,

11 Instituto César Milstein,

12 Instituto Cardiovascular de Buenos Aires, Centros Médicos Dr. Stamboulian, Argentina

Las infecciones del sitio quirúrgico que complican las cirugías ortopédicas con implante prolongan la estadía hospitalaria y aumentan tanto el riesgo de readmisión como el costo de la internación y la mortalidad. Las presentes recomendaciones están dirigidas a:

(i) optimizar el cumplimiento de normas y la incorporación de hábitos en cada una de las fases de la cirugía, detectando factores de riesgo para infecciones del sitio quirúrgico potencialmente corregibles o modificables; y

(ii) adecuar la profilaxis antibiótica preoperatoria y el cuidado intra y postoperatorio.

PDF

http://www.medicinabuenosaires.com/PMID/28463223.pdf

April 13, 2019 at 12:39 pm

2017 WSES and SICG guidelines on acute calcolous cholecystitis in elderly population

World J Emerg Surg. 2019 Mar 4;14:10.

Pisano M, Ceresoli M, Cimbanassi S, Gurusamy K, Coccolini F, Borzellino G, et al

Background

Gallstone disease is very common afflicting 20 million people in the USA. In Europe, the overall incidence of gallstone disease is 18.8% in women and 9.5% in men. The frequency of gallstones related disease increases by age. The elderly population is increasing worldwide.

Aim

The present guidelines aims to report the results of the World Society of Emergency Surgery (WSES) and Italian Surgical Society for Elderly (SICG) consensus conference on acute calcolous cholecystitis (ACC) focused on elderly population.

Material and methods

The 2016 WSES guidelines on ACC were used as baseline; six questions have been used to investigate the particularities in elderly population; the answers have been developed in terms of differences compared to the general population and to statements of the 2016 WSES Guidelines. The Consensus Conference discusses, voted, and modified the statements. International experts contributed in the elaboration of final statements and evaluation of the level of scientific evidences.

Results

The quality of the studies available decreases when we approach ACC in elderly. Same admission laparoscopic cholecystectomy should be suggested for elderly people with ACC; frailty scores as well as clinical and surgical risk scores could be adopted but no general consensus exist. The role of cholecystostomy is uncertain.

Discussion and conclusions

The evaluation of pro and cons for surgery or for alternative treatments in elderly suffering of ACC is more complex than in young people; also, the oldest old age is not a contraindication for surgery; however, a larger use of frailty and surgical risk scores could contribute to reach the best clinical judgment by the surgeon. The present guidelines offer the opportunity to share with the scientific community a baseline for future researches and discussion.

FULL TEXT

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6399945/

PDF

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6399945/pdf/13017_2019_Article_224.pdf

April 3, 2019 at 8:37 am

Microscopic Examination and Broth Culture of Cerebrospinal Fluid in Diagnosis of Meningitis

Journal of Clinical Microbiology June 1998 V.36 N.6 P.1617-1620

Dunbar SA et al

We reviewed the results of microscopic Gram stain examination and routine culture for 2,635 cerebrospinal fluid (CSF) samples processed in an adult hospital microbiology laboratory during 55 months. There were 56 instances of bacterial or fungal meningitis (16 associated with central nervous system [CNS] shunt infection), four infections adjacent to the subarachnoid space, four cases of sepsis without meningitis, and an additional 220 CSF specimens with positive cultures in which the organism isolated was judged to be a contaminant. Because 121 of these contaminants were isolated in broth only, elimination of the broth culture would decrease unnecessary work. However, 25% of the meningitis associated with CNS shunts would have been missed by this practice. The most common cause of meningitis was Cryptococcus neoformans, followed by Streptococcus pneumoniaeand Neisseria meningitidis. In 48 of 56 (88%) of cases, examination of the Gram-stained specimen revealed the causative organism. If patients who had received effective antimicrobial therapy prior to lumbar puncture are excluded, the CSF Gram stain is 92% sensitive. Microscopic examination incorrectly suggested the presence of organisms in only 3 of 2,635 (0.1%) CSF examinations. Thus, microscopic examination of Gram-stained, concentrated CSF is highly sensitive and specific in early diagnosis of bacterial or fungal meningitis.

Bacterial meningitis is a life-threatening infection. Although patients typically present with fever, headache, stiff neck, and altered mental status, these symptoms may be subtle in elderly or immunocompromised persons (1, 6, 7,18). Early implementation of appropriate antimicrobial therapy requires prompt identification of the infecting pathogen. Although culture is considered to be the definitive diagnostic test, microscopic examination of a Gram-stained specimen of cerebrospinal fluid (CSF) may provide immediate information about the causative microorganism. Previous studies have suggested that the sensitivity of this technique ranges from 60 to 90% and the specificity approaches 100% (1, 5,6, 8, 12, 18). Scheld concludes that the overall sensitivity is only 75% (14). It is often unclear whether earlier studies have stratified patients based upon their having received prior antimicrobial therapy. Further, the role of semiquantitative assessment of leukocytes (WBC) by microscopic examination as an indicator of infection (8, 12) is uncertain. The value of using broth culture in various populations is also questionable (9, 10,17). In the present study, we reviewed the results of microscopic examination and routine culture of 2,635 CSF specimens to establish the predictive value of the cytocentrifuged Gram stain and the usefulness of broth culture in a veteran population.

FULL TEXT

https://jcm.asm.org/content/36/6/1617

PDF

https://jcm.asm.org/content/jcm/36/6/1617.full.pdf

April 2, 2019 at 6:15 pm

Predictive Value of Cerebrospinal Fluid (CSF) Lactate Level vs CSF-Blood Glucose Ratio for the Diagnosis of Bacterial Meningitis Following Neurosurgery

Clinical Infectious Diseases July 1999 V.29 N.1 P.69-74

Stephen L. Leib; Remy Boscacci; Othmar Gratzl; Werner Zimmerli

The value of cerebrospinal fluid (CSF) lactate level and CSF/blood glucose ratio for the identification of bacterial meningitis following neurosurgery was assessed in a retrospective study. During a 3-year period, 73 patients fulfilled the inclusion criteria and could be grouped by preset criteria in one of three categories: proven bacterial meningitis (n = 12), presumed bacterial meningitis (n = 14), and nonbacterial meningeal syndrome (n = 47). Of 73 patients analyzed, 45% were treated with antibiotics and 33% with steroids at the time of first lumbar puncture. CSF lactate values (cutoff, 4 mmol/L), in comparison with CSF/blood glucose ratios (cutoff, 0.4), were associated with higher sensitivity (0.88 vs. 0.77), specificity (0.98 vs. 0.87), and positive (0.96 vs. 0.77) and negative (0.94 vs. 0.87) predictive values. In conclusion, determination of the CSF lactate value is a quick, sensitive, and specific test to identify patients with bacterial meningitis after neurosurgery.

FULL TEXT

https://academic.oup.com/cid/article/29/1/69/323396

PDF (CLIC en PDF)

April 2, 2019 at 6:13 pm

Characterization of Chemical Meningitis after Neurological Surgery

Clinical Infectious Diseases January 2001 V.32 N.2 P.179-185

Pierre Forgacs; Carl A. Geyer; Stephen R. Freidberg

We reviewed the records of 70 consecutive adult patients with meningitis after a neurosurgical procedure, to determine the characteristics that might help to distinguish a sterile postoperative chemical meningitis from bacterial infection. The spinal fluid profiles in bacterial and chemical meningitis are similar. The exceptions are that a spinal fluid white blood cell count >7500/µL (7500 × 106/L) and a glucose level of <10 mg/dL were not found in any case of chemical meningitis. The clinical setting and clinical manifestations were distinct enough that no antibiotic was administered after lumbar puncture to 30 (43%) of the 70 patients with postoperative meningitis. Chemical meningitis was infrequent after surgery involving the spine and sinuses. Patients with chemical meningitis did not have purulent wound drainage or significant wound erythema or tenderness, coma, new focal neurological findings, or onset of a new seizure disorder. They rarely had temperatures >39.4°C or cerebrospinal fluid rhinorrhea or otorrhea.

FULL TEXT

https://academic.oup.com/cid/article/32/2/179/319157

PDF (CLIC en PDF)

April 2, 2019 at 6:10 pm

Meningitis postquirúrgica. Características diferenciales de la meningitis aséptica post-quirúrgica

Neurocirugía ABRIL 2009 V.20 N.2

Ramos-Martínez; T. de las Heras-Carballo; C. Fernández-Mateos*; L. de Reina*; T. Álvarez de Espejo-Montiel; N. Escamilla-Fernández; I. Sánchez-Romero** e I. Millán***

Servicios de Medicina Interna (Unidad de Infecciosas) Neurocirugía* y Microbiología**. Sección de Bioestadística***. Hospital Universitario Puerta de Hierro. Madrid.

Introducción

La meningitis postquirúrgica es una complicación infrecuente que se acompaña de un incremento de la estancia hospitalaria y de una elevada mortalidad. Algunos de estos casos no son debidos a una verdadera infección sino a una inflamación aséptica de las meninges denominada meningitis aséptica post-quirúrgica (MAPQ). La adecuada identificación de estos casos permitiría una mejor utilización de los fármacos antimicrobianos.

Material y métodos

Estudio retrospectivo de los pacientes con meningitis postquirúrgica en un hospital terciario durante 14 años comparando las características clínicas de los pacientes con meningitis bacteriana postquirúrgica (MBP) frente a las de pacientes con MAPQ

Resultados

Durante el período analizado se identificaron 35 pacientes (71%) con MBP y 14 pacientes (29%) con MAPQ. La edad media de los pacientes con MBP fue similar a la de los pacientes con MAPQ. Hubo predominio de varones en el grupo de MBP (71%) en relación con los pacientes con MAPQ (36%, p=0,020). La proporción de pacientes con hemorragia intracraneal tendió a ser más frecuente en pacientes que posteriormente desarrollaron MAPQ (9 pacientes, 64 %) que en los pacientes con MBP (12 casos, 34%, p=0,055). Los pacientes sometidos a craneotomía posterior (p=0,092) y los que recibían tratamiento esteroideo (p=0,051) mostraron una mayor tendencia a padecer MAPQ. Siete pacientes MBP (20%) presentaron un recuento celular superior a 5000 células/mm3 en el LCR, cifra no encontrada en ningún caso de MAPQ. No se detectaron diferencias en la glucorraquia y proteinorraquia entre ambos grupos. La bacterias más frecuentemente aisladas fueron Staphylococcus coagulasa negativa y S. aureus. En 5 pacientes (14%) se aislaron bacilos gramnegativos no fermentadores (Pseudomonas aeruginosa y Acinetobacter spp). No hubo ningún fallecimiento atribuido a meningitis postquirúrgica.

Conclusión

Los pacientes sometidos a neurocirugía que fueron ingresados por hemorragia cerebral, intervenidos de la fosa posterior o tratados con esteroides presentan una mayor tendencia a presentar MAPQ. Los recuentos celulares en LCR elevados (superiores a 5000 células /mm3) sugieren la existencia de MBP.

PDF

http://scielo.isciii.es/pdf/neuro/v20n2/2.pdf

April 2, 2019 at 6:08 pm

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