RESUMEN
For acute medicine physicians, distinguishing between asymptomatic bacteriuria (ABU) and clinically relevant urinary tract infections (UTI) is challenging, resulting in overtreatment of ABU and under-recognition of urinary-source bacteraemia without genitourinary symptoms (USB). We conducted a retrospective analysis of ED encounters in a university hospital between October 2013 and September 2018 who met the following inclusion criteria: Suspected UTI with simultaneous collection of paired urinary cultures and blood cultures (PUB) and determination of Procalcitonin (PCT). We sought to develop a simple algorithm based on clinical signs and PCT for the management of suspected UTI. Individual patient presentations were retrospectively evaluated by a clinical "triple F" algorithm (F1 ="fever", F2 ="failure", F3 ="focus") supported by PCT and PUB. We identified 183 ED patients meeting the inclusion criteria. We introduced the term UTI with systemic involvement (SUTI) with three degrees of diagnostic certainty: bacteremic UTI (24.0%; 44/183), probable SUTI (14.2%; 26/183) and possible SUTI (27.9%; 51/183). In bacteremic UTI, half of patients (54.5%; 24/44) presented without genitourinary symptoms. Discordant bacteraemia was diagnosed in 16 patients (24.6% of all bacteremic patients). An alternative focus was identified in 67 patients, five patients presented with S. aureus bacteremia. 62 patients were diagnosed with possible UTI (n = 20) or ABU (n = 42). Using the proposed "triple F" algorithm, dichotomised PCT of < 0.25 pg/ml had a negative predictive value of 88.7% and 96.2% for bacteraemia und accordant bacteraemia respectively. The application of the algorithm to our cohort could have resulted in 33.3% reduction of BCs. Using the diagnostic categories "possible" or "probable" SUTI as a trigger for initiation of antimicrobial treatment would have reduced or streamlined antimicrobial use in 30.6% and 58.5% of cases, respectively. In conclusion, the "3F" algorithm supported by PCT and PUB is a promising diagnostic and antimicrobial stewardship tool.
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Sangre/microbiología , Polipéptido alfa Relacionado con Calcitonina/metabolismo , Infecciones Urinarias/diagnóstico , Orina/microbiología , Anciano , Anciano de 80 o más Años , Algoritmos , Bacteriemia/microbiología , Bacteriuria/diagnóstico , Cultivo de Sangre/métodos , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Staphylococcus aureus/aislamiento & purificación , Infecciones Urinarias/metabolismoRESUMEN
BACKGROUND: Because insufficient data are available, the overall number of patients treated in German emergency departments can only be estimated. It is evident, however, that case numbers have been rising steadily in recent years, and that a lack of capacity is now leading with increasing freuqency to forced centralized allocation of patients by the emergency medical services (EMS) to emergency departments that are, officially, temporarily "closed". METHODS: Trends in patient allocation of this type in greater Munich, Germany, over the years 2013-2019 were analyzed for the first time on the basis of data from 904 997 cases treated by the emergency rescue services. RESULTS: From 2014 to 2019, the number of forced centralized patient allocations rose approximately by a factor of nine, from 70 to 634 per 100 000 persons per year. In the same period, the overall number of cases treated by the emergency rescue services rose by 14.5%. Peak values for forced centralized allocations were reached in the first quarter of each calendar year (2015: 1579, 2017: 2435, 2018: 3161, 2019: 3990). Of all medical specialties, internal medicine was the most heavily affected (more than 59% of the total). Especially in the years 2017-2019, the free availability of internal medicine declined in hospitals participating in the common greater Munich reporting system. CONCLUSION: The reasons for the sharp rise in forced centralized allocations are unclear. This observed trend seems likely to persist over the coming years, in view of the current staff shortage, the aging population, and diminishing hospital capacities. The relevant decision-makers must collaborate to create emergency plans that will prevent care bottlenecks so that patients will not be endangered.
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Servicios Médicos de Urgencia , Servicio de Urgencia en Hospital , Asignación de Recursos , Anciano , Urgencias Médicas , Alemania/epidemiología , HumanosAsunto(s)
Aorta Torácica , Enfermedades de la Aorta/etiología , Betacoronavirus , Infecciones por Coronavirus/complicaciones , Neumonía Viral/complicaciones , Trombosis/etiología , Anciano de 80 o más Años , Enfermedades de la Aorta/diagnóstico , COVID-19 , Diagnóstico Diferencial , Femenino , Humanos , Pandemias , SARS-CoV-2 , Trombosis/diagnóstico , Tomografía Computarizada por Rayos XRESUMEN
We report a case of a fatal Strongyloides stercoralis hyperinfection syndrome (SHS) in a migrant from Kenya, who had been living in Germany for three decades. A short-course oral steroid treatment for Chronic Obstructive Pulmonary Disease (COPD) exacerbation had been administered four weeks prior to the presentation. The initial clinical and radiological findings suggested a mechanical small bowel obstruction as a cause of ileus. Our case highlights the importance of maintaining a high index of suspicion for strongyloidiasis in patients from endemic areas even years after they left the country of origin. It demonstrates that even a five-day course of prednisolone is able to trigger SHS in patients with underlying strongyloidiasis. History of frequent previous administration of oral prednisolone for COPD exacerbations in our case raises the question why and how the last steroid regimen provoked SHS. SHS can present with multiple gastrointestinal symptoms including ileus and the absence of eosinophilia during the whole course of the disease should not lower the level of suspicion in the appropriate clinical setting.
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Ileus/parasitología , Prednisolona/efectos adversos , Strongyloides stercoralis/aislamiento & purificación , Estrongiloidiasis/diagnóstico , Animales , Femenino , Humanos , Persona de Mediana Edad , Prednisolona/administración & dosificación , Enfermedad Pulmonar Obstructiva Crónica/tratamiento farmacológico , Estrongiloidiasis/complicaciones , Estrongiloidiasis/diagnóstico por imagenRESUMEN
Nontraumatic myelopathy causes severe morbidity and is not uncommon in Africa. Clinically, patients often present with paraplegia, and extrinsic cord compression and transverse myelitis are most common causes. Data on exact pathogenesis are scanty because of limitations in diagnostic methods. In Queen Elizabeth Central Hospital, Blantyre, Malawi, we recorded consecutive patients presenting with nontraumatic paraplegia for maximally 6 months between January and July 2010 and from March to December 2011. The diagnostic workup included imaging and examining blood, stool, urine, sputum, and cerebrospinal fluid (CSF) samples for infection. After discharge, additional diagnostic tests, including screening for virus infections, borreliosis, syphilis, and schistosomiasis, were carried out in the Netherlands. The clinical diagnosis was, thus, revised in retrospect with a more accurate final differential diagnosis. Of 58 patients included, the mean age was 41 years (range, 12-83 years) and the median time between onset and presentation was 18 days (range, 0-121 days), and of 55 patients tested, 23 (42%) were HIV positive. Spinal tuberculosis (n = 24, 41%), tumors (n = 16, 28%), and transverse myelitis (n = 6, 10%) were most common; in six cases (10%), no diagnosis could be made. The additional tests yielded evidence for CSF infection with Schistosoma, Treponema pallidum, Epstein-Barr virus (EBV), HHV-6, HIV, as well as a novel cyclovirus. The diagnosis of the cause of paraplegia is complex and requires access to an magnetic resonance imaging (MRI) scan and other diagnostic (molecular) tools to demonstrate infection. The major challenge is to confirm the role of detected pathogens in the pathophysiology and to design an effective and affordable diagnostic approach.
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Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Enfermedades de la Médula Espinal/epidemiología , Enfermedades de la Médula Espinal/etiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Anticuerpos Anti-VIH/sangre , Humanos , Malaui/epidemiología , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Prospectivos , Adulto JovenRESUMEN
Bloodstream infections (BSI) are associated with high mortality. Therefore, reliable methods of detection are of paramount importance. Efficient strategies to improve diagnostic yield of bacteraemia within the emergency department (ED) are needed. We conducted a retrospective analysis of all ED encounters in a high-volume, city-centre university hospital within Germany during a five-year study period from October 2013 to September 2018. A time-series analysis was conducted for all ED encounters in which blood cultures (BCs) were collected. BC detection rates and diagnostic yield of community-onset bacteraemia were compared during the study period (which included 45 months prior to the start of a new diagnostic Antibiotic Stewardship (ABS) bundle and 15 months following its implementation). BCs were obtained from 5,191 out of 66,879 ED admissions (7.8%). Bacteraemia was detected in 1,013 encounters (19.5% of encounters where BCs were obtained). The overall yield of true bacteraemia (defined as yielding clinically relevant pathogens) was 14.4%. The new ABS-related diagnostic protocol resulted in an increased number of hospitalised patients with BCs collected in the ED (18% compared to 12.3%) and a significant increase in patients with two or more BC sets taken (59% compared to 25.4%), which resulted in an improved detection rate of true bacteraemia (2.5% versus 1.8% of hospital admissions) without any decrease in diagnostic yield. This simultaneous increase in BC rates without degradation of yield was a valuable finding that indicated success of this strategy. Thus, implementation of the new diagnostic ABS bundle within the ED, which included the presence of a skilled infectious disease (ID) team focused on obtaining BCs, appeared to be a valuable tool for the accurate and timely detection of community-onset bacteraemia.
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Programas de Optimización del Uso de los Antimicrobianos/métodos , Bacteriemia/diagnóstico , Servicio de Urgencia en Hospital/normas , Adulto , Anciano , Antibacterianos/uso terapéutico , Cultivo de Sangre , Farmacorresistencia Microbiana/genética , Femenino , Alemania , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Estudios RetrospectivosRESUMEN
OBJECTIVES: To determine the influence of local spread of clonal strains and testing of follow-up isolates on categorical (CA) and essential agreement rates (EA) of common colistin (COL) drug susceptibility testing methods with the broth microdilution (BMD) reference method. METHODS: COL MICs were determined for 178 bacterial isolates (Enterobacteriaceae, n = 97; Pseudomonas aeruginosa, n = 81) collected within one year from 64 patients by BMD according to ISO standard 20776-1 (reference method), the SensiTest BMD panel (ST), agar dilution (AD), the VITEK 2 instrument, and gradient diffusion (GD) using antibiotic strips of two and Muller-Hinton agar plates of three manufacturers. CA and EA with BMD were calculated for all isolates and compared to the subset of 68 unique isolates. RESULTS: CA ranges were 79.4% to 94.1% for the unique isolateq panel and 89.9% to 96.1% for all tested isolates. EA ranges were 64.7% to 86.8% and 67.4% to 91.0%, respectively. In both panels, EA for all GD assays was lower than 90%. Both lower and higher EA values ranging from-18.3% (MTS on BD agar) to + 6.3% (AD, Vitek 2) were observed in the full one-year sample. Acquisition of colistin resistance under therapy was observed for 3 patients. CONCLUSIONS: i) Repeat testing and local spread of clonal strains can positively or negatively affect CA and EA, ii) CA is more robust towards local influences than EA, iii) EA of GD and AD methods for COL with the reference BMD method is insufficient.
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Colistina/farmacología , Farmacorresistencia Bacteriana , Infecciones por Enterobacteriaceae/epidemiología , Enterobacteriaceae , Infecciones por Pseudomonas/epidemiología , Pseudomonas aeruginosa , Enterobacteriaceae/crecimiento & desarrollo , Enterobacteriaceae/aislamiento & purificación , Humanos , Pruebas de Sensibilidad Microbiana , Pseudomonas aeruginosa/crecimiento & desarrollo , Pseudomonas aeruginosa/aislamiento & purificaciónRESUMEN
BACKGROUND: This study investigated predominant microorganisms causing community-onset bacteraemia at the medical emergency department (ED) of a tertiary-care university hospital in Germany from 2013 to 2018 and their antimicrobial susceptibility patterns. METHODS: Antimicrobial resistance patterns in patients with positive blood cultures presenting to an internal medicine ED were retrospectively analysed. RESULTS: Blood cultures were obtained at 5191 of 66,879 ED encounters, with 1013 (19.5%) positive results, and true positive results at 740 encounters (diagnostic yield, 14.3%). The most frequently isolated relevant microorganisms were Enterobacterales (n = 439, 59.3%), Staphylococcus aureus (n = 92, 12.4%), Streptococcus pneumoniae (n = 34, 4.6%), Pseudomonas aeruginosa (n = 32, 4.3%), Streptococcus pyogenes (n = 16, 2.2%), Enterococcus faecalis (n = 18, 2.4%), and Enterococcus faecium (n = 12, 1.6%). Antimicrobial susceptibility testing revealed a high proportion of resistance against ampicillin-sulbactam in Enterobacterales (42.2%). The rate of methicillin-resistant Staphylococcus aureus was low (0.4%). Piperacillin-tazobactam therapy provided coverage for 83.2% of all relevant pathogens using conventional breakpoints. Application of the new European Committee on Antimicrobial Susceptibility Testing (EUCAST) recommendations increased the percentage of susceptible isolates to high-dose piperacillin-tazobactam to 92.8% (p < 0.001). Broad-spectrum carbapenems would only cover an additional 4.8%. The addition of vancomycin or linezolid extended coverage by just 1.7%. CONCLUSIONS: Using an ureidopenicillin-beta-lactamase inhibitor combination at the high dose suggested by the new EUCAST recommendations provided nearly 93% coverage for relevant pathogens in patients with suspected bloodstream infection in our cohort. This might offer a safe option to reduce the empiric use of carbapenems. Our data support the absence of a general need for glycopeptides or oxazolidinones in empiric treatment.
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Antibacterianos/uso terapéutico , Bacteriemia/tratamiento farmacológico , Carbapenémicos/uso terapéutico , Farmacorresistencia Bacteriana/efectos de los fármacos , Piperacilina/uso terapéutico , Tazobactam/uso terapéutico , Antibacterianos/efectos adversos , Carbapenémicos/efectos adversos , Servicio de Urgencia en Hospital , Enterobacteriaceae/efectos de los fármacos , Enterobacteriaceae/aislamiento & purificación , Alemania , Hospitales Universitarios , Humanos , Pruebas de Sensibilidad Microbiana , Piperacilina/efectos adversos , Pseudomonas aeruginosa/efectos de los fármacos , Pseudomonas aeruginosa/aislamiento & purificación , Estudios Retrospectivos , Staphylococcus aureus/efectos de los fármacos , Staphylococcus aureus/aislamiento & purificación , Tazobactam/efectos adversos , Resultado del TratamientoRESUMEN
OBJECTIVES: To determine the spectrum of infections with multidrug-resistant Gram-negative bacteria (MDR-GNB) and the clinical impact of the newly available betalactam/betalactamase inhibitor combinations ceftolozane/tazobactam and ceftazidime/avibactam in a German academic tertiary care center. METHODS: Retrospective analysis. RESULTS: Between September 1, 2015 and August 31, 2016, 119 individual patients (0.22% of all hospital admissions) were colonized or infected with carbapenem-resistant MDR-GNB. The species distribution was Pseudomonas aeruginosa, n = 66; Enterobacteriaceae spp., n = 44; and Acinetobacter baumannii, n = 18. In 9 patients, carbapenem-resistant isolates belonging to more than one species were detected. Infection was diagnosed in 50 patients (total: 42.0%; nosocomial pneumonia: n = 23, 19.3%; bloodstream infection: n = 11, 9.2%). Antimicrobial treatment with broad-spectrum antibiotics prior to detection of a carbapenem-resistant isolate was documented in 105 patients (88.2%, prior administration of carbapenems: 62.2%). Nosocomial transmission was documented in 29 patients (24.4%). In 26 patients (21.8%), at least one carbapenem-susceptible, third-generation cephalosporin non-susceptible isolate was documented prior to detection of a carbapenem-resistant isolate belonging to the same species (median 38 days, IQR 23-78). 12 patients (10.1%) had documented previous contact to the healthcare system in a country with high burden of carbapenemase-producing strains. Genes encoding carbapenemases were detected in 60/102 patient isolates (58.8%; VIM-2, n = 25; OXA-48, n = 21; OXA-23-like, n = 10). Susceptibility to colistin was 94.3%. Ceftolozane/tazobactam and ceftazidime/avibactam were administered to 3 and 5 patients, respectively (in-hospital mortality: 66% and 100%). Development of drug-resistance under therapy was observed for both antimicrobials. CONCLUSIONS: i) The major predisposing factors for acquisition of carbapenem-resistant MDR-GNB were selective pressure due to preceding antimicrobial therapy and nosocomial transmission. ii) Colistin remains the backbone of antimicrobial chemotherapy for infections caused by carbapenem-resistant MDR-GNB. iii) Novel ß-lactam/ß-lactamase inhibitor combinations are of limited usefulness in our setting because of the high prevalence of Ambler class B carbapenemases and the emergence of nonsusceptibility under therapy.
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Carbapenémicos/farmacología , Infección Hospitalaria , Bacterias Gramnegativas/efectos de los fármacos , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Gramnegativas/microbiología , Resistencia betalactámica , Inhibidores de beta-Lactamasas/farmacología , Antibacterianos/farmacología , Antibacterianos/uso terapéutico , Femenino , Alemania/epidemiología , Bacterias Gramnegativas/clasificación , Bacterias Gramnegativas/genética , Infecciones por Bacterias Gramnegativas/tratamiento farmacológico , Infecciones por Bacterias Gramnegativas/transmisión , Hospitales Universitarios , Humanos , Masculino , Pruebas de Sensibilidad Microbiana , Prevalencia , Estudios Retrospectivos , Resultado del Tratamiento , Inhibidores de beta-Lactamasas/uso terapéuticoRESUMEN
BACKGROUND: Inappropriate use of broad-spectrum antimicrobials affects adversely both the individual patient and the general public. The aim of the study was to identify patients at risk for excessively prolonged carbapenem treatment in the ICU as a target for antimicrobial stewardship interventions. METHODS: Case-control study in a network of 11 ICUs of a university hospital. Patients with uninterrupted meropenem therapy (MT) > 4 weeks were compared to controls. Controls were defined as patients who stayed on the ICU > 4 weeks and received meropenem for ≤ 2 weeks. Associations between case-control status and potential risk factors were determined in a multivariate logistic regression model. RESULTS: Between 1st of January 2013 and 31st of December 2015, we identified 36 patients with uninterrupted MT > 4 weeks. Patients with prolonged MT were more likely to be surgical patients (72.2% of cases vs. 31.5% of controls; p ≤ 0.001) with peritonitis being the most common infection (n = 16, 44.4%). In the multivariate logistic regression model colonization with multidrug-resistant (MDR) Gram-negative bacteria (OR 7.52; 95% CI 1.88-30.14, p = 0.004) and the type of infection (peritonitis vs. pneumonia: OR 16.96, 95% CI 2.95-97.49) were associated with prolonged MT. CONCLUSION: Surgical patients with peritonitis and patients with known colonization with MDR Gram-negative bacteria are at risk for excessively prolonged carbapenem therapy and represent an important target population for antimicrobial stewardship interventions.
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Antibacterianos/administración & dosificación , Infecciones por Bacterias Gramnegativas/tratamiento farmacológico , Mediastinitis/tratamiento farmacológico , Peritonitis/tratamiento farmacológico , Neumonía/tratamiento farmacológico , Tienamicinas/administración & dosificación , Anciano , Estudios de Casos y Controles , Farmacorresistencia Bacteriana Múltiple , Femenino , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Gramnegativas/microbiología , Humanos , Unidades de Cuidados Intensivos , Tiempo de Internación , Masculino , Mediastinitis/epidemiología , Mediastinitis/microbiología , Meropenem , Persona de Mediana Edad , Oportunidad Relativa , Peritonitis/epidemiología , Peritonitis/microbiología , Neumonía/epidemiología , Neumonía/microbiología , Factores de Riesgo , Factores de TiempoRESUMEN
BACKGROUND: An algorithm for distinguishing invasive pulmonary aspergillosis (IPA) in critically ill patients (AspICU) has been proposed but not tested. METHODS: This was a prospective observational study applying the AspICU protocol to patients with positive Aspergillus culture (PAC group) and those with negative aspergillus culture but positive galactomannan test in respiratory tract samples (only positive galactomannan (OPG group)). Patients underwent a standardized diagnostic workup with bronchoscopy, computed tomography (CT), and galactomannan determination in serum and bronchoalveolar lavage fluid (BALF). RESULTS: We included 85 patients in the study. Of these, 43 had positive aspergillus cultures and 42 patients had only a positive galactomannan test. There were no statistically significant differences in baseline characteristics, underlying conditions or ICU scores between the two groups. The galactomannan titre in BALF was significantly higher in the positive aspergillus culture (PAC) group (enzyme immunoassay (EIA) 5.9, IQR 3.2-5.7) than in the OPG group (EIA 1.7, IQR 0.9-4.5) (p < 0.001). Classic features of IPA were detected on CT in 37.5 % and 36.6 % of patients in the PAC and OPG groups, respectively. There were no statistically significant differences between the PAC and the OPG group in relation to AspICU or European Organization for the Research and Treatment of Cancer (EORTC) criteria. A positive aspergillus culture was a stronger trigger for initiating antimycotic treatment than positive BALF galactomannan: 88.4 % of patients in the PAC group were regarded by clinicians as having IPA and received antimycotic treatment as opposed to 59.5 % in the OPG group (p = 0.002). The 180-day mortality was 58.1 % in the PAC group and 59.5 % in the OPG group. CONCLUSIONS: The inclusion of BALF galactomannan as an additional entry criterion for the AspICU clinical algorithm could increase the diagnostic sensitivity for IPA in ICU patients. TRIAL REGISTRATION: The study was registered at ClinicalTrials.gov (registration number NCT01866020 ) on 27 May 2013.
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Enfermedad Crítica/terapia , Unidades de Cuidados Intensivos , Mananos/farmacología , Mananos/uso terapéutico , Aspergilosis Pulmonar/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Galactosa/análogos & derivados , Humanos , Estudios Prospectivos , Aspergilosis Pulmonar/mortalidad , Irrigación TerapéuticaRESUMEN
PURPOSE: This study aimed at assessing the burden and spectrum of infectious diseases (ID) in a Metropolitan population in Germany. METHODS: A discharge database using ICD-10 codes enabled the identification of hospitalizations with infection-related diagnoses. All hospital admissions between 2009 and 2014 were analysed from 9 municipal hospitals serving approximately one-third of an urban population of 3.5 million people. RESULTS: We identified 114,168 admissions with a primary (first-listed) ID diagnosis and 220,483 admissions with any-listed ID diagnosis, accounting for 8.9 % [95 % confidence interval (CI) 8.9-9.0 %] and 17.2 % (95 % CI 17.1-17.3) of all 1,284,559 admissions, respectively. Annually, 439,837 bed-days (range 413,707-488,520) were occupied by patients with an ID diagnosis, utilizing 22.8 % of total bed capacity. The median length of stay for patients with primary ID diagnosis and secondary ID diagnosis was 6 days (IQR 3-11) and 10 days (IQR 5-19), respectively. The most common diagnosis across all age groups was "pneumonia" (22.8 and 16.2 % of ID admissions as primary and secondary diagnosis, respectively). In-hospital mortality was 6.8 % (95 % CI 6.6-6.9) and 8.9 % (95 % CI 8.7-9.1) for ID as primary and secondary diagnosis, respectively. CONCLUSION: Infectious diseases contribute significantly to the overall burden of disease in a health system caring for an urban German population. In view of the magnitude of ID's contribution, establishing more specialists in ID medicine and adjusting the reimbursements for managing infection-related admissions should be made a public health priority in Germany.
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Enfermedades Transmisibles/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Berlin/epidemiología , Niño , Preescolar , Femenino , Servicios de Salud , Administración de los Servicios de Salud , Hospitales Municipales , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Población Urbana , Adulto JovenRESUMEN
To determine the frequency, imaging characteristics, neuroanatomical distribution and dynamics of magnetic resonance imaging findings in HIV-associated cryptococcal meningitis in immunocompromised patients we compared patients without antiretroviral therapy with patients undergoing immune reconstitution. Neuroimaging and clinical data of 21 consecutive patients presenting to a German HIV centre in a 10-year period between 2005 and 2014 were reviewed. We identified eight patients with magnetic resonance imaging findings related to cryptococcal disease: five patients without antiretroviral therapy and three patients receiving effective antiretroviral therapy resulting in immune reconstitution. The pattern of magnetic resonance imaging manifestations was different in the two groups. In patients not on antiretroviral therapy, pseudocysts (n = 3) and lacunar ischaemic lesions (n = 2) were detected. Contrast-enhancing focal leptomeningeal and/or parenchymal lesions were found in all patients under immune reconstitution (n = 3). Magnetic resonance imaging lesions suggestive of leptomeningitis or meningoencephalitis were detected in all patients with a recurrence of cryptococcal meningitis under immune reconstitution, which differs from the classical magnetic resonance imaging findings in patients without antiretroviral therapy. In antiretroviral therapy-treated patients with past medical history of cryptococcal meningitis, detection of contrast-enhancing focal meningeal and/or parenchymal lesions should prompt further investigations for a recurrence of cryptococcal meningitis under immune reconstitution.
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Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico , Terapia Antirretroviral Altamente Activa/efectos adversos , Cryptococcus neoformans/aislamiento & purificación , Infecciones por VIH/diagnóstico , Síndrome Inflamatorio de Reconstitución Inmune/diagnóstico , Meningitis Criptocócica/diagnóstico , Infecciones Oportunistas Relacionadas con el SIDA/complicaciones , Infecciones Oportunistas Relacionadas con el SIDA/tratamiento farmacológico , Adulto , Fármacos Anti-VIH/uso terapéutico , Antifúngicos/uso terapéutico , Quistes Aracnoideos/patología , Femenino , Fluconazol/uso terapéutico , Alemania , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Humanos , Síndrome Inflamatorio de Reconstitución Inmune/complicaciones , Síndrome Inflamatorio de Reconstitución Inmune/tratamiento farmacológico , Huésped Inmunocomprometido , Imagen por Resonancia Magnética , Masculino , Meningitis Criptocócica/complicaciones , Meningitis Criptocócica/tratamiento farmacológico , Persona de Mediana Edad , NeuroimagenRESUMEN
OBJECTIVES: To investigate the diagnostic value of routine cryptococcal antigen (CRAG) testing in HIV-infected patients in a low prevalence setting. METHODS: Retrospective single centre cohort study of a 10-year period (2005-2014). RESULTS: 5461 patients tested for CRAG were included. Cryptococcal antigenaemia was found in 1.6% and 1.1% of patients with CD4 counts of ≤100/µl and 101-200/µl, respectively. The positive predictive values for identifying clinically relevant cryptococcal disease was 96% and 100%, respectively. Half of the patients had a non-specific presentation and median time-to-diagnosis was high (5 days, range 1-44 days). The median time-to-diagnosis in direct admissions to our centre with routine CRAG testing was significantly shorter: 1 day (range: 1-17) vs. 7 days (range: 2-44), p = 0.003. Prevalence of cryptococcal antigenaemia was 2.8% in patients with pneumocystis pneumonia and median time-to-diagnosis of cryptococcosis was significantly longer in this subgroup (15 days; range: 1-44 vs. 3 days; range: 1-17; p = 0.008). CRAG titres ≥1:512 were associated with disseminated disease (OR 21.3, p = 0.0008, 95% CI 1.64-277), however, 10% of patients with disseminated cryptococcosis had CRAG titres <1:16. CONCLUSION: Our data support routine CRAG testing in hospitalized HIV-infected patients with CD4 counts ≤200/µl, and/or pneumocystis pneumonia.
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Antígenos Fúngicos/sangre , Criptococosis/epidemiología , Infecciones por VIH/complicaciones , Adulto , Recuento de Linfocito CD4 , Criptococosis/diagnóstico , Pruebas Diagnósticas de Rutina/métodos , Pruebas Diagnósticas de Rutina/estadística & datos numéricos , Femenino , Alemania/epidemiología , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Retrospectivos , Adulto JovenRESUMEN
We report a case of a symptomatic relapse of HIV-related cryptococcal meningoencephalitis eight years after the first diagnosis on the background of immune reconstitution. The findings as well as the clinical course suggests a combination of smouldering localised infection and enhanced inflammatory reaction related to immune restoration due to antiretroviral therapy. A combination of antifungal and anti-inflammatory therapy resulted in clinical and radiological improvement. Our case challenges the concept that immune reconstitution inflammatory syndrome and microbiological relapse are dichotomous entities.
Asunto(s)
Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico , Cryptococcus neoformans/aislamiento & purificación , Síndrome Inflamatorio de Reconstitución Inmune/diagnóstico , Meningitis Criptocócica/diagnóstico , Infecciones Oportunistas Relacionadas con el SIDA/tratamiento farmacológico , Fármacos Anti-VIH/uso terapéutico , Antifúngicos/uso terapéutico , Terapia Antirretroviral Altamente Activa , Biopsia , Encéfalo/patología , Cryptococcus neoformans/genética , Femenino , Fluconazol/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Humanos , Masculino , Cumplimiento de la Medicación , Meningitis Criptocócica/tratamiento farmacológico , Recurrencia , Resultado del TratamientoAsunto(s)
Síndrome de Inmunodeficiencia Adquirida/patología , Leucoencefalopatía Multifocal Progresiva/patología , Mioclonía/patología , Síndrome de Inmunodeficiencia Adquirida/complicaciones , Humanos , Virus JC/aislamiento & purificación , Leucoencefalopatía Multifocal Progresiva/complicaciones , Masculino , Persona de Mediana Edad , Mioclonía/complicacionesRESUMEN
BACKGROUND: NKX2-1 encodes a transcription factor with large impact on the development of brain, lung and thyroid. Germline mutations of NKX2-1 can lead to dysfunction and malformations of these organs. Starting from the largest coherent collection of patients with a suspected phenotype to date, we systematically evaluated frequency, quality and spectrum of phenotypic consequences of NKX2-1 mutations. METHODS: After identifying mutations by Sanger sequencing and array CGH, we comprehensively reanalysed the phenotype of affected patients and their relatives. We employed electrophoretic mobility shift assay (EMSA) to detect alterations of NKX2-1 DNA binding. Gene expression was monitored by means of in situ hybridisation and compared with the expression level of MBIP, a candidate gene presumably involved in the disorders and closely located in close genomic proximity to NKX2-1. RESULTS: Within 101 index patients, we detected 17 point mutations and 10 deletions. Neurological symptoms were the most consistent finding (100%), followed by lung affection (78%) and thyroidal dysfunction (75%). Novel symptoms associated with NKX2-1 mutations comprise abnormal height, bouts of fever and cardiac septum defects. In contrast to previous reports, our data suggest that missense mutations in the homeodomain of NKX2-1 not necessarily modify its DNA binding capacity and that this specific type of mutations may be associated with mild pulmonary phenotypes such as asthma. Two deletions did not include NKX2-1, but MBIP, whose expression spatially and temporarily coincides with NKX2-1 in early murine development. CONCLUSIONS: The high incidence of NKX2-1 mutations strongly recommends the routine screen for mutations in patients with corresponding symptoms. However, this analysis should not be confined to the exonic sequence alone, but should take advantage of affordable NGS technology to expand the target to adjacent regulatory sequences and the NKX2-1 interactome in order to maximise the yield of this diagnostic effort.
Asunto(s)
Enfermedades Genéticas Congénitas , Proteínas Nucleares/genética , Factores de Transcripción/genética , Adolescente , Niño , Preescolar , Hibridación Genómica Comparativa , Variaciones en el Número de Copia de ADN/genética , Ensayo de Cambio de Movilidad Electroforética , Femenino , Eliminación de Gen , Enfermedades Genéticas Congénitas/genética , Enfermedades Genéticas Congénitas/fisiopatología , Humanos , Lactante , Recién Nacido , Masculino , Fenotipo , Mutación Puntual/genética , Factor Nuclear Tiroideo 1RESUMEN
We report a case of cryptococcal immune reconstitution inflammatory syndrome affecting the lungs, and 10 months later the cervical lymph nodes, in the absence of cryptococcal meningitis, in advanced HIV infection. Our report demonstrates the organ-specificity of the timing of the inflammatory response and illustrates the organ-specific interplay of immunity and infection in cryptococcal disease.