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1.
BMC Geriatr ; 23(1): 309, 2023 05 18.
Artículo en Inglés | MEDLINE | ID: mdl-37198554

RESUMEN

BACKGROUND: As unplanned Emergency Department (ED) return visits (URVs) are associated with adverse health outcomes in older adults, many EDs have initiated post-discharge interventions to reduce URVs. Unfortunately, most interventions fail to reduce URVs, including telephone follow-up after ED discharge, investigated in a recent trial. To understand why these interventions were not effective, we analyzed patient and ED visit characteristics and reasons for URVs within 30 days for patients aged ≥ 70 years. METHODS: Data was used from a randomized controlled trial, investigating whether telephone follow-up after ED discharge reduced URVs compared to a satisfaction survey call. Only observational data from control group patients were used. Patient and index ED visit characteristics were compared between patients with and without URVs. Two independent researchers determined the reasons for URVs and categorized them into: patient-related, illness-related, new complaints and other reasons. Associations were examined between the number of URVs per patient and the categories of reasons for URVs. RESULTS: Of the 1659 patients, 222 (13.4%) had at least one URV within 30 days. Male sex, ED visit in the 30 days before the index ED visit, triage category "urgent", longer length of ED stay, urinary tract problems, and dyspnea were associated with URVs. Of the 222 patients with an URV, 31 (14%) returned for patient-related reasons, 95 (43%) for illness-related reasons, 76 (34%) for a new complaint and 20 (9%) for other reasons. URVs of patients who returned ≥ 3 times were mostly illness-related (72%). CONCLUSION: As the majority of patients had an URV for illness-related reasons or new complaints, these data fuel the discussion as to whether URVs can or should be prevented. TRIAL REGISTRATION: For this cohort study, we used data from a randomized controlled trial (RCT). This trial was pre-registered in the Netherlands Trial Register with number NTR6815 on the 7th of November 2017.


Asunto(s)
Servicio de Urgencia en Hospital , Readmisión del Paciente , Masculino , Humanos , Anciano , Estudios de Cohortes , Alta del Paciente , Triaje
2.
Ned Tijdschr Tandheelkd ; 130(6): 287-294, 2023 Jun.
Artículo en Holandés | MEDLINE | ID: mdl-37279497

RESUMEN

For this exploratory study, ALS patients and their partners/caregivers were interviewed to find out what problems they encounter when performing oral care. In addition, the tooth brushing procedure was recorded on video. Most mentioned by the six patients was that the performance of oral care is hampered by the loss of motor skills and by the gag reflex. They also mentioned various adjustments that would ease dental visits. Three of the four partners indicated that an instructional video would have additional value, and two partners said they sometimes felt insecure whether they were performing oral care properly. The five videos showed that there are major differences regarding tooth brushing duration, which surfaces are being brushed, and the brushing technique. This study shows that there are several ways in which oral care is performed in ALS patients. Furthermore, not all caregivers are aware of how oral care should be performed.


Asunto(s)
Esclerosis Amiotrófica Lateral , Humanos , Cepillado Dental , Emociones , Atragantamiento
3.
Pituitary ; 24(6): 970-977, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34518998

RESUMEN

PURPOSE: We present an up-to-date review of all published cases of sellar melanocytoma, a benign melanocytic neoplasm arising from melanocytes present in the leptomeninges surrounding the pituitary. METHODS: Both the Medline and Embase databases were searched for case reports or case series of patients with a sellar mass consisting of melanocytes. RESULTS: All 14 identified patients developed symptoms due to compression of the surrounding structures. Symptoms included pituitary dysfunction and visual impairment. All patients received a transsphenoidal resection as first-line treatment. The diagnosis is made on pathological examination but deciding whether a sellar melanocytic tumor is best classified as a melanocytoma or a melanoma is not straightforward. DISCUSSION: Genetic analyses can help differentiate between central nervous system origin and metastasis of a cutaneous melanoma with the presence of a GNAQ and GNA11 mutations or a BRAF mutation, respectively. First choice treatment is complete resection, and in case of incomplete resection or recurrence additional radiotherapy is advised.


Asunto(s)
Melanoma , Neoplasias Cutáneas , Humanos , Melanocitos , Mutación , Hipófisis
4.
Emerg Radiol ; 28(1): 23-29, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32577933

RESUMEN

PURPOSE: Emergency departments (EDs) worldwide face crowding, which negatively affects patient care. Diagnostic imaging plays a major role in management of ED patients and contributes to patients' length of stay at the ED. In this study, the impact of Lean-driven interventions on the imaging process at the ED was assessed. METHODS: During a 6-month multimodal intervention period, Lean-driven interventions and a dedicated radiologist present at the ED were implemented during peak hours (12 a.m.-8 p.m.). Data concerning patient population, radiology department turnaround time (RDTT), radiology report time (RRT), and examination time (ET) for ED patients were compared with a control period of 6 months 1 year earlier. RESULTS: RDTT, RRT, and ET were significantly shorter in the intervention period compared with those in the control period. Median RDTT was respectively 36 min (interquartile range (IQR) 24-56) and 70 min (IQR 39-127), RRT 11 min (IQR 6-21) and 37 min (IQR 15-88), and ET 22 min (IQR 14-35) and 23 min (14-38). CONCLUSION: Lean-driven interventions on the imaging process at the ED significantly reduced RDTT, RRT, and ET.


Asunto(s)
Aglomeración , Servicio de Urgencia en Hospital/organización & administración , Radiólogos/estadística & datos numéricos , Tomografía Computarizada por Rayos X , Gestión de la Calidad Total , Adulto , Anciano , Femenino , Humanos , Tiempo de Internación/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Tiempo
5.
J Emerg Med ; 59(2): 320-328, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32546441

RESUMEN

BACKGROUND: Emergency department (ED) recidivism and the use of amphetamine and associated derivatives such as methamphetamine and MDMA (MAE), are intersecting public health concerns. OBJECTIVE: This study aims to determine the frequency of ED recidivism of patients who use MAE and associated factors. METHODS: The study was a retrospective 6-year electronic medical record review of patients with MAE-positive toxicology screens and single and multiple ED visits in the span of 12 months. RESULTS: There were 7844 ED visits by 5568 MAE-positive patients. Average age was 42 ± 13 years. The majority were male (65%), white (46%), tobacco smokers (55%), and in the psychiatric discharge diagnostic-related group (41%), followed by blunt trauma (20%). Admission rate was 35%, with another 17% transferred to inpatient psychiatric treatment facilities. Occasional (2-5 visits/year), heavy (6-11 visits/year), and super users (≥12 visits/year) altogether accounted for 20% of patients and 43% of visits. Heavy and super users combined represented 2% of patients and 10% of visits, with significant differences for race/ethnicity, health insurance, tobacco smoking, and psychiatric/cardiovascular/trauma discharge diagnostic-related groups. Heavy and super users were less likely to be admitted and more likely to be discharged to an inpatient psychiatric treatment facility. Regression analysis revealed racial/ethnic differences, female gender, and tobacco smoking to be associated with super and heavy use. Heavy users were more likely to have cardiovascular-related discharge diagnoses. CONCLUSIONS: The prevalence of ED recidivism in patients who use MAE is similar to published ranges for general ED users. Significant differences in demographics, discharge diagnoses, insurance, smoking, and disposition exist between nonfrequent and frequent ED users.


Asunto(s)
Metanfetamina , N-Metil-3,4-metilenodioxianfetamina , Reincidencia , Adulto , Anfetamina , Servicio de Urgencia en Hospital , Femenino , Humanos , Masculino , Metanfetamina/efectos adversos , Persona de Mediana Edad , Estudios Retrospectivos
6.
Emerg Med J ; 37(4): 206-211, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31932395

RESUMEN

BACKGROUND: Routine screening programmes for hazardous alcohol use in the ED miss large numbers of patients. We investigated whether patient-related or staff-related factors cause screening failures and whether unscreened patients are at increased risk of hazardous alcohol use. METHODS: This is a secondary analysis of a prospective study. From November 2012 to November 2013, all adult patients visiting a Dutch inner city ED were screened for hazardous alcohol consumption using the Alcohol Use Disorders Identification Test-Consumption. Reasons for failure of screening were categorised as: (A) patient is unable to cooperate (due to illness or pain, decreased consciousness or incomprehension due to intoxication, psychiatric, cognitive or neurological disorder or language barrier), (B) healthcare professional forgot to ask, (C) patient refuses cooperation and (D) screening was recently performed (<6 months ago). Presence of risk factors for hazardous alcohol use was compared between screened and unscreened patients. RESULTS: Of the 28 019 ED patients, 18 310 (65%) were screened and 9709 (35%) were not. In 7150 patients staff forgot to screen, whereas 2559 patients were not screened due to patient factors (2340 being unable and 219 unwilling). Patients with any of these risk factors were less likely to be screened: male sex, alcohol-related visit, any intoxication, head injury, any kind of wound and major trauma. In multivariate analysis, all these risk factors were independently associated with not being screened. Patients with at least one risk factor for hazardous alcohol use were less likely to be screened. Highest prevalence of risk factors was found in patients unable or unwilling to cooperate. CONCLUSION: Patients who do not undergo routine screening for alcohol use at triage in the ED have an increased risk for hazardous alcohol use. These data highlight the importance of screening patients, especially those initially unwilling or unable to cooperate, at a later stage.


Asunto(s)
Alcoholismo/diagnóstico , Tamizaje Masivo/métodos , Asunción de Riesgos , Adulto , Alcoholismo/epidemiología , Alcoholismo/psicología , Servicio de Urgencia en Hospital/organización & administración , Servicio de Urgencia en Hospital/estadística & datos numéricos , Femenino , Humanos , Masculino , Tamizaje Masivo/estadística & datos numéricos , Persona de Mediana Edad , Países Bajos , Prevalencia , Estudios Prospectivos , Factores de Riesgo , Estadísticas no Paramétricas
7.
Pneumologie ; 74(8): 515-544, 2020 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-32823360

RESUMEN

The present guideline aims to improve the evidence-based management of children and adolescents with pediatric community-acquired pneumonia (pCAP). Despite a prevalence of approx. 300 cases per 100 000 children per year in Central Europe, mortality is very low. Prevention includes infection control measures and comprehensive immunization. The diagnosis can and should be established clinically by history, physical examination and pulse oximetry, with fever and tachypnea as cardinal features. Additional signs or symptoms such as severely compromised general condition, poor feeding, dehydration, altered consciousness or seizures discriminate subjects with severe pCAP from those with non-severe pCAP. Within an age-dependent spectrum of infectious agents, bacterial etiology cannot be reliably differentiated from viral or mixed infections by currently available biomarkers. Most children and adolescents with non-severe pCAP and oxygen saturation > 92 % can be managed as outpatients without laboratory/microbiology workup or imaging. Anti-infective agents are not generally indicated and can be safely withheld especially in children of young age, with wheeze or other indices suggesting a viral origin. For calculated antibiotic therapy, aminopenicillins are the preferred drug class with comparable efficacy of oral (amoxicillin) and intravenous administration (ampicillin). Follow-up evaluation after 48 - 72 hours is mandatory for the assessment of clinical course, treatment success and potential complications such as parapneumonic pleural effusion or empyema, which may necessitate alternative or add-on therapy.


Asunto(s)
Antibacterianos/uso terapéutico , Infecciones Comunitarias Adquiridas/tratamiento farmacológico , Neumonía/tratamiento farmacológico , Guías de Práctica Clínica como Asunto , Neumología/normas , Adolescente , Antibacterianos/administración & dosificación , Niño , Infecciones Comunitarias Adquiridas/diagnóstico , Infecciones Comunitarias Adquiridas/virología , Europa (Continente) , Alemania , Humanos , Lactante , Neumonía/diagnóstico , Neumonía/virología , Sociedades Médicas
8.
Phys Rev Lett ; 123(20): 207201, 2019 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-31809079

RESUMEN

The magnitude of the orbital magnetic moment and its role as a trigger of the Verwey transition in the prototypical Mott insulator, magnetite, remain contentious. Using 1s2p resonant inelastic x-ray scattering angle distribution (RIXS-AD), we prove the existence of noncollinear orbital magnetic ordering and infer the presence of dynamical distortion creating a polaronic precursor for the metal to insulator transition. These conclusions are based on a subtle angular shift of the RIXS-AD spectral intensity as a function of the magnetic field orientation. Theoretical simulations show that these results are only consistent with noncollinear magnetic orbital ordering. To further support these claims we perform Fe K-edge x-ray magnetic circular dichroism in order to quantify the Fe average orbital magnetic moment.

9.
Br J Dermatol ; 181(1): 65-79, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-30585305

RESUMEN

BACKGROUND: Rosacea is a common chronic facial dermatosis. Classification of rosacea has evolved from subtyping to phenotyping. OBJECTIVES: To update our systematic review on interventions for rosacea. METHODS: We searched CENTRAL, MEDLINE, Embase, LILACS, Science Citation Index and ongoing trials registers (March 2018) for randomized controlled trials. Study selection, data extraction, risk-of-bias assessment and analyses were carried out independently by two authors. Grading of Recommendations, Assessment, Development and Evaluations (GRADE) was used to assess certainty of evidence. RESULTS: We included 152 studies (46 were new), comprising 20 944 participants. Topical interventions included brimonidine, oxymetazoline, metronidazole, azelaic acid, ivermectin and other topical treatments. Systemic interventions included oral antibiotics, combinations with topical treatments or other systemic treatments. Several studies evaluated laser or light-based treatment. We present the most current evidence for rosacea management based on a phenotype-led approach. CONCLUSIONS: For reducing temporarily persistent erythema there was high-certainty evidence for topical brimonidine and moderate certainty for topical oxymetazoline; for erythema and mainly telangiectasia there was low-to-moderate-certainty evidence for laser and intense pulsed light therapy. For reducing papules/pustules there was high-certainty evidence for topical azelaic acid and topical ivermectin; moderate-to-high-certainty evidence for doxycycline 40 mg modified release (MR) and isotretinoin; and moderate-certainty evidence for topical metronidazole, and topical minocycline and oral minocycline being equally effective as doxycycline 40 mg MR. There was low-certainty evidence for tetracycline and low-dose minocycline. For ocular rosacea, there was moderate-certainty evidence that oral omega-3 fatty acids were effective and low-certainty evidence for ciclosporin ophthalmic emulsion and doxycycline.


Asunto(s)
Dermatología/métodos , Medicina Basada en la Evidencia/métodos , Dermatosis Facial/terapia , Rosácea/terapia , Administración Cutánea , Administración Oral , Antibacterianos/administración & dosificación , Tartrato de Brimonidina/administración & dosificación , Terapia Combinada/métodos , Fármacos Dermatológicos/administración & dosificación , Quimioterapia Combinada/métodos , Dermatosis Facial/clasificación , Dermatosis Facial/diagnóstico , Humanos , Tratamiento de Luz Pulsada Intensa/métodos , Terapia por Luz de Baja Intensidad/métodos , Oximetazolina/administración & dosificación , Ensayos Clínicos Controlados Aleatorios como Asunto , Rosácea/clasificación , Rosácea/diagnóstico , Índice de Severidad de la Enfermedad , Resultado del Tratamiento
10.
Br J Dermatol ; 179(6): 1315-1321, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-29923188

RESUMEN

BACKGROUND: Vulvar Paget disease (VPD) is extremely rare and thought to be associated with other malignancies. OBJECTIVES: To evaluate the risk of developing breast, intestinal and urological malignancies in patients with VPD compared with the general population, and in particular to focus on the risk of malignancy in patients with cutaneous noninvasive VPD. METHODS: Data on the oncological history of patients with any type of VPD between 2000 and 2015 were obtained from PALGA, a nationwide archive containing all pathology reports in the Netherlands. Follow-up data and a control group from the general population were obtained from the Netherlands Cancer Registry. After correction for age and calendar year at time of diagnosis, standardized incidence ratios (SIRs) for the first 3 years after VPD diagnosis were estimated with 95% confidence intervals (CIs). RESULTS: We identified 199 patients with a first diagnosis of VPD [164 noninvasive, 35 (micro)invasive] between 2000 and 2015. The SIR of developing an associated malignancy in the first 3 years after diagnosis was 4·67 (95% CI 2·66-7·64). This was due mainly to the high incidence of intestinal malignancies among patients with secondary VPD. Subgroup analysis for cutaneous noninvasive VPD did not reveal a significantly increased risk for associated malignancies: SIR 2·08 (95% CI 0·76-4·62). CONCLUSIONS: Of our patients with VPD, 76·9% were diagnosed with cutaneous noninvasive VPD, and this group has no increased risk for developing malignancies of the breast, intestine or urological tract. Our study suggests that routine screening for these malignancies in patients diagnosed with cutaneous noninvasive VPD may not be necessary.


Asunto(s)
Detección Precoz del Cáncer/estadística & datos numéricos , Tamizaje Masivo/estadística & datos numéricos , Enfermedad de Paget Extramamaria/complicaciones , Neoplasias Cutáneas/complicaciones , Neoplasias de la Vulva/complicaciones , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/etiología , Estudios de Casos y Controles , Dermatología/estadística & datos numéricos , Detección Precoz del Cáncer/normas , Femenino , Humanos , Incidencia , Neoplasias Intestinales/diagnóstico , Neoplasias Intestinales/epidemiología , Neoplasias Intestinales/etiología , Tamizaje Masivo/normas , Persona de Mediana Edad , Países Bajos/epidemiología , Guías de Práctica Clínica como Asunto , Medición de Riesgo , Neoplasias Urológicas/diagnóstico , Neoplasias Urológicas/epidemiología , Neoplasias Urológicas/etiología
11.
Neth Heart J ; 26(7-8): 393-400, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29931649

RESUMEN

OBJECTIVE: To investigate 1­year outcomes with routine prasugrel treatment after acute coronary syndrome (ACS) in a large-scale registry. METHODS: The Rijnmond Collective Cardiology Research registry is a prospective, observational study that enrolled 4,258 consecutive ACS patients treated with percutaneous coronary intervention (PCI) with 1­year follow-up. Patients received prasugrel as first-choice antiplatelet agent, except for increased bleeding risk patients in which clopidogrel was recommended. Events were validated by an independent clinical endpoint committee. RESULTS: A total number of 2,677 patients received prasugrel at discharge after the index event. Eighty-one percent of the target population was on prasugrel treatment at hospital discharge. At 1 year, the primary endpoint, a composite of all-cause mortality and myocardial infarction, occurred in 2.4% of patients receiving prasugrel. All-cause mortality occurred in 1.0%, myocardial infarction in 1.5%, target-vessel revascularisation in 3.1%, stent thrombosis in 0.6%, and stroke in 0.5% of the patients treated with prasugrel. Thrombolysis in Myocardial Infarction defined major bleeding episodes not related to coronary artery bypass grafting were observed in 1.4% of patients receiving prasugrel. CONCLUSIONS: In routine practice, a tailored approach of prasugrel prescription in ACS patients undergoing PCI, resulted in low ischaemic and low bleeding rates up to 1 year post PCI.

12.
Br J Dermatol ; 176(6): 1465-1474, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27797396

RESUMEN

BACKGROUND: There is a lack of evidence for minocycline in the treatment of rosacea. OBJECTIVES: To compare the efficacy and safety of doxycycline 40 mg vs. minocycline 100 mg in papulopustular rosacea. METHODS: In this randomized, single-centre, 1 : 1 allocation, assessor-blinded, noninferiority trial, patients with mild-to-severe papulopustular rosacea were randomly allocated to either oral doxycycline 40 mg or minocycline 100 mg for a 16-week period with 12 weeks of follow-up. Our primary outcomes were the change in lesion count and change in patient's health-related quality of life (using RosaQoL). Intention-to-treat and per protocol analyses were performed. RESULTS: Of the 80 patients randomized (40 minocycline, 40 doxycycline), 71 were treated for 16 weeks. Sixty-eight patients completed the study. At week 16, the median change in lesion count was comparable in both groups: doxycycline vs. minocycline, respectively 13 vs. 14 fewer lesions. The RosaQoL scores were decreased for both doxycycline and minocycline, respectively by 0·62 and 0·86. Secondary outcomes were comparable except for Investigator's Global Assessment success, which was seen significantly more often in the minocycline group than in the doxycycline group (60% vs. 18%, P < 0·001). At week 28, outcomes were comparable, except for RosaQoL scores and PaGA, which were significantly different in favour of minocycline (P = 0·005 and P = 0·043, respectively), and fewer relapses were recorded in the minocycline group than in the doxycycline group (7% and 48%, respectively; P < 0·001). No serious adverse reactions were reported. CONCLUSIONS: Minocycline 100 mg is noninferior to doxycycline 40 mg in efficacy over a 16- week treatment period. At follow-up, RosaQoL and PaGA were statistically significantly more improved in the minocycline group than in the doxycycline group, and minocycline 100 mg gives longer remission. In this study there was no significant difference in safety between these treatments; however, based on previous literature minocycline has a lower risk-to-benefit ratio than doxycycline. Minocycline 100 mg may be a good alternative treatment for those patients who, for any reason, are unable or unwilling to take doxycycline 40 mg.


Asunto(s)
Antibacterianos/administración & dosificación , Fármacos Dermatológicos/administración & dosificación , Doxiciclina/administración & dosificación , Dermatosis Facial/tratamiento farmacológico , Minociclina/administración & dosificación , Rosácea/tratamiento farmacológico , Administración Oral , Antibacterianos/efectos adversos , Fármacos Dermatológicos/efectos adversos , Doxiciclina/efectos adversos , Esquema de Medicación , Femenino , Humanos , Masculino , Minociclina/efectos adversos , Calidad de Vida , Recurrencia , Método Simple Ciego , Resultado del Tratamiento
13.
Eur J Clin Microbiol Infect Dis ; 36(9): 1643-1649, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28401320

RESUMEN

Streptococcus pyogenes (GAS) is one of the major human pathogenic bacteria that cause a wide range of diseases. Currently, increased incidence of streptococcal invasive infections is observed worldwide. In this study, we focused on the prevalence of genes encoding superantigens and type M proteins in the population of GAS strains from invasive versus non-invasive infections. We tested 253 GAS strains: 48 strains from patients with invasive infections (18 from wound/deep skin localization, 30 from women in labour) and 205 strains from non-invasive forms (147 from common infections of the upper respiratory, 49 from the vagina of females with genital tract infections and 9 from non-invasive wound and superficial skin infections). Significant differences were found in the occurrence of genes: speG, speI, speJ and smeZ, which were more common in GAS isolated from invasive than from non-invasive strains; speJ and smeZ occurred more frequently in strains from invasive perinatal infections versus strains from women without symptoms of invasive infection; speH and speI in strains from invasive skin/wound infection versus strains isolated from non-invasive wound and superficial skin infections. Emm types 1 and 12 predominated in the group of strains isolated from superficial infections and type 28 in those from puerperal fever. Occurrence of genes encoding virulence factors is common in genomic DNA of most of S. pyogenes, regardless whether these streptococcal infections are invasive or non-invasive. On the other hand, it appears that strains with speG, speI, speJ and smeZ genes may have a particular potential for virulence.


Asunto(s)
Infecciones Estreptocócicas/epidemiología , Infecciones Estreptocócicas/microbiología , Streptococcus pyogenes/genética , Streptococcus pyogenes/patogenicidad , Factores de Virulencia/genética , Antígenos Bacterianos/genética , Proteínas de la Membrana Bacteriana Externa/genética , Proteínas Portadoras/genética , Femenino , Genotipo , Historia del Siglo XXI , Humanos , Masculino , Serogrupo , Infecciones Estreptocócicas/diagnóstico , Infecciones Estreptocócicas/historia , Streptococcus pyogenes/clasificación , Virulencia/genética
14.
Orthod Craniofac Res ; 20(2): 65-70, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28207178

RESUMEN

OBJECTIVE: In children with Down syndrome, the timing of dental eruption is important for orthodontics treatment planning. Aim of this study was to determine whether tooth eruption and development of the dentition in children with Down syndrome are impaired. MATERIAL AND METHODS: Dental development was scored on orthopantomograms (OPTs) of 95 children with Down syndrome. The dental age was determined at the left mandibular side according to the Demirjian method and by converting the assigned scores to the dental maturity score. Dental development scores of control children and DS children were compared with a mixed model linear regression analysis. RESULTS: The model showed statistically significant changes relating to increasing age (P<0.001) and gender (P<0.05). In this comparison, the total DS group (with and without hypodontia) was not statistically significantly different from the control group. There was also no significant difference between the total sample of DS children and the control group after using the Nyström imputation (with and without hypodontia). CONCLUSION: The findings showed that dental development in DS children is similar to the development of control children and that a relationship exists between hypodontia and dental development. The clinically observed late eruption is probably not due to late dental development but due to the other processes that take place during eruption, such as the possible impaired processes at the apical side and the occlusal side of an erupting element.


Asunto(s)
Anodoncia/fisiopatología , Síndrome de Down/fisiopatología , Odontogénesis/fisiología , Adolescente , Determinación de la Edad por los Dientes , Factores de Edad , Niño , Preescolar , Femenino , Humanos , Masculino , Países Bajos , Radiografía Panorámica , Factores Sexuales
15.
Soft Matter ; 12(31): 6610-20, 2016 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-27439990

RESUMEN

We report the formation of alternating strings and clusters in a binary suspension of repulsive charged colloids with double layers larger than the particle size. Within a binary cell model we include many-body and charge-regulation effects under the assumption of a constant surface potential, and consider their repercussions on the two-particle interaction potential. We find that the formation of induced dipoles close to a charge-reversed state may explain the formation of these structures. Finally, we will touch upon the formation of dumbbells and small clusters in a one-component system, where the effective electrostatic interaction is always repulsive.

16.
Eur J Clin Microbiol Infect Dis ; 35(5): 747-54, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26873375

RESUMEN

Invasive group A streptococcal (GAS) infections constitute an important epidemiological problem. Many cases occur in women during the postnatal period. The objective of this study was to evaluate the presence of the genes responsible for production of iron-chelating protein (perR) and superantigens (speA, speB, speC, speF, speG, speH, speI, speJ, speK, speL, speM, smeZ, and ssa) in S. pyogenes strains isolated from invasive infections in women after delivery. Furthermore, this study sought to verify whether S. pyogenes strains show special phenotypic and genotypic (sla, spy1325) characteristics that may play a decisive role in adherence to the genital tract epithelium. Moreover, the emm-types and antibiotic susceptibility were determined. We tested 30 invasive S. pyogenes strains isolated from postpartum invasive infection and 37 GAS control strains isolated from the genital tracts of asymptomatic multiparous women. The majority of the tested strains were shown to express two types of emm genes (1 and 28), though emm -12, -28, -75 and -89 were uniquely expressed in the group of strains isolated from invasive infections. A significantly higher prevalence of perR in the strains from puerperal fever was shown. Significant differences were also found between the two groups with respect to the incidence of the genes related to adherence; GAS strains originating from women with sepsis/puerperal fever showed presence of these genes less frequently than those of the control group. Although differences in frequencies of the gene coding for various superantigens were noted between the compared groups of GAS strains, they were not significant.


Asunto(s)
Complicaciones Infecciosas del Embarazo/microbiología , Infecciones Estreptocócicas/microbiología , Streptococcus pyogenes/patogenicidad , Adhesión Bacteriana/genética , Farmacorresistencia Bacteriana , Femenino , Genes Bacterianos , Genotipo , Humanos , Pruebas de Sensibilidad Microbiana , Embarazo , Serogrupo , Streptococcus pyogenes/clasificación , Streptococcus pyogenes/efectos de los fármacos , Streptococcus pyogenes/genética , Factores de Virulencia/genética
17.
Epidemiol Infect ; 144(7): 1563-73, 2016 05.
Artículo en Inglés | MEDLINE | ID: mdl-26548594

RESUMEN

After the introduction of conjugate vaccines, a strong rearrangement of pneumococcal serotypes was observed globally. Probably most concerning was the emergence of serotype 19A, which has not only high invasive disease potential, but also high antibiotic resistance. In the current study we focused on the increased prevalence of serotype 19A after the PCV vaccination rate became widely used in Hungary. A total of 2262 children aged 3-6 years were screened for pneumococcus carriage using nasal swabs. Children were divided into two groups according to the vaccination rates, low level (group 1) vs. high level (group 2). While the carriage rate did not change over time (average 32·9%), the serotype distribution differed greatly in the two groups. The prevalence of serotype 19A increased >eightfold. Almost all 19A isolates had high-level macrolide resistance and elevated penicillin minimum inhibitory concentrations. Genotyping methods revealed that these new 19A isolates are different from the previously frequent Hungary19A-6 PMEN clone. Both the carriage rate and the overall penicillin and macrolide resistance remained stable over time, but while several serotypes were represented in group 1, serotype 19A alone was clearly dominant in group 2.


Asunto(s)
Vacuna Neumocócica Conjugada Heptavalente/administración & dosificación , Infecciones Neumocócicas/epidemiología , Infecciones Neumocócicas/prevención & control , Streptococcus pneumoniae/inmunología , Portador Sano/epidemiología , Portador Sano/microbiología , Portador Sano/prevención & control , Niño , Preescolar , Femenino , Humanos , Hungría/epidemiología , Masculino , Infecciones Neumocócicas/microbiología , Serogrupo , Streptococcus pneumoniae/clasificación , Streptococcus pneumoniae/genética , Vacunas Conjugadas/administración & dosificación
19.
Eur J Clin Microbiol Infect Dis ; 34(4): 779-87, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25475124

RESUMEN

The objectives of this study were to assess the current incidence of invasive pneumococcal disease (IPD) in Poland (2011-2013), where mass vaccination has not been implemented, and to characterize the Streptococcus pneumoniae isolates responsible for invasive infections by determining their serotype distribution and antimicrobial resistance patterns. For all isolates identification, serotyping and antimicrobial minimal inhibitory concentrations determination were performed based on routine techniques. The highest incidence rates were observed among adults older than 85 years old (4.62/100,000) and children under 1 year of age (4.28/100,000). The general case fatality ratio (CFR) was 25.4%, with the highest CFR in the age group ≥85 years old (59.7%). The most common serotypes were 3, 14, 19A, 4, 9V, 19F, 1, and 23 F (61.3% of all isolates). The 10- and 13-valent pneumococcal conjugated vaccines (PCV) covered 46.0 and 71.8% of all IPD cases, 61.4 and 79.5% of cases in children under two years, and 60.4 and 78.6% of cases involving children under five years of age, respectively. The PCV13 and 23-valent polysaccharide vaccine covered 68.7 and 86.0% of cases in adults >65 years old, respectively. Decreased susceptibility was noted for penicillin (24.8%), cefotaxime (10.0%), meropenem (5.0%), rifampicin (0.8%), chloramphenicol (4.3%), erythromycin (29.7%) and clindamycin (25.6%). Multi-drug resistance characterized 21.6% of the pneumococci tested. Despite deficiencies in the Polish surveillance system and strong underestimation of IPD cases, results of the study showed good theoretical coverage of PCV, which should encourage inclusion of anti-pneumococcal conjugate vaccine into the national immunization program.


Asunto(s)
Infecciones Neumocócicas/epidemiología , Streptococcus pneumoniae/clasificación , Streptococcus pneumoniae/aislamiento & purificación , Adolescente , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Antibacterianos/farmacología , Niño , Preescolar , Femenino , Humanos , Incidencia , Lactante , Recién Nacido , Masculino , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Mortalidad , Polonia/epidemiología , Serogrupo , Serotipificación , Streptococcus pneumoniae/efectos de los fármacos , Adulto Joven
20.
Euro Surveill ; 20(10): 21057, 2015 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-25788255

RESUMEN

We assessed the impact of 10-valent and 13-valent pneumococcal vaccines (PCV10 and PCV13), which were introduced in Germany in 2009, on the incidence of meningitis and non-meningitis invasive pneumococcal disease (IPD) in children aged under 16 years in a population previously vaccinated with a seven-valent vaccine (PCV7). Surveillance of IPD (isolation of Streptococcus pneumonia from a normally sterile body site) is based on data from two independent reporting sources: hospitals and laboratories. IPD incidence was estimated by capture-recapture analysis. Incidence rate ratios (IRRs) were calculated for 2009 and 2012, thus comparing pre- and post-PCV10 and PCV13 data. IPD incidence caused by serotypes included in PCV13 decreased in all age and diagnosis groups. A rise in non-vaccine serotype incidence was seen only in children aged under two years. The overall impact varied by age group and infection site: for meningitis IPD in children aged under 2, 2-4 and 5-15 years, incidence changed by 3% (95% CI: -31 to 52), -60% (95% CI: -81 to -17) and -9% (95% CI: -46 to 53), respectively. A more pronounced incidence reduction was observed for non-meningitis IPD: -30% (95% CI: -46 to -7), -39% (95% CI: -54 to -20) and -83% (95% CI: -89 to -73) in children aged under 2, 2-4 and 5-15 years, respectively. A higher tropism of the additional serotypes for non-meningitis IPD may be a potential explanation. The heterogeneous findings emphasise the need for rigorous surveillance


Asunto(s)
Meningitis Neumocócica/epidemiología , Meningitis Neumocócica/prevención & control , Infecciones Neumocócicas/epidemiología , Infecciones Neumocócicas/prevención & control , Vacunas Neumococicas/inmunología , Adolescente , Niño , Preescolar , Femenino , Alemania/epidemiología , Humanos , Incidencia , Lactante , Recién Nacido , Masculino , Vacunas Neumococicas/administración & dosificación , Vigilancia de la Población , Resultado del Tratamiento , Vacunación/estadística & datos numéricos , Vacunas Conjugadas/administración & dosificación
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